84results about How to "Play a curing role" patented technology

The invention relates to water soluble acrylic acid epoxy resin and a preparation method thereof. The epoxy resin is emulsion formed by neutralizing and self-emulsifying a product of a catalytic esterification reaction of acrylic acid resin and epoxy resin, and the variation of tu-4 cup viscosity of the emulsion stored for 6 months is less than 5 percent; epoxy equivalent of the epoxy resin is between 180 and 5,000g / mol, and the epoxy resin accounts for 10 to 80 percent of gross weight of the epoxy resin and the acrylic acid resin; the acrylic acid resin is polymerized from hydroxyl-containing acrylic acid, carboxyl-containing acrylic acid, other acrylic acids and styrene monomers which are initiated by peroxide, and has the acid value of between 50 and 500mgKOH / g and the number average molecular weight of between 5,000 and 60,000g / mol; and the epoxy resin with the epoxy equivalent less than 1,300g / mol does not need bisphenol A chain extension, has simple operation, and is convenient for regulating the proportion of the epoxy resin. The method can be used for preparing the water soluble acrylic acid epoxy resin with wider proportion of the epoxy resin and stable storage.

The invention provides an in-liquid leaking blocking agent for well drilling and a preparation method thereof. The in-liquid leaking blocking agent for the well drilling and the preparation method arecharacterized in that a main agent which is resin is optimally selected, and a latent curing agent which is of a microcapsule structure is adopted, and the problem of conflict between long construction period of the blocking resin and quick curing can be solved; an accelerant is added to adjust the curing temperature and time; a density regulating agent and a viscosity regulating agent are addedto control the density and the viscosity to be within the optimal range, so that the prepared blocking agent meets the requirements on leaking blocking and water stopping of tubular columns of a 0-150DEG C wide-temperature-range oil well; the curing well section and the curing time can be customized based on the requirement of each well; the viscosity does not obviously change under certain temperature and within certain time; the blocking agent then is quickly cured; and after being cured, the blocking agent is high in pressure intensity, tensile strength and bending strength and meets the use requirement of leaking blocking and water stopping of a composite oil well environment; in addition, the preparation technology is simple and convenient; the reaction condition are mild and easy tocontrol; and the blocking agent is high in production and popularization and application value.

The invention discloses a method for solidifying sludge of an urban sewage treatment factory by using ardealite, coal ash and carbide slag. The dehydrated sludge of the urban sewage treatment factory is solidified by a solidifying agent prepared from common industrial solid waste such as ardealite, coal ash and carbide slag; the solidified sludge meets the embedding indexes (the transverse shearing intensity of 25 kN / m<2> and water content of 45 percent) specified in the Urban Sewage Treatment Factory Sludge Handling-Mixing and Embedding Sludge Quality (GBT23485-2009); the pollutant concentration of solidified sludge leachate meets the requirement specified in the Living Refuse Embedding Field Pollution Control Standard and can be embedded in a living refuse embedding field and used as covering soil in the embedding field or can be used for other building basic filling constructions.

The structure of the complex low-voltage electric heating film (CLEHF) consists of the electric heating inorganic compound (EHIC), the hi-temperature durable (HTD) isolator, the electrodes and the anti-oxidation HTD isolation layer. The EHIC consists of the carbon system inorganic material, the rare-earth material, the metal oxide, the inorganic compound and the polymerization liquid medium adhesive. The manufacture technology of CLEHF includes: ingredient configuring, mixing, skiving, spraying, solidifying and forming. With a low work voltage of 12 volts, CLEHF heats up to 100 degrees centigrade in only 50 seconds. This invention possesses advantages of fast response time, high heating efficiency and wide application range. Depending on different features and usages of various heater bodies, different materials are selected to form different shapes of heating films. Therefore, this heating film adapts to all handy low voltage electric heating apparatuses.

