99 results about "Adipic Dihydrazide" patented technology

The invention relates to a preparation method of a polyurethane-based flexible phase-change material and a battery heat management device. Polyethylene glycol is used as a phase-change material, and adipic dihydrazide (ADH) and 4, 4 '-diphenyltetracarboxylic dianhydride (ADH) are integrated at a condensation end of a heat pipe; at least one of 4, 4 '-diaminobenzanilide (DABA) is used as a cross-linking agent, and at least one of HMDI or IPDI is used as a chain extender to prepare the polyurethane-based flexible phase change material with enthalpy value, flexible rigidity and appropriate phase change temperature. The material not only has excellent mechanical strength and thermal stability, but also has healing property, recoverability and shape memory function. The polyurethane-based flexible phase change material serves as an energy storage film and forms a sealing structure with the condensation end through mechanical pressing. When the temperature rises, the energy storage film B1 absorbs heat and expands, the contact area with the outside is increased, the heat dissipation power is improved, and the heat dissipation efficiency and the heat load management capacity are remarkably improved by maximizing the heat transfer area and utilizing the high latent heat characteristic.

The invention relates to the technical field of waterproof materials, and particularly discloses a high-elasticity waterproof emulsion and a preparation method thereof. The invention discloses a high-elasticity waterproof emulsion. The water-based paint is prepared from the following raw materials in parts by mass: 40 to 60 parts of modified acrylic resin emulsion, 25 to 40 parts of waterborne polyurethane, 3 to 6 parts of hydroxyethyl methylacrylate, 0.5 to 1 part of mercaptopropionic acid, 6 to 8 parts of fluorinated mica sheet, 3 to 6 parts of organic silicon emulsion, 2 to 4 parts of fluorocarbon surfactant, 0.8 to 1.5 parts of adipic dihydrazide, 0.3 to 0.8 part of dynamic cross-linking agent, 3 to 8 parts of compatilizer, 0.5 to 1 part of antioxidant, 0.5 to 1 part of anti-aging agent, 0.5 to 1.5 parts of defoaming agent and 40 to 55 parts of solvent. The modified acrylic resin emulsion is prepared from a monomer comprising diacetone acrylamide. The high-elasticity waterproof emulsion prepared by the invention has relatively good elasticity, waterproof performance and aging resistance.

The invention relates to the technical field of sewage treatment, in particular to a preparation method of a degradable bactericide for an oil field. According to the invention, a hydroxypropyl guanidine gum-polycaprolactone-ethylenediamine fragment copolymer is taken as a carrier, a methylisothiazolinone quaternary ammonium salt (Q-MIT) bactericide is loaded, and the degradable bactericide for the oil field is obtained by cooperating with a dodecyl ethyl sulfide (TC-SE) bactericide and combining with sodium polyaspartate. A carrier forms a hydrogen bond with a polar group on the surface of a biological membrane through a hydroxypropyl guanidine gum main chain to realize targeted anchoring, a polycaprolactone branched chain encapsulates Q-MIT through a hydrophobic effect, primary amino groups of ethylenediamine are introduced to form a pH sensitive Schiff base bond with Q-MIT, and the primary amino groups and adipic dihydrazide form a thermal response hydrazide bond to construct a dual dynamic covalent bond, so that controlled release of Q-MIT is realized, and the biomembrane is prepared. And moreover, the components of the whole system are connected through degradable chemical bonds, so that the environmental protection property and sustainability of oil field operation are guaranteed.

The invention belongs to the technical field of self-repairing coatings, and particularly relates to an online patterned photocuring self-repairing vehicle cover film and a preparation method thereof. The invention discloses an online patterning photocuring self-repairing vehicle cover film which comprises a UV curing layer and a base material layer, and the UV curing layer comprises polyurethane containing double dynamic bonds; the polyurethane containing the double dynamic bonds is obtained by carrying out a chain extension reaction on a prepolymer by using a chain extender and carrying out a cross-linking reaction by using a cross-linking agent, the chain extender is prepared from diacetone acrylamide and bis (beta-ethoxyl) disulfide; the cross-linking agent comprises adipic acid dihydrazide. The structure of the polyurethane containing the double dynamic bonds comprises an acylhydrazone bond and a disulfide bond; the prepolymer is obtained by carrying out prepolymerization reaction on polyether glycol and isophorone diisocyanate. The double dynamic bonds play a supramolecular synergistic effect: the acylhydrazone bond provides pH responsive repair, the disulfide bond is rapidly recombined through thermal triggering, and the acylhydrazone bond and the disulfide bond cooperate to realize multi-mode repair.

