1971 results about "Pentaerythritol" patented technology

The invention discloses an environment-friendly calcium-zinc composite heat stabilizer and a preparation method thereof, and relates to the technical field of heat stabilizers. The environment-friendly calcium-zinc composite heat stabilizer is prepared from the following raw materials in parts by mass: 10-20 parts of zinc stearate, 20-30 parts of calcium stearate, 10-15 parts of an auxiliary stabilizer, 5-8 parts of a plasticizer, 1-5 parts of an antioxidant and 2-5 parts of filler, wherein the auxiliary stabilizer is a mixture of beta-diketone, modified organic acid intercalated hydrotalcite and modified silicon dioxide; the modified organic acid intercalated hydrotalcite is obtained by splitting expanded vermiculite, adding zinc and lanthanum compounds, coprecipitating with organic acid, and adding a modifier; the modified silicon dioxide is obtained by adding a coupling agent into a solid substance obtained by splitting expanded vermiculite for modification and carrying out a series of chemical reactions with maleic anhydride and pentaerythritol. PVC plastic prepared by adding the calcium-zinc composite stabilizer into PVC paste resin and resin powder has good thermal stability.

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention relates to the technical field of high polymer material preparation, and discloses a bamboo fiber graft modified full-biodegradable composite membrane material preparation process which comprises the following steps: firstly, performing hot mixing and cooling on dried bamboo fiber powder, anhydrous citric acid, choline chloride, activated zinc oxide and pentaerythritol to prepare a bamboo fiber modified premix; then mixing the biodegradable polyester resin with the premix; adding the mixture into an extruder, injecting epoxidized soybean oil into a barrel through a liquid metering device, and performing melt extrusion granulation under a vacuum exhaust condition; and finally carrying out blow molding to form the film. Through in-situ reaction extrusion of multi-component synergism, surface grafting of bamboo fibers, chain extension of a polyester matrix and interface chemical bonding of the bamboo fibers and the polyester matrix are achieved, interface compatibility is effectively improved, degradation of the material in the processing process is inhibited, and the mechanical property and thermal stability of the composite film material are remarkably improved; the process is efficient and environment-friendly, and the cost is controllable.

The invention relates to a halogen-free intrinsic flame-retardant waterborne polyurethane material and a preparation method thereof, and belongs to the field of functional polymer materials and fine chemical engineering. The halogen-based flame-retardant waterborne polyurethane disclosed by the invention is prepared from diisocyanate, long-carbon-chain polyether polyol, a catalyst, a chain extender, deionized water and a salt-forming agent through reaction; the hydrophilic chain extender is prepared from pentaerythritol, phosphorus oxychloride and p-hydroxyphenylpropionitrile through a reaction, and is a flame-retardant chain extender of a diamine structure containing phosphorus and nitrogen flame-retardant elements. The waterborne polyurethane material prepared by the method has a certain flame-retardant effect, and is simple in preparation process, relatively low in cost, very good in practicability and economical efficiency and good in market prospect.

The preparation method comprises the following steps: adding a hydroxyl derivative of bis-spiro pentaerythritol diphosphate and hydroxyl-terminated polysiloxane into a three-neck flask which is provided with a mechanical stirrer and a thermometer together, uniformly stirring, adding an organic silicon catalyst, stirring, adding an organic silicon catalyst, stirring, adding an organic silicon catalyst, stirring, adding an organic silicon catalyst, stirring, adding an organic silicon catalyst, stirring, adding an organic silicon catalyst, and stirring to obtain the UV-cured polyurethane with the synergistic flame retardance of the bis-spiro phosphate and the organic silicon, thereby obtaining the UV-cured polyurethane with the synergistic flame retardance. Dibutyltin dilaurate and diisocyanate are dropwise added for a reaction, then hydroxypropyl methacrylate is added, the reaction continues to be conducted, and a polyurethane prepolymer containing bis-spiro phosphate and organic silicon is obtained; and then adding an ultraviolet light initiator, and carrying out UV curing to obtain the UV-cured polyurethane. The pencil hardness of the UV curing material is 2B-9H, the initial thermal decomposition temperature is 246.0-298.2 DEG C, the LOI is 26.0-33.2%, the flame retardant grade is V-1-V-0 grade, and the UV curing material can be used as an electronic flame retardant sealant, a flame retardant three-proofing paint, a flame retardant industrial paint, a flame retardant tent cloth coating and the like.

