192 results about "Glycidyl ethers" patented technology

The invention discloses a colorful acid and alkali resistant laser printing ink and a preparation method thereof. The printing ink is composed of the following components in parts by weight: 0 to 30 parts of butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of pigment, and 10 to 30 parts of glycidyl ether epoxy resin. The glycidyl ether epoxy resin is adopted to produce the printing ink, aliphatic polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the laser printing product is more abundant, and the patterns are more clear.

The invention relates to the technical field of ink, and discloses a preparation method of bio-based degradable water-based ink, which comprises the following steps: carrying out esterification polymerization on vanillin-based spiro acetal diglycidyl ether and diacid to obtain bio-based polyester resin, mixing and dispersing the bio-based polyester resin, petroleum-based resin, pigment, auxiliary agent and the like to obtain the bio-based degradable water-based ink. The bio-based degradable water-based ink is prepared. The bio-based resin contains a plurality of hydrophilic hydroxyl groups, has good solubility and dispersibility in the water-based ink, and generates denser hydrogen bonds and other cross-linking effects with the acrylic resin, so that the hardness of the ink is improved. Meanwhile, the polar hydroxyl groups also greatly enhance the hydrogen bond bonding and anchoring effect between the paint film and the base material, so that the adhesive force is improved. In addition, easily-hydrolyzed spiral acetal bonds, polyester structural units and other degradable chemical bonds in molecular chains of the bio-based resin provide more attack sites for water and microorganisms, the degradation rate is increased, and the degradable function is achieved.

The invention belongs to the technical field of nanocrystal nucleus early strength agents, and provides a damp and hot nanocrystal nucleus early strength agent, a tailing solidification filling material and a preparation method and application of the damp and hot nanocrystal nucleus early strength agent and the tailing solidification filling material. The invention discloses a molybdenum ore tailing slurry which is prepared from the following raw materials in parts by weight: 1 part of Portland cement, 4 to 6 parts of molybdenum ore tailings, 0.06 to 0.1 part of zeolite powder, 0.07 to 0.1 part of nanoscale attapulgite powder, 0.06 to 0.1 part of gamma-glycidyl ether oxypropyl trimethoxy silane, 0.03 to 0.1 part of potassium silicate, 0.04 to 0.1 part of sodium hydroxide, 0.06 to 0.1 part of calcium formate, 0.04 to 0.1 part of lithium metaaluminate and 1.25 to 1.75 parts of water. According to the technical scheme, the problem that a filling body prepared from an early strength agent in the prior art is low in early and later strength is solved, and meanwhile, the early strength agent is simple and convenient in preparation mode, low in cost and wide in application range.

The invention relates to the technical field of agricultural fertilizers, in particular to an organic-inorganic composite silicon-calcium-magnesium fertilizer and a preparation method and application of the organic-inorganic composite silicon-calcium-magnesium fertilizer. The high-temperature activated silicon-calcium-magnesium mineral powder is composed of calcined wollastonite powder, calcined serpentine powder, dolomite powder and zeolite powder; 2%-5% of an organosilane modifier, wherein the organosilane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane, and the organic silane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane; 18%-35% of a functional organic matter complex, wherein the functional organic matter complex is composed of mineral source sodium humate, bioactive small peptide, sodium alginate and polyglutamic acid; and 3%-8% of auxiliary functional components, so that the solubility and the bioavailability of silicon, calcium and magnesium elements in minerals are remarkably improved.

The invention provides a super wear-resistant polyurethane floor coating and a preparation method thereof, the super wear-resistant polyurethane floor coating comprises a component A, a component B and a component C. The component A comprises glycidyl ether compound modified polyisocyanate; the component B comprises a latent imine curing agent, a diluent, a functional auxiliary agent and a pigment filler; the component C comprises aggregate; the mass ratio of the component A to the component B to the component C is (4-6): (2-4): (1-3). By optimizing and modifying the components in the super wear-resistant polyurethane coating, the properties such as high hardness, excellent wear resistance and the like of the super wear-resistant polyurethane finish paint are maintained; the interlayer adhesive force between the super-wear-resistant polyurethane floor finish paint material and various epoxy floating coatings can be obviously improved, and the construction matching property in a high-humidity environment and the wear resistance of a whole floor coating system are improved.

