266results about How to "Does not affect breathability" patented technology

The invention belongs to the technical field of polymer lithium ion batteries, in particular to a diaphragm for the polymer lithium ion battery. The diaphragm comprises a multihole base material, wherein an inorganic substance coating layer and an organic substance coating layer are coated on at least one surface of the multihole base material; and the organic substance coating layer is in island-type and / or linear distribution and coated on the surface of the multihole base material and / or the inorganic substance coating layer. Compared with the prior art, due to the inorganic substance coating layer, the diaphragm can keep relatively high heat stability and mechanical performance, so that the lithium ion battery has high safety performance; the organic substance coating layer has high imbibition swelling capacity, and an interface has high stability, so that the manufactured lithium ion battery has perfect mechanical performance; due to the distribution characteristic of the organic substance coating layer, spaces are provided for charging and discharging processes of a pole piece and a circulation process; and the problem of deformation of the polymer lithium ion battery is well solved. Furthermore, the invention also discloses a polymer lithium ion batter with the diaphragm.

The invention relates to a preparation method of a functional textile, and belongs to the field of textile surface grafting modification. The method for preparing a super-hydrophobic textile from a thiol-ene click chemistry-modified fiber is characterized by comprising the steps that alkali liquor steaming treatment is performed on a polyester fiber, then mercaptosilane is fixed to the surface of the polyester fiber, finally a methacrylate monomer is grafted to the surface of the polyester through a thiol-ene click chemistry reaction to reduce the surface tension of the fiber, and then the super-hydrophobic polyester textile is obtained. The contact angle between the polyester textile prepared through the method and water drops is larger than 150 degrees, and the polyester textile is stable to acid, alkali, salt and solvent and capable of resisting friction and washing and has the very good hydrophobic stability.

The invention relates to a complex antibacterial fiber, a fabric and a preparation method thereof, in particular to an irradiation grafting coordination group on the surface of the fiber and on the surface of the fabric, the complex antibacterial fiber loading antibacterial components Ag, Cu and Zn and the composition thereof, the fabric and the preparation method thereof. The method improves the mobility of the antibacterial components in a fiber surface liquid film, has favorable sterilization effect and antibacterial effect, is suitable for modification of organic polymer fibers and fabrics of various types and preparation of corresponding broad-spectrum antibacterial fibers and fabrics, does not generate negative influences on the hygroscopicity, the air permeability and the mechanical properties of the fibers and the fabrics, has simple preparation technology, and is convenient to realize industrialization and lower the production cost.

The invention discloses glass fiber air filter paper with high dust holding capacity, which is prepared from alkali-free glass fiber chopped strands and alkali-free glass fiber cotton in the diameter of 0.3-0.4 mu m, as well as an adhesive, wherein the glass fiber air filter paper comprises 3-8 parts by weight of the alkali-free glass fiber chopped strands and 92-97 parts by weight of the alkali-free glass fiber cotton, and the adhesive is a water repellent containing fluorocarbon. The invention further discloses a production process of the glass fiber air filter paper with the high dust holding capacity, and the production process comprises the following steps: firstly beating and dispersing raw material to obtain pulp, then performing wet process forming on the pulp to obtain wet paper, removing water in the wet paper, then performing two-sided sizing on the dehydrated wet paper, and finally drying to obtain a product, wherein the beating degree during beating is 52-56 degrees SR, suction dehydration is performed in three stages, and drying treatment is performed in four stages. The glass fiber air filter paper disclosed by the invention has the advantages of smooth and uniform surface, large specific surface area and dust holding capacity, high mechanical strength and resistance to acid and alkali corrosion.