The invention discloses bone cement for orthopedic repair and a preparation method thereof, and relates to the technical field of bone cement. The bone cement for orthopedic repair comprises solid-phase powder and a liquid-phase component, the solid-phase powder comprises the following components in parts by weight: 55-65 parts of composite calcium phosphate, 10-15 parts of bioactive glass, 2-3 parts of a developing agent, 1-2 parts of hydroxyapatite, 8-12 parts of a modified toughening agent and 2-3 parts of nano cellulose fibers; the liquid phase component is prepared from the following components in parts by weight: 40 to 50 parts of a sodium alginate solution, 10 to 20 parts of methacrylated gelatin, 0.5 to 1 part of transglutaminase, 30 to 60 parts of a citric acid buffer solution and 1 to 2 parts of an antibacterial agent. The preparation method comprises the following steps: reacting pentaerythritol with 12-oxododecanoic acid to obtain an intermediate 1, and reacting the intermediate 1 with dopamine to prepare the modified toughening agent. The bone cement for orthopedic repair prepared by the invention has good mechanical, self-repairing and antibacterial properties.

The invention relates to the field of adhesives, and particularly discloses an OCA optical adhesive for a folding screen and a preparation method of the OCA optical adhesive. The OCA optical adhesive for the folding screen is prepared from the following raw materials in parts by weight: 60 to 80 parts of urethane acrylate, 15 to 25 parts of organic silicon grafted glycidyl ether, 20 to 30 parts of a diluent, 5 to 10 parts of a photoinitiator and 1 to 2 parts of an antioxidant, the organic silicon grafted glycidyl ether is prepared by reacting vinyl siloxane, pentaerythritol triallyl ether, allyl glycidyl ether and a catalyst. The OCA optical cement for the folding screen prepared by the invention is applied to the folding screen, and can keep relatively good elasticity, bending resistance and bonding strength in the long-term repeated folding use process, and wrinkles and bubbles are not easy to appear.

The invention relates to the technical field of high-performance polyester, in particular to a high-strength low-shrinkage polyester fiber and a preparation method thereof. The defects that existing polyester fibers are poor in strength and shrinkage resistance are overcome. The preparation method comprises the following steps: mixing the modified resin, the modified nano silicon dioxide, the composite antioxidant, the composite nucleating agent and the composite lubricant, and carrying out melt spinning. Wherein the modified resin is prepared from the following raw materials: dimethyl terephthalate, isophthalic acid, ethylene glycol and isosorbide; the modified nano silicon dioxide comprises nano silicon dioxide, KH570 and silver nitrate; the composite antioxidant comprises an antioxidant 1010, an antioxidant 168 and an antioxidant 1222; the composite nucleating agent comprises sodium benzoate and nano montmorillonite; the composite lubricant is prepared from ethylene bis stearamide and pentaerythritol stearate. The prepared polyester fiber is high in strength, high in shrinkage resistance and suitable for manufacturing of outdoor equipment.

The invention relates to the field of quantum dot ink, and discloses diffusion plate printing quantum dot ink and a preparation method thereof.The diffusion plate printing quantum dot ink comprises acrylic resin, hyperbranched polyester resin, a quantum dot material, modified boron nitride, a reactive diluent, a photoinitiator, a wetting agent and a defoaming agent; the hyperbranched polyester resin is prepared by reacting hyperbranched polyester acrylate and a sulfydryl-terminated silicon-containing reaction monomer, wherein the hyperbranched polyester acrylate is prepared by reacting pentaerythritol with 2, 2-dimethylolpropionic acid and then carrying out esterification reaction with acrylic acid; the sulfydryl-terminated silicon-containing reaction monomer is prepared by reacting eugenol with 1, 1, 3, 3-tetramethyldisiloxane and then carrying out esterification reaction with 3-mercaptopropionic acid; the modified boron nitride is prepared by modifying a cationic polymer which is prepared by carrying out a Mannich reaction on triethylene tetramine, formaldehyde and acetone and then carrying out a condensation polymerization reaction with formaldehyde. After the ink prepared by the invention is cured, a coating film is high in hardness, adhesive force and heat conductivity coefficient, and good in flexibility, heat resistance and migration barrier property.