The invention relates to degradable self-repairing epoxy resin based on adjustable performance of dual dynamic covalent bonds and preparation and application of the degradable self-repairing epoxy resin. Firstly, two dynamic bond curing agents (a hindered urea bond and an imine bond) are prepared respectively, and an epoxy monomer bisphenol A diglycidyl ether, the two curing agents and a cross-linking agent 4, 4 '-diphenyl-1, 3-pentanediol diglycidyl ether are mixed to prepare a mixture; the preparation method comprises the following steps: mixing 4, 4 '-diaminodiphenylmethane according to the proportion of each dynamic bond, stirring and reacting at 70-80 DEG C for 30-60 minutes, and carrying out vacuum defoaming; and finally, pouring the mixture into a mold, and molding through a gradient curing process. Compared with the prior art, two different dynamic bond curing agents are utilized to construct a double-dynamic epoxy cross-linked network, so that the obtained material has excellent performance and degradable self-repairing capability, and a high-performance solution capable of repairing, degrading and prolonging the service cycle is provided for the field of electrical insulation.

This invention discloses a bio-based flame-retardant thermally expanding powder coating and its preparation method, relating to the field of coatings. It comprises the following components: bio-based epoxy resin, phenolic epoxy curing agent, ammonium polyphosphate, nano-titanium dioxide, zinc borate, expanded graphene, 8-12 parts of imidazole, benzoin, and a leveling agent. The bio-based epoxy resin is prepared by ring-opening copolymerization of cashew phenol glycidyl ether and linoleic acid prepolymer, followed by epoxy end-capping, with an epoxy equivalent of 900-1200 g / eq; the phenolic epoxy curing agent has an epoxy equivalent of 200-250 g / eq; and the expanded graphene has an initial expansion ratio of 200-300 times. The preparation method employs a two-step, staged mixing process. This invention, while maintaining zero VOC in powder coatings and the same film thickness, achieves for the first time the outstanding performance of 6H hardness, UL94V-0 flame retardancy, and 120 times expansion ratio through the systematic synergy of high epoxy equivalent bio-based resin, four-component complete flame retardant system, specific EG:APP ratio, and two-step process.

The invention discloses an aged SBS modified asphalt repair type regenerant and a preparation method thereof, and the regenerant is prepared by mixing aromatic hydrocarbon oil with 1, 4-butanediol diglycidyl ether and then mixing with rubber powder. Wherein the dosage of each component is as follows: 3-8 parts of aromatic hydrocarbon oil, 0.5-2 parts of 1, 4-butanediol diglycidyl ether and 8-10 parts of rubber powder. The repairing type regenerant can uniformly improve the high-temperature performance, ductility, recovery rate and other performance of SBS asphalt, and the problem of imbalance caused by prominent or backward individual indexes due to single components is avoided. And finally, the comprehensive performance of the regenerated asphalt is superior to that of the aged asphalt and is better than that of the common mixed regenerated asphalt, so that the comprehensive quality improvement of the performance of the aged SBS modified asphalt is realized.

The invention relates to the field of ceramic packaging materials, in particular to a packaging material for a high-voltage-resistant ceramic side wall and a preparation method of the packaging material. The packaging material is prepared from an epoxy-silica hybrid prepolymer, an aluminum oxide and silicon dioxide core-shell composite filler, methylhexahydrophthalic anhydride and 2-ethyl-4-methylimidazole, wherein the hybrid prepolymer is prepared by carrying out hydrolytic condensation on bisphenol A diglycidyl ether, hydroxyl-terminated PDMS (Polydimethylsiloxane) and 3-glycidoxypropyltrimethoxysilane; low viscosity and low volatile matter are realized; the core-shell filler takes aluminum oxide as a core and silicon dioxide as a shell, and a shell layer is grafted with epoxy silane so as to be chemically bonded with resin. And after curing, the power frequency short-time electrical strength of the packaging layer is greater than or equal to 20 kV / mm, the partial discharge initial voltage is greater than or equal to 3 kV, the volatile matter is less than or equal to 1.0 wt%, and the water content is less than or equal to 0.2 wt%.