The invention discloses a land restoration method for an abandoned sand mining field and relates to the technical field of abandoned land recycling methods. The restoration method includes the following steps: raw materials are transported to the field, the raw materials are smashed for preparation, the smashed raw materials are mixed and stirred, the stirred raw materials are fermented, and the processed raw materials are paved and rolled so that the abandoned sand mining field is filled and leveled up. The land restoration method for the abandoned sand mining field has the advantages that the land restoration burdening is scientific and reasonable, the quality of comprehensive backfill is high, and the physical properties of the land such as the bearing capacity and the shear force and the physical and chemical indexes of soil are fully considered. Therefore, the land restoration method for the abandoned sand mining field fully ensures the stability of the land topography restoration and the good cultivation function, provides quality assurance for the restoration and reconstruction of the ecological system, facilitates inspection and management, and is high in economic benefits, ecological benefits and environmental protection benefits.

The invention discloses silicon carbide ceramic paste for photocuring and a preparation method thereof. The paste is prepared by mixing SiC mixed powder, a dispersing agent, a monomer, a compatilizerand a photoinitiator, wherein the surface of the SiC mixed powder is coated with a SiO2 layer, so that the refractive index difference between the final paste and light-cured resin is reduced, and then printing efficiency is further improved. SiO2 can improve the solid phase content of the whole slurry, so that the sintering density of sintered ceramic and the mechanical property of finally formedceramic can be improved during subsequent ceramic sintering. Through addition of the dispersing agent into the slurry, the agglomeration phenomenon of the slurry can be reduced, the dispersity is improved, and the solid phase content of the whole slurry can be increased. Verification finds that the solid phase content in the paste can finally reach 40%-60%.

The invention relates to the technical field of highway maintenance, and discloses a water-based reinforced type fog sealing layer material for an asphalt pavement, and a preparation method and a construction method of the water-based reinforced type fog sealing layer material for the asphalt pavement. The fog sealing layer material comprises a lower water-penetration-preventing sub-layer and an upper anti-skidding wear-resisting sub-layer, wherein materials for preparing the lower sub-layer contain an emulsifier, water, an organic solvent, a dispersant, an additive, a penetrating agent, a viscosifier and asphalt, and materials for preparing the upper sub-layer contain an emulsifier, water, an organic solvent, a dispersant, an additive, a penetrating agent, a viscosifier, an ultraviolet-resistant aging agent and asphalt. The construction method of the fog sealing layer material is a layered spreading method and comprises the following steps: mixing mixed liquor of the materials for preparing the lower sub-layer with a sand material to obtain a mixture, spreading the mixture on the asphalt pavement to form the lower water-penetration-preventing sub-layer, drying, spraying mixed liquor of materials for preparing the upper sub-layer on the lower water-penetration-preventing sub-layer, and spreading the sand material to form the upper anti-skidding wear-resisting sub-layer. The water-based reinforced type fog sealing layer material for the asphalt pavement, the preparation method and the construction method d of the water-based reinforced type fog sealing layer material for the asphalt pavement, disclosed by the invention, are used for pavement preventive maintenance, can improve the waterproof performance, anti-skidding performance, firmness and ultraviolet resistant aging performance, and are environmentally-friendly and economical.

The invention relates to a hydrogen-containing silicone oil emulsion type waterproofing agent. An emulsified system is prepared by compounding hydrogen-containing silicone oil and cationic surfactant or nonionic surfactant, weak acid is added to regulate pH value, and the emulsified system is subjected to high-shear emulsion to form a hydrogen-containing silicone oil emulsion. The hydrogen-containing silicone oil emulsion type waterproofing agent has the effects of waterproofing, moisture proofing, mould proofing, sterilization and the like, and can be widely applied to waterproofing of building materials, waterproofing, moisture proofing and mould proofing of historic buildings, and waterproofing and mould proofing of paper.