The invention relates to the technical field of adhesives, and discloses a weather-resistant transparent adhesive, a preparation method and application of the weather-resistant transparent adhesive to adhesion of a weather-resistant and wear-resistant transparent film and a color-coated sheet. The preparation method of the weather-resistant transparent adhesive comprises the following steps: reacting 4-(2, 3-ethylene oxide) benzaldehyde with tetrakis (3-mercaptopropionic acid) pentaerythritol ester to obtain an intermediate product A; reacting the intermediate product A with 4, 5-diaminobenzene-1, 2-diphenol to obtain an intermediate product B; preparing nano zinc oxide, performing surface modification on the nano zinc oxide, and grafting the intermediate product B to obtain an organic-inorganic hybrid curing agent; modifying epoxy resin by using the composite modifier to obtain modified epoxy resin; the modified epoxy resin, the organic-inorganic hybrid curing agent and the accelerant are mixed and stirred, and the weather-resistant transparent adhesive is obtained; the weather-resistant transparent adhesive disclosed by the invention is high in transparency and has excellent mechanical strength, toughness, adhesiveness and weather resistance.

The invention discloses a phosphate composite flame retardant and a preparation method thereof, and relates to the technical field of flame retardants. The phosphate ester composite flame retardant is prepared from phosphorus-nitrogen grafted and coated network-shaped silicon dioxide powder, a Co-MOF composite graphene oxide catalytic carrier and pentaerythritol phosphate ester, the phosphorus-nitrogen grafted coated network-shaped silicon dioxide powder is prepared from a network-shaped dispersion modifier, silicon dioxide, dopamine hydrochloride, phosphorus oxychloride and 4, 4-diaminodiphenyl methane, a Co-MOF composite graphene oxide catalytic carrier is filled with phosphorus-nitrogen grafted and coated network-shaped silicon dioxide powder and pentaerythritol phosphate, migration of components is effectively reduced, the thermal stability of a flame-retardant system is enhanced, meanwhile, the compatibility and dispersity in an epoxy resin matrix are improved, the phosphorus-nitrogen grafted and coated network-shaped silicon dioxide powder, the pentaerythritol phosphate and the phosphorus-nitrogen grafted and coated network-shaped silicon dioxide powder have a synergistic effect, and the flame-retardant effect is improved. A carbon residue layer after combustion is more compact and continuous, isolation and protection effects can be better played, and the flame retardant property is remarkably improved.

The invention relates to the technical field of surface coating materials, in particular to a multifunctional surface coating which comprises the following raw materials: organic silicon modified acrylic resin, an intumescent flame retardant, hollow glass beads, nano titanium dioxide, an auxiliary agent, graphene, silver nanoparticles and flaky zinc powder. The intumescent flame retardant is formed by compounding melamine polyphosphate and pentaerythritol, and the auxiliary agent comprises a dispersing agent, a flatting agent and a plasticizer. By integrating multiple functions of fire prevention, water prevention, heat insulation, self-cleaning and the like into a whole, the complex requirements of different fields of buildings, industry, traffic and the like on material performance can be comprehensively met. In the application of building exterior walls, the fireproof safety, the waterproof sealing performance and the heat insulation performance of buildings can be effectively improved, and energy consumption is reduced; in the aspect of industrial equipment protection, equipment can be protected from being damaged by environmental factors such as high temperature, moisture and corrosion, and the service life of the equipment is prolonged.

The application belongs to the technical field of daily chemical industry, and particularly relates to an emulsion and a preparation method thereof. The emulsion provided in the application comprises an emulsifier, glycerol, oil-phase active substance, pentaerythritol tetra(ethylhexanoate) and water; the emulsifier is a lipopeptide; the weight percentage of the lipopeptide and the glycerol is not less than 3%; the weight ratio of the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) is 1:3-10; the ratio of the sum of the weights of the lipopeptide and the glycerol to the sum of the weights of the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) is 1:3-10; and the ratio of the sum of the weights of the lipopeptide, the glycerol, the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) to the weight of the water is 1:1-4. The emulsion is prepared by using sodium bacillomycin, glycerol and pentaerythritol tetra(ethylhexanoate), can effectively inhibit the diffusion of the oil-phase active substance at the interface of the emulsion, reduce the oxidative degradation of the oil-phase active substance, and greatly prolong the effective action time of the oil-phase active substance in the emulsion.

