122 results about "Adipic Dihydrazide" patented technology

The invention discloses a preparation method of injectable nano composite hydrogel for relieving osteoarthritis, which comprises the following steps: firstly, synthesizing nano rod-like hydroxyapatite with the length of 150-300 nm and the diameter of 10-15 nm, and the hydroxyapatite is hydrophilic hydroxyapatite doped with strontium and europium ions; the preparation method comprises the following steps: by taking Ca (NO3) 2, Sr (NO3) 2, Eu (NO3) 3 and soluble phosphate as main raw materials, carrying out hydrothermal reaction to prepare strontium and europium ion co-doped hydrophobic hydroxyapatite, dispersing the strontium and europium ion co-doped hydrophobic hydroxyapatite in a Tris-HCl buffer solution, adding tannic acid, stirring, centrifugally collecting precipitate, and drying to obtain strontium and europium ion doped hydrophilic hydroxyapatite; the preparation method comprises the following steps: taking chondroitin sulfate and adipic dihydrazide as main raw materials, stirring, dialyzing, freeze-drying, and dissolving in a buffer solution to obtain the chondroitin sulfate solution grafted with the hydrazide group; the preparation method comprises the following steps: taking hyaluronic acid, 3-aminophenylboronic acid and sodium periodate as main raw materials, stirring, dialyzing, freeze-drying, and dissolving in a buffer solution to obtain the phenylboronic acid group grafted oxidized hyaluronic acid solution; the preparation method comprises the following steps: blending hydrophilic hydroxyapatite doped with strontium and europium ions, a chondroitin sulfate solution grafted with a hydrazide group, an oxidized hyaluronic acid solution grafted with a phenylboronic acid group and a recombinant collagen solution, and stirring to obtain the injectable nano composite hydrogel. The injectable nano composite hydrogel obtained by the invention has good biocompatibility, and a favorable local immune microenvironment can be created to immunomodulate macrophages so as to relieve osteoarthritis and promote subchondral bone repair.

The invention relates to the technical field of wastewater resourceful treatment, in particular to a functional membrane for recycling precious metals in wastewater and a preparation method of the functional membrane. The specific preparation method comprises the following steps: preparing a polyamide spinning solution, carrying out electrostatic spinning on the spinning solution to form a polyamide fiber net, stably combining hollow mesoporous nano silicon dioxide on the fiber net through carboxymethyl chitosan, and grafting an epoxy silane coupling agent on the surface of the hollow mesoporous nano silicon dioxide to obtain the hollow mesoporous nano silicon dioxide fiber net. Finally, adipic dihydrazide is grafted on the hollow mesoporous nano silicon dioxide through a ring-opening reaction. Organic polyamide is used as a film forming substance, the raw material cost is low, the method is suitable for large-scale industrial production, the recovery rate of precious metal ions is high, and the film body has good mechanical strength and can stably operate for a long time.

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 discloses injectable hydrogel for eye drug sustained release and a preparation method and application thereof.The method comprises the steps that a NaIO4 solution is dropwise added into a hyaluronic acid solution, after the reaction is conducted in a dark place at the room temperature, ethylene glycol is added for continuous reaction, and formylated hyaluronic acid is prepared; the preparation method comprises the following steps: adding adipic dihydrazide into a carboxymethyl cellulose solution, uniformly stirring at room temperature, adding 1-hydroxybenzotriazole and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, and stirring to react, so as to prepare aminated carboxymethyl cellulose; and mixing the PBS solution of aminated carboxymethyl cellulose with the PBS solution of formylated hyaluronic acid, uniformly stirring, adding a to-be-carried drug and a FeCl3 solution, and carrying out a reaction to prepare the injectable hydrogel for sustained release of the eye drug. The hydrogel is convenient to use and high in gelation rate, effectively realizes controllable release of drugs, and has a wide application prospect in the field of biological medicines.