The invention relates to the technical field of road maintenance and discloses an oil enhanced fog seal material for asphalt pavement and a preparation method and a construction method of the oil enhanced fog seal material. The fog seal material comprises a waterproof permeable lower sublayer and a non-slip wear-resistant upper sublayer, wherein the upper sublayer and the lower sublayer are respectively composed of emulsion materials and sand on the layers; the emulsion material on the lower sublayer contains petroleum asphalt, solvent oil, an oil penetrating agent, a tackifier and an additive; and the emulsion material on the upper sublayer contains petroleum asphalt, solvent oil, an oil penetrating agent, a tackifier, an additive and an ultraviolet aging-resistant agent. The construction method of the fog seal material refers to a layered spreading method, namely mixing the emulsion material and sand on the lower sublayer and then spreading the mixture on the asphalt pavement so as to form the waterproof permeable lower sublayer, spraying the emulsion material on the upper sublayer on the waterproof permeable lower sublayer after drying, and spreading the sand so as to form the non-slip wear-resistant upper sublayer. The fog seal material disclosed by the invention is used for preventive maintenance of roads, and the water resistance, skid resistance, firmness and ultraviolet aging resistance of the pavement can be improved.

The invention discloses a preparation method of a soil stabilizer for remediation of heavy metal contamination, and belongs to the technical field of preparation of soil stabilizers. The preparation method includes: grinding and sieving sepiolite prior to being mixed with and soaked in hydrochloric acid, then drying flushed filter residue to prepare acid-modified sepiolite, then preparing banana skin into granules prior to soaking in sodium hydroxide solution, flushing and drying filter residue soaked and filtered, then roasting obtained banana skin activated carbon with a muffle furnace, and putting a mixture prepared by stirring acid-modified sepiolite, banana skin activated carbon, red mud, hydroxyapatite, aluminium oxide powder and cow dung together with perlite powder, sodium carbonate, zeolite, sodium alginate, sodium methylsiliconate, hydroxy-benzenesulfonic acid and sodium dodecyl benzene sulfonate into a dispersion kettle for mixing to obtain the soil stabilizer. The soil stabilizer has strong adsorption capacity in heavy metals in soil, has repairing and solidification effect in soil, and has broad market prospect.

The invention relates to the technical field of manufacturing of artificial fiberboards, in particular to a method for producing a fiberboard containing an ultramicro amount of residual formaldehyde. The method for producing the fiberboard comprises the technological steps of preparation of adhesive, manufacturing of wood fibers, adhesive application, drying, mat formation and pre-pressing, hot pressing and obtaining of a finished product. According to the method, forest logging residues or wood processing residues or bagasse or other materials are used as raw materials for producing the fiberboard, waste materials are changed into valuable things, and full utilization of wood resources is effectively achieved; the adhesive used for producing the fiberboard is adhesive containing only a micro amount of residual formaldehyde, in this way, environmental friendliness and safety are achieved, and the fiberboard has good water resistance and high bonding strength; the fiberboard produced by using the adhesive hardly contains residual formaldehyde and high in binding powder; the content of substances harmful to human bodies is low, the substances harmful to the human bodies hardly exist, and thus harm to the human bodies is reduced; in addition, the internal structure of the board is uniform, the density is proper, the dimensional stability is high, the quality is stable, and the service life is long.

The invention relates to an ultra-potent composite for decontaminating hazardous chemical substances, which is characterized by comprising two or more than two buffer systems, an MH-01 and the like. The composite can transform the hazardous chemical substances such as acid, alkali, oxidant, reducing agent, complexing agent, dissolving agent and the like into products harmless to human and the environment and avoid secondary damage and contamination. The composite has better advantages and potentials in the aspects of the decontamination spectrum, the decontamination valence, the safety and the like of the hazardous chemical substances in comparison with marketing products containing single corrosion resistance components, and is suitable for all the fields relevant to acid, alkali, oxidant, reducing agent, complexing agent and dissolving agent.

The invention discloses a preparing method of a farm-oriented bacterial manure with activated oyster shell powders as a carrier. The method comprises the steps of cultivating azotobacter chroococcum, bacillus megatherium, jelly bacillus, bacillus subtilis, 5406 antibiotic bacteria and trichoderma viride in each suitable culture medium respectively and making living bacteria counts in each bacteria solution which has been cultured reach 3-5 hundred million / g to be used for standby applications; measuring cultured azotobacter chroococcum bacteria solution, bacillus megatherium bacteria solution, jelly bacillus bacteria solution, bacillus subtilis bacteria solution, 5406 antibiotic bacteria bacteria solution and trichoderma viride bacteria solution respectively according to a volume ratio of 2 : 2: 2: 2: 1: 1, mixing the mixtures evenly to obtain a mixed bacteria bacteria solution; mixing the activated oyster shell powders with the mixed bacteria bacteria solution evenly according to a mass ratio of 3: 3-5 to obtain a mixed fertilizer, airing the mixed fertilizer to obtain the farm-oriented bacterial manure. According to the preparing method of the farm-oriented bacterial manure with activated oyster shell powders as a carrier, soil physical and chemical properties can be improved, crop yield can be increased and disease-resistant performance of plants can be strengthened.