The invention relates to the technical field of insulating materials, in particular to insulating powder and a preparation method thereof. The invention discloses a flame-retardant coating which comprises the following components in parts by weight: 15-25 parts of epoxy resin, 10-20 parts of aluminum hydroxide, 5-12 parts of nano boron nitride, 1-3 parts of a silane coupling agent KH-560, 3-8 parts of polytetrafluoroethylene micro powder, 2-6 parts of fluorine-modified montmorillonite, 4-9 parts of melamine cyanurate, 2-5 parts of nano titanium dioxide, 1-4 parts of a fluorine-modified graphene oxide-polyaniline composite material and 0.5-2 parts of pentaerythritol stearate. The anti-corrosion coating is prepared from the following components in parts by weight: 1 to 3 parts of nano zinc oxide, 5 to 10 parts of glass fiber, 2 to 5 parts of polyhedral oligomeric silsesquioxane-polyimide copolymer, 1 to 4 parts of ferrocenyl epoxy resin and 0.5 to 2 parts of perfluorooctyltriethoxysilane. The insulation powder is high in corrosion resistance, excellent in insulation, heat dissipation and mechanical performance, environmentally friendly in processing, good in adaptability, capable of prolonging the service life of equipment and reducing the cost, suitable for special environments and wide in popularization prospect.

Provided are a secondary cured UV pressure-sensitive adhesive, and preparation methods for same and an explosion-proof film. The secondary cured UV pressure-sensitive adhesive is composed of the following materials, in percentages by mass: 31-35% of a hydroxyl-containing polyacrylate prepolymer, 6-9% of pentaerythritol triacrylate, 3-5% of 2-hydroxyl-3-phenoxy propane acrylate, 2-3% of an isocyanate curing agent, 2-3% of photo initiator 184, and 50% of ethyl acetate. The secondary cured UV pressure-sensitive adhesive is prepared by carrying out a thermal curing cross-linking reaction of a hydroxyl-containing polyacrylate prepolymer, pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using an isocyanate curing agent, and initiating a free radical polymerization of pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using photo initiator 184.

The invention relates to the technical field of cables, in particular to a high-toughness halogen-free flame-retardant crosslinked cable and a preparation method thereof.High-density polyethylene, ethylene-vinyl acetate copolymer, modified MXene and auxiliaries are mixed and co-extruded, and ultraviolet radiation crosslinking is adopted to prepare a reinforcing layer of the cable; the preparation method comprises the following steps: firstly, coating MXene with dopamine, treating with tert-butyldimethylsilyl chloride, then grafting DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), and then introducing double bonds on the composite MXene; a self-repairing polyurethane emulsion, modified MXene and a photoinitiator are blended to prepare a protective coating, the surface of the reinforcing layer is coated with the protective coating, light curing treatment is carried out, and the water-resistant and corrosion-resistant protective layer sleeve with the self-repairing surface is prepared; a chain extender containing boric acid ester bonds and disulfide bonds is added in the preparation of the self-repairing polyurethane emulsion, and pentaerythritol triacrylate is used as a photosensitizer.

The invention is suitable for the technical field of solid hydrogen storage, and provides a preparation method and application of a PCN-doped MOF derived nano-porous hydrogen storage composite material. The preparation method comprises the following steps: firstly, synthesizing a cobalt-nickel bimetallic MOF material, and introducing melamine polyphosphate and pentaerythritol ester in the synthesis process; introducing metal vanadium ions to obtain an MOF derivative, and calcining the MOF derivative to obtain the PCN-doped MOF derivative nano-porous hydrogen storage material. And compounding with magnesium hydride to obtain the V-Ni-Co / PCN + MgH2 hydrogen storage composite material. The hydrogen storage capacity of the prepared material reaches 7.0 wt% or above, rapid hydrogen absorption can be started at 40 DEG C, the dehydrogenation starting temperature is reduced to about 150 DEG C, rapid hydrogen absorption / hydrogen desorption is completed within 30 min and 45 min respectively, and excellent hydrogen storage thermal / dynamic performance is shown; after 100 times of hydrogen absorption and desorption cycles, the hydrogen storage capacity retention rate of the material is as high as 97%, and the material shows excellent cycle stability.

The invention discloses a halogen-free flame retardant antistatic nylon, wherein the raw materials of the nylon mainly include a PA6 matrix, a POE graft, a nylon black masterbatch and a modified additive; the modified additive includes a flame retardant-antistatic synergistic additive, a lubricant, an antioxidant and a dispersant; the flame retardant-antistatic synergistic additive includes a microencapsulated halogen-free flame retardant and a compound of modified carbon nanotubes and carbon fibers; the modified carbon nanotubes are grafted with spiropentaerythritol dichlorophosphate (SPDPC) by an organic silicon coupling agent to form a bifunctional organic silane compound. The present application provides a halogen-free flame retardant antistatic nylon and a preparation method and application thereof, which are used to improve the flame retardant and antistatic effects of PA6 and further increase the mechanical properties of PA6.

