99results about How to "With water absorption" patented technology

The invention discloses a ceramic material with sound-absorbing and plant-cultivating functions and a preparation method thereof. The ceramic material is characterized in that the apparent porosity is 47-93%, the pore size distribution is 5-830 microns, the water absorption is 43-305%, the volume weight is 0.39-1.27g / cm<3>, the compression strength is 1.8-15.9MPa, the degree of fire resistance is above 1000 DEG C and the average sound-absorbing coefficient is 0.31-0.92. The ceramic material provided by the invention is simple in structure and convenient in construction, has the characteristics of water absorption and moisture preservation, and can be directly applied to the plant cultivation, noise reduction and heat insulation at the places, such as, roof, wall, balcony, two sides of road, and the like, under the condition of arranging no protecting layer, dewatering layer, water-filtering layer, water-reserving layer, cultivation medium, and the like. The ceramic material is particularly suitable for the growth of plant roots.

The invention relates to a cold resistant packing agent, wherein it comprises 5-50% cold resistant nutrient, 10-70% macromolecule water absorber, 0.1-10% disinfector, 0.1-10% antiseptic, 0.01-2% growth adjuster, 0.02-2% cold resistant nutrient, and 0.2-20% oxygen releaser. And the cold resistant sprayer comprises 30-80% cold resistant nutrient, 4-40% cold resistant liquid, 0.02-2. 0% surface activator, 0.001-1. 0% plant growth adjuster and left water. The invention can seed at low temperature. And the cold resistant sprayer can improve the cold resistance of plant / .

The invention relates to a manufacturing technique of stereoscopic underglaze multicolor ceramic, which comprises the following steps: carrying out ball milling on a selected ceramic raw material, screening, slurrying, carrying out injection forming on a mold to obtain a required shape, preparing a blank, and carrying out bisque firing to obtain a biscuit; carving out a stereoscopic multilayer plain color picture on the biscuit with a carving tool; dipping a drawing tool into underglaze multicolor pigments, and drawing and decorating on the stereoscopic picture of the biscuit to obtain a colored biscuit; carrying out color depth gradation treatment on the picture of the colored biscuit by using a special brush; and covering a glaze layer on the surface of the colored biscuit subjected to color treatment; and firing the glaze-covered colored biscuit in a kiln again to obtain the finished product. The technique adopts the two modes of biscuit carving and mold carving. The ceramic article prepared by the technique has the advantages of strong stereoscopic effect, abundant colors, high color layering effect and glossy and bright glaze.

The invention discloses water-retention slow-releasing carbon-based compound fertilizer and belongs to fertilizer used in agriculture and forestry production. The carbon-based compound fertilizer is prepared from the ingredients of nitrogenous fertilizer serving as the major ingredient, phosphatic fertilizer, potash fertilizer and trace elements in the fertilizer and filling powdered carbon. The preparing method comprises the following steps of: mixing the ingredients uniformly to serve as powder material or pelletizing the powder material of the mixed powder and bagging for supplying the market. According to the invention, agriculture and forestry plant waste and the like are carbonized for preparing carbon powder, so that the utilization of waste materials can be achieved, the income of farmers can be increased, and the environment can be protected. Most importantly, filler such as mountain flour is replaced by the carbon powder so that the efficacy of the fertilizer can be improved, significant process can be made, and an unexpected effect can be achieved. According to the invention, the basic one-water double-fertilizer requirement in agricultural production can be met. As the carbon powder has strong permeability and a moisture-feed circulative-absorbing water-retention function, oxygen in the fertilizer can be slowly released, the use ratio of the fertilizer is improved, and essential condition for plant growth is met.

The invention discloses a tunnel lining structure filled with ceramic particles and a construction method. The tunnel lining structure comprises a surrounding rock, a preliminary support is anchored to a tunnel rock body of the surrounding rock through anchoring rods, and a waterproof layer is laid on the inner layer of the preliminary support. A ceramic particle filler is laid on the inner layerof the waterproof layer, steel anchoring frames are arranged on the inner side of the ceramic particle filler, and secondary lining pouring is conducted on the inner sides of the steel arching frames.By adopting the technology, the bearing capacity of support materials can be brought into full play, the utilization rate of the steel arching frames is greatly increased, the using quantity of the steel arching frames is decreased, the strength requirement of the steel arching frames is lowered, the ceramic particle filler is utilized to protect the steel arching frames to the utmost extent, deformation of the surrounding rock is effectively controlled, the surrounding rock is protected and reinforced, resources are saved, and the environment-friendly and economic effects are achieved.