The invention discloses a preparation method of a straw biomass-based water-retaining agent, and belongs to the technical field of water-retaining agent preparation, crushed straw is used as a raw material and is sequentially treated by sodium hydroxide, hydrogen peroxide and dimethylformamide to obtain a three-stage product with multiple grafting reaction sites, the combination of straw powder and sodium carboxymethyl cellulose is promoted, and the straw biomass-based water-retaining agent is prepared. The water-retaining agent with a stable structure is further prepared; in addition, solid salicylic acid powder is added after the third-stage product is subjected to high-temperature and high-pressure treatment, so that the solid salicylic acid powder enters the expanded straw powder, then the solid salicylic acid powder is heated and decomposed through high-temperature treatment, and part of the decomposed product is moved out in the form of gas to form holes; the residual product is combined with subsequently added adipic acid dihydrazide to generate a molecular chain with good stretching and overturning properties, so that the water absorption expansion performance of the prepared water-retaining agent is further improved, salicylic acid is decomposed to form a porous structure, the water storage performance of the water-retaining agent is further improved, and the water-retaining agent prepared by adopting the method is good in comprehensive performance and can be widely applied to the field of water retaining agents. Good application prospects are realized.

The invention discloses long-acting high-dynamic hydrazone bond hydrogel as well as a preparation method and application thereof, and particularly relates to the technical field of biomedical materials. The preparation method comprises the following steps: taking 1-adamantane acetic acid and adipic dihydrazide modified sodium hyaluronate and benzaldehyde-terminated eight-arm polyethylene glycol as carrier raw materials; the hydrazone bond hydrogel with relatively high stability is prepared through a coupling reaction of an aldehyde group of benzaldehyde-terminated eight-arm polyethylene glycol and a hydrazide group of 1-adamantane acetic acid and adipic dihydrazide modified sodium hyaluronate. The beta-cyclodextrin modified m-phenylenediamine catalyst is dynamically combined into the carrier through reversible host-guest complexation between beta-cyclodextrin and 1-adamantane acetic acid, so that the long-acting high-dynamic hydrazone bond hydrogel is obtained, and the requirement of three-dimensional culture of stem cells on mechanical properties can be met; and network dynamics can be maintained for a long time, so that stem cell spreading is supported, mechanical signal transduction is activated, osteogenesis-related gene expression is promoted, and stem cell osteogenesis differentiation capability is enhanced.

The invention provides a composition for changing plasticity of bone meal particles as well as a preparation method and application of the composition, and relates to the technical field of biomedical materials. The composition is prepared from the following raw material components: bioactive glass, dihydrazide modified sodium hyaluronate, sodium hyaluronate with the molecular weight of 50kDa to 500kDa, a polylactic acid-glycolic acid copolymer and carboxymethyl cellulose. The preparation method of the dihydrazide modified sodium hyaluronate comprises the following steps: carrying out carboxyl activation on sodium hyaluronate, carrying out a cross-linking reaction on the activated hyaluronic acid and adipic dihydrazide, and then terminating the reaction. The composition provided by the invention not only can provide support, but also can adjust the degradation rate to be matched with the bone regeneration period, and all the components synergistically improve the mechanical property and the viscoelastic property. The composition disclosed by the invention can be formed in situ at a bone defect part, provides a space for growth and proliferation of bone cells, improves the biological activity and osteoinductivity of an artificial bone, and promotes bone growth and repair.

Provided are a primer composition that provides a secondary battery exterior material that has excellent electrolyte resistance and does not lose adhesive strength even in a high-temperature environment, a coating film obtained from the primer composition, a secondary battery exterior material including the coating film, and a secondary battery. [Solution] A primer composition comprising: 100 parts by mass of an acid-modified polypropylene resin aqueous dispersion (A); 0.5 to 3.0 parts by mass of a modified polyvinyl alcohol (B) having a carbonyl group; 1.0 to 5.0 parts by mass of adipic acid dihydrazide (C); 5.0 to 10.0 parts by mass of an oxazoline compound (D); and water, wherein the aqueous dispersion (A) has a melting point of 143 to 148°C as measured in accordance with JIS K 7121 in a nitrogen gas flow at a temperature rise rate of 10°C / min, and an acid value of 20 to 30 mgKOH / g as measured in accordance with JIS K 2501; and the modified polyvinyl alcohol (B) has a degree of saponification of 98 to 99 mol% as measured in accordance with JIS K 6726.

