463 results about "Pentaerithrityl" patented technology

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 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 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.

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 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 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 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 provides an ocean engineering anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from the following raw materials: fluorocarbon resin, modified synthetic mica, modified basalt fibers, modified carbon nanotubes, nano silicon dioxide, nano zinc oxide, nano titanium dioxide, carbon fibers, zinc phosphate, hydroxyl-terminated polybutadiene, a plant extract, organic tin and the like. The modified synthetic mica and the modified carbon nanotubes are modified by adopting pentaerythritol stearate, cellulose nitrate and sodium hexametaphosphate; the modified basalt fiber is modified by adopting sodium stannate, polyvinyl alcohol and sodium hexametaphosphate; the plant extract is ethanol percolation extract of kandelia candel leaves and mangnolia officinalis leaves. All the components are used in a matched mode according to a certain proportion, and the advantages of being excellent in anti-corrosion performance, good in mechanical performance, excellent in anti-aging performance, environmentally friendly and the like are achieved.

The invention relates to the field of cosmetics, and discloses makeup fixing cream and a preparation method thereof. The makeup fixing cream comprises the following components in percentage by mass, comprising 3.0%-20% of diisostearyl malate, 0.5%-8.0% of microcrystalline wax, 0.5%-5.0% of petrolatum, 0.1%-3.0% of squalane, 0.1%-5.0% of pentaerythritol tetraisostearate, 30%-60% of polydimethylsiloxane, 3%-6% of polymethylsilsesquioxane, 15%-40% of modified silica and 3%-5% of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer. 15% of a silane coupling agent and 3-15% of a vinyl polydimethylsiloxane / polydimethylsiloxane cross-linked polymer; the modified silica is of a porous structure, and the surface of the modified silica is modified by polydimethylsiloxane. After being used, the makeup fixing cream has the characteristics of matte and soft-focus effects and good makeup maintaining and oil controlling effects.

The invention relates to the technical field of building, chemical engineering and energy heat preservation, and discloses a silicon-based aerogel composite material and a preparation method and application thereof. The invention relates to a light-emitting diode (LED) photo-curing agent, which is prepared from tetraethyl orthosilicate, methyltrimethoxysilane, allyltriethoxysilane, pentaerythritol tetra (3-mercaptopropionate), N-(3-(triethoxysilyl) propyl) furfuryl amine, N-(3-(triethoxysilyl) propyl) maleimide, a photoacid generator and a photoinitiator. The composite material has a three-dimensional porous silicon dioxide network skeleton and a polymer interpenetrating network, the three-dimensional porous silicon dioxide network skeleton is formed by copolymerization of tetraethyl orthosilicate and methyltrimethoxysilane, and the polymer interpenetrating network is formed by reaction of pentaerythritol tetra (3-mercaptopropionate) and allyltriethoxysilane. The preparation method comprises the steps of sol preparation, light curing, solvent replacement, surface hydrophobic modification and normal-pressure drying. The material shows excellent thermal insulation and mechanical properties in the fields of building heat insulation, pipeline heat preservation and cryogenic heat insulation.

The invention relates to the field of automobile clothing, and discloses an elastic base material for spraying an automobile clothing as well as a preparation method and application thereof, the elastic base material for spraying the automobile clothing comprises a polyurethane prepolymer, modified polydimethylsiloxane, a photoinitiator and an alcohol solvent; the polyurethane prepolymer is prepared from polycarbonate diol, modified fluorine-containing diol, isocyanate, 2, 2-dimethylolbutyric acid and modified nano silicon dioxide as raw materials, the modified fluorine-containing diol and the modified nano silicon dioxide are connected to a polyurethane main chain, pentaerythritol triacrylate is used as an end-capping reagent, and p-hydroxyanisole is used as a polymerization inhibitor, so that the polyurethane prepolymer is prepared. A polyurethane prepolymer and sulfydryl-terminated modified polydimethylsiloxane react under the action of a photoinitiator to form a heavy cross-linked network, so that the elastic base material is endowed with excellent mechanical properties, antifouling properties, thermal stability and flame retardance.