The invention discloses high-purity sodium carboxymethyl starch, a preparation method thereof and application thereof. Mainly during basification and etherification of starch in a reaction kettle, the stable reaction temperature, stirring time and stirring speed are strictly kept; and after an organic solvent is added into the starch, a semi-powder semi-grain product is completely stirred and fully dispersed in the organic solvent, and the solvent is removed to form a powder product. The purity of the prepared sodium carboxymethyl starch is as high as 90 to 99 percent, the substitution value is as high as 1.3 to 1.9, and the application fields of dye printing, spinning, food, papermaking, ceramics, petroleum and the like are enlarged.

The invention relates to cell immobilization technology, in particular to a preparation method for immobilized bacteria used in the restoration of polycyclic aromatic hydrocarbons contaminated soil, using 0.25-1.00mm red brick powder, fly ash, vermiculite, peat soil, diatoms Soil or coke powder is used as the carrier material. After sterilization, it is inserted into the bacterial solution, and then multiplied and cultivated to obtain the desired immobilized particles. The immobilized biological product prepared according to the formula of the invention has a good remediation effect on soil polluted by high-molecular-weight polycyclic aromatic hydrocarbons, and is a reliable new environment-friendly biological product.

The invention provides a water storage-type city road isolation belt having ecological purifying function. The water storage-type city road isolation belt comprises a U-shaped water permeable tank, curb bricks, discharge drains, discharge drain cover plates, an ecological purifying case and plants. The U-shaped water permeable tank is arranged below the center ground of the isolation belt, plants are planted in the U-shaped water permeable tank, the curb bricks are arranged at two sides of the upper surface of the U-shaped water permeable tank; the discharge drains are arranged at two sides of the U-shaped water permeable tank; the discharge drain cover plate is arranged at the top of the discharge drain; and ecological purifying case is arranged at one side of the bottom of the discharge drain close to the U-shaped water permeable tank. The apparatus has safety protection function as the common road isolation belts, can effectively degrade the pollutant carried by raining flow on the pavement, reduces the burden of downstream sewage processing, has water storage and soil moisture retention functions, prolonging the plant maintenance period for the road isolation belt, and saves the water used for irrigation. The road isolation belt has the advantages of simple manufacture, low cost, and convenient enforcement, and is suitable for all kinds of the city roads.

The invention discloses a method for quickly constructing a water gate wall, which comprises five steps of constructing a temporary water barrier, constructing an entity temporary water battier, constructing a filling section, constructing a main water gate wall and constructing an external tunnel of the main water gate wall. Barrel-shaped building blocks are used as the aggregate, water can be got at the construction site, and only barrel bodies and little coacervated single-liquid material are needed to be transported, so that the labor intensity and the transportation volume are both greatly reduced, the construction speed is improved, and plenty of time is saved for rescue construction; the coacervated single-liquid grouting material reacts in the presence of water to generate gel, and the generated gel has certain strength and steady performance, is not decomposable and corrosion resistant, and cannot absorb water; two sides of each barrel body are provided with iron hoops, and the iron hoops of neighboring barrel bodies are fixed through bolts to form a net structure; the barrel bodies are connected with anchor rods on the two sides, the top and the bottom plate of the tunnel, so that the water gate wall can resist the impact of water pressure, the construction quality is effectively ensured, and fast construction for constructing the water gate wall is implemented.

The invention discloses a silicone sponge health care material and a preparation method and application thereof. The silicone sponge health care material comprises the following ingredients in percentage by mass: 60-70 percent of silicone main materials, 1-7 percent of a foaming agent, 5-15 percent of a deodorant bacteriostatic agent, 15-25 percent of anion powder, 5-18 percent of far infrared ray powder, 0.1-1.5 percent of a vulcanizing agent and 0.05-1.0 percent of a vulcanizing accelerator. The preparation method comprises the following steps of preparation of a mixture and mould pressing or injection molding. The silicone sponge health care material has the advantages of weight loss, water absorption, ventilation, bacteriostasis, deodorization and the like, and products made of the silicone sponge health care material are comfortable in wearing and wide in range of application.