The invention provides a method for preparing and constructing a primer of a waterproof coating and the primer of the waterproof coating. The primer of the waterproof coating is composed of a component A, a component B and a component C, wherein the component A is epoxy resin which comprises epoxy resin E51 or epoxy resin E44; the component B is a non-ionic emulsifier modified amine curing agent which comprises at least one of modified fatty amine and cycloaliphatic amine; the component C is water; when the component A is the epoxy resin E51, the primer comprises the substances in parts by weight: 15-20 parts of the component A, 25-30 parts of the component B and 50-60 parts of the component C; when the component A is the epoxy resin E44, the primer comprises the substances in parts by weight: 15-20 parts of the component A, 10-20 parts of the component B and 60-75 parts of the component C. According to the scheme provided by the invention, by using the primer of the waterproof coating, bubbling and stripping phenomena of constructed rubber asphalt waterproof coating are avoided.

The invention discloses a waterborne antirust paint with rust and a preparation method of the paint, and belongs to the technical field of paints. The paint comprises a component A and a component B which are mixed at the time of use; the component A is prepared from waterborne epoxy resin, modified aluminum tripolyphosphate, a conversion agent gallic acid and other aids commonly used for paints;the component B is a homemade waterborne modified tea polyphenol which is prepared through a Mannich reaction of tea polyphenol, acetaldehyde and dimethylamine. The paint prepared by means of the method has chelation with a matrix in the use process, the adhesive force of the paint is greatly increased, the conversion of the rust is facilitated, and the paint has excellent curing force and corrosion resistance and is environmentally friendly and free of pollution.

The invention belongs to the technical field of inorganic materials, and in particular relates to a method for preparing a mullite honeycomb ceramic carrier with all crystal whisker structure. The method for preparing the mullite honeycomb ceramic carrier with all crystal whisker structure comprises the following steps: using chitosan as an organic polymer monomer, and using glutaraldehyde as an initiator for preparing the mullite honeycomb ceramic carrier by combining with a mullite crystal whisker in-situ growth technology, to obtain a mullite honeycomb ceramic block material composed of crystal whiskers all growing in situ, wherein the specific steps are 1) preparation of ceramic slurry, 2) curing and molding of slurry, and 3) drying of samples and sintering of a green body. The method provided by the invention can adjust the porosity by changing the solid content of the ceramic slurry; the whole ceramic block is composed of in-situ grown mullite whiskers and has good mechanical property.

The invention relates to the technical field of preparation of aqueous acrylic acid highlight finish paint for a tape measure, in particular to aqueous acrylic acid highlight finish paint for the tape measure and a preparation method thereof. The finish paint comprises the following components in part by weight: 20 to 70 parts of 30 to 70-percent aqueous epoxy modified acrylic resin solution for the tape measure, 5 to 20 parts of aqueous amino resin, 0.1 to 0.5 part of aqueous defoamer, 0.01 to 0.8 part of aqueous leveling agent, 1 to 10 parts of aqueous adhesive force accelerator, 1 to 10 parts of aqueous thickener, 0.5 to 10 parts of aqueous epoxy resin, 10 to 50 parts of running water for drinking and 0.5 to 2 parts of ammonium neutralizer. In the invention, the performance indexes of the paint film can completely reach or even excess the indexes of oil paint for the tape measure; meanwhile, paint film has high gloss and high hardness and is basically environmentally-friendly.