The invention discloses an organosilicon concrete protective agent and a preparation method. The organosilicon concrete protective agent comprises the main compositions in percent by volume: 50-60% of an alkyl alkoxy silane, 5-10% of terminal-substituted polydimethylsiloxane, 3-5% of an emulsifier, 0.05-1% of a catalyst, 5-10% of a solvent and 20-30% of water. The protective agent is prepared by uniformly mixing the alkyl alkoxy silane, terminal-substituted polydimethylsiloxane and the emulsifier in the organic solvent at room temperature, then adding the catalyst to perform a uniform reaction, then dropwise adding the completely-reacted oil phase system into deionized water, and performing high-speed shearing for obtaining a paste. The preparation method is simple, the coating operation is simple, the cost is low, when the concrete surface is coated with the organosilicon concrete protective agent, a layer of a hydrophobic film is formed along the aperture inner walls of concrete, so that freeze-thaw cycle, chloride ion erosion and the like can be prevented, and the organosilicon concrete protective agent is applicable to facilities such as highways, bridges, tunnels, seaport wharfs, airports and the like, and is applicable to industrialized production.

The invention discloses a polyolefin microporous air-permeable membrane and a preparation method thereof. The microporous air-permeable membrane is prepared from a polyolefin substrate filled with a calcium carbonate filler with processed surface by means of casting extruding, stretching, and heat setting and film-forming. During the preparation, the polyolefin and the calcium carbonate filler with the processed surface are blended, extruded and pelletized, so as to prepare air-permeable particles; the air-permeable particles are extruded and molten by a casting extruder; the melt temperature is kept at 240-255 DEG C; the melt is continuously extruded to form a film through a die lip clearance of a T-shaped die head of a casting machine; the film is subjected to one-step or two-step stretching in a uniaxial manner; the draw ratio is controlled to be 1.5-2.5; the film obtained in the stretching manner is subjected to heat setting treatment at the heat setting temperature of 70-85 DEG C. The polyolefin microporous air-permeable membrane disclosed by the invention can ensure high air permeability and mechanical property of the microporous air-permeable membrane, meanwhile, the processing performance of the product is not affected, and the resistance to high temperature and high pressure of the film is also improved.

The invention discloses a method for preparing an intelligent temperature regulating functional yarn, which has the following steps of charging cementing agent and thickening agent into phase-change microcapsule dispersion to intimately mix and obtain phase-change microcapsule functional finishing agent with viscosity, wherein the content of the cementing agent and the thickening agent are respectively 0.5-5% by weight of the finishing agent, the phase-change microcapsule functional finishing agent is finished on the yarn via a double-nip-double-dip or a sizing process, and then obtaining textiles via weave technology. The selected capsule is water dispersion with good surroundings, wherein the capsule size is about 100nm which is only one-tenth or one-percent of the yarn fineness, thereby being capable of greatly improving dosages of the capsules in the yarns, at the same time holding constant raw mechanical property of the yarn, furthermore, the method has the advantages of convenient and flexible processing, good operability and being basically not influence on hand feeling and breathability of fabrics due to adopting the double dip double nip or the slashing process, and the performance test indicates that the finished textile has obvious heat storage and temperature regulating effects.

The invention provides a novel waterproof air-permeable plastic film which is prepared from the following raw materials in parts by weight: 40-80 parts of high-polymer plastic, 20-60 parts of filler and 1-5 parts of auxiliary material. The high-polymer plastic is selected from at least one of polyethylene, polypropylene, thermoplastic elastomer and the like; the filler is selected from at least one of smectite, bentonite and titanium white; and the auxiliary material is selected from at least one of high-polymer wax, modified poly-terephthaloyl p-phenylenediamine, calcium stearate and the like. Due to the adoption of the plastic film (biaxial or uniaxial) stretching technique, the natural mineral filler with special functions is added to the raw material formula of the waterproof air-permeable plastic film, so that the waterproof function of the air-permeable plastic film is greatly enhanced on the premise of not influencing the air permeability of the material.

The invention relates to the technical field of lithium ion battery diaphragm preparation, and discloses ceramic slurry, a ceramic composite diaphragm and a lithium ion battery. The slurry comprises deionized water, ceramic particles, a thickening agent, a binder, a dispersing agent and a wetting agent, wherein the dispersing agent is an amphiphilic high-molecular compound with a comb structure. The ceramic composite diaphragm prepared from the slurry is high in thermal stability, puncture resistance and liquid absorption capacity, and the ceramic coating is not easy to fall off in an electrolyte when being used in the lithium ion battery, so that the cycling life of the battery can be prolonged, and the consistency of cells and the safety of the battery can be improved.