The invention provides a food adsorption and antibacterial pad. The food adsorption and antibacterial pad is composed of a low-density polyethylene plastic film and an inner adsorption antibacterial layer, wherein fine holes are punched in the upper surface of the low-density polyethylene plastic film; the inner adsorption antibacterial layer is composed of an antibacterial coating and an adsorption layer; the antibacterial coating is fitted on the upper surface of a first non-woven fabric in a coating manner; the adsorption layer is uniformly sealed between the lower surface of the first non-woven fabric and the upper surface of a second non-woven fabric. The food adsorption and antibacterial pad has the advantages that the design is ingenious; the food adsorption and antibacterial pad has three functions of absorbing water, adsorbing objectionable odor and resisting bacteria, and can be used for absorbing liquid oozed by chilled fresh meat which is stored for a long time; the relative humidity in packages is reduced and the bacteria and the peculiar smell are reduced; the guarantee period of the chilled fresh meat on a tray is prolonged; the preparation method has a simple process and is convenient to operate.

The invention relates to a freckle-removing essence, which is not only capable of slowly fading freckles on faces of people, but also capable of enabling skin on the faces to become beautiful and white slowly. On the basis of A, B, D and E basic formulae, a C raw material is added; and furthermore, the C raw material is composed of ginsenoside extracting solution, pseudo-ginseng extracting solution, licoflavone extracting solution, Chinese angelica extracting solution and lucid ganoderma extracting solution. Compared with the prior art, the freckle-removing essence disclosed by the invention has the advantages as follows: because a strong penetrating agent, namely azone, and an antihistamine reagent, namely sophocarpidine, are used in the formula, the freckle-removing essence prepared by the invention is rapid to take effect and free from irritability; raw materials are convenient to buy and low in price; the production process is simple, therefore, the production cost of the freckle-removing essence is low; no any hormone or other substances hazardous to skin exist in the prescription, so that skin cannot be injured in the use process; and thus, the freckle-removing essence is welcome by the masses of users.

The invention provides a sewage treatment method by using a flowing microorganism bed and a filtering membrane. The method comprises the following steps: the step 1), discharging the sewage into an anaerobic pool, wherein the anaerobic pool has GPB active carriers and active bioproteins, and the GPB active carriers are 25-72% of the volume of the water body in the anaerobic pool, feeding activated sludge and the active bioproteins into the anaerobic pool, and enabling the GPB active carriers to be flowed in the anaerobic pool by a stirring motor; the step 2), discharging the sewage treated by the anaerobic pool into a sedimentation basin I; the step 3), discharging the sewage passing through the sedimentation basin I into an aerobic pool, wherein the aerobic pool has ACD active carriers and the active bioproteins; feeding the activated sludge and the active bioproteins into the aerobic pool, performing the aeration to the aerobic pool so as to enable the ACD active carriers to be flowed; the step 4) feeding the sewage passing through the aerobic pool into a sedimentation basin II, and discharging; and the step 5), filtering the dyeing sewage discharged from the sedimentation basin II by a porous ceramic membrane.

The invention discloses tile glue for a ceramic thin plate. The tile glue for the ceramic thin plate comprises the following components in percentage by weight: 20 to 32 percent of silicate cement, 40 to 48 percent of quartz sand, 0.8 to 6.4 percent of concrete expanding agent, 0.8 to 4 percent of dispersible latex powder, 0.08 to 0.48 percent of cellulose ether, 0.08 to 0.8 percent of early strength agent, 0.08 to 0.48 percent of thixotropic lubricant, 0.08 to 0.8 percent of wood fiber, 0.08 to 0.48 percent of water repellent, 0.08 to 0.48 percent of anti-whiskering agent and 16 to 24 percent of emulsion. The tile glue for the ceramic thin plate is energy-saving and environmentally-friendly, has excellent performance, can inhibit contraction, prevents cracking, avoids hollowing and has the advantages of slippage resistance, whiskering resistance, low water absorption, high wear resistance and the like.