The invention relates to high-wettability special-shaped polyester fiber spinning oil and a preparation method thereof. The preparation method comprises the following steps: weighing and preparing required materials according to actual use requirements; the method comprises the following steps: pre-balancing the materials under the condition of 35-45 DEG C before feeding; sequentially adding a smoothing agent, a bundling agent, an antistatic agent, a wetting and penetrating agent, an anti-coking agent and a wetting and penetrating auxiliary agent, and fully and uniformly mixing the materials in a manner of adding materials while stirring; the oiling agent disclosed by the invention is high-wettability special-shaped polyester fiber spinning oiling agent, and contains 5-10wt% of a main wetting and penetrating agent consisting of isotridecanol polyoxyethylene polyoxypropylene ether and pentaerythritol oleate, and also contains a wetting and penetrating auxiliary agent; due to the addition of the wetting and permeating auxiliary agent, the wetting and permeating performance of the oiling agent is greatly improved, the wetting and permeating performance of the oiling agent is excellent, and the oiling agent can well adapt to the production process of the special-shaped polyester fibers.

A flame-retardant laminated solid wood composite floor and a manufacturing method therefor. The manufacturing method comprising: first reacting dopamine hydrochloride with acryloyl chloride to generate a dopamine acrylamide monomer; by means of a double bond in the dopamine acrylamide monomer, carrying out a click reaction with a phosphate monomer containing a sulfydryl group, so as to introduce a catechol group into a side chain of the phosphate monomer and obtain a flame-retardant monomer containing the double bond; and then mixing pentaerythritol tetra(3-mercaptopropionate), pentaerythritol triacrylate, perfluorodecanethiol and the flame-retardant monomer containing the double bond to obtain a photocurable coating material. The coating material is photocured after being coated on the surface of a wood veneer, thus effectively improving the flame-retardant performance of the wood veneer; moreover, the adhesion between the coating layer and the wood veneer is excellent. The wood veneers are laminated in multiple layers, are glued and assembled into a layered structure, and then hot-pressed to form the solid wood composite floor, thus improving the comprehensive performance.

The invention provides a tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick. The tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick is prepared from the following components in percentage by mass: 10 to 30 percent of modified polydimethylsiloxane, 0.1 to 2 percent of modified silicon dioxide, 1 to 10 percent of pentaerythritol tetraisostearate, 10 to 35 percent of an emollient, 0.01 to 20 percent of a skin conditioner and 0.1 to 50 percent of an auxiliary agent, wherein the modified polydimethylsiloxane is obtained by copolymerizing hexadecyl methacrylate, vinyl-terminated polydimethylsiloxane and methylacryloylated sodium alginate, and the modified polydimethylsiloxane and the methylacryloylated sodium alginate are co-polymerized; the modified silicon dioxide is obtained by reacting hydroxylated silicon dioxide with alkyl acid. According to the invention, ester groups, alkyl chain segments and the like are introduced into the modified polydimethylsiloxane, so that the modified polydimethylsiloxane has good compatibility with other components, the dispersity and stability of active components can be effectively enhanced, and the effects of tightening, resisting wrinkles, relieving and the like of the modified polydimethylsiloxane are improved.

The invention discloses a hyperbranched water reducing agent for high-tensile wet joint UHPC (Ultra High Performance Concrete) as well as a preparation method and application of the hyperbranched water reducing agent, and belongs to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing pentaerythritol and maleic anhydride, adding a catalyst p-toluenesulfonic acid, and carrying out an esterification reaction to prepare an esterification product; carrying out amidation reaction on the esterification product, diethanol amine and a catalyst sodium ethoxide to obtain a prepolymer; acrylic acid, maleic anhydride and the prepolymer are dissolved in deionized water, an initiator ammonium persulfate is added for a free radical copolymerization reaction, and a main chain polymer is obtained; carrying out phosphorylation reaction on the main chain polymer and phosphorus pentoxide to obtain a phosphorylated main chain polymer; the phosphorylated main chain polymer, methoxypolyethylene glycol and a catalyst p-toluenesulfonic acid are subjected to an etherification reaction, a hyperbranched comb-shaped polymer water reducing agent solution is obtained and then subjected to aftertreatment, and the water reducing agent is prepared. According to the hyperbranched comb-shaped polymer water reducing agent prepared by the preparation method disclosed by the invention, the problems of poor flowability and high viscosity of ultra-high performance concrete (UHPC) are solved by combining a linear side chain of a comb-shaped structure and a three-dimensional branch of hyperbranched topology.

