679 results about "Vinyl ether" patented technology

A fluoroelastomer production method including a step in which monomers A comprising a compound represented by CX1X2=CX3-L-Z, a cyano-group-containing monomer, and at least one compound selected from the group consisting of tetrafluoroethylene, fluorine-containing vinyl ethers, and fluorine-containing allyl ethers are polymerized in an aqueous medium under conditions that substantially no fluorine-atom-containing emulsifier is present.

The invention provides a perfluoroether rubber sealing element and a preparation method thereof, and the preparation method comprises the following steps: taking tetrafluoroethylene and perfluoroalkyl vinyl ether as comonomers, and carrying out emulsion polymerization under the condition of a vulcanization point monomer and a chain transfer agent to obtain raw perfluoroether rubber; the preparation method comprises the following steps: mixing the raw perfluoroether rubber, the carboxyl fluorinated modified carbon nanotubes, a filler, a vulcanizing agent and an accelerant, and performing first-stage vulcanization and second-stage vulcanization to obtain the perfluoroether rubber sealing element. According to the perfluoroether rubber sealing element and the preparation method thereof provided by the invention, the compressive deformation resistance of the perfluoroether rubber sealing element is improved by adding the carboxyl fluorinated modified carbon nanotubes, so that the sealing element is ensured to meet the sealing requirement of semiconductor equipment.

The invention discloses a preparation method of high-efficiency fusible polytetrafluoroethylene (PFA), and relates to the technical field of fluorine-containing polymers. The preparation method comprises the following specific steps: adding high-purity water into a polymerization kettle, starting stirring, adding a surfactant, a dispersing aid, a chain transfer agent and a perfluoroalkyl vinyl ether monomer, controlling the temperature and pressure of the polymerization kettle, adding an initiator solution into the reaction kettle, and initiating a copolymerization reaction; the preparation method comprises the following steps: continuously adding a gas mixture of tetrafluoroethylene and perfluoroalkyl vinyl ether into a polymerization kettle after a polymerization reaction is started, continuously adding an initiator solution into a reaction kettle at a constant speed at the same time, and recovering unreacted monomers in the polymerization kettle after the reaction is finished to obtain a fusible polytetrafluoroethylene (PFA) resin emulsion. The method overcomes the problem of low polymerization efficiency caused by low filling coefficient and long solvent recovery period of the original solvent phase PFA polymerization reaction, and improves the utilization rate of raw materials.

The invention discloses a high-safety temperature-responsive electrolyte, a lithium ion battery and a sodium ion battery, the high-safety temperature-responsive electrolyte comprises a thermal response solvent, a cosolvent and an electrolyte salt, the thermal response solvent is a thermal response polymer monomer, the thermal response polymer monomer has at least one of the structures of vinyl ether, divinyl ether, dialkenyl amide and dialkenyl butanediimine, the thermal response polymer monomer can quickly form a polymer solid electrolyte under the catalysis of an initiator salt in electrolyte salt under a high-temperature condition, and the fixation of the solid electrolyte enables a diaphragm in a battery not to collapse, so that the battery diaphragm can be used as a lithium ion battery diaphragm. Therefore, short circuit caused by thermal shrinkage and fusion of the diaphragm is avoided, and thermal runaway is avoided. The electrolyte can be used for preparing the lithium-ion and sodium-ion battery, and the lithium-ion and sodium-ion battery can keep a relatively high capacity retention rate while giving consideration to the safety performance.

The invention relates to a fluorine-containing binder for a sulfide all-solid-state battery and a preparation method and application thereof.The binder is formed by copolymerizing isoprene and lithium perfluorovinyl ether sulfonate, specifically, the lithium perfluorovinyl ether sulfonate, a chelating agent, an emulsifying agent, ferrous sulfate, a reducing agent and an acid-base buffering agent are dissolved in water, cooling is conducted in the inert atmosphere, and the fluorine-containing binder for the sulfide all-solid-state battery is obtained. And adding isoprene, an initiator and a molecular weight regulator, and carrying out polymerization reaction to obtain the fluorine-containing binder. The isoprene can enhance the solubility of the lithium perfluorovinyl ether sulfonate fragment in the non-polar solvent, so that the whole polymer is dissolved in the non-polar solvent; the perfluorovinyl ether lithium sulfonate has a large space proportion of fluorocarbon groups, and has a shielding effect on hydrocarbon groups on isoprene, so that the stability of the whole polymer can be improved. The fluorine-containing binder prepared by the preparation method disclosed by the invention is a binder with high elasticity, high ionic conductivity and high stability.