This invention relates to the field of polyurethane foam materials, specifically, to a preparation process for an aging-resistant and flame-retardant polyurethane foam material. The preparation process includes the preparation of a composite flame retardant, the preparation of component A, and the preparation of the polyurethane foam material. This invention integrates the composite flame retardant into the cross-linked network of the polyurethane foam material via chemical bonds. The composite flame retardant is prepared by grafting a phosphorus-containing flame-retardant structure onto the cage-like polysilsesquioxane structure after a ring-opening reaction between the epoxy groups in glycidyl etheroxypropyl cage-like polysilsesquioxane or octacyclooxycyclohexylethyl cage-like polysilsesquioxane and the acidic hydroxyl groups in diphenyl phosphate. The composite flame retardant of this invention is less prone to migration, precipitation, or loss, and improves the rigidity and aging resistance of the polyurethane matrix through its rigid cage structure and benzene rings, thereby improving flame retardant performance while reducing adverse effects on the mechanical properties of the foam material.

This invention relates to the field of protective coating technology for ships and marine engineering equipment, specifically to a high interfacial bonding strength gradient bonding layer and its preparation method. The preparation method includes grafting epoxy resin with γ-glycidoxypropyltrimethoxysilane; dissolving the modified epoxy resin, polydimethylsiloxane, and their respective curing agents in an organic solvent to obtain a blended resin precursor; coating the precursor onto the surface of an anti-corrosion paint and curing it to form a film. By controlling the migration rate of the resin components and the curing reaction rate during the curing process, a continuous gradient distribution structure is formed from the coating air interface to the substrate interface, with the concentration of modified epoxy resin continuously increasing and the concentration of polydimethylsiloxane continuously decreasing. This invention, through the synergistic regulation of thermodynamics and kinetics, forms an interpenetrating polymer network structure within the bonding layer, significantly improving the interfacial bonding strength and long-term service stability between the anti-corrosion paint and the antifouling paint.

The invention provides an in-use sewage pool body leakage repairing agent as well as a preparation method and a construction process thereof, and relates to the technical field of pool body anti-seepage transformation. The sewage pool body leakage repairing agent is prepared from the following raw materials in parts by weight: 30-40 parts of polyurethane resin, 20-30 parts of epoxy resin, 5-10 parts of an isocyanate curing agent, 1-3 parts of polyether modified silicone oil, 3-6 parts of ceramic powder, 1-3 parts of carbon fibers, 0.5-1 part of a silane coupling agent, 2-5 parts of propylene glycol diglycidyl ether, 0.3-0.5 part of an acid and alkali resistant anti-aging agent and 0.3-0.5 part of an anti-ultraviolet agent. By optimizing the component proportion of the leak repairing agent, the leak repairing agent has the characteristic of rapid solidification under a low-temperature condition, and has the effects of high strength, micro-expansion, good compactness and long-term performance; meanwhile, a temporary water storage bag, a temporary pump and a pipeline are adopted, so that the sewage treatment process is not interrupted when the leakage of the sewage pool body is repaired.