The invention discloses a preparation method of health-care kudzu root tea, which is characterized in that it comprises the following aspects: (1) cutting into strips, removing the outer skin, and cutting kudzu root into 3-4cm long strips; (2) baking at low temperature, baking kudzu root strips until the water content is 30%-40%; (3) soaking in hot water, soaking in a constant temperature water bath at a temperature of 41°C-44°C, to obtain Pueraria root clear liquid and Pueraria insoluble components; (4) enzymatic hydrolysis and aging, to the insoluble component solution Add amylase to the mixture, enzymatically hydrolyze at constant temperature, and carry out cooking and aging treatment; (5) ferment probiotics, add probiotic powder with a mass of 3%-4% of the aging mixture, and carry out the fermentation process; (6) make dry powder, bake Drying and pulverization treatment to obtain pueraria root extract powder and pueraria root powder; (7) pueraria root tea preparation, weighing pueraria root powder, pueraria root extract powder, licorice powder, etc., mixed evenly, and packaged in soaking bags, each bag 10g.

The invention relates to a gelatinizer including the following components, by weight: 30-350 parts of magnesium- and aluminum-rich silicate (Mg5Si8O20(OH)2(OH2)4.4H2O), 80-150 parts of high-activity aluminum silicate, 5-15 parts of boric acid (H3BO3), 5-15 parts of citric acid (C6H8O7), 2-15 parts of phosphoric acid (H3PO4), 5-10 parts of silicon sol (SiO2.nH2O), 1-3 parts of a siloxane waterproof agent, 800-1200 parts of light calcined magnesium oxide, 300-500 parts of magnesium chloride hexahydrate, 80-120 parts of magnesium sulfate heptahydrate, and 400-600 parts of water. The gelatinizer, on the basis of maintaining the technical indices, such as fireproof performance, waterproof performance and the like, is free of formaldehyde when being used for cementing and adhering various building decorative materials, so that the gelatinizer increases utilization rate of house, provides a green and environment-friendly living environment, and is beneficial to body health of residents.

The invention provides glue for pouring a conductive sliding ring body. The glue is prepared from the following components: 100 parts of epoxy resin, 8 to 10 parts of dibutyl phthalate, 10 to 15 partsof beta,beta'-dimethylaminoethoxy-1,3,6,2-trioxaborocane, 50 to 60 parts of silicon micro-powder and 0.01 to 0.02 part of carbon black powder. According to the glue for pouring the conductive slidingring body, provided by the invention, the insulating resistance and compressive strength of the conductive sliding ring body are effectively improved. The invention further provides a pouring methodof the conductive sliding ring body; the pouring method is simple to operate and has strong operability.

The invention provides filler for self-repairing of an insulating layer of a cable and a preparation method. Urea formaldehyde resin is added after surface modification treatment through nano silica and uniformly dispersed, a composite is obtained, the composite is sprayed to an enveloping machine with a curing agent added, a capsule with the curing agent as a core and the urea formaldehyde resin / nano silica composite as a shell is formed, a solvent is added, crushing is performed after freezing, a prepolymer is sprayed and irradiated by ultraviolet, and a microcapsule with a double-layer structure is prepared and is the filler for self-repairing of the insulating layer of the cable. By means of the method, the microcapsule is formed by coating the curing agent with urea formaldehyde resinand nano silica composite, self-repairing of the insulating layer of the cable is realized, the success rate and the repairing efficiency of self-repairing are increased, the service life of the cable is prolonged, and the product safety is improved; the preparation process is simple, the production cost is low, the repairing effect is good, and the application prospects are good.

The invention relates to a preparation method of a ceramsite light water permeable brick road. The method comprises the following steps that S1, firstly, cement, straw particles, ceramsite, overburntlime, a water reducing agent and a water retaining agent are mixed to be uniform, then, mud is added for stirring for 2-6 min, and then standing is performed for 1-3 h; S2, foamed particles are addedinto the product obtained in S1, the mixture is placed under the pressure of 8-12 MPa for pressurizing treatment for 0.5-1.5 h, and then the mixture is taken out for standing under the temperature of90-120 DEG C for 6-8 h; S3, the product obtained in S2 is placed under the temperature of 600-800 DEG C for calcinating for 2-3 h, then, the product is taken out for natural cooling to 80-120 DEG C for maintaining for 12-24 h. The prepared light water permeable brick solves the problems that in the prior art, a light water permeable brick is poor in water permeability and low in mechanical strength, and a foundation is loose due to the fact that water is likely to permeate the material after long-term use.