The present invention belongs to the technical field of soil remediation and discloses a polycyclic aromatic hydrocarbon contaminated soil remediation material. The polycyclic aromatic hydrocarbon contaminated soil remediation material comprises the following components in parts by weight: diatomaceous earth, peat soil, humic acid, corn cob, nutrients, a surfactant, an oxidant and a compound microbial agent; the nutrients comprise rice bran, (NH4)2HPO4, urea, calcium superphosphate and plant ash; the surfactant is an anionic and non-ionic mixed surfactant; the oxidant is one of hydrogen peroxide activated sodium persulfate, potassium hydrogen persulfate or a Fenton reagent; the compound microbial agent comprises pseudomonadaceae powder, bacillus powder and fusarium powder; and the weight ratio of the pseudomonadaceae powder, bacillus powder and fusarium powder is 3:(1-5):(2-5). Compared with the prior art, beneficial effects are as follows: the polycyclic aromatic hydrocarbon contaminated soil remediation material is capable of degrading polycyclic aromatic hydrocarbons in the soil and also has an improved effect on the soil conditions of the soil.

The invention discloses an automobile lamp cleaning device of a new energy automobile, and belongs to the technical field of the new energy automobile. The automobile lamp cleaning device comprises atransverse electric telescopic rod, a clean electric telescopic rod, a water supply assembly, a cleaning hose, a cleaning agent adding assembly and a cleaning head, wherein the transverse electric telescopic rod is transversely arranged under the automobile lamp arranged at the front end of an automobile body; a cleaning electric telescopic rod inclined towards the automobile lamp is arranged on asleeve ring fixedly connected with the outwards pushing end of the transverse electric telescopic rod; a cleaning head is fixedly arranged on the outwards telescopic end of the cleaning electric telescopic rod; the cleaning head is connected with the water supply assembly through a cleaning hose; the water supply assembly comprises a motor, a water pump and an electromagnetic valve; the front endof the motor is sequentially provided with a water pump and an electromagnetic valve; the cleaning agent adding assembly consists of a cleaning agent storage tube, a guide rod, a top plate and an electromagnet; the cleaning head comprises an installing plate and wiping cotton. The wiping cotton can be pushed by the electric telescopic rod for adsorbing water stain on the surface of the automobilelamp, so that the automobile lamp is comprehensively cleaned; the brightness of the automobile lamp cannot be influenced.

The invention relates to an on-site test method of emulsified asphalt spraying amount, which particularly comprises following steps: (1) getting paper sheets being high in water absorption and not liable to break; (2) before test, weighing the mass and area of the paper sheets and placing the paper sheets on a pavement requiring to be tested; (3) after an asphalt spraying car passing through the pavement, calculating the emulsified asphalt spraying amount Q; and (4) after correction, dividing the mass of residue by the area of the paper sheets to obtain emulsified asphalt residue spraying amount Q', wherein a ratio value of the Q' to Q is the content of evaporated residue of the emulsified asphalt, which can be used for evaluating whether the quality of the emulsified asphalt satisfies a standard requirement or not. Compared with a method in the prior art, in the on-site test method of emulsified asphalt spraying amount, the employed paper sheets has a certain water absorption so that water in the emulsified asphalt is free of lost due to absorption. In addition, by means of correction of the emulsified asphalt residue amount, the emulsified asphalt is free from being aged and then reduced in quality during heating so that by means of the method, the emulsified asphalt spraying amount can be obtained accurately.

The present invention relates to a method for preparing a microporous metal layer on the macroporous metal surface. The specific process comprises: brushing a hydroxide slurry on the surface of a macroporous metal substrate by using a brushing method to block pores, drying, and progressively carrying out burnishing, washing and drying on the obtained surface of the metal substrate by using sand paper; mixing metal powder for preparing the microporous metal layer and an organic additive to prepare a suspension, coating on the surface of the metal substrate to form a billet, and carrying out high temperature sintering in an inert or reducing atmosphere; and finally using a chemical reagent and ultrasonic washing to remove the residual inorganic material in the substrate to obtain the high gradient pore structure porous metal.