The invention relates to the technical field of high polymer materials, in particular to an acrylate pressure-sensitive adhesive as well as a preparation method and application thereof. The water-based acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 60 to 85 parts of soft monomer, 10 to 30 parts of hard monomer, 3 to 8 parts of functional monomer, 0.5 to 3 parts of cross-linking monomer, 1 to 4 parts of reactive emulsifier, 0.2 to 0.8 part of initiator, 0.5 to 2 parts of first cross-linking agent (adipic dihydrazide), 0.5 to 2.5 parts of second cross-linking agent (polyvalent metal ion cross-linking agent) and 90 to 120 parts of water, the functional monomer comprises a strong polar monomer containing carboxyl and / or sulfonic acid group; by introducing the strong polar monomer, adipic acid dihydrazide and the multivalent metal ion cross-linking agent, a'covalent-ionic 'double-cross-linked network is constructed, so that the prepared pressure-sensitive adhesive has low sensitization, high cohesion, excellent skin grease pollution resistance and repeated adhesion.

The present disclosure provides an environmentally friendly aqueous coating composition comprising an aqueous emulsion prepared by emulsion polymerizing at least one radically polymerizable monomer and one or more bifunctional or higher functional chain extending monomers in the presence of an aqueous solution of oligomers, the oligomer is made from a mixture of radically polymerizable monomers comprising an acid functional radically polymerizable comonomer, an adhesion promoting radically polymerizable comonomer, and other radically polymerizable comonomers. The aqueous emulsion is substantially free of adipic dihydrazide, has a minimum film forming temperature of < = 55 DEG C, and has a Koenig hardness when dried of at least 40 seconds.

The application discloses a rain night type road marking paint. The road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 50-80 parts, polyvinylpyrrolidone 30-50 parts, curing agent 8-15 parts, wear-resistant agent 5-8 parts, glass microbead 30-50 parts, potassium feldspar powder 10-20 parts, antioxidant 3-5 parts, dispersing agent 3-6 parts, anti-sedimentation agent 3-5 parts, drying catalyst 1-3 parts, and toughening agent 2-5 parts. The road marking paint prepared by the application has good reflection performance in rain night and daytime; the combination use of the glass microbead and the potassium feldspar powder improves the retroreflective coefficient of the material; the combination use of the adipic dihydrazide and 3,3',4,4'-benzophenonetetracarboxylic dianhydride reduces the drying time; and the combination use of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whisker improves the wear resistance of the material.

The application discloses a high-elongation-strength anti-fatigue TPU blended material and a preparation method thereof, and relates to the field of polymer materials. In the preparation of the high-elongation-strength anti-fatigue TPU blended material, phosphorus chloride is reacted with 4'-vinyl-[1,1'-biphenyl]-4-alcohol and p-phenylphenol to obtain a phosphite antioxidant; nano-silicon dioxide is sequentially reacted with trimethoxysilane and the phosphite antioxidant to obtain modified silicon dioxide; a modified polyurethane elastomer is prepared by reacting hydroxyl-terminated polysiloxane, 1,4-butanediol, isophorone diisocyanate and adipic dihydrazide; polyether amide elastomer and the modified polyurethane elastomer are mixed, mixed with a compatilizer, modified silicon dioxide and antioxidant 1010, dried, mechanically mixed, and melt-blended to obtain the high-elongation-strength anti-fatigue TPU blended material. The high-elongation-strength anti-fatigue TPU blended material prepared by the application has the abilities of self-repairing, durability and flame resistance.

The invention discloses a polyglutamic acid hemostatic hydrogel and a preparation method thereof. The polyglutamic acid hemostatic hydrogel comprises a phthalic dialdehyde grafted polyglutamic acid derivative and an adipic dihydrazide grafted polyglutamic acid derivative, the o-phthalaldehyde grafted polyglutamic acid derivative has a structure as shown in a formula 1 or a formula 3; the adipic dihydrazide grafted polyglutamic acid derivative has a structure as shown in a formula 2 or a formula 4. The polyglutamic acid hemostatic hydrogel provided by the invention comprises two components, i.e., a phthalic dialdehyde grafted polyglutamic acid derivative and an adipic dihydrazide grafted polyglutamic acid derivative, and polyglutamic acid is a biodegradable high polymer material with good biocompatibility; the hydrogel can realize rapid gelation through rapid reversible cross-linking of o-phthalaldehyde and hydrazino and hydrogen-bond interaction of a main chain of polyglutamic acid, and has excellent mechanical properties and adhesion strength.