A related method for utilizing urban life sewage sludge to product cement road bricks comprises the following steps: uniformly stirring lift sewage sludge with gypsum powder in a stirring machine to prepare grey gypsum and preparing grey gypsum particles; performing high-temperature drying on the grey gypsum particles in afar-infrared high-temperature furnace; mixing the grey gypsum particles with mineral slag, cement clinker and fly ash according to a ratio and stirring uniformly; crushing the mixed material, grinding and screening to prepare cement; adding water into the cement prepared in the above steps and yellow sand according to a ratio, and stirring uniformly; and preparing bricks from the mixed material through cutting forming, drying the bricks with steam, and maintaining at normal temperature to prepare the cement road bricks. By producing the cement road bricks from the urban life sewage sludge, the road bricks are high in strength and good in durability, effective utilization of urban life sewage sludge is realized, secondary pollution of urban life sewage sludge to environment is mitigated, and the harmless, quantity-reducing recycling utilization purposes of urban life sewage sludge are realized.

The invention relates to the field of fire-proof materials, in particular to a fire-proof sealing material of a cable channel and a preparation method and construction method of thefire-proof sealingmaterial. The fire-proof sealing material is prepared from the following raw materials in parts by weight: An A component: 80-160 parts of polyether polyol, 30 parts of polyester polyol, 10 parts of halogen-free flame retardant polyester polyol, 30-50 parts of a microcapsule flame retardant and smoke suppressant, 10-20 parts of an inrumescent flame retardant, 5-10 parts of modified nano compositeparticles, 3-6 parts of a film-forming agent, 8-15 parts of pigments and fillers, 8-15 parts of n-pentane, 1-6 parts of a catalyst, 4-8 parts of foam stabilizer and 1-4 parts of water; and a B component: 130-220 parts of polyarylpolymethylene isocyanate. The fire-proof sealing material has the performance of good fire resistance and flame retardant ability, adhesive force and weather fastness, a halogen foaming agent is not contained, and thus the environment cannot be polluted.

The invention relates to a dredger fill solidification reinforcing agent which comprises the following components, by mass percent, 50-60% of fly ash, 9-13% of lime, 30-34% of portland cement and 0.4-0.7% of enhanced activation exciting agent; the portland cement is ordinary portland cement; the enhanced activation exciting agent comprises, by mass percent, 50-70% of lignin, 10-15% of natural high-molecular polymers, 15-35% of amide organic matters and 1-5% of sodium salt; and when in use, the dredger fill solidification reinforcing agent is added according to 7-16% of the wet mass of a dredger fill body to be reinforced and stabilized, and is mixed with the dredger fill body. With the adoption of the novel, efficient, environment-friendly and economical dredger fill solidification reinforcing agent, the pollution to the environment from the fly ash is alleviated, the recycling of waste is realized, and the problem that the bearing capacity of a dredger fill foundation in a project is not sufficient is solved.

The invention belongs to the technical field of an acidulant, and discloses a dried orange peel flesh fermentation type animal feed acidulant and a preparation method and application thereof. The method comprises the following steps of (1) thoroughly cleaning flesh without peel, performing drying by airing, performing breaking, adding sugar substances, performing standing, removing precipitate, and obtaining juice, wherein the sugar substances are one or more of cane sugar or glucose, and the flesh is dried orange peel flesh or citrus flesh; (2) placing the juice in a fermentation device, adding mixed strains of microzymes, lactic acid bacteria and acetic acid, and performing fermentation to obtain fermentation liquid, wherein the fermentation temperature is 25-37 DEG C, the fermentation time is 3-5d, during fermentation, stirring is performed for one to two times each day, and the stirring depth is smaller than or equal to 1 / 6 of the depth of the juice; and (3) uniformly mixing the fermentation liquid with agar, performing standing, and performing solidifying to obtain the acidulant. According to the method, the waste can be well utilized, and the method is simple, environmental-friendly, safe, and low in depletion for equipment, and the fermentation time can be shortened. The obtained acidulant has slow-release effects and good bacteriostasis effects.