The invention provides a wet type flexible movable pole plate electrostatic dust collector with rotating brushes. A dust collection pole plate of the electrostatic dust collector is made of flexible materials and is connected with a chain in a fastened manner through a connection plate fixed between the two layers of flexible materials. During normal operation, the chain is driven by a gear of a transmission device, and therefore the flexible pole plate is driven to rotate. A water collection tank is arranged at the bottom of the pole plate, the bottom of the pole plate is immersed in water in the water collection tank, the surface of the pole plate is unceasingly moistened in the rotation process, and the effect of dust removing and water covering is achieved; and meanwhile, the rotating brushes are arranged on the two sides of the pole plate so as to further remove pollutant on the surface of the pole plate. The wet type flexible movable pole plate electrostatic dust collector has the beneficial effects of being novel in structure, efficient, economical, practical, and the like.

The invention discloses a wall-mounted flower freshness protection package. The package comprises a freshness protection package body, a flow guide disc and a water sprayer. The freshness protection package body comprises elastic cords, a blank holder, a sucker and a package body fiber felt. The flow guide disc is composed of drainage channels, a blocking edge and water inlets. The blocking edge is arranged on the outer circle of the flow guide disc, and the whole flow guide disc is fixed at the top of the freshness protection package body by the aid of the elastic cords penetrating the blank holder. The water sprayer is composed of a tensioning ring, a water storage bag, a water delivery pipe and an umbrella-shaped nozzle and is fixed on an office table partition board through the sucker. By means of the wall-mounted flower freshness protection package, water and nutrients in a water retention layer can be fully absorbed by flowers to meet plant growing needs; by the aid of a water separation layer, watering can be not performed for a long time, so that water resources and labor are saved; stems of flowers can be prevented from being immersed in water for a long time, so that the flower freshness protection time is prolonged; by the aid of the water sprayer, the watering amount can be controlled, and even watering is facilitated; by means of the whole wall-mounted structure, the usage is convenient, and planar space is not occupied.

The invention relates to a structure of a respirator, in particular to the structure that combined layers are inserted between interlayers inside the respirator. The respirator is provided with a breathing layer at the outer part and a protective layer on the inner side, and at least more than one filtering layer is preset between the breathing layer and the protective layer; and at least more than one combined layer can be inserted between the breathing layer and the filtering layer, between the filtering layer and the protective layer and between the filtering layers respectively, or the combined layers can be directly synthesized on at least one surface of the interlayers, wherein, the combined layers are subject to the combination treatment with cyclodextrin and chemical compounds by taking polybasic acids as a bridge, thereby having the characteristics of water absorption, smell absorption, aromatization, human treatment, insect repellence, bacteria resistance and the like. The combined layers are arranged between the interlayers inside the respirator, thereby serving the combined type functions so as to gain the using effect, avoid the improper situation about peculiar smell and moisture when in use and improve the use safety of the respirator.

The invention provides a paper packaging material and a paper container made of the same. A laminating layer is formed on each of the two sides of paper in a laminating manner, the laminating layers are formed by extruding polyethylene by a laminating machine and attaching polyethylene to the surfaces of the paper, and a layer of composition fiber cloth made of the mixture of polyethylene and polyester is attached to one side of each of the two laminating layers, so that the paper packaging material can be formed and can provide the benefits of heat insulation, absorption and environment friendliness. The paper packaging material can be manufactured into various paper containers; when the composition fiber cloth is positioned on the inner edge of a paper container, the paper container has the effects of water absorption, oil absorption and fresh keeping, and when the composition fiber cloth is positioned on the outer edge of the paper container, the paper container has the effects of heat insulation, heat preservation and cold insulation; on the basis of the above constituents, the thickness of the paper packaging material can be reduced, and the composition fiber cloth is attached to the paper, so that the strength of the paper packaging material can be increased, further the benefit of cost reduction can be achieved.