The invention relates to the technical field of bra cup pad, and specifically relates to a vertical cotton breathable bra cup pad with a silica gel net and a preparation method thereof. The vertical cotton breathable bra cup pad comprises a vertical cotton outer layer and a vertical cotton inner layer; a vertical cotton interlayer is arranged between the vertical cotton outer layer and the vertical cotton inner layer; an adhesive layer is arranged between the vertical cotton interlayer and the vertical cotton inner layer; and a silica gel net layer is arranged between the vertical cotton outer layer and the vertical cotton interlayer. The vertical cotton breathable bra cup pad is prepared by a combined technology of hot pressing and cold pressing. The pad is made of vertical cotton, and is light, comfortable, and breathable. A silica gel layer is arranged between vertical cotton layers, the performance of the pad on resisting water washing is enhanced, the anti-collapse effect is good, three-dimensional effect of the cup pad is long-lasting and stable, and the deformation is difficult to happen.

The invention provides a collagen gel and a preparation method thereof. The collagen gel comprises collagen and an antibacterial agent, wherein the antibacterial agent is at least one of chitosan and nano silver. The collagen gel also comprises a preservative, a substrate, a dispersing agent, a film-forming agent and water; and 1g of gel comprises 0.5 to 8.0mg of collagen, 0.001 to 15mg of antibacterial agent, 1 to 50mg of preservative, 10 to 50mg of matrix, 50 to 100mg of dispersing agent, 1 to 10mg of film-forming agent, and the balance of water. The method for preparing the collagen gel comprises the following steps of: performing dispersion and dissolution on the substrate by adopting the dispersing agent under ten-thousand grade clean environment; adding the dispersing agent, the substrate, the preservative, the antibacterial agent, and collagen solution into a vacuum emulsified homogenizer one by one; after fully mixing, standing and defoaming, filling the product. The collagen gel is applied to various open wounds and infected wounds, lightens hyperpigmentation, has good effect of accelerating wound healing, and can maintain long-term anti-bacteria function.

The invention relates to a core-shell type fluorinated acrylate fabric water repellent which comprises the components by weight percent: 25-50% of monomer, 50-75% of deionized water, an initiator and an emulsifying agent, wherein the weight of the initiator is 0.5-1.5% of the total weight of the monomer, and the weight of the emulsifying agent is 1.0-3.5% of total weight of the monomer. A preparation method of the water repellent comprises the steps of respectively preparing shell emulsion and core emulsion, and then dripping the shell emulsion and the initiator into the core emulsion for reaction to obtain the core-shell type fluorinated acrylate fabric water repellent. The core-shell type fluorinated acrylate fabric water repellent is applied to water and oil repellent finishing of the fabric, so that the fabric has excellent water and oil repellent property, and the problems that the existing water and oil repellent is poor in use durability, low in fastness and the like in the aspect of wearability can be solved; furthermore, the performances such as air permeability, moisture permeability and the like of the fabric are not influenced, and the environmental pollution is not caused.

The invention relates to the technical field of cigarette materials, in particular to a sustained-released-type liquor aroma cigarette core line and a preparation method and application thereof. The preparation method of the sustained-released-type liquor aroma cigarette core line comprises the following steps that (1) alcohol-soluble high polymer materials are dissolved in an alcoholic solution to obtain a skeleton solution; edible wine is dissolved in a wetting agent to obtain blending liquid, and the blending liquid and the skeleton solution are mixed to obtain a liquor aroma solution; (2) short plant fibers are twisted to form the core line; (3) ultrasonic mixing is carried out continuously on the liquor aroma solution obtained in the step (1), and the core line obtained in the step (2) is arranged in the liquor aroma solution obtained after the ultrasonic mixing for ultrasonic dip-coating; (4) air drying is carried out on the core line obtained after the ultrasonic dip-coating in the step (3) at normal temperature to obtain the sustained-released-type liquor aroma cigarette core line. The sustained-released-type liquor aroma cigarette core line is good in sustained-released effect, a consumer can taste the obvious liquor aroma when smoking a cigarette through a filter tip containing the core line, and the unique cigarette aroma style is achieved.