The invention relates to the technical field of cables, and particularly discloses a high-performance halogen-free flame-retardant flexible power cable. The high-performance halogen-free flame-retardant flexible power cable comprises a core layer, an insulating layer, a flame-retardant layer, a shielding layer and a protective layer which are arranged in sequence, the flame-retardant layer is prepared from the following raw material components in parts by weight: 30 to 40 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of polyolefin elastomer, 8 to 10 parts of microencapsulated ammonium polyphosphate, 2.5 to 4.5 parts of pentaerythritol, 20 to 30 parts of inorganic flame retardant, 5 to 8 parts of expansible graphite, 2 to 3 parts of diatomite, 0.5 to 1.5 parts of nano kaolin, 2 to 3 parts of zinc borate, 0.1 to 0.5 part of antioxidant and 0.5 to 1.0 part of lubricant. The cable provided by the invention not only has good flame retardant property, but also has certain flexibility.

The invention discloses a coating type high-molecular flame-retardant material. The composite material is prepared from the following components: organic silicon modified epoxy resin, a bio-based castor oil derivative, hydroxyapatite, carbon nanofibers, expanded graphite, ammonium polyphosphate, zinc borate, nano silicon dioxide, molybdenum oxide, microencapsulated red phosphorus, magnesium hydroxide, melamine cyanurate, aluminum diethylphosphinate, pentaerythritol, trihydroxymethyl phosphine oxide and a silane coupling agent. The coating is prepared from a titanate coupling agent, stearic acid, polyethylene glycol, 2, 6-butylated hydroxytoluene, triphenyl phosphite, 2, 4-dihydroxybenzophenone, sebacic diester, polytetrafluoroethylene micro powder, a modified polydimethylsiloxane flatting agent, organic montmorillonite, a polyether modified silicon defoaming agent and a solvent. The invention has the beneficial effects of high flame retardant efficiency, environmental friendliness, excellent comprehensive performance and excellent processability.

The invention relates to the field of coatings, and discloses weather-resistant and scratch-resistant coated glass and a preparation method thereof.The coated glass comprises a glass substrate and a functional coating formed by thermocuring of a coating composition, and the coating composition comprises waterborne polyurethane, a functional additive and modified graphene oxide; the functional additive is prepared from silica sol and aminopropyl double-terminated polydimethylsiloxane grafted modified nano titanium dioxide; the modified nano titanium dioxide is prepared by enabling 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole and a chloropropyl silane coupling agent to react, grafting the reaction product on the surface of nano titanium dioxide, and then grafting isophorone diisocyanate and pentaerythritol triacrylate; the modified graphene oxide is prepared by grafting a flame-retardant modifier prepared by reacting 3-amino-1, 2, 4-triazole, an amino silane coupling agent, terephthalaldehyde and DOPO with graphene oxide, and the coated glass prepared by the preparation method disclosed by the invention is high in hardness, good in flame retardance and antifouling effect and excellent in wear resistance and ultraviolet resistance.

The invention relates to the technical field of polyurethane adhesives, and provides a heat-conducting polyurethane structural adhesive and a preparation and use method thereof.The heat-conducting polyurethane structural adhesive comprises a first component and a second component, and the first component comprises modified bio-based polyol, polythiol, heat-conducting filler, a first water removal agent, a thixotropic agent, a first catalyst and a second catalyst; the second component comprises epoxy resin, diisocyanate, polyisocyanate, a heat-conducting filler, a coupling agent, a second dewatering agent, a dispersing agent and a retarder; the modified bio-based polyol is selected from at least one of modified castor oil polyol, modified grease polyol and modified cashew nut shell oil polyol; the polythiol is selected from at least one of trimethylolpropane tri (3-mercaptopropionic acid ester), pentaerythritol tetra (3-mercaptopropionic acid ester), butanediol mercaptopropionic acid ester and polythiol. Through the arrangement, the heat-conducting polyurethane structural adhesive has relatively long openable time, and is rapidly cured at room temperature within a short time to generate relatively high initial curing strength.