This invention discloses a low-reflectivity ink and its preparation method, belonging to the field of printing ink technology. The low-reflectivity ink of this invention effectively solves the problem of existing inks' difficulty in simultaneously achieving low reflectivity, high adhesion, and high light-blocking performance by selecting polyester resin, adipic acid dihydrazide modifier, and molybdenum nitride-carbon black composite filler. The polyester resin, as the base resin, has good film-forming properties and compatibility; its active groups can undergo cross-linking reactions with adipic acid dihydrazide, improving the density and adhesion of the film layer. The nano-sized carbon black in the composite filler has excellent light absorption properties, effectively reducing ink reflectivity. Micron-sized molybdenum nitride, as the framework particle, enhances the mechanical strength and scratch resistance of the film layer, forming a complementary light-absorbing structure with the nano-sized carbon black, further improving light-blocking and mechanical properties, while also improving the ink's lightfastness and preventing coating deterioration after long-term use.

This invention belongs to the technical field of adipic acid dihydrazide production equipment, specifically a crystallization, separation, and drying device for adipic acid dihydrazide. It includes a base, a support fixedly connected to the left side of the top of the base, a drying mechanism fixedly connected to the right side of the top of the base, a stirring tank fixedly connected to the inner side of the support, a stirring mechanism fixedly connected to the top of the stirring tank, and a crystallization cylinder fixedly connected to the lower part of the stirring tank. During crystallization, the stirring motor is activated, causing the rotating shaft to drive the spiral blades to slowly rotate clockwise, scraping away the crystals on the inner wall of the cylinder. This prevents the crystals from agglomerating into large clumps, ensuring more uniform crystal particles. Furthermore, the absence of crystals adhering to the inner wall of the cylinder improves heat exchange efficiency, accelerates the crystallization speed, and ensures that adipic acid dihydrazide can fully crystallize.

The invention belongs to the technical field of emulsion polymerization, and particularly discloses super-water-resistant cationic latex and a preparation method thereof. The invention discloses super water-resistant cationic latex. Comprising the following raw materials: deionized water, a hydrochloric acid solution, an emulsifier QT-03, an N-tallow trimethylene diamine quick-cracking emulsifier, a dimethyl diallyl ammonium chloride solution, a methacryloyloxyethyl trimethyl ammonium chloride solution, styrene, methyl methacrylate, butyl acrylate, diacetone acrylamide, azobis (isobutylamidine hydrochloride) and a defoaming agent. And adipic acid dihydrazide. According to the invention, a diacetone acrylamide-oxalic acid dihydrazide DAAM-ADH ketone hydrazine crosslinking system is utilized, and an oleamide QT-03 emulsifier is adopted, so that the green and environment-friendly room-temperature self-crosslinking type super-water-resistant cationic latex is synthesized.

The invention discloses an antibacterial wear-resistant composite nylon yarn and a preparation process thereof, and relates to the technical field of textile materials. The invention discloses an antibacterial wear-resistant composite nylon yarn. The nylon 66 composite material is prepared from the following raw materials in parts by weight: 45 to 65 parts of nylon 66 slices, 2 to 5 parts of nano silicon carbide, 3 to 7 parts of nano zinc oxide, 4 to 8 parts of micron-sized zirconium dioxide, 6 to 10 parts of modified sepiolite fiber, 5 to 9 parts of polyvinyl butyral, 7 to 12 parts of butyl acrylate-styrene copolymer, 4 to 8 parts of polyethersulfone, 1 to 3 parts of hexadecyl trimethyl ammonium bromide and 0.5 to 2 parts of hindered amine light stabilizer 944. The self-repairing coating is prepared from the following components in parts by weight: 0.3 to 1 part of dicumyl peroxide, 2 to 4 parts of adipic dihydrazide, 3 to 6 parts of nanoscale anatase type titanium dioxide, 5 to 10 parts of self-repairing microcapsules and 8 to 15 parts of modified cellulose nanowhiskers. According to the invention, various functional raw materials are cooperated, so that the nylon yarn has antibacterial and wear-resistant properties and the like. The performance of the raw materials is improved through the modified cellulose nanowhiskers and the sepiolite fibers. And the product quality and performance are ensured through accurate technological parameters, the requirement for high-performance materials is met, and the application prospect is achieved.