The invention belongs to the technical field of wind power generation blade filling materials, and particularly relates to a polyurethane foam filling material for a wind power generation blade and a preparation method and application of the polyurethane foam filling material. Wherein the component A comprises the following components: polyether polyol a, polyether polyol b, polyether polyol c, polyester polyol d, a viscosity reducer, a cross-linking agent, a foam stabilizer, a catalyst, chemical foaming agent water and an auxiliary agent; the component B is polymethylene polyphenyl polyisocyanate; the polyether polyol a is polyether polyol prepared by taking enzymatic hydrolysis lignin, pentaerythritol, trihydroxymethyl melamine and propylene glycol as initiators and carrying out a reaction; the polyether polyol b is polyether polyol which is prepared by taking bisphenol A and trimethylolpropane as initiators; the filling material prepared by the invention is safe, green and environment-friendly, has the advantages of low density, high strength, better process adaptability and excellent dimensional stability, and also can provide good weather resistance.

The invention relates to rosin modified resin and a preparation process thereof and low-odor printing ink, the rosin modified resin is prepared from maleic anhydride, sulfonate alkyd resin, rosin and a metal organic framework, and the sulfonate alkyd resin is prepared from neopentyl glycol, dibutyltin dilaurate, m-phthalic acid-5-sodium sulfonate, phthalic anhydride and pentaerythritol. The printing ink has the effect of improving the strength and smell of the printing ink.

The invention relates to high-adhesion weather-resistant water-based ink and a preparation process thereof, and relates to the field of ink materials and preparation, and the high-adhesion weather-resistant water-based ink is prepared from the following raw materials in parts by mass: 25-40 parts of waterborne polyurethane, 10-20 parts of waterborne acrylate, 35-50 parts of water-based color paste, 1-4 parts of auxiliaries and water; the water-based acrylate is obtained through emulsion polymerization, and polymeric monomers comprise epoxy acrylate, hydroxyethyl acrylate, pentaerythritol tetraacrylate and acrylic acid; the epoxy acrylate comprises fatty acid modified epoxy diacrylate. The preparation method comprises the following steps: adding the water-based polyurethane resin and the water-based acrylate into water, stirring, adding the water-based color paste, stirring, adding the auxiliary agent, stirring, adjusting the viscosity, stirring, and filtering to obtain the high-adhesion weather-resistant water-based ink. The water-based ink has the effect of improving the adhesive force and weather resistance of the water-based ink.

The invention belongs to the field of intelligent materials, and discloses a nematic phase liquid crystal elastomer fiber and a method for optimizing the thermal shrinkage performance of the nematic phase liquid crystal elastomer fiber. According to the method, the mass ratio of a cross-linking agent pentaerythritol tetra (3-mercaptopropionate) (PETMP) to a chain extender 2, 2 '-[1, 2-ethanediyl bis (oxygen)] bis (ethanethiol) (EDDET) in an LCE spinning solution is accurately controlled through a wet spinning technology, and drafting and heat treatment processes are combined, so that the LCE fiber with adjustable and controllable heat shrinkage performance and mechanical performance is prepared. The invention aims to overcome the limitations of low response speed, low shrinkage rate, insufficient environmental stability and the like of the existing LCE fiber. The reversible thermal shrinkage rate of the fiber can reach up to 35%, the maximum shrinkage deformation can be completed within 2 seconds at the soonest at the temperature of 80 DEG C, and the maximum tensile strength can reach 170 MPa. And the catalyst has excellent oxidation stability (the mass retention rate is about 97%), and can maintain efficient thermal response in a water environment. And a new way is provided for development of high-performance intelligent materials.

The invention discloses a modified carbon fiber and a preparation method thereof and a carbon fiber reinforced composite material, and belongs to the technical field of composite material interface modification.The preparation method of the modified carbon fiber comprises the following steps that after the surface of the carbon fiber is treated, the carbon fiber is mixed with dopamine, the mixture is added into a buffer solution for ultrasonic treatment, and the carbon fiber is obtained; the dopamine modified carbon fiber is obtained; the preparation method comprises the following steps: dispersing dopamine modified carbon fibers in an organic solvent containing polyvinylpyrrolidone, then sequentially adding pentaerythritol tetra-3-mercaptopropionate and isophorone diisocyanate, and carrying out a reaction so as to obtain the modified carbon fibers. The prepared modified carbon fiber is high in strength retention and free of obvious surface defects, and the modified carbon fiber and epoxy resin can be prepared into a carbon fiber reinforced composite material with improved interface strength and mechanical properties.