The invention discloses a double-response collagen-based conductive hydrogel, a medicine and a preparation and application method of the double-response collagen-based conductive hydrogel. The preparation method of the double-response collagen-based conductive hydrogel comprises the following steps: carrying out chemical modification on polysaccharide through 3-aminophenylboronic acid, and then carrying out sodium periodate oxidation treatment to obtain a dialdehyde polysaccharide grafted aminophenylboronic acid copolymer; the preparation method comprises the following steps: performing hydrazide modification on collagen through adipic acid dihydrazide, and performing free radical polymerization with aniline to obtain a hydrazide collagen grafted polyaniline copolymer; the dialdehyde polysaccharide grafted aminophenylboronic acid copolymer and the hydrazide collagen grafted polyaniline copolymer are subjected to crosslinking, and the double-response collagen-based conductive hydrogel capable of responding to glucose and the pH value is obtained. Compared with single-response conductive hydrogel, the hydrogel can specifically respond to the microenvironment of chronic diabetic wound surfaces and release antibacterial and anti-inflammatory drugs, and high-quality healing of chronic wounds such as diabetic foot ulcers and the like is promoted.

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 water-based coatings, and particularly discloses a friction-resistant anticorrosive coating and a production process thereof. The friction-resistant anticorrosive paint is mainly prepared from the following raw materials: a water-based acrylic emulsion, a water-based epoxy emulsion, a water-based fluorocarbon emulsion, modified silicon dioxide, adipic dihydrazide, oleic acid, a wetting dispersant, a coalescing agent, a base material wetting agent, an anti-settling agent, a defoaming agent and deionized water. The modified silicon dioxide is obtained by treating silicon dioxide with gamma-piperazinyl propyl methyl dimethoxy silane, N-(N-acetyl leucyl)-3-amino propyl triethoxy silane, 3-(methacryloyloxy) propyl triethoxy silane and diacetone acrylamide, and the modified silicon dioxide is obtained by treating silicon dioxide with gamma-piperazinyl propyl methyl dimethoxy silane, N-(N-acetyl leucyl)-3-amino propyl triethoxy silane, 3-(methacryloyloxy) propyl triethoxy silane and diacetone acrylamide. According to the friction-resistant anticorrosive paint, through mutual cooperation of the raw materials, a paint film is flat and smooth in appearance, good in glossiness, attractive and natural, has the advantages of being high in impact resistance, high in adhesive force and good in friction resistance, and meets market requirements.

The invention relates to the technical field of basement membrane emulsions, in particular to a basement membrane emulsion with an aldehyde removal function and a preparation method thereof.According to the basement membrane emulsion with the aldehyde removal function, an anionic emulsifier and a nonionic emulsifier are used in cooperation, the stability of emulsion particles can be improved, the used emulsifier can form a thick hydration layer, and the stability of the emulsion particles is improved; a good effect is achieved on the stability of latex particles; secondly, monomers, namely self-made adipic dihydrazide and self-made 3-hydroxybutenoic acid-2-ethylene methacrylate, capable of removing formaldehyde are compounded and then grafted to an acrylate polymer chain, so that the basic performance of the original emulsion is not influenced while functional groups for absorbing formaldehyde are retained; on the basis of improving the formaldehyde removal capability of the base film emulsion, the stability and durability of the self-made adipic dihydrazide and the self-made 3-hydroxybutenoic acid-2-ethylene methacrylate monomer can be improved, so that the base film emulsion can continuously play a role in removing formaldehyde in practical application.

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 present invention relates to the technical field of epoxy modified acrylic emulsion, and discloses a single-component self-crosslinking epoxy modified acrylic emulsion and a preparation method thereof. The acrylic emulsion prepared by the present invention comprises the following raw materials in parts by weight: 20-100 parts of butyl acrylate, 2-5 parts of alkenyl carboxylic acid, 80-150 parts of methyl methacrylate, 20-50 parts of ethyl acrylate, 4-6 parts of diacetone acrylamide, 2-3 parts of adipic acid dihydrazide, 5-8 parts of hyperbranched functional polyether, 10-20 parts of epoxy resin, 3-5 parts of acrylamide, 1-2 parts of water-soluble initiator, 5-8 parts of reactive emulsifier, 0.2-0.5 parts of buffer, 1-4 parts of neutralizer, and 200-300 parts of deionized water; the acrylic emulsion prepared by the present invention has excellent water resistance, solvent resistance, mechanical properties, stain resistance, UV resistance and stability.