The invention relates to the technical field of water-based paint, in particular to a preparation method for double-modified acrylate emulsion through adipic acid dihydrazide and E-44 epoxy resin and application of the emulsion in paint, and is characterized in that firstly, the E-44 epoxy resin is used for modifying the acrylate emulsion; e-44 epoxy resin modified acrylate emulsion is obtained, on the basis, adipic acid dihydrazide and diacetone acrylamide serving as curing agents are introduced into a synthesis system, and multiple crosslinking occurs in the emulsion curing process. The problems of low hardness, poor adhesive force, weak water resistance, low glass transition temperature and the like of a traditional waterborne acrylate emulsion can be solved, on the premise of avoiding high-epoxy-content implosion, the crosslinking density can be remarkably improved, environmental protection and performance balance are achieved, and therefore the requirements of metal protection / building coatings for high hardness and high weather resistance are met.

The application discloses a preparation method of a high-dissipation boron-containing thermoplastic silicon elastomer with a wide temperature range, and the preparation of the material comprises the following raw materials: polyurea prepolymer 40-80 parts, liquid short-chain polyether amine 10-40 parts and photoinitiator TPO 0.1-5 parts. The multiple hydrogen bonds and side chain hydroxyl groups are introduced by chain extension of 1,3-diamino-2-propanol through adipic acid dihydrazide, and the wide-range adjustable mechanical properties are realized by synergistic control, the interlayer adhesion and isotropy are improved, the printed parts have recyclability, and the method is suitable for photocuring 3D printing forming of high-performance elastomer and plastic parts.

The invention belongs to the field of adhesive tape preparation, and relates to a preparation method of a wear-resistant cloth adhesive tape, which comprises the following steps: carrying out nuclear layer polymerization reaction on ethylene and vinyl acetate under the action of an initiator; the preparation method comprises the following steps: carrying out shell polymerization reaction on ethylene and butyl acrylate as well as diacetone acrylamide and vinyl acetate under the action of an initiator, and adding a chain transfer agent and adipic dihydrazide to obtain an ethylene-vinyl acetate copolymer core-shell emulsion; nano aluminum oxide is modified by a silane coupling agent and polyethylene glycol in an ethanol aqueous solution to obtain modified nano aluminum oxide, and the modified nano aluminum oxide is blended with a graphene / silver nanoparticle compound, nano zinc oxide, nano silicon dioxide and a polyester plasticizer to obtain the multifunctional after-finishing agent. After the cotton / polyester blended fabric is pretreated, the cotton / polyester blended fabric is coated with the ethylene-vinyl acetate copolymer core-shell emulsion, the aramid fiber non-woven fabric is attached to the cotton / polyester blended fabric, the aramid fiber non-woven fabric is subjected to compression roller compounding and drying, then the multifunctional after-finishing agent is coated for micro-imprinting, and the wear-resistant cloth adhesive tape is obtained through after-treatment, so that the wear-resistant service life of the adhesive tape is remarkably prolonged.

This invention relates to the field of polymer fine chemical materials and the synthesis technology of special functional waterborne coatings, specifically to an aldehyde-capturing self-healing waterborne coating and its preparation method. The invention discloses an aldehyde-capturing self-healing waterborne coating and its preparation method. This coating uses a side-chain carboxylated ketone-containing waterborne polyurethane-acrylate composite emulsion as the core film-forming material, forming dynamic hydrazone crosslinks with adipic acid dihydrazide, and introducing an epoxy-amine permanent crosslinking network. The side-chain carboxyl groups are derived from maleic anhydride grafted and undergo ring-opening transformation upon contact with water, and are covalently fixed to the polymer side chains, preventing the migration of small molecule acids and ensuring coating storage stability. After the coating cures, environmental moisture triggers the dissociation of side-chain carboxyl groups, releasing protons and catalyzing the dynamic exchange of hydrazone bonds, achieving room-temperature self-healing. Excess hydrazone groups in the coating capture aldehyde pollutants, and the newly generated hydrazone bonds introduce polar groups and crosslinking sites, enhancing network stability.