The invention relates to the technical field of architectural glass coatings, and discloses a functional coating for architectural glass and a preparation method of the functional coating. Comprising the following raw materials in parts by weight: 40-60 parts of water-based acrylic resin emulsion, 0.4-0.6 part of a defoaming agent, 5-15 parts of modified nano zinc oxide, 0.3-0.5 part of a flatting agent, 1.5-2.5 parts of a coalescing agent, 3-5 parts of a curing agent, 2-4 parts of a dispersing agent, 30-45 parts of deionized water and 3-5 parts of a thickening agent. An alternating structure formed by copolymerization of alkenyl ether (ester) and fluorine-containing ethylene is grafted on the surface of nano-zinc oxide, so that the surface of the nano-zinc oxide has fluorine-containing chain segments, and the excellent hydrophobic property of the chain segments and the antistatic capacity of the nano-zinc oxide cooperate with each other, so that the coating has super-hydrophobic property and self-cleaning capacity; the compatibility of the modified nano-zinc oxide and the coating is remarkably improved, and meanwhile, the nano-zinc oxide has a shielding effect on ultraviolet rays in long and medium wave bands, so that a coating film formed by curing the coating has excellent anti-ultraviolet performance.

The invention discloses a high-strength moisture-proof gypsum board and a preparation method thereof, and relates to the technical field of gypsum board preparation. The high-strength moisture-proof gypsum board is prepared by dipping the surface paper in the composite dipping liquid and then pouring the surface paper and the gypsum core with the waterproof agent, the composite dipping liquid comprises the methoxy vinyl ether copolymer and the epoxy polyoxymethylene dimethyl ether, and the methoxy vinyl ether copolymer is 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate. According to the present invention, epoxy polyoxymethylene dimethyl ether is prepared by reacting 2, 4-dimethoxymethoxyphenylacetic acid with 2-hydroxyethyl vinyl ether, and the epoxy polyoxymethylene dimethyl ether is prepared by terminating polyoxymethylene dimethyl ether with allyl and then reacting with phthalimide hexperoxy acid, such that the waterproofness and the mechanical property of the gypsum board are improved; the waterproof agent is prepared by reacting hydrogen-containing silicone oil and fluorine-containing hyperbranched amide polyurea urethane, so that the moisture resistance and bonding strength of the gypsum board surface paper are enhanced, and additional mechanical support is provided for the gypsum board.

The invention relates to the technical field of polymer composite materials, and discloses a nano-ceramic-based composite insulating coating and a preparation method thereof, and the coating is prepared from a composite resin matrix, a composite functional ceramic filler, a double-reactivity organosilicon linker and an initiator. Wherein the composite resin matrix is composed of vinyl-terminated polydimethylsiloxane and a vinyl ether functionalized fluorocarbon copolymer, and a soft and rigid interpenetrating network structure is formed. The composite functional ceramic filler is prepared from needle-shaped silicon nitride, flaky hexagonal boron nitride, nano silicon dioxide, nano cerium oxide and nano barium titanate. According to the invention, a chemical bonding interface is constructed between the inorganic filler and the organic resin, and the synergistic effect of the composite matrix and the multifunctional filler is optimized, so that the coating has excellent adhesive force, flexibility and thermal shock resistance, obtains high volume resistivity and breakdown strength, and meets the insulation protection requirements under harsh working conditions.

The invention belongs to the technical field of oilfield auxiliaries, and particularly relates to an oil-soluble demulsifier for a heavy oil field and a preparation method of the oil-soluble demulsifier. The oil-soluble demulsifier for the heavy oil field, provided by the invention, is prepared from a block polymer emulsion, nonylphenol polyoxyethylene ether, modified nanoparticles and a cross-linking agent. According to the invention, methoxystyrene, dodecyl vinyl ether, N, N-dimethylaminopropyl acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are adopted to prepare a quaternary block comb-shaped polymer, the quaternary block comb-shaped polymer and nonylphenol polyoxyethylene ether are subjected to molecular-level cross-linking through a cross-linking agent, nano modified particles are added, and the quaternary block comb-shaped polymer is prepared. The prepared demulsifier can be rapidly adsorbed on an oil-water interface and respectively adsorb an oil phase and a water phase, so that the tension of the oil-water interface is reduced, rapid separation of the oil phase and the water phase is realized, and the demulsification performance is improved.