The invention relates to a making method of a fabric, in particular to a making method of a single-face-super-hydrophobic and single-face-hydrophilic Janus-type fabric and belongs to the field of textile function arrangement. The method comprises the following steps that 1, the fabric is cleaned and then dried for use; 2, the single face of the fabric is protected, under the condition of constantoxygen pressure intensity, plasma glow discharge treatment is conducted on the single face of the fabric, after oxygen is switched off, under the condition of constant steam pressure intensity of a grafting monomer, plasma glow discharge treatment is conducted again, and the single-face-super-hydrophobic and single-face-hydrophilic Janus-type fabric is obtained. According to plasma glow dischargetreatment, a cold plasma treatment instrument is used for generating plasma glow, the plasma treatment power is within 30-120 W, and the time is within 1-10 min. According to the method, the technology is simple and easy to control, the method is suitable for single-face treatment of various cotton fabrics and acetate fiber non-woven fabrics, the functionality demand is met, and the method also has good wearing performance.

The invention discloses a preparation method of an agricultural composite water retention agent, which comprises the following steps: (1) performing dust removal on straws of crops, pulverizing, and sieving with a 40-mesh sieve; (2) adding a 30% potassium hydroxide solution into acrylic acid, and neutralizing to prepare a neutralized acrylate solution; (3) proportionally mixing flour and the pretreated straw powder, adding water, pulping, heating, gelatinizing, then cooling, slowly adding the neutralized acrylate solution according to the mass ratio of the flour and straw mixed powder to the acrylic acid before neutralization, mixing, then adding initiator, stirring, then adding a crosslinking agent, performing polymerization reaction to form a mesh-shaped structure, and soaking in salt water to obtain water retention agent pulp; and (4) washing the water retention agent pulp with ethanol, then cutting, drying, and pulverizing to prepare the water retention agent. The product disclosed by the invention has the characteristics of high water absorptivity, high gel strength, biodegradability, low cost and environment friendliness, and is suitable for application in the culture of edible fungi.

The invention provides a manufacturing method of an antibacterial mask and the antibacterial mask manufactured by the method, wherein an antibacterial material is prepared by taking an inorganic nanoantibacterial material as a functional component and respectively mixing chitin or anion powder, then the antibacterial material is added into a film forming agent to prepare an antibacterial coating,the antibacterial coating is coated on non-woven fabric, and the mask is prepared from the dried antibacterial non-woven fabric with an antibacterial function, thereby realizing uniform distributionof the granular inorganic nano antibacterial material and chitin / anion powder on a base material of the mask, so that the mask has the antibacterial function. The antibacterial mask disclosed by theinvention realizes an antibacterial effect, the breathable effect of the non-woven fabric mask is not affected after the water-based film forming agent is dried, and the problem that the existing maskhas no antibacterial function is solved.

The invention provides a 3D-printing wound dressing material based on silk microsphere bio-ink and a preparation method thereof. The preparation method includes the following steps: transferring silkmicrosphere bio-ink, which includes silk protein microspheres coating aspirin, silk protein water solution, ultraviolet initiator and polyvinyl alcohol ester, into a syringe of a 3D-printing machine;with a cotton gauze as a base printing cloth, printing the surface of the cotton gauze with the silk microsphere bio-ink according to a periodically circulated cross-network structure model; and rapidly curing and shaping the 3D-printing wound dressing material under ultraviolet irradiation. The product is based on 3D-printing technology, wherein the formed cross-network structure contains regularly arranged silk microspheres, and the silk microsphere bio-ink coating layer cures on the surface of the cotton gauze and does not completely penetrate through the cotton gauze. The 3D-printing wounddressing material has good mechanical performance and biocompatibility and excellent slow-release performance, can protect a wound for a long time and can accelerate healing of the wounding.