The invention discloses a rapid curing powder coating special for thin-wall pipe fitting roll coating and a preparation method of the rapid curing powder coating, relates to the technical field of metal pipe fitting coating, and aims to solve the problem that the powder coating is difficult to realize uniform coating on a thin-wall base material in consideration of coating performance and pipe fitting structure stability. The invention relates to an epoxy resin paint, which is composed of 500 g of epoxy resin, 100 g of curing agent, 25 g of auxiliary agent, 18 g of pigment, 3 g of rapid curing agent and 354 g of filler, the epoxy resin is bisphenol A epoxy resin, the softening point is 80-120 DEG C, and the epoxy equivalent is 700-900 g / eq; the curing agent is a mixture of adipic dihydrazide and m-xylylenediamine; the auxiliary agent is a mixture of a modified silicone flatting agent, fumed silica and polyethylene wax micro powder; the pigment is one or a mixture of more of titanium dioxide, carbon black, iron oxide red and ultramarine. The method has the advantage of meeting the coating requirement of the precise pipe fitting.

The invention discloses yellowing-resistant water-based surface printing ink and a preparation method thereof, and relates to the technical field of ink, the yellowing-resistant water-based surface printing ink comprises 40-60 parts of a core-shell structure emulsion, 1-3 parts of a dispersant, 15-25 parts of rutile titanium dioxide, 0.3-1 part of an ultraviolet light absorber, and 15-30 parts of a solvent; wherein the core-shell structure emulsion has a structure taking waterborne polyurethane as a core layer and a modified acrylic monomer as a shell layer. The acrylic monomer is modified by a silane coupling agent, and a hydrophobic siloxane group is introduced, so that the hydrophilicity of a shell layer is reduced, and the shell layer is better matched with a hydrophobic interface of a WPU core layer. Adipic dihydrazide (ADH) is added in a shell layer polymerization stage, and is subjected to a cross-linking reaction with carboxyl in acrylate to form a covalent bond network, so that a core-shell interface is further stabilized, the problem that water-based polyurethane (WPU) and acrylic resin are easy to layer when being mixed can be effectively solved, and meanwhile, the water resistance and yellowing resistance of the ink are improved.

The present invention provides a primer composition that provides an exterior material for secondary batteries that does not experience a decrease in adhesive strength even in high-temperature environments and has excellent electrolyte resistance, a coating film obtained therefrom, an exterior material for secondary batteries containing the coating film, and a secondary battery. [Solution] A primer composition comprising: 100 parts by mass of an acid-modified polypropylene resin aqueous dispersion (A); 0.5 to 3.0 parts by mass of a modified polyvinyl alcohol having a carbonyl group (B); 1.0 to 5.0 parts by mass of adipic acid dihydrazide (C); 5.0 to 10.0 parts by mass of an oxazoline compound (D); and water, wherein the aqueous dispersion (A) has a melting point of 143 to 148°C measured in accordance with JIS K 7121 under a nitrogen stream at a heating rate of 10°C / min, and an acid value of 20 to 30 mgKOH / g measured in accordance with JIS K 2501; and the modified polyvinyl alcohol (B) has a degree of saponification of 98 to 99 mol% measured in accordance with JIS K 6726.

The invention belongs to the technical field of coatings, and discloses a multipurpose varnish emulsion with excellent water whitening resistance, high hardness and brightness as well as a preparation method and application of the multipurpose varnish emulsion. The invention relates to a water-based adhesive which is prepared from the following components in percentage by mass: 8 to 12 percent of butyl acrylate, 30 to 35 percent of methyl methacrylate, 0.5 to 1.5 percent of diacetone acrylamide, 0.25 to 0.75 percent of adipic dihydrazide, 0.5 to 1 percent of allyl methacrylate, 0.5 to 1.5 percent of polyfunctional group crosslinking monomer, 0.5 to 1 percent of organic silicon crosslinking monomer, 0.2 to 0.5 percent of reactive emulsifier, 0.2 to 0.5 percent of persulfate and 50 to 55 percent of water. The cross-linking monomers, the emulsifier and the persulfate have specific selectable types. The preparation method comprises the steps of raw material preparation, pre-emulsification, seed emulsion preparation, polymerization reaction, heat preservation and curing, post-treatment and filtration, and the stirring speed, the reaction temperature and the dropwise adding time need to be accurately controlled. The emulsion is excellent in water whitening resistance and high in hardness, has a light effect, and is suitable for multiple scenes and high in practicability.