The invention relates to a method for producing a seedling growth or culture substrate by means of sophora flavescens powder. The method is characterized by comprising the steps that sophora flavescens is smashed, water is splashed to the sophora flavescens powder to wet the sophora flavescens powder, organic fertilizer, chemical fertilizer, crude fibre degrading bacteria and rice bran are added into the wet sophora flavescens powder to be evenly mixed, stacking and fermentation are carried out at the environmental temperature ranging from 15 DEG C to 40 DEG C, the top and the bottom of the fermentation stack are sealed by plastic membranes, and therefore moisturizing and temperature rising are achieved; the stack is turned over when the stack center temperature is higher than 65 DEG C, the relative water content is kept to range from 60% to 65%, and fermentation is completed after the stack center temperature descends to reach the environmental temperature; after fermentation is completed, organic fertilizer, perlite and vermiculite are added into the obtained sophora flavescens fermentation product, wherein the volume ratio of the sophora flavescens fermentation product to the organic fertilizer to the perlite to the vermiculite is 5:2:1:2 or is 6:1:1:2, and finally sufficient and even stirring is carried out. The compound substrate is obtained by processing the sophora flavescens powder, and has the advantages of absorbing water, achieving ventilation, being full of nutriments and the like.

The invention discloses a preparation method of an expansion rate-controllable steel pipe and steel-slag concrete column, and belongs to the technical field of civil engineering. The method is that steel-slag sand is used for replacing all fine aggregates, and ordinary portland cement, steel-slag sand, gravels and water are utilized to prepare the expansion rate-controllable steel pipe and steel-slag concrete column. The method specifically comprises the preparation steps of selecting a steel pipe and steel-slag concrete at a certain strength grade according to the requirement of the bearing capacity of the steel pipe and steel-slag concrete column; determining self stress of the steel pipe; calculating to determine the free expansion rate of the slag-steel concrete; calculating to determine the average particle size of the steel-slag stand; selecting the steel-slag sand with reasonable graduation; calculating to determine the quantity of the used portland cement, the steel-slag sand, the gravels and the water according to a design method of a mixing ratio of ordinary concrete; and preparing the steel pipe and steel-slag concrete column, pouring the steel pipe and steel-slag concrete column and maintaining the steel pipe and steel-slag concrete column. With the adoption of the prepared steel pipe and steel-slag concrete column, the core concrete can early be in a three-directional pressing state, and therefore, the bearing capacity and ductility of the steel pipe concrete can be obviously improved.

The invention discloses a method for preparing a plasticizer by using purified terephthalic acid (PTA) residue. According to the method, the mixed benzoate plasticizer is prepared by taking the PTA solid residue as a raw material; the impurities such as a catalyst in the PTA residue are recycled, and the mixed benzoate plasticizer is prepared by enabling the PTA residue to have an esterification reaction with monohydric alcohol by using a one-pot method under the efficient catalysis of acidic ionic liquid. The ionic liquid used in the method can be recycled and has a good catalytic effect; the plasticizer is good in plasticizing performance, and can realize the efficient recycling of the PTA residue so as to change waste into valuable, thus having good economic benefit and social benefit.

The invention discloses a binder used for 3D printing materials. The binder is composed of a component A and a component B at a mass ratio of 2-3:1; the component A comprises, by mass, 50 to 60 partsof acrylic emulsion, 30 to 40 parts of polyvinyl alcohol, 10 to 13 parts of polyvinyl acetate emulsion, 8 to 15 parts of non-ionic polyacrylamide, 20 to 40 parts of soybean protein glue, 2 to 3 partsof sodium hypochlorite, 7 to 12 parts of sodium dodecyl benzene sulfonate, 15 to 20 parts of inorganic gel, 5 to 8 parts of hydroxypropyl methyl cellulose ether, 3 to 6 parts of a stabilizing agent, and 3 to 5 parts of a thickening agent; and the component B comprises, by mass, 35 to 45 parts of polylactic acid, 15 to 20 parts of aerosil, 30 to 40 parts of wax maize starch, 10 to 15 parts of ethylene glycol diacetate, 20 to 35 parts of alumina sol, 8 to 13 parts of allyl methacrylate, 15 to 22 parts of absolute ethyl alcohol, 5 to 8 parts of anhydrous potassium carbonate, 15 to 25 parts of anhydrous magnesium sulfate, 2 to 4 parts of glycol, 5 to 9 parts of nanometer manganous oxide, 3 to 5 parts of a composite initiator, 3 to 6 parts of a curing agent, and 6 to 11 parts of an activator.