Belonging to the technical field of fabric degradation, the invention relates to an ecological green fabric degradation process, which belongs to the technical field of fabric degradation, and comprises the following steps: adding anhydrous N, N-dimethylformamide to a reaction kettle equipped with a mechanical stirrer, a condenser pipe and a nitrogen protection device to dissolve hyperbranched polyglycidyl ether with a number average molecular weight Mn of 2000-5000 g / mol, adding dibutyltin dilaurate of which the use amount is 0.1-0.5% of the mass of the hyperbranched polyglycidyl ether, dropwise adding 3-isocyanate propyl triethoxy silane while stirring, heating to 58-62 DEG C, and reacting for 3.5-4.5 hours, so that isocyanate groups react with part of hydroxyl groups on the surface of the hyperbranched polyglycidyl ether to form carbamate bonds; according to the scheme, a specific shell structure is constructed, so that the defect that degradation components are easy to lose in a traditional process is effectively overcome, and in an actual test, the scheme can effectively prevent the loss of functional components in a washing process and ensure the stability of the fabric in a taking period.

This invention provides a low-temperature resistant epoxy-terminated polyurethane toughened epoxy adhesive and its preparation method, comprising the following steps: Step 1, drying polyol and isocyanate; Step 2, adding the dried polyol, dried isocyanate, and a portion of catalyst at 50-60℃, and stirring; Step 3, continuing to maintain the 50-60℃ condition, adding glycidyl ether and the remaining catalyst, and stirring to obtain an epoxy-terminated polyurethane prepolymer; Step 4, slowly adding epoxy resin and stirring; Step 5, adding a curing agent to react; Step 6, eliminating air bubbles; Step 7, drying to further cure and obtain the epoxy-terminated polyurethane toughened epoxy adhesive. This invention can be used even in ultra-low temperature environments of -196℃, reducing engineering losses and safety issues caused by low-temperature brittle fracture of resin, extending service life, and saving manpower and resources. Simultaneously, the preparation process is simple and requires no complex equipment, and the synthesis temperature is low and easy to control.

The invention relates to an epoxy adhesive for assembling bridge segments in a marine environment and a preparation method, the epoxy adhesive comprises a component A and a component B. The component A comprises epoxy resin, modified epoxy resin, a reactive diluent, a thixotropic agent, a coupling agent, a defoaming agent, an ultraviolet light absorber and a filler; the epoxy resin comprises bisphenol A type epoxy resin, hydrogenated bisphenol A type epoxy resin and bisphenol F type epoxy resin, and the reactive diluent is C12-C14 alkyl glycidyl ether; the component B comprises a modified amine curing agent, a thixotropic agent and a filler, and the filler is formed by compounding different grades of active silica micropowder. Through molecular hydrophobic design, physical structure dense filling and interface chemical bonding, the adhesive has excellent wet concrete adhesion, extremely low chloride ion permeability, excellent damp-heat aging resistance and balanced construction manufacturability, and solves the problem of durability of a joint of a segment assembled bridge in a marine environment.

Provided are: an adhesive composition which has excellent solder heat resistance and adhesive strength and also has excellent dielectric properties such as a low relative dielectric constant and a low dielectric loss tangent; and an adhesive sheet, a laminate, and a printed wiring board which contain the adhesive composition. The adhesive composition according to the present invention contains a polyimide resin and an epoxy resin (E), and is characterized in that the epoxy resin (E) contains an epoxy resin (A) represented by formula (I): (In formula (I), R1-R5 each independently represent a hydrogen atom or a C1-10 alkyl group; the content of the glycidyl ether epoxy resin (B) contained as the epoxy resin (E) is 5 parts by mass or less with respect to 100 parts by mass of the polyimide resin.

A bisphenol-type diglycidyl ether composition containing a bisphenol C-type diglycidyl ether represented by the following formula (1) and a compound represented by the following formula (2):wherein, in the above formula (2), substituents R1 to R4 are each independently selected from the group consisting of a hydrogen atom and an alkyl group having 1 to 5 carbon atoms; a linking group X each independently represents a divalent hydrocarbon group having 1 to 13 carbon atoms, —O—, —S—, —SO2—, —C(CF3)2—, —CO—, or a direct bond; and m represents the number of repetitions and is an integer of 0 or more.