The invention discloses a self-repairing composite floor for a clean room and a preparation method of the self-repairing composite floor, and the preparation method comprises the following steps: carrying out amination treatment on nano silicon dioxide and carbon quantum dots by using a silane coupling agent, and sulfonating polyethersulfone ketone by using concentrated sulfuric acid; the preparation method comprises the following steps: carrying out curing treatment on epoxy resin, an amine curing agent, N-hydroxyethyl maleimide and tetrakis (3-mercaptopropionic acid) pentaerythritol ester to obtain epoxy-mercaptan resin; the preparation method comprises the following steps: carrying out prepolymerization reaction on vacuum dehydrated polyester polyol, tetrahydroxyethyl ethylenediamine, furanpropanol, diisocyanate, a catalyst, 2, 2 '-thiodiethanol and hydroxyl silicone oil to obtain a star-shaped polyurethane prepolymer, adding epoxy-thiol resin, glyceryl borate, sulfonated polyethersulfone ketone, aminated silicon dioxide, aminated carbon quantum dots and an auxiliary agent, carrying out ultrasonic treatment, and carrying out drying to obtain the star-shaped polyurethane resin. The self-repairing coating material is obtained; and coating the self-repairing coating material on the surface of a base plate, and performing hot-pressing curing molding to obtain the self-repairing composite floor for the clean room.

The invention discloses an anti-aging and anti-yellowing foaming polyester material and a preparation method thereof, and relates to the technical field of polyester materials. The anti-aging and yellowing-resistant foamed polyester material is prepared from the following raw material components in parts by weight: 3 to 5 parts of anti-ultraviolet SEBS (Styrene-Ethylene-Butylene-Styrene), 3.6 to 7 parts of triethylamine, 4 to 6 parts of flame-retardant and wear-resistant filler, 100 parts of TPEE (Thermoplastic Polyether Ester Ether), 0.9 to 1.1 parts of polymer wax and 0.6 to 0.8 part of foaming agent, the anti-ultraviolet SEBS is obtained by copolymerizing and grafting an unsaturated benzophenone ultraviolet absorbent, SEBS and maleic anhydride; the flame-retardant and wear-resistant filler is obtained by mixing and reacting carboxylated nano silicon dioxide, pentaerythritol and phosphorus oxychloride; the polymer wax adopts EVA (Ethylene Vinyl Acetate) wax; azodicarbonamide is adopted as the foaming agent; the anti-aging and anti-yellowing foaming polyester material disclosed by the invention is relatively good in mechanical property, anti-aging property, flame retardant property and compression resistance.

The invention discloses a regenerated polypropylene composite material, which comprises the following components: 90-97 parts of regenerated polypropylene; 0.3 to 0.8 part of nano porous silicate; 3-8 parts of a toughening / transparent agent; 0.05 to 0.2 part of an anti-precipitation agent; and the anti-precipitation agent is selected from bis (2, 6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate ester. By adding the nano-porous silicate with specific parameters, the odor of the regenerated polypropylene can be effectively adsorbed, the dissolved substance can be reduced, and the transparency cannot be obviously reduced; meanwhile, the anti-precipitation agent can improve the formation of impurities in the processing process, and the impurities are precipitated on the surface, so that the haze is remarkably reduced, and the light transmittance is improved; furthermore, by selecting a toughening / transparent agent, not only can the toughness be improved, but also the transparency of the regenerated polypropylene composite material can be improved, and compared with other types of toughening agents, xylene soluble substances can be further reduced. The regenerated polypropylene composite material provided by the invention has the advantages of qualified dissolved substance detection, high transparency, low odor and good toughness.