The present invention discloses a method for preparing a hydrogen-bond array type self-repairing polyurethane-urea luminescent fiber, which belongs to the field of composite materials. The present invention introduces a rigid aromatic heterocyclic fragment chain extender (NH2-UPy-OH) and a flexible fragment chain extender adipic acid dihydrazide (ADH) into a polyurethane prepolymer, reacts until the isocyanate is completely consumed, and obtains a polyurethane-urea (PU-ADPy) resin solution. The luminescent material is evenly dispersed in the polyurethane-urea resin solution, and a polyurethane-urea luminescent elastic fiber is prepared by a wet spinning process. The hydrogen-bond array type polyurethane-urea network prepared by the present invention can effectively improve the upper limit of the toughness of the material, and the self-repairing performance can improve the service life and service life of the luminescent textile, realizing the visual application of the luminescent material in wearable textiles and warnings.

The invention relates to the technical field of adhesives, and provides a modified cake protein-based adhesive and a preparation method and application thereof.The modified cake protein-based adhesive is prepared from cake protein, water, adipic dihydrazide, diacetone acrylamide, m-xylylene dimethyl isocyanate and filler, and the filler is starch or inorganic clay. The modified cake meal protein-based adhesive provided by the invention is high in mechanical strength, good in water resistance, high in universality and suitable for large-scale application.

The invention relates to a polyurethane elastomer composite material with high toughness and good elasticity and a preparation method thereof, and belongs to the technical field of polyurethane. The magnesium lithium silicate modified polyurethane elastomer is obtained by modifying a polyurethane elastomer after adipic dihydrazide modified magnesium lithium silicate; the addition amount of the adipic dihydrazide modified magnesium lithium silicate is 0.3%-0.7% of the mass of the polyurethane elastomer; in the adipic acid dihydrazide modified magnesium lithium silicate, the mass of the magnesium lithium silicate is 1.5%-2.5% of that of the adipic acid dihydrazide; the polyurethane elastomer is obtained by curing a viscous polyurethane prepolymer and a hydrazide chain extender. In the modified polyurethane elastomer modified by adipic acid dihydrazide modified magnesium lithium silicate, a hydrogen bond interface can be maximized, and energy can be efficiently consumed through reversible hydrogen bond fracture and crack deflection, so that the strength and toughness of the composite material are improved, and meanwhile, the composite material also has good elasticity.

This invention belongs to the field of water-based coating technology, specifically relating to a wall curing agent with formaldehyde-reducing properties and its preparation method. The wall curing agent provided by this invention comprises the following components: 60-70 parts modified acrylic resin emulsion, 20-25 parts deionized water, 3-5 parts propylene glycol ethyl ether acetate, 2-3 parts adipic acid dihydrazide, 1-2 parts dispersant, 6-10 parts sodium hydroxide, 0.8-1.2 parts defoamer, 0.5-1.2 parts nano titanium dioxide, 0.6-1 part silane coupling agent, and 0.5-1 part mildew inhibitor. The wall curing agent with formaldehyde-reducing properties provided by this invention does not require the use of film-forming aids or harmful substances such as formaldehyde. It self-dries at room temperature to form a tough and durable protective film with excellent anti-aging properties and weather resistance. It not only possesses good physical properties but also significantly improves the safety and durability of building structures.

The invention discloses bionic sugar polypeptide hydrogel with sugar modification combined with bisphosphonate-metal ion coordination as well as a preparation method and application of the bionic sugar polypeptide hydrogel, and belongs to the field of biomedical materials. The hydrogel comprises polypeptide modified by bisphosphonate and dopamine, polypeptide modified by bisphosphonate and glycosyl and a metal ion solution, and the preparation method comprises the following steps: carrying out amidation reaction on alendronate sodium, dopamine hydrochloride or adipic dihydrazide and polypeptide in a water solution, dialyzing, and drying to obtain the hydrogel. The polypeptide modified by the bisphosphonate and the dopamine or the polypeptide modified by the bisphosphonate and the hydrazide is obtained; wherein the bisphosphonate and hydrazide modified polypeptide are dissolved in an aqueous solution, monosaccharide is added for reaction and dialysis to obtain bisphosphonate and glycosyl modified polypeptide, the bisphosphonate and glycosyl modified polypeptide is blended with bisphosphonate and dopamine modified polypeptide, a metal ion solution is added for uniform mixing to obtain the bionic glycopolypeptide hydrogel, and the bionic glycopolypeptide hydrogel is used for preparing drugs or medical products for promoting wound healing of diabetes mellitus. The important clinical application value is realized.