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

The invention provides a biomass adhesive and a preparation method thereof. The biomass adhesive comprises an elastomer modified epoxy resin adhesive component A and a biomass phenolic amine curing agent component B, compared with a conventional modification method of directly adding an external plasticizer, the preparation method of the elastomer modified epoxy resin comprises the following steps: pre-polymerizing elastomers such as rubber and a functional monomer, and carrying out ring-opening reaction on the pre-polymerized elastomers and the functional monomer and epoxy groups in liquid glycidyl ether epoxy resin to generate a sea-island structure prepolymer molecule with a preliminary prototype; the modification method can significantly improve the toughness and impact resistance of the prepared epoxy resin adhesive. The elongation at break of the biomass adhesive is larger than 100%, the impact strength can reach 180 KJ / m < 2 >, and the biomass adhesive has the advantages of being high in bonding strength, resistant to corrosion, high in structural strength after curing and the like and has wide application prospects and market potential.

The invention belongs to the technical field of coating preparation, and provides a fireproof heat-insulating nano ceramic coating for a lithium battery and a preparation method of the fireproof heat-insulating nano ceramic coating. The coating is a water-based two-component system, in a first component, bisphenol A diglycidyl ether, compound colloidal silicon dioxide, boehmite and nano zirconium oxide and / or nano aluminum oxide are used for constructing a ceramic skeleton, and aerogel, hollow glass beads, expanded vermiculite and / or flaky mica and inorganic fibers are combined to form a heat insulation network; the flame-retardant system contains ammonium polyphosphate, pentaerythritol, melamine components, zinc borate and sealing glass powder, silane interface bonding components and thermal expansion microspheres are introduced, an expansion thermal insulation layer is formed when the flame-retardant system is heated, and the flame-retardant system is densified into a hard shell at high temperature; the second component is a water dispersible amine curing agent; the preparation method comprises the following steps: adding the interface bonding components step by step, and sequentially compounding the inorganic phase and the flame-retardant heat-insulating phase to obtain the double-component packaged coating which is suitable for safety protection of a lithium battery system.

This application relates to the field of coating technology, specifically disclosing a heat-insulating, flame-retardant, and anti-corrosion coating and its preparation method. A heat-insulating, flame-retardant, and anti-corrosion coating comprises the following raw materials in parts by weight: 50-80 parts of silicone-acrylic emulsion, 10-15 parts of epoxy resin, 30-40 parts of heat-insulating microcapsules, 15-21 parts of hollow glass microspheres, 3-5 parts of dispersant, 0.5-2 parts of polypropylene glycol diglycidyl ether, 1-5 parts of leveling agent, and 15-20 parts of water. The heat-insulating microcapsules comprise an aluminum powder core and a heat-insulating and flame-retardant capsule wall layer, the capsule wall layer material comprising acrylic resin and polyamide resin. The preparation method is as follows: hollow glass microspheres and heat-insulating microcapsules are added to silicone-acrylic emulsion and water and dispersed evenly to obtain a mixture; the dispersant, polypropylene glycol diglycidyl ether, epoxy resin, and leveling agent are added to the above mixture and mixed evenly to obtain the interior wall insulation coating. The composition of this application achieves a comprehensive improvement in heat insulation, flame retardancy, and anti-corrosion performance.

The application discloses a kind of breathable far infrared fiber fabric and preparation method thereof, it is related to fiber fabric technical field.The application is prepared when breathable far infrared fiber fabric, phosphorus-containing triamino compound is reacted with double bond modified silane, hydroxypropyl methacrylate, 2-[2-hydroxy-5-[2-(methacryloyloxy) ethyl] phenyl]-2H-benzotriazole to obtain modified liquid;Pre-modified graphene is reacted with 3-bromopropyl-5,5-dimethyl hydantoin to obtain modified graphene;After dispersing modified graphene, fiber, 3-glycidyl ether oxypropyl trimethoxysilane, modified liquid are added, and modified fiber is prepared after reaction;After weaving and spinning modified fiber, soak sodium hypochlorite solution, and prepare breathable far infrared fiber fabric.The breathable far infrared fiber fabric prepared by the application has the advantages of air permeability, far infrared, antibacterial, flame retardant, ultraviolet protection and washing resistance.