The invention relates to an earth spray-seeding greening base material and a slope ecological protection construction method. The earth spray-seeding greening base material comprises a base layer matrix, an intermediate layer matrix and a surface layer matrix, and is characterized in that the base layer matrix comprises the following raw materials in parts by weight: 380 parts of planting soil, 210 parts of organic fibers, 70 parts of organic matters, 20 parts of a fertilizer, 95 parts of an adhesive, 22 parts of a water-retaining agent and 30 parts of a soil conditioner; the intermediate layer matrix comprises the following raw materials in parts by weight: 450 parts of planting soil, 200 parts of organic fibers, 300 parts of organic matters, 20 parts of a fertilizer, 40 parts of an adhesive, 32 parts of a water-retaining agent, 13 parts of a soil conditioner, 2 parts of a rooting agent, 2 parts of fenaminosulf and plant seeds; the surface layer matrix does not contain plant seeds, and the rest is the same as the intermediate layer matrix. On the premise that the air permeability of the base material is not affected, the bonding effect and the bonding stability are improved, and the occurrence time of soil erosion such as loosening and falling of the base material due to poor bonding effect is prolonged.

The invention discloses an aroma improvement method for filter stick forming paper. The method comprises the following steps of: (1) mixing the Yunnan K326 planted in Yunnan and Yunnan Honghuadajinyuan tobacco leaves in a proportion of 1:(1-3), crushing or shredding to obtain a fragrance source, and performing normal-temperature extraction for 48 hours by use of 95-98% of ethanol solution to obtain fragrance extract; (2) performing pressure-reduced distillation of the filtrate under the conditions that the vacuum degree is 0.02-0.08MPa and the temperature is 60-85 DEG C, and separating to obtain an aromatic substance with a boiling point of 150-260 DEG C at normal pressure; and (3) coating the aromatic substance on the forming paper in a manner that the aromatic substance accounts for 0.5-4.0% of the mass of the dry forming paper. In the invention, the tobacco aromatic substance is added, and miscellaneous gas is not led in during cigarette suction so as to achieve the aims of increasing the cigarette aroma, regulating the cigarette flavor, improving the comfort and promoting the cigarette suction quality. By selecting proper fragrance and an extraction method and combining a coating method with a drying method, the invention develops a method capable of obviously increasing the aroma and effectively improving the cigarette suction quality without influencing the performance of the filter stick forming paper.

The invention discloses a hydrophobic outer wall heat-preservation anti-cracking mortar and a method for making the same. The mortar takes cement and fine sand as base materials, and is formed through adding in hydrophobic active chemical substances, i.e. a water retention agent and corresponding agglomerant, an expansion agent and fiber; the waterproof function of the mortar is that the hydrophobic active chemical substances can be absorbed on the inner surface of the pore of cement mortar so as to form a hydrophobic surface film, thereby preventing outside moisture from infiltrating into the mortar and reaching the action of water proofing and leakage resistance. The hydrophobic outer wall heat-preservation anti-cracking mortar has the advantages of water proofing, cracking prevention, leakage resistance, heat preservation, heat insulation, excellent bonding property, high strength, low degree of shrinkage, low coefficient of thermal conductivity, ideal workability and application property and low fold ratio, and is a novel heat-preservation heat-insulation material. The heat-preservation heat-insulation building built by the mortar is not cold in winter and not hot in summer indoors, thereby greatly improving dwelling environment and saving energy resources; moreover, all indexes and particularly the hydrophobic index of the mortar are up to advanced domestic level, and have remarkable social benefit and economic benefit.

The invention discloses a method for in-situ generation of a nano-flower-shaped manganese dioxide catalyst on a filter material. The method comprises the following steps: soaking the filter material into a solution of lauryl sodium sulfate and nitric acid, and firstly, performing surface modification on the filter material by using the lauryl sodium sulfate so as to wind a charge layer on the surface of the filter material, wherein h<+> in the acid solution can be tightly adsorbed by the charge layer; adding potassium permanganate as an oxidant, enabling the potassium permanganate to react with H<+> on the surface of the filter material, and performing in-situ generation of nano-flower-shaped manganese dioxide on the surface of the filter material to prepare a composite filter material with a denitration function. As the filter surface of the filter material is uniformly wrapped by a layer of nano-flower-shaped manganese dioxide, and compared with common manganese dioxide, the manganese dioxide of the morphology is relatively large in specific surface area, relatively large in pore volume and relatively beneficial to expansion of a reaction gas, so that the catalytic filter material is very excellent in low-temperature activity, and the conversion rate can be 97% or above at 160 DEG C.