The invention relates to the field of adhesives, and discloses a modified starch-based adhesive and a preparation method thereof, the modified starch-based adhesive comprises modified starch, adipic dihydrazide and borax; the modified starch is prepared by graft copolymerization of modified nano zinc oxide, diacetone acrylamide, diallyldimethylammonium chloride and starch; the modified nano-zinc oxide is prepared by grafting a modified silane coupling agent on the surface of nano-zinc oxide, and the modified silane coupling agent is prepared by performing dehydration condensation on an intermediate prepared by reacting itaconic anhydride and phenyltris (dimethyl siloxane) silane and allylamine to prepare a double-bond grafted intermediate; then, 2-mercaptobenzothiazole, 3-mercaptopropyltriethoxysilane and the double-bond grafted intermediate are subjected to a thiol-ene click reaction, and the adhesive is prepared. According to the invention, the modified starch, the adipic dihydrazide and the borax are added, so that the adhesive is endowed with good adhesive performance, water resistance, heat resistance, antibacterial performance and flame retardant performance.

The invention discloses self-repairing polyurethane, modified asphalt, a preparation method and application, and belongs to the technical field of high polymer materials. The preparation method of the self-repairing polyurethane comprises the following steps: (1) in the presence of a catalyst, mixing and reacting polytetrahydrofuran and isophorone diisocyanate to obtain a prepolymer; (2) the prepolymer and a chain extender are mixed and subjected to chain extension, polyurethane capable of being self-repaired is obtained, and the chain extender comprises adipic acid dihydrazide and bis (2-aminophenyl) disulfide; the molar ratio of the isophorone diisocyanate to the polytetrahydrofuran is (2 to 3): 1; the molar ratio of the bis (2-aminophenyl) disulfide to the adipic dihydrazide is (1-3): 1. The polyurethane is added into asphalt to obtain modified asphalt. The self-repairing polyurethane modified asphalt disclosed by the invention has excellent low-temperature and high-temperature performance, toughness, active healing capability and good regeneration performance.

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 provides cross-linked oxidized sodium hyaluronate as well as a preparation method and application thereof, and relates to the technical field of medicines. The preparation method of the cross-linked oxidized sodium hyaluronate comprises the following steps: (1) mixing oxidized sodium hyaluronate with water, and adding sodium citrate to obtain a treated oxidized sodium hyaluronate aqueous solution; the oxidation degree of the oxidized sodium hyaluronate is 10%-90%, and the weight-average molecular weight of the oxidized sodium hyaluronate is 5kDa-200kDa; (2) mixing the treated oxidized sodium hyaluronate aqueous solution with an activating agent for reaction to obtain an activated oxidized sodium hyaluronate aqueous solution; the activating agent is a mixture of adipic acid dihydrazide and carbodiimide; and (3) carrying out cross-linking reaction on the activated and oxidized sodium hyaluronate aqueous solution, amino acid and trehalose. The cross-linked oxidized sodium hyaluronate prepared by the invention has good elasticity and stability, is applied to preparation of medicines and cosmetics, and has the effects of remarkably promoting wound healing, resisting oxidation and resisting inflammation.

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 discloses an anti-inflammatory and anti-aging body lotion and a preparation method thereof, and relates to the technical field of skin care products. The preparation method comprises the following steps: firstly, carrying out oxidation treatment on beta-cyclodextrin by using sodium periodate, and introducing an active aldehyde group on a glucose unit of the beta-cyclodextrin, so as to form aldehyde beta-cyclodextrin with a unique function; the cavity structure of the beta-cyclodextrin has efficient embedding capacity, and the hydrophobic coenzyme Q10 can be tightly wrapped in the beta-cyclodextrin; the preparation method comprises the following steps: grafting adipic acid dihydrazide onto a hyaluronic acid skeleton to form hydrazinized hyaluronic acid with reaction activity; the hyaluronic acid is subjected to specific cross-linking reaction with aldehyde beta-cyclodextrin through hydrazino on the surface of the hyaluronic acid, a micro-capsule structure with a dynamic covalent bond-hydrazone bond is formed, a three-stage delivery mode of stable storage, intelligent release and accurate action is formed, active ingredients can be effectively protected, intelligent release can be achieved according to the pH value characteristic of skin, and the skin care effect is achieved. The inflammatory reaction is relieved, and the anti-inflammatory and anti-aging effects are achieved. The body lotion prepared by the invention has anti-inflammatory and anti-aging effects.

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.