The invention provides a temperature-resistant and salt-resistant wall-fixing agent for a water-based drilling fluid for a myriameter deep well as well as a preparation method and application of the wall-fixing agent, and belongs to the technical field of drilling. The preparation method of the wall fixing agent comprises the following steps: adding acrylic acid into deionized water, adjusting the pH value of a system to 7.0, then sequentially adding N-hydroxymethyl acrylamide, N-[2-(3, 4-dihydroxyphenyl) ethyl]-2-acrylamide, an emulsifier, octadecyl vinyl ether and a complexing agent into the system, and shearing to obtain a monomer solution; adding an initiator into the monomer solution, and reacting; and after the reaction is completed, washing, drying and crushing to obtain the wall fixing agent. The wall fixing agent can resist the temperature of 200 DEG C, can resist the salt to be saturated, has strong adsorbability and high cohesion, and can effectively adsorb, block and bond micropores and micro cracks of rocks, so that the rocks are solidified, the well wall stability is effectively enhanced, drilling fluid leakage is prevented, and a technical guarantee is provided for safe and efficient drilling of deep wells.

The application provides a temperature-resistant and salt-resistant wall stabilizer for a ten-thousand-meter deep well water-based drilling fluid and a preparation method and application thereof, and belongs to the technical field of drilling. The preparation method of the wall stabilizer comprises the following steps: acrylic acid is added into deionized water, the pH of the system is adjusted to 7.0, then N-hydroxymethyl acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, an emulsifier, octadecyl vinyl ether and a complexing agent are sequentially added into the system, shearing is performed, a monomer solution is obtained, an initiator is added into the monomer solution, and reaction is performed; after the reaction is completed, washing, drying and crushing are performed, and the wall stabilizer is obtained. The wall stabilizer has a temperature resistance of 200 DEG C and a salt resistance of saturation, has strong adsorption and high cohesion, can effectively adsorb, plug and cement micro-pores and micro-cracks of rocks, thereby consolidating the rocks, effectively enhancing the well wall stability, preventing drilling fluid leakage and providing technical support for safe and efficient drilling of deep wells.

This anticorrosive coating composition comprises a main agent (I) and a curing agent (II), wherein: the main agent (I) contains an epoxy resin (a); the epoxy resin (a) contains at least one of a bisphenol A epoxy resin (a-11) and a novolac epoxy resin (a-12) each having a weight average molecular weight of 6,000-12,000; the curing agent (II) contains a polyamine (b) and an alkylphenol (c); the polyamine (b) contains an alicyclic polyamine (b-1) having a cyclic aliphatic hydrocarbon group to which an amino group is bonded and contains a non-alicyclic polyamine (b-2) having no cyclic aliphatic hydrocarbon group to which an amino group is bonded; at least one of the main agent (I) and the curing agent (II) includes a vinyl-based defoaming agent (d) that has a constituent unit derived from at least one monomer selected from the group consisting of alkyl (meth)acrylates, alkyl vinyl ethers, and olefins and that has a number average molecular weight of 30,000-100,000 or 300,000-2,000,000; the content of the alicyclic polyamine (b-1) is 30%-80% by mass of the solid content of the curing agent (II); the content of the non-alicyclic polyamine (b-2) is 2%-45% by mass of the solid content of the curing agent (II); the content of the alkylphenol (c) is 5%-60% by mass of the solid content of the curing agent (II); and the content of the vinyl-based defoaming agent (d) is 0.005-3 parts by mass with respect to 100 parts by mass of the anticorrosive coating composition.