The invention discloses a method for preparing a honey fragrance cigarette incense thread by means of litchi nectar. The method comprises the steps of 1, dissolving a wetting agent in deionized water completely to obtain prepad fluid; 2, dissolving the litchi nectar in the prepad fluid completely to obtain honey fragrance fluid; 3, taking plant short fiber and twisting the plant short fiber into an incense thread; 4, placing the incense thread in the honey fragrance fluid for dip-coating while the honey fragrance fluid is stirred; 5, placing the dip-coated incense thread at normal temperature to be dried in the air to obtain the honey fragrance cigarette incense thread. After the honey fragrance cigarette incense thread is applied to a cigarette filter tip, the moistening feel of cigarettes can be improved remarkably, the pungent dry feeling of cigarettes can be relieved in smoking, the comfort level is increased when people smoke cigarettes, and the sensory feeling of smokers is improved.

The invention relates to the field of disposable sanitary articles, in particular to a manufacturing process of a pull-up diaper. The process includes the following steps that 1, an absorption core ismade; 2, a first non-woven fabric is compounded with a liquid-tight film to form a bottom material, and a waist rubber band is bonded onto the bottom material; 3, the absorption core is compounded with the bottom material; 4, a second non-woven fabric is bonded with three-dimensional protective edges, protective edge rubber bands and plane rubber bands to form a surface layer material; the surface layer material is compounded on the compound formed by the absorption core and the bottom material; 5, longitudinal folding is conducted, and the front and rear pieces of the pull-up diaper are formed; 6, the front and rear pieces are unfolded, and the distance between the front and rear pieces of a semi-finished product of the pull-up diaper is increased, and the front and rear pieces are subjected to roll-in conveying at the same time; 7, the front and rear pieces of the pull-up diaper are connected and cut off to form the pull-up diaper. The process solves the technical problem that finished product of the pull-up diaper has wrinkles.

The invention provides a preparation method of regenerated silk protein fiber based on rare-earth / metal ions. The preparation method comprises the following steps: after silk is degummed, putting the degummed silk in a ternary solution containing CaCl2, C2H5O and H2O, heating and stirring for dissolving, dialyzing, and concentrating to obtain an aqueous silk-protein solution; dissolving chloroauric acid in deionized water, adding rare-earth chloride, stirring, then adding the aqueous silk-protein solution, then adding a glutaraldehyde cross-linking agent, stirring at constant temperature, and standing to obtain a spinning solution; carrying out electrostatic spinning on the spinning solution under room temperature to form as-spun fiber, then putting the as-spun fiber into sodium citrate vapor for treatment, taking out, and drying to obtain the regenerated silk protein fiber based on the rare-earth / metal ions. The regenerated silk protein fiber prepared by the invention has the advantages of good strength and flexibility, bright and white color and excellent appearance as well as the functions of antibiosis and ultraviolet resistance and the like.

The invention discloses initiative broad-spectrum lasting antibacterial and antiviral medical protective clothing, textile fabric and a preparation method thereof. The preparation method of the textile fabric includes the steps that nano-silver colloidal sol, an inorganic antibacterial agent and an organic antibacterial agent are matched into colloidal sol mixed liquor of a certain concentration;non-woven materials are dipped into the colloidal sol mixed liquor for a certain time; and the antibacterial and antiviral textile fabric can be obtained by means of drying, flattening and winding. The initiative broad-spectrum lasting antibacterial and antiviral medical protective clothing is made of the textile fabric prepared through the method. A traditional metal ion antibacterial and antiviral technology, an organic matter antibacterial and antiviral technology and a photocatalyst antibacterial technology are combined, the lasting and effective broad-spectrum antibacterial and antiviralproperties are given to the medical protective clothing while breathability is not influenced, and the antibacterial rate reaches 99% or above; and moreover, the fast killing effect on influenza viruses (H1N1 and H3N2) is good, the antiviral activity rate reaches 99% or above, and washing reutilization can be achieved.