The invention provides an expanded carbon layer reinforced water-based fireproof coating as well as a preparation method and application thereof, and belongs to the technical field of fireproof coatings. By combining the high dispersibility and high-temperature-resistant stability of modified titanium dioxide, the gas-phase / condensed-phase flame-retardant effect of phosphorus-containing phytic acid and the ceramifiable ability of boron / silicon compounds, the high-performance and environment-friendly expanded carbon layer reinforced water-based fireproof coating is developed on the basis of a traditional'ammonium polyphosphate-pentaerythritol-melamine 'expanded flame-retardant system. A coating sample prepared from the water-based fireproof coating can form a high-quality expanded carbon layer during combustion, is high in density, still keeps a complete structure under severe conditions such as high temperature and spray combustion, can provide long-term stable fireproof protection for a base material, can effectively inhibit release of combustible gas and flue gas particles, and improves the practical application value.

The invention belongs to the technical field of synthetic ester, and particularly relates to a preparation method of fatty acid pentaerythritol ester base oil, which comprises the following steps: carrying out esterification reaction on pentaerythritol and fatty acid in the presence of a catalyst and a color retention agent, and carrying out post-treatment to obtain the fatty acid pentaerythritol ester base oil, the catalyst comprises at least one of stannous octoate, stannous oxalate, stannous oxide, tetrabutyl titanate, isopropyl titanate and sodium hydrogen sulfate; the color retention agent comprises at least one of sodium hypophosphite, hypophosphorous acid, activated carbon and sodium sulfite. The color retention agent sodium hypophosphite is matched with the specific catalyst such as stannous oxalate, so that the petroleum color number of the produced fatty acid pentaerythritol ester base oil is smaller, and meanwhile, the esterification reaction time is shorter.

The invention relates to the technical field of cable materials, and particularly provides a composite flame-retardant cable material and a preparation method thereof, and the composite flame-retardant cable material comprises the following components: matrix resin: 50-70 parts of ethylene-vinyl acetate copolymer; a composite flame retardant system: 15 to 25 parts of ammonium polyphosphate / pentaerythritol and 5 to 10 parts of Mg / Al-LDH; and the synergistic smoke suppressant is 1-3 parts of a compound compounded by zinc borate and silicon dioxide according to the mass ratio of 1: 1. Through the synergistic effect of an ammonium polyphosphate / pentaerythritol intumescent flame retardant system and Mg / Al-LDH, a gas phase-condensed phase dual flame retardant mechanism is formed, and when the total addition amount of the flame retardant is smaller than or equal to 35%, the composite system can reach the UL-94 V-0 level, the limit oxygen index (LOI) is larger than or equal to 32%, and the composite system is remarkably superior to a traditional single flame retardant system.

The invention relates to a halogen-free flame-retardant rubber conveying belt and a preparation method thereof, and belongs to the field of rubber composite materials. The conveying belt comprises the following raw materials in percentage by mass: 55-65% of a rubber matrix (20-50nm EPDM / SBR blend), 5-10% of microencapsulated red phosphorus (the particle size is less than or equal to 10 microns), 12-15% of modified magnesium hydroxide, 4-6% of a pentaerythritol / melamine cyanurate compounded charring agent, 5-10% of a zinc molybdate / zinc borate compound (the mass ratio is 3: 1) and 3-8% of a maleic anhydride compatibilizer. The halogen-free, environment-friendly and high-flame-retardant performance is achieved, meanwhile, the tensile strength is kept to be larger than or equal to 16 MPa, and the problems that a traditional flame-retardant belt is large in toxicity and poor in mechanical property are solved.

The invention discloses a drag reduction composition, a preparation method thereof and a pipeline drag reducer. The drag reduction composition comprises the following components in parts by mass: 10-21 parts of a polymethacrylate compound, 6-18 parts of a dispersing agent and 2-9 parts of a lubricating agent, the lubricant is prepared from one or more of glycerol triacetate, glycerol tripropionate, pentaerythritol tetraacetate and dipentaerythritol hexaacetate. The drag reduction composition provided by the invention comprises the polymethacrylate compound matched with the dispersing agent and the specific lubricant, and the components jointly form a suspension system with stable properties, so that the degree of freedom of motion among polymer molecules can be increased, and the occurrence of an agglomeration phenomenon is reduced. When the drag reduction composition is added into a pipeline containing crude oil or product oil, polymer molecules can be stretched, folding and curling phenomena of the polymer molecules can be reduced, and a good drag reduction effect can be quickly achieved.