The invention discloses perfluoroether rubber as well as a preparation method and application thereof. The perfluoroether rubber has an A1-B1-A2-B2 block structure, and the block A1, the block B1, the block A2 and the block B2 are respectively and independently obtained by polymerizing tetrafluoroethylene and perfluoroalkyl vinyl ether; the molar percentage content of the perfluoroalkyl vinyl ether in the block B1 or the block B2 is higher than the molar percentage content of the perfluoroalkyl vinyl ether in the block A1 and is also higher than the molar percentage content of the perfluoroalkyl vinyl ether in the block A2; the molar percentage content of the perfluoroalkyl vinyl ether in the block B2 is higher than the molar percentage content of the perfluoroalkyl vinyl ether in the block B1. The perfluoroether rubber provided by the invention has an A1-B1-A2-B2 four-block structure, realizes progressive transition of rigidity-flexibility-rigidity-super-flexibility, reduces compression set, prolongs the service life of a plasma environment, has high thermal decomposition temperature, and can be used for a long time at 300 DEG C or above.

The invention discloses porous cyclodextrin microspheres loaded with nano-silver as well as a preparation method and application of the porous cyclodextrin microspheres. The porous cyclodextrin microspheres are obtained by loading nano-silver on oligomeric cyclodextrin with the molecular weight of 8000-14000, then blending the oligomeric cyclodextrin with poly (methyl vinyl ether-alt-maleic acid) to obtain microspheres and then cross-linking the microspheres. The porous cyclodextrin microspheres are selected as the carrier of AgNP, and cyclodextrin has a hydrophobic cavity, so that specific hydrophobic molecules and pollutants can be included in the cavity, and contact and catalysis processes of reactants and silver particles are promoted synergistically. Moreover, the cyclodextrin microspheres have micron-scale and even millimeter-scale porous structures, the abundant porous structures can ensure that reactants quickly enter the microspheres to be in full contact with silver, the catalytic reaction is efficiently carried out, and meanwhile, the larger size of the microspheres ensures that fluid can pass through the microspheres at a high speed in a fixed bed reactor, so that the catalytic efficiency is improved. And the contradiction between the catalyst efficiency and the large particle size in practical application is solved.

The invention provides perfluoroether fluororubber as well as a preparation method and application thereof. The perfluoroether fluororubber is in an A-B-A block form; the A block is formed by polymerizing tetrafluoroethylene and perfluoropropyl vinyl ether, and the molar ratio of the tetrafluoroethylene to the perfluoropropyl vinyl ether is (65 to 80): (20 to 35); the block B is formed by polymerizing tetrafluoroethylene and perfluoromethyl vinyl ether, and the molar ratio of the tetrafluoroethylene to the perfluoromethyl vinyl ether is (35-55): (65-45); and the mass fraction of the block B in the perfluoroether fluororubber is 50%-80%. The perfluoroether fluororubber has excellent high temperature resistance, can resist the high temperature of 320 DEG C, has excellent elongation, and is low in hardness, small in compression deformation and good in medium resistance and processability.

The present invention discloses an adiponectin detection kit and a preparation method thereof, wherein the adiponectin detection kit comprises an R1 reagent and an R2 reagent; the R1 reagent comprises the following components: a buffer solution, an electrolyte, a fusogen, a surfactant and a preservative; the R2 reagent comprises the following components: anti-adiponectin monoclonal antibody coated latex particles, a buffer solution, a protective agent, a stabilizer, a preservative and a surfactant; wherein the surfactant is selected from one or two of Tetronic 1307 and castor oil polyoxyethylene ether. The kit of the present invention not only enhances the anti-interference ability of the reagent to special samples such as chyle and lipid turbidity samples, reduces the interference of nonspecific adsorption, improves the accuracy of sample testing, but also enhances the repeatability and stability of the latex reagent by adopting a new surfactant combination in combination with other components in the kit.

The invention belongs to the technical field of coatings, and provides an environment-friendly solvent-free coating composition for a metal surface and a preparation method of the environment-friendly solvent-free coating composition. According to the coating composition, through the synergistic effect of the fluorine-containing polymer, the fluorinated polyester and the modified polyurethane, the corrosion resistance and the environmental stability of a coating are improved. Firstly, perfluoromethyl vinyl ether and triethanolamine react under the action of a catalyst to prepare a fluorine-containing polymer, and a three-dimensional cross-linked network structure of the fluorine-containing polymer endows a coating with hydrophobicity and chemical inertness; secondly, fluorinated polyester is prepared through free radical polymerization, and the surface energy is reduced through a perfluorinated chain segment; finally, modified polyurethane is prepared through polycaprolactone glycol, single-terminal dihydroxyl polydimethylsiloxane and the like, the surface energy is reduced through a silicon-oxygen chain segