294 results about "Vinyl ester" patented technology

The invention discloses an underground chamber structure of a compressed air energy storage power station, a construction method and a parameter optimization design method, and belongs to the field of compressed air energy storage and underground space engineering. A hard rock stratum building chamber is determined through systematic site selection investigation, a high-performance concrete lining (containing fiber reinforcement) and a polyurethane buffer layer are adopted to synergistically improve the stability, and a vinyl ester resin-based glass fiber reinforced plastic three-layer composite structure serves as a sealing layer (including a bonding layer, a reinforcement layer and an impermeable layer); the processes of sand blasting pretreatment, stepped joint and the like are combined to guarantee the sealing performance; meanwhile, on the basis of a finite element model, structural parameters are optimized by taking the lowest whole life cycle cost as a target and taking strength, deformation, leakage rate and the like as constraints, and a recommended parameter combination of each structural layer is obtained in combination with an orthogonal experimental design and an improved genetic algorithm. The method is suitable for various geological conditions, the safety, economical efficiency and adaptability of the compressed air energy storage power station are effectively improved, and the method is suitable for large-scale application and popularization.

The invention discloses a silica gel pad with high thermal conductivity and heat resistance and a preparation method thereof, and the method comprises the following steps: preparing a composite thermal conductive filler, mixing boron nitride nanosheets and graphene according to a certain mass ratio, adding a silane coupling agent, carrying out ball milling, adding spherical alumina, and mixing; preparing modified organic silicon resin, wherein methyl vinyl silicone rubber, hydrogen-containing silicone oil, a platinum catalyst and MQ silicon resin react to obtain the modified organic silicon resin; mixing and defoaming the modified organic silicon resin, the composite heat-conducting filler, the flame retardant and the antioxidant to obtain a heat-conducting silica gel mixture; preparing a reinforced base material, carrying out plasma treatment on glass fiber cloth, and then impregnating the glass fiber cloth with vinyl ester resin for pre-curing; and grinding the mixture by three rollers, coating the mixture on a reinforced base material, and heating and curing. The thermal conductivity of the obtained silica gel pad is 2.5-3.5 W / m.K, the volume resistivity is larger than 1012 omega.cm, the long-term heat-resistant temperature reaches 200 DEG C or above, the tensile strength is larger than 5 MPa, the peel strength is larger than 15 N / cm, and the silica gel pad has excellent thermal conductivity, insulativity, heat resistance and mechanical strength.

The invention relates to the technical field of photovoltaics, in particular to an anti-migration ultraviolet cut-off photovoltaic adhesive film and application thereof. The anti-migration ultraviolet cut-off photovoltaic adhesive film comprises matrix resin and an ultraviolet cut-off agent, the ultraviolet cut-off agent is a benzotriazole compound with a reactive double bond, and the reactive double bond is selected from one of an olefinic bond, an acrylate bond, a methacrylate bond or a vinyl ester bond; and the absorption wave band of the ultraviolet cut-off agent is 280 to 380 nm. Therefore, the anti-migration ultraviolet cut-off photovoltaic adhesive film has a good cut-off effect and an anti-migration effect and is not prone to yellowing, and a battery assembly adopting the photovoltaic adhesive film has a longer service life.

A sheet molding compound (SMC) composition formulation including a curable resin, such as unsaturated polyester of vinyl ester, in an ethylenically unsaturated monomer; a low profile additive, in a curable solvent; and an intumescent additive, such as melamine polyphosphate or ethylene diamine phosphate. An article formed of the SMC composition formulation experiences no more than a 100% increase in thickness as compared to an initial thickness of the article after exposure to a flame. The low profile additive is present in the composition and the intumescent additive is present in the composition. The resulting article has a char strength at 3 mm thickness of between 100 and 1,000 Newtons.

The invention relates to the technical field of protective films, in particular to a high-light-transmittance label protective film and a preparation method thereof.A multi-layer protective film formed by compounding a release film layer, an adhesive layer, a PET film and a protective layer is constructed; composite vinyl ester resin constructed by taking epoxy resin and acrylic acid as raw materials is subjected to toughening modification, and then a linear reactive diluent is compounded to construct a high-toughness protective layer which is resistant to high temperature and aging and can be photo-cured; long-chain alkane modified nano silicon dioxide is introduced into the protective coating, nano silicon dioxide is aminated by 3-aminopropyltriethoxysilane, and then 17-carbon monoisocyanate prepared by taking acetone, stearic acid, triphenylphosphine, sodium azide and N-chlorosuccinimide as raw materials is grafted to form the long-chain alkane modified nano silicon dioxide. Vinyl butadiene styrene rubber, composite vinyl ester resin, tackifying resin, a softening agent and a photoinitiator are mixed to prepare the adhesive layer.

The present invention relates to an agrochemical composition comprising an agrochemical active ingredient and a cleaning composition comprising a cleaning additive, each further comprising at least one novel graft polymer comprising a polymer main chain (A) as a graft matrix having grafted polymer side chains (B) thereon. The polymer side chain (B) is obtainable by polymerization of at least one vinyl ester monomer (B1) and optionally a further monomer. The polymer backbone (A) comprises a polyalkylene oxide-derived moiety and a moiety derived from a lactone and / or a hydroxy acid, which moieties are mixed such that the polymer backbone contains ester functional groups within the polymer chain. The graft polymers of the compositions of the invention have been found to be suitable as dispersants for pesticidal agents in agrochemical compositions, and also suitable in cleaning compositions for improving cleaning properties. In addition, the graft polymer typically exhibits a suitably high degree of biodegradability and thus allows for a more environmentally friendly formulation. The graft polymer itself and its production are also claimed.

The invention discloses a waterproof hot melt adhesive film for a TPO waterproof coiled material, a preparation method of the waterproof hot melt adhesive film and the TPO waterproof coiled material, and relates to the field of adhesive films for waterproof coiled materials. The waterproof hot melt adhesive film for the TPO waterproof coiled material comprises the following components in parts by weight: 100 parts of a base material, 0.2-1.0 part of an antioxidant and 0.2-1.0 part of an ultraviolet absorbent, the base material is prepared from 5-10 wt% of resin with an active unsaturated functional group, 25-50 wt% of rubber, 30-50 wt% of tackifying resin and 10-20 wt% of a softening agent, the resin with the active unsaturated functional group adopts at least one of aliphatic polyurethane acrylate with the functionality of 2-3 and vinyl ester resin, and the rubber comprises at least one of SIS (styrene-isoprene-styrene) rubber and SBS (styrene-butadiene-styrene) rubber. The waterproof hot melt adhesive film has heat aging resistance, ultraviolet aging resistance, flexibility and bonding stability, and the service life of the TPO waterproof coiled material is prolonged.

The invention discloses a multifunctional composite diaphragm for a sodium ion battery and a preparation method of the multifunctional composite diaphragm, and belongs to the technical field of electrochemical energy storage devices. The multifunctional composite diaphragm for the sodium ion battery prepared by the invention comprises a polymer matrix, an inorganic nanofiller and a sodium ion conduction accelerant, and the polymer matrix comprises at least one structural polymer and at least one synergistic polymer, the synergistic polymer is composed of a vinyl lactam polymer and a vinyl ester polymer according to a specific ratio, and the sodium ion conduction accelerator comprises at least one of soluble sodium salts. Through the synergistic effect of vinyl lactam and vinyl ester polymers, the adaptability of the structural polymer, the dispersity of the inorganic filler and the conduction efficiency of sodium ions are comprehensively optimized. The obtained composite diaphragm can simultaneously achieve the core functions of high electrolyte wettability, high thermal stability and efficient sodium ion conduction, and meets the multifunctional requirements of high-safety and high-performance sodium ion batteries.

The invention discloses a flame-retardant SMC (Sheet Molding Compound) material for a new energy storage box and a preparation method of the flame-retardant SMC material, and relates to the field of composite material preparation. The flame-retardant SMC material for the new energy storage box is prepared from the following components in parts by weight: 20-24 parts of epoxy vinyl ester resin, 14-20 parts of unsaturated polyester resin, 5-10 parts of benzoxazine resin, 12-18 parts of a phosphorus-nitrogen synergist, 5-8 parts of an inorganic flame retardant, 5-8 parts of a reinforcing agent and 1-3 parts of other auxiliaries. The phosphorus-nitrogen synergist comprises vinyl modified DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and amino modified DOPO, the inorganic flame retardant is prepared from expanded graphite and aluminum hydroxide, and the reinforcing agent is prepared from alkali-free glass fibers and nano magnesium hydroxide. The SMC material prepared by the invention is suitable for being safely used in various environments, and has high flame retardance and excellent mechanical properties.

The invention relates to the technical field of dispersing agents, and particularly discloses a polycarboxylic acid type dispersing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: polymerizing itaconic acid, 2-acrylamide-2-methylpropanesulfonic acid, glycidyl methacrylate, methyl styrene, gamma-methacryloxypropyltrimethoxysilane, the modified hybrid compound, vinyl 2-mercaptopropionate and allyl polyoxyethylene ether to obtain a polycarboxylic acid type dispersing agent; the dispersing agent has excellent dispersing performance and heat resistance, the dispersing agent is not prone to losing efficacy in the high-temperature vulcanization process in the rubber processing process, and when filler and rubber are mixed, the dispersing agent is firmly adsorbed on the surfaces of filler particles through multiple acting forces, so that the dispersing agent is not prone to losing efficacy, and the service life of the dispersing agent is prolonged. The dispersing performance of the filler and the interface bonding force with rubber are improved, so that the filler is uniformly distributed in the rubber, a stable dispersion system is formed, the mechanical property of vulcanized rubber is improved, and the processing fluidity is improved.

A radiation curable composition comprising at least one polymerizable compound and an adhesion promoter, characterized in that the adhesion promoter includes: —a polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrene, a maleimide, a vinyl ether and a vinyl ester; and—an adhesion promoting group containing at least one nitrogen containing five or six membered heteroaromatic ring.

The invention discloses high-flame-retardant vinyl ester resin and a preparation method thereof, and relates to the technical field of resin flame retardants, the high-flame-retardant vinyl ester resin comprises matrix resin, a release type flame retardant and an additive type flame retardant; the release type flame retardant comprises a phosphorus-containing polymer and a nitrogen-containing polymer; the additive flame retardant comprises a silicon-containing polymer; on the basis of a traditional polyester resin carrier formula, nitrogen, phosphorus and other bromine-free release type flame retardants are adopted and matched with a high-temperature cured additive type flame retardant to form crosslinking work during flame retardance, so that the flame retardant has the material strength after curing and does not generate uneliminated harmful substances.

The application discloses a production method of wood material surface metallic paint and belongs to the technical field of wood paint. The production method of the wood material surface metallic paint is characterized in that the scale-shaped metallic powder pigment is arranged in a multi-layer ordered superposition mode, a barrier layer is provided for corrosive medium, shrinkage residual stress is improved to avoid corrosion, the strength of the paint film is improved, the hardness of the paint film is high after solidification, the paint film is resistant to scratching, the vinyl ester resin and the polyurethane powder are mixed to improve the toughness of the paint film, the metallic powder is uniformly dispersed through the polyurethane powder, the defects caused by uneven dispersion such as color difference and local corrosion are reduced, the wood material can be applied to various wood materials such as solid wood, shaving board and fiber board, and the wood material can exhibit a luxurious and gorgeous visual effect, in addition, the wood material has excellent physical and mechanical properties, chemical resistance and weather resistance and the like, and is suitable for the surface treatment of various wood, shaving board and fiber board and can enhance the gloss, brightness and depth of the wood.

The present invention relates to polymer processing aid compositions for polyolefins, their methods of manufacture and articles made from the compositions as well as use of the compositions for the removal or reduction of sharkskin melt fracture or reduction in the formation of die lip build-up. Compositions of the present invention may also be substantially free of fluorine and in some embodiments substantially free of siloxane.

This disclosure relates to a process for producing a recyclable ethylene-vinyl ester polymer, specifically, a recyclable ethylene-vinyl acetate (EVA) copolymer, comprising reacting an EVA polymer having an irreversibly crosslinked structure with sorbitol, via a transesterification reaction, in the presence of a transesterification catalyst, to produce a recyclable ethylene-vinyl acetate vitrimer. The present disclosure also relates to a recyclable ethylene-vinyl acetate vitrimer prepared according to this process.

The invention discloses a light high-strength corrosion-resistant composite insulated electric pole and a preparation method thereof, and belongs to the technical field of power transmission facilities. The electric pole is of a conical hollow structure, and an inner tough layer, a structural layer and an outer protective layer are sequentially compounded on a wall layer from inside to outside. The inner tough layer is made of a hyperbranched polyester modified epoxy vinyl ester-glass fiber composite material, so that the electric pole is endowed with excellent bending resilience performance; the structural layer is made of S glass fiber and T700 carbon fiber hybrid reinforced epoxy resin, so that high strength and rigidity are ensured; the outer protective layer is a fluorinated polyurethane / boron nitride composite coating, and provides long-acting weather resistance, corrosion resistance and insulation protection. According to the invention, through collaborative design of multi-layer materials and an integrated forming process, light weight, high mechanical strength, excellent insulativity and recoverability after bending of the electric pole are realized, and the electric pole is suitable for electric power line construction in a harsh environment.

The present invention provides a thermosetting resin composition for electromagnetic wave shielding, a bulk molding compound, and a molded product thereof, which are excellent in fluidity, injection molding property, compression molding property, and in which a molded product excellent in electromagnetic wave shielding property can be obtained. The thermosetting resin composition for electromagnetic wave shielding is characterized by containing a thermosetting resin (A) containing an unsaturated polyester resin (a1) and a vinyl ester resin (a2), a low shrinkage agent (B), a thickening agent (C) containing acrylic resin particles (c1) and magnesium oxide (c2), a thermally conductive filler (D), and a reinforcing material (E).

The invention belongs to the technical field of functional coatings, and particularly relates to a static conductive coating for nonmetal and a preparation method of the static conductive coating. The coating is composed of modified Si-C fluorosilicone resin, conductive nickel powder, ethandiamide and multiple auxiliaries, the modified Si-C fluorosilicone resin is prepared through a double-grafting reaction of mercaptoethanol and vinyl trifluoroacrylate,-S-and-CF groups are introduced into molecules at the same time, and the polarity of the resin and the dispersity of the conductive nickel powder are remarkably improved. The oxadiamide as a polar small molecule synergist can promote the formation of a conductive network and enhance the interface bonding force. The surface resistivity of the obtained coating is about 2.8 * 10 omega / square, the static decay time is 0.38 s, the adhesive force reaches 5B, and the conductivity retention rate after wear resistance exceeds 97%. The coating has excellent static conductivity, adhesive force and environmental stability, is suitable for the surfaces of non-metal base materials such as ABS, PVC and polycarbonate, and can be widely applied to the fields of electronic equipment shells, rail transit interior trim parts, anti-explosion and anti-static terraces and the like.

The invention relates to the technical field of lithium ion battery key materials, in particular to a cross-linked polyacrylic acid / polyvinyl alcohol composite binder and a preparation method and application thereof. The binder is prepared by introducing N, N-dimethylformamide into a water-soluble acrylic monomer, an ethylenically-bond-containing acrylonitrile monomer and a vinyl ester monomer through ternary polymerization; n, N-methylene bisacrylamide (MBA) forms a rigid-flexible three-dimensional chemical cross-linked network, and then the rigid-flexible three-dimensional chemical cross-linked network and polyvinyl alcohol (PVA) construct an interpenetrating network (IPN) through hydrogen-bond interaction. The dual cross-linked network has the structural stability of chemical cross-linking and the dynamic adaptability of physical cross-linking, when the charging and discharging volume of the silicon-based negative electrode changes, stress is dissipated through network elastic deformation, meanwhile, interface bonding is strengthened through the ionic bond action of a lithium carboxylate group, active substance falling and electrode pulverization are inhibited, and the service life of the silicon-based negative electrode is prolonged. And the cycle life of the high-energy-density lithium ion battery is remarkably prolonged.

The invention discloses an epoxy vinyl ester resin anticorrosive paint and a preparation method thereof, and the epoxy vinyl ester resin anticorrosive paint at least comprises the following raw materials by weight: 100-120 parts of epoxy vinyl ester resin; 0.75 to 0.8 part of a curing agent; 0.012 part to 0.015 part of a catalyst; 3 to 10 parts of styrene; 20 parts to 30 parts of ethyl orthosilicate; 30 to 36 parts of ethanol; 50 to 80 parts of normal hexane; and 5 to 15 parts of silicon dioxide aerogel. The epoxy vinyl ester resin anticorrosive paint has stronger corrosion resistance in an extreme environment, and the mechanical property and the thermal stability are further improved.

The invention provides an anti-carbonization coating and a preparation method thereof, and relates to the field of coatings. The anti-carbonization coating is prepared from the following components in parts by weight: 32 to 38 parts of vinyl ester resin, 6 to 8 parts of rutile titanium dioxide, 8 to 12 parts of glass flake, 3 to 6 parts of mica powder, 1 to 3 parts of nano zirconium dioxide, 2 to 3 parts of nano silicon dioxide, 1 to 3 parts of modified boron nitride nano powder, 5 to 8 parts of styrene, 1 to 2 parts of methyl ethyl ketone peroxide and 1 to 2 parts of functional additive, according to the anti-carbonization coating provided by the invention, the sheet structures of the used glass flakes and boron nitride are synergistic, a permeation path is prolonged, the glass flakes and the boron nitride are jointly dispersed in resin, stress is absorbed through interlayer slippage, and crack propagation of a coating is reduced; under the combined action of gamma-aminopropyltriethoxysilane and octadecyltrimethoxysilane, dual functional modification is given to the boron nitride nanosheets, covalent bonds or hydrogen bonds are formed by the boron nitride nanosheets and polar groups in vinyl ester resin through chemical bonding, and the interface bonding force between filler and a matrix is enhanced.

The present invention provides fabric care compositions and related methods comprising a graft copolymer that can comprise (a) a polyalkylene oxide, such as polyethylene oxide (PEG); (b) N-vinyl pyrrolidone (VP); and (c) a vinyl ester, such as vinyl acetate. The invention also provides methods and uses associated with such compositions and / or graft copolymers.

The invention relates to the technical field of sizing agents, in particular to a modified epoxy vinyl sizing agent and a preparation method and application thereof, and the modified epoxy vinyl sizing agent comprises modified epoxy resin and water; based on the total weight of the sizing agent, the content of the modified epoxy resin is 1-1.5 wt%; the modified epoxy resin is selected from at least one of polymers with a structure as shown in a formula (1), and in the formula (1), n is an integer of 3-10. The structure of the modified epoxy vinyl sizing agent simultaneously contains a functional group capable of being cross-linked and cured with matrix resin and a functional group capable of being combined with carbon fibers, so that the interface performance of vinyl ester resin and the carbon fibers is improved, and the vinyl ester resin and the carbon fibers are tightly combined together by the sizing agent in the processing and forming process of a composite material; the composite material performance is improved.