The present invention relates to the technical field of seawater desalination membranes, and discloses a durable seawater desalination membrane and a preparation method thereof. The present invention uses pentaerythritol as an initiator, uses propylene oxide and ethylene oxide as raw materials to synthesize a hyperbranched polyether, and then undergoes an ester exchange reaction with 2-aminoethyl acetate to synthesize a modified hyperbranched polyether. The ZIF-8 material is then synthesized by a hydrothermal method, and MoS2 nanosheets are coated on its surface to obtain a MoS2 / ZIF-8 composite material, which is then surface-modified by a silane coupling agent to obtain a modified MoS2 / ZIF-8 composite material. Finally, a casting solution is formed using polysulfone and a modified MoS2 / ZIF-8 composite material to obtain a base membrane, and the base membrane is then sequentially immersed in an aqueous phase solution and an oil phase solution to form a polyamide film layer, thereby obtaining a durable seawater desalination membrane. The seawater desalination membrane prepared by the present invention has excellent water flux, desalination rate and durability.

The invention relates to high-flexibility phenolic-aldehyde-free rosin modified resin, and belongs to the technical field of rosin resin. The raw materials comprise rosin, maleic anhydride, phthalic anhydride, pentaerythritol, glycerol, an acrylate monomer and magnesium oxide. The preparation process comprises four key reactions: (1) rosin and maleic anhydride are subjected to a Diels-Alder reaction to construct a rigid skeleton; (2) introducing phthalic anhydride to form a compact cross-linked network; (3) carrying out composite esterification on pentaerythritol and glycerol; and (4) the interface binding energy is improved by regulating and controlling the in-situ RAFT polymerization of the acrylate monomer. The resin does not contain phenolic aldehyde components, VOCs emission is smaller than 50 g / L, free formaldehyde is not detected, and the resin has high flexibility, heat resistance and excellent chemical resistance.

The invention relates to the field of polyurethane hot melt adhesives, and particularly discloses a moisture-curing reaction type polyurethane hot melt adhesive for bags and suitcases and a preparation method of the moisture-curing reaction type polyurethane hot melt adhesive. The moisture-curing reaction type polyurethane hot melt adhesive is prepared from the following raw materials in parts by weight: 10 to 20 parts of polyether polyol, 40 to 60 parts of polyester polyol, 20 to 50 parts of isocyanate, 0.5 to 1.5 parts of a catalyst, 10 to 20 parts of tackifying resin, 3 to 5 parts of a viscosity stabilizer, 1 to 3 parts of pentaerythritol diacrylate, 5 to 10 parts of an auxiliary agent and 3 to 5 parts of a coupling agent, according to the moisture-curing reaction type polyurethane hot melt adhesive for the bags and suitcases, the polyether polyol, the polyester polyol and the isocyanate react to generate a polyurethane prepolymer, so that the hot melt adhesive has relatively good flexibility and durability; and the tackifying resin, the pentaerythritol diacrylate and the viscosity stabilizer are used for promoting the polyurethane hot melt adhesive to have better initial adhesion and final adhesion strength, so that the polyurethane hot melt adhesive can be firmly adhered to a base material more quickly.

The invention relates to the technical field of preparation of building external wall thermal insulation materials, in particular to a building external wall thermal insulation board based on pearl wool and a preparation method of the building external wall thermal insulation board. The core layer is prepared from the following raw materials in parts by weight: 40 to 60 parts of pearl wool particles, 5 to 15 parts of graphene-loaded expanded graphite, 3 to 10 parts of nano silicon dioxide aerogel, 10 to 20 parts of ammonium polyphosphate, 5 to 12 parts of pentaerythritol, 3 to 8 parts of melamine, 15 to 25 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of maleic anhydride grafted polyethylene, 2 to 6 parts of nano montmorillonite and 1 to 5 parts of silicon carbide whisker; the composite material is prepared from the following components in parts by weight: 0.5-2 parts of a silane coupling agent KH560, 0.2-0.8 part of an antioxidant 1010, 3-8 parts of amino-terminated polyether and 0.3-1 part of a hindered amine light stabilizer 770. The thermal insulation board is excellent in thermal insulation, mechanical property and flame retardant property, good in weather resistance, stable in size and high in construction adaptability, pearl wool can be recycled, and the thermal insulation board has practical and environment-friendly values.