The invention relates to the technical field of cable sheath preparation, and discloses a cable sheath which comprises the following components in parts by weight: basic rubber materials: vinyl-terminated methyl vinyl silicone rubber and crosslinked polyethylene; the synergistic flame-retardant system is prepared from zinc borate, ammonium polyphosphate, melamine, pentaerythritol and composite modified nano montmorillonite; the nano composite additive is prepared from nano silicon dioxide, nano zinc oxide, nano boron nitride and graphene; an interface compatilizer: maleic anhydride grafted polyethylene; according to the invention, through component optimization and synergistic cooperation, on the premise of not depending on a halogen flame retardant, high flame retardance, excellent mechanical properties and stable aging resistance are realized at the same time, and strict requirements of high-end cables on safety and reliability are met. Besides, the material preparation process is simple and controllable, is suitable for large-scale production, and can be widely applied to the fields of high-rise buildings, rail transit, new energy and the like with high requirements on the performance of the cable sheath.

The invention relates to the field of corrosion-resistant coatings, and discloses a corrosion-resistant coating and application of the corrosion-resistant coating in an aluminum alloy heat exchange tube, the corrosion-resistant coating comprises waterborne epoxy resin, modified silicon dioxide nanotubes, modified composite filler and auxiliaries; the modified silicon dioxide nanotube is prepared by carrying out acylating chlorination on a silicon dioxide nanotube by using 4-isocyanobenzoyl chloride and then reacting with an amination modifier; the amination modifier is prepared by synthesizing spirocyclic phosphate diacyl chloride by using pentaerythritol and phosphorus oxychloride, and then carrying out substitution on 2-aminobenzimidazole, 3, 5-diamino-1, 2, 4-triazole and the spirocyclic phosphate diacyl chloride; the modified composite filler is prepared by forming a polydopamine layer on the outer surface of mica through auto-polymerization of dopamine, then wrapping the outer layer of dopamine modified mica with zinc oxide through a sol-gel method and high-temperature calcination, and then modifying with KH550. The coating prepared by the invention has good mechanical properties, corrosion resistance, heat insulation performance, flame retardant effect and antibacterial effect.

The invention discloses a slurry formula for preparing AlN-based ultrathin precise porous structure ceramic for an electrostatic chuck through photocuring 3D printing and a printing method of the slurry formula, and the slurry is prepared by adopting three resins of o-phenyl phenoxyethyl acrylate, 1, 6-hexanediol diacrylate and ethoxylated pentaerythritol tetraacrylate according to a formula ratio of 5: 3: 2. The curing depth of the photocuring 3D printing AlN porous structure ceramic slurry can be obviously improved under the condition that the solid content is 50%. And printing of a high-precision and defect-free AlN ultrathin precise porous structure ceramic body is facilitated. Furthermore, in combination with reasonable selection of the sintering temperature, the AlN ultrathin precise porous structure ceramic applied to the electrostatic chuck can be obtained.

The present invention belongs to the technical field of synthesizing and preparing organic polymer optical materials, and specifically relates to a method for preparing a pentaerythritol tetramercaptocarboxylate composition. The method comprises the following two steps: first, an addition reaction of thiourea with acrylic acid under photocatalysis to generate mercaptopropionic acid in situ; and second, a lipase-catalyzed esterification reaction of mercaptopropionic acid with pentaerythritol to obtain colorless, transparent, high-purity pentaerythritol tetramercaptocarboxylate. Simultaneously, a polymerizable modified polyurethane optical material containing the pentaerythritol tetramercaptocarboxylate is prepared, characterized by low cost, high light transmittance, and adjustable refractive index.

The invention discloses a bi-component microcapsule self-repairing epoxy resin composite material as well as a preparation method and application thereof, the bi-component microcapsule self-repairing epoxy resin composite material is of a core-shell structure, epoxy resin and pentaerythritol tetra (3-mercaptopropionate) are taken as a core, and the outer layer is coated with polymethyl methacrylate. In the aspect of tensile property, the tensile strength of the epoxy resin composite material is in a trend of firstly increasing and then decreasing along with the increase of the microcapsule content from 0 wt%. Due to the fact that the microcapsules with the thermoplastic polymethyl methacrylate as the shell are added, the overall tensile property of the material is improved; the microencapsulated repairing agent not only can heal cracks, but also can provide higher fracture toughness for the damaged part of the epoxy resin composite material.