The invention relates to a Janus nano silicon dioxide particle with double-enzyme split-phase distribution as well as a preparation method and application of the Janus nano silicon dioxide particle. The preparation method comprises the following steps: by taking gamma-glycidyl ether oxypropyl trimethoxy silane and octyl trimethoxy silane as modifying agents, modifying nano SiO2, so as to prepare nano SiO2Janus particles with an epoxy group; then adding glucose oxidase to covalently bind with epoxy groups on the surfaces of the particles, and stirring for reaction to obtain silicon dioxide particles with glucose oxidase immobilized on the hydrophilic side; and finally, adding a CALB enzyme solution, stirring and reacting, and centrifuging, washing and drying after the reaction is completed, so as to obtain the Janus nano silicon dioxide particles with double-enzyme split-phase distribution. Epoxy groups are introduced and can react with amino groups to achieve enzyme immobilization, use of a cross-linking agent in the immobilization process is avoided, immobilization conditions are mild, and operation is easy.

The application discloses a diaphragm suitable for EFB start-stop batteries and a preparation method thereof, and the diaphragm is prepared from raw materials containing the following components: polyethylene resin, modified functional composite filler, maleic anhydride grafted polyethylene, fluorine-containing processing aid and erucic acid amide; the modified functional composite filler is modified by mercapto-containing hyperbranched polyoxysilane, silicon dioxide and carboxylated carbon nanotubes, and the mercapto-containing hyperbranched polyoxysilane is obtained by hydrolytic condensation reaction of gamma-glycidyl ether propyl trimethoxysilane, cyclohexyl trimethoxysilane, dodecyl trimethoxysilane, aminopropyl triethoxysilane and mercaptopropyl trimethoxysilane. The diaphragm provided by the application has low resistance, high puncture resistance and antimony ion chelation function, and can meet the use requirements of EFB start-stop battery diaphragms.

The invention provides a delayed UV curing packaging adhesive for an OLED (Organic Light Emitting Diode) display panel, the OLED display panel and a manufacturing method of the OLED display panel. The delayed UV curing packaging adhesive for the OLED display panel comprises the following components in parts by weight: 40-70 parts of glycidyl ether epoxy resin; 1 to 10 parts of oxetane resin; 30 to 50 parts of a nano-scale filling material; 0.1 to 1 part of a defoaming agent; 0.1 to 2 parts of a photoinitiator; 0.1 to 2 parts of a dispersant; 0.1 to 5 parts of PS (polystyrene) microspheres; and 0.1-1 part of an organic delayed curing agent. The organic delayed curing agent is used for reducing the viscosity of the delayed UV curing packaging adhesive for the OLED display panel after UV pre-curing, so that the viscosity of the delayed UV curing packaging adhesive for the OLED display panel after UV pre-curing operation in the pressing and fixing operation process is 400 P.S to 1600 P.S. The delayed UV curing packaging adhesive for the OLED display panel not only can prevent external water, oxygen or pollutants from entering the box dam structure, but also can prevent the fill adhesive from overflowing from the box dam structure.

The application provides a wind power blade regenerated composite material and a preparation method and application thereof. The method provided by the application is characterized in that: first, retired wind power blade particles are mixed with a compounded solvent and then subjected to soaking treatment, so as to dissolve low-molecular-weight resins and imperfect three-dimensional network crosslinking structures in the retired wind power blade particles by using the compounded solvent; then, the surface of bare glass fibers is modified by using a gamma-glycidoxypropyltrimethoxysilane solution, so that the glass fibers have epoxy group active sites; then, an epoxy resin system is infiltrated and filled into the premixing material which has both pores and epoxy group active sites; then, hot pressing is performed; the pores of the three-dimensional network structure are physically combined with the epoxy resin, and the network structure is anchored together; the surface-modified glass fibers are chemically combined with the epoxy resin; and through the physical and chemical combination, the wind power blade regenerated composite material has excellent mechanical properties.

The application relates to the technical field of inks, and discloses a preparation method of a biobased degradable water-based ink. Vanillin-based spiroacetal diglycidyl ether and diacid are subjected to esterification polymerization to obtain a biobased polyester resin, and then the biobased resin is mixed and dispersed with a petroleum-based resin, pigments, additives and the like to obtain the biobased degradable water-based ink. The biobased resin contains multiple hydrophilic hydroxyl groups, has good solubility and dispersibility in the water-based ink, and has more intensive cross-linking effects such as hydrogen bond with the acrylic resin, so that the hardness of the ink is improved. Meanwhile, the polar hydroxyl groups greatly enhance the hydrogen bond combination and anchoring effect between the paint film and the base material, so that the adhesion is improved. In addition, the easily hydrolyzable spiroacetal bond and the degradable chemical bonds such as the polyester structural unit in the molecular chain of the biobased resin provide more attack sites for water and microorganisms, improve the degradability, and realize the degradable function.

The application relates to the field of soldering paste preparation, and particularly discloses an environment-friendly low-temperature soldering paste and a preparation method thereof. The environment-friendly low-temperature soldering paste comprises the following raw materials in percentage by weight: 76-82% of tin powder, 14-17% of a soldering flux, 3-5% of an active agent and 1-2% of an environment-friendly additive; the environment-friendly additive is glycidyl ether modified diatomite; and the preparation method of the glycidyl ether modified diatomite comprises the following steps: S1, diatomite pretreatment: diatomite is calcined at high temperature, ground, and filtered through a 300-mesh sieve to obtain pretreated diatomite; and S2, glycidyl ether modification: the pretreated diatomite is dispersed in an ethanol solution, glycidyl ether is added, mixed and stirred, and then filtered, washed and dried to obtain the glycidyl ether modified diatomite. The soldering paste prepared by the application can realize low-temperature welding, has superior environmental protection performance and low harmful substance content.

The application discloses a halogen-free flame-retardant high-load polypropylene master batch, raw materials of which include polypropylene, a compatilizer, a flame retardant, an interface modifier and a lubricant, the flame retardant accounts for more than 43% of the total mass of the master batch, and the flame retardant is a first coupling agent modified phosphorus-nitrogen flame retardant; the interface modifier is prepared by the reaction of long-chain segment end amino polydimethylsiloxane and short-chain segment second coupling agent with 1,4-butanediol diglycidyl ether; and the first coupling agent and / or the second coupling agent is one or a combination of a secondary amino coupling agent and a primary amino coupling agent. The first coupling agent is modified by the phosphorus-nitrogen flame retardant, and the interface modifier is prepared by the reaction of end amino polydimethylsiloxane and the second coupling agent with 1,4-butanediol diglycidyl ether, so that the dispersibility of the flame retardant is optimized, the content of the halogen-free flame retardant in the polypropylene master batch is increased, and the flame-retardant effect is improved under the premise of ensuring the mechanical properties.

This invention relates to the field of crop disease control technology, specifically to a composition containing antimicrobial peptides that enhances crop disease resistance. The composition comprises a synergistic and stable antimicrobial peptide carrier, a toad antimicrobial peptide (Buforin), cephalosporin B, and an antimicrobial peptide activator loaded onto the synergistic and stable antimicrobial peptide carrier. This invention prepares the synergistic and stable antimicrobial peptide carrier by reacting a mixture of cystamine, kasugamycin, and sorbitol glycidyl ether. This carrier enables precise controlled release of antimicrobial peptides at target sites, significantly prolongs the half-life of antimicrobial peptides in plants, solves the problems of easy degradation and short duration of action of conventional antimicrobial peptides, and synergistically enhances the stability of antimicrobial peptides, preventing aggregation or inactivation during loading and storage, thereby improving the bioavailability and persistence of antimicrobial peptides in field application.