The invention discloses an I-shaped mould pressing polymer workpiece and a preparation method thereof. The workpiece comprises a web, a first wing plate and a second wing plate, the first wing plate and the second wing plate are symmetrically parallel and are formed by compression molding of sheet molding compounds, pultrusion profiles are embedded in the web to enhance rigidity, and the parallelism of the wing plates is smaller than or equal to 0.5 mm. According to the preparation method, a pultrusion profile is coated with a material sheet of the sheet molding compound, then mold pressing is conducted, the mold pressing temperature is 120-140 DEG C, the pressure is 8-15 MPa, and the pressure maintaining time is calculated according to the thickness of a web. The formula of the sheet molding compound contains unsaturated polyester resin, epoxy vinyl ester resin and the like, and the glass fiber accounts for 30-40% of the total weight. The pultrusion profile is mainly made of unsaturated polyester resin, the fiber volume content is larger than or equal to 50%, and the surface is subjected to sand blasting or corona treatment. According to the workpiece prepared by the method, the bending strength is improved, the salt spray corrosion resistance is improved, the thermal deformation temperature is increased, and the problems of poor rigidity and low precision of a traditional sheet molding compound molded profile are solved.

The present invention aims to improve the bundling of inorganic fibers to which a sizing agent for inorganic fibers is attached, and to shorten the time for curing treatment when producing a fiber-reinforced resin composite. The sizing agent for inorganic fibers contains a resin (A) containing a vinyl ester resin and an ionic polyester resin, and the mass ratio of the vinyl ester resin to the ionic polyester resin is greater than 1.

This invention discloses an ethylene alcohol-vinyl acetate-medium-long alkyl carboxylic acid vinyl ester copolymer and its preparation method, belonging to the technical field of preparation of copolymers containing ethylene alcohol structural units. The copolymer has a number average molecular weight of 5,000 to 500,000 and is composed of ethylene alcohol-based structural units (a), vinyl acetate-based structural units (b), and medium-long alkyl carboxylic acid vinyl ester-based structural units (c). The preparation method provided by this invention has mild reaction conditions, simple operation, and is easy to industrialize.

The invention relates to a method for producing a particle foam molded part, comprising fusing coated foam particles by supplying energy at least in part by an electromagnetic field having a frequency in the range of 1 MHz to 100 MHz, wherein the coated foam particles comprise a polymer coating selected from the group consisting of an acrylic polymer, a styrene-acrylic polymer, a vinyl ester polymer, an ethylene vinyl ester polymer, a styrene butadiene polymer, a polyester polymer, a polyamide polymer, a polyolefin polymer, a polyurethane polymer, the invention relates to a polyurethane-polyacrylate hybrid polymer and a polyurethane-polystyrene-butadiene hybrid polymer. The invention also relates to the molded part obtained in this method and to the use thereof in soles, sole parts, midsoles, insoles, damping elements, cushioning elements, pads, grips, floors, mattresses, sporting goods, bicycle saddles, tires and in automotive interior and exterior trim parts.

Provided is a drilling mud additive that can provide a drilling mud composition that exhibits an excellent suppression of mud loss at high temperatures and an excellent fluidity and mud cake formation at high temperatures. Also provided is a drilling mud composition that uses this additive.　The present invention provides a drilling mud additive that contains a vinyl alcohol-based polymer that has a vinyl alcohol unit and a vinyl ester unit. This vinyl alcohol-based polymer has a saponification degree of at least 70 mol% and a viscosity-average degree of polymerization of 1000-5000. When a 0.1 mass% aqueous solution of the vinyl alcohol-based polymer is filtered across a membrane filter having a pore diameter of 0.45 μm, the amount of filtered water in 10 minutes is equal to or less than 100 g.