The invention discloses a preparation method of expansive concrete containing steel slag, and belongs to the technical field of building materials. Different types of expansive concrete is prepared from ordinary portland cement, fine aggregate (steel slag sand and yellow sand), coarse aggregate (coarse steel slag and broken stone) and water. The preparation method comprises specific steps as follows: seven groups of samples which basically meet the technical parameter requirements of expansive concrete are preferably selected according to an orthogonal test; sample classification which is close to the expansion rate of expansive concrete is selected, and a mixture ratio of the expansive concrete containing the steel slag is preliminarily determined; whether the compressive strength of the expansive concrete containing the steel slag meets the design requirements of expansive concrete is calculated, and the water cement ratio of the expansive concrete containing the steel slag is adjusted; whether the expansion rate of the expansive concrete containing the steel slag meets the design requirements of the expansive concrete is calculated, and the average grain diameter and the substitution amount of steel slag sand in the expansive concrete containing the steel slag are adjusted; and then, the expansive concrete containing the steel slag is prepared, cast and maintained. According to the preparation method, the compressive strength and the expansion rate of the expansive concrete containing the steel slag can be adjusted, and the engineering application range is wide.

The invention relates to a method for producing a horticultural substrate through amorpha fruticose branches. The method is characterized by including the following steps: smashing amorpha fruticose branches into amorpha fruticose branch powder, spraying water on the powder until the water content is 60%-65%; adding an organic fertilizer, urea and zymin, uniformly mixing; accumulating and fermenting at the environment temperature of 10 DEG C to 40 DEG C, completing fermentation until the center temperature of the pile is reduced to the environment temperature; fully mixing the fermented product obtained after fermentation with perlite and vermiculite as per the volume ratio of 3:1:2 to obtain the seedling culture substrate, or fully mixing the fermented product obtained after fermentation with perlite, vermiculite and organic fertilizer as per the volume ratio of 7:2:1:1 to obtain the culture substrate. Through the adoption of the method, amorpha fruticose branches are used as raw materials of substrates for vegetable farming and seedling culture, and the method has the following advantages: (1), the amorpha fruticose resource is renewable; (2), the source is wide, and the price is low.

The invention relates to the technical field of snow-melting agents, and relates to a snow-melting agent. The snow-melting agent is prepared from magnesium chloride, anhydrous calcium chloride and silicate according to the mass ratio of 1:(0.1-0.5):(0.1-0.5). The invention further provides a preparation method of the snow-melting agent; the preparation method comprises the following steps: I, crushing anhydrous calcium chloride until the practical size of the crushing anhydrous calcium chloride is 1-2 mm; II, mixing the magnesium chloride, the anhydrous calcium chloride and the silicate according to the mass ratio of 1:(0.1-0.5):(0.1-0.5), and uniformly stirring. The novel snow-melting agent provided by the invention is wide in raw material resource, low in cost and water-absorbing and anti-sliding. As the tailings generated after a potash fertilizer is prepared are adopted as a constituent component magnesium chloride, the waste resource is utilized, the environment can be protected, and the cost is low.

The invention discloses a water-absorbing wear-resistant packaging material which is prepared from the following raw materials in parts by weight: 40 parts of biodegradable plastic masterbatch, 10 parts of polystyrene, 10 parts of corn starch, 8 parts of citrus peel powder, 2 parts of glycerin, 3 parts of a heat stabilizer, 2 parts of bamboo fiber, 5 parts of glycerol, 3 parts of barium sulfate, 4 parts of a wear-resistant additive, 1 part of chitin fiber, 1 part of allicin, 3 parts of nano antimony tin oxide, 1 part of a coupling agent and 1 part of an ultraviolet absorbent. The plastic packaging material provided by the invention is degradable and can be consumed by the environment after being composted, so as to greatly relieve the pollution to the environment; the added citrus peel powder and bamboo fiber have water-absorbing, antibacterial and antioxidant effects; the added chitin fiber and allicin can effectively inhibit the breeding of bacteria in packaged foods and prevent corrosion, so as to effectively guarantee the freshness and use safety of the packaged foods; meanwhile, the water-absorbing wear-resistant packaging material has the advantages of good wear resistance, conductivity, weather resistance, stability, ultraviolet resistance and aging resistance.