Aiming at the problem that hydrophilicity and thermal stability of a polypropylene lithium-ion battery separator are poor, the invention provides a method for layer-by-layer self-assembly of polyelectrolyte on the surface of a separator so as to improve the hydrophilicity and thermal stability of the polypropylene lithium-ion battery separator. According to the technical scheme, an aqueous solution polymerization method is adopted for respectively preparing anion polyelectrolyte containing an anion structural unit and cation polyelectrolyte containing a cation structural unit, and a pretreated polypropylene separator is repeatedly and alternately soaked in two polyelectrolyte solutions, so that macromolecule polyelectrolyte is self assembled onto the surface of the polypropylene separator under the action of an electrostatic force; the polypropylene lithium-ion battery separator prepared by adopting the method provided by the invention has high hydrophilicity and thermal stability, a static water contact angle is as low as 30 degrees; after the polypropylene lithium-ion battery separator is treated for 4 hours at the temperature of 130 DEG C, thermal shrinkage of the polypropylene lithium-ion battery separator is about 15% only; the method is easy to operate and strong in practicability, the defects of chemical modification and a general coating method are overcome, and the method disclosed by the invention can be put into industrial production.

The invention discloses a three-dimensional nanocomposite adhesive bandage as well as a preparation method and a use method thereof. The three-dimensional wound-protection layer of the adhesive bandage has a curved surface, and the curved surface is complementary to the uneven wound surface and comprises a nanobacterial cellulose frozen-dried membrane and an eletrospun chitosan-containing nanofiber film. The three-dimensional wound-protection layer can carry a part of liquid medicine. When in use, the adhesive bandage fully fits the wound surface, has air permeability, can keep the wound surface wet, has the functions of stop bleeding, inhibiting bacteria, promoting the healing of a wound and preventing the adhesion of the wound surface to the wound dressing and can be used widely. The adhesive bandage can well fit the concave wound surface and the convex wound surface, is applicable to the wet wound surface with many exudates, the dry wound surface which needs to be wetted by the wound dressing and the potential wound surface which needs protection, thereby being an ideal wound dressing.

The invention relates to a safety belt-type bag and a weaving method thereof. The external bag body is mainly weaved from at least one longitude belt and one latitude belt. The whole fixed longitude belts present a ring structure, with the two ends respectively arranged at the edges of the external upper part of the internal bag body; and the latitude belts are respectively arranged at the inside parts or the surfaces of the longitude belts. The weaving method includes the following steps: cutting a plurality of longitude belts and latitude belts out into suitable length, arranging the longitude belts in order, and arranging the latitude belts on the bottoms and the surfaces of the longitude belts in order from top to bottom through interpenetration or superposition so as to form a desirable shape. The weaving method is simple and practical, not only avoids the problem that the splicing joints and the stitched parts are easy to break and craze, but also improves the overall tensile-strength of the bag, thus improving the overall fastness and the durability of the bag.

The invention discloses a degradable composite water-preserving agent for greenhouse planting. The degradable composite water-preserving agent is prepared from the following raw materials in parts by weight: 50 to 55 parts of crop straws, 40 to 55 parts of urea, 18 to 20 parts of ammonium dihydrogen phosphate, 22 to 25 parts of potassium persulfate, 10 to 15 parts of potassium sulfate, 16 to 18 parts of potassium chloride, 24 to 36 parts of acrylic acid, 50 to 80 parts of carboxymethyl cellulose, 6 to 10 parts of N,N-methylene bisacrylamide, 9 to 12 parts of polyvinyl alcohol, 30 to 50 parts of humic acid and 70 to 100 parts of acrylamide. The water-preserving agent disclosed by the invention has an excellent water regulating and controlling function; the degradable composite water-preserving agent can continuously supply water for a greenhouse to plant and grow; after the water-preserving agent absorbs water, the water-preserving agent becomes irregular gel particles; after the water-preserving agent is blended with dry material, the air permeability, the water permeability and the structural stability of a culture material are not affected; the problem that water replenishment is difficult at the later stage of greenhouse planting is solved; the water-preserving capability of the culture material is improved, and the yield of greenhouse planting is increased; meanwhile, the water-preserving agent disclosed by the invention has degradability, no pollution to the environment and better popularization value.