The invention discloses a treatment method for repairing activity of cornifin in wig, comprising the following steps: (1) treating wigs by using clear water, an acetic acid solution and an ethanol mixed solvent, and cleaning to obtain pretreated wigs; (2) suspending the pretreated wigs in a reaction vessel, treating by introducing ozone and ammonia gas, and treating the wigs by using red wine mixed liquor and an activator solution to obtain activated wigs; (3) steaming, fermenting and extracting by using fleece-flower root, American ginseng, hairgrass in polar regions and the like, adding casein phosphopeptides and the like and stirring and mixing to obtain a nutrient solution; (4) respectively carrying out weakly ionization treatment and fumigation on the activated wigs to obtain fumigated wigs; (5) suspending the fumigated wigs in an enclosed barrel, and respectively introducing atomization deionized water and essential oil for thermal insulation; and (6) covering and coating the moisturized wigs with cement gum and steaming, and carrying out UV-irradiation to obtain repaired wigs.

The invention relates to the technical field of spraying pipelines, and relates to a manufacturing process of a desulfurization spraying pipeline. The manufacturing process comprises the following steps: (1) cladding a polyethylene film: coating an anti-wear coating on the outer side wall of a mould pipe, and cladding the polyethylene film on the outer side wall of the mould pipe after completionof the coating of the anti-wear coating; (2) setting a surface layer; (3) setting a structural layer; (4) setting the outer surface; and (5) demoulding. The manufacturing process of the desulfurization spraying pipeline disclosed by the invention has the advantages that through cooperation between the polyethylene film and the anti-wear coating, the mould pipe is conveniently separated from the spraying pipeline, and in a separation process, the effect of friction loss on the inner side wall of the spraying pipeline is reduced.

The invention provides a charged foreign matter clearing unmanned aerial vehicle protection cover, which comprises a first connecting plate and a second connecting plate, wherein the end part of the first connecting plate and the end part of the second connecting plate are mutually hinged; one end of the first connecting plate is provided with a second fixing ring; the upper part of the second fixing ring is provided with an upper protection net; the upper protection net comprises a plurality of first arc-shaped rods, a copper wire layer and a first fixing ring. The first arc-shaped rods and the second arc-shaped rods are respectively made of carbon fiber, so that the first arc-shaped rods and the second arc-shaped rods can ensure the sufficient intensity of the charged foreign matter clearing unmanned aerial vehicle protection cover, and meanwhile, the weight of the charged foreign matter clearing unmanned aerial vehicle protection cover is reduced to the maximum degree. The first arc-shaped rods and the second arc-shaped rods can surround a rotor of a charged foreign matter clearing unmanned aerial vehicle for preventing foreign matters from falling on a vehicle body of the unmanned aerial vehicle and from being wound and collided with the rotor, and the influence on the normal work of the unmanned aerial vehicle is avoided.

The invention provides a concrete admixture and a preparation method thereof. The preparation method comprises the following steps: preparing calcium silicate and magnesium silicate nanoparticles by taking a magnesium nitrate aqueous solution, a sodium silicate aqueous solution, tetraethyl orthosilicate, calcium nitrate and the like as raw materials; modifying the halloysite nanotube by using N-([beta]-aminoethyl-[gamma]-aminopropyl triethoxysilane to obtain a modified halloysite nanotube, and reacting the modified halloysite nanotube with the epoxidized bark powder to obtain modified bark powder; and finally, taking acrylamide and N-(4-aminophenyl)acrylamide as raw materials to carry out polymerization reaction, and adding calcium silicate and magnesium silicate nanoparticles and the modified bark powder in the polymerization process. The concrete admixture is helpful for greatly accelerating early hydration of cement, has a good early strength effect, has a very good adsorption and solidification effect on chloride ions, and prevents concrete from being eroded and damaged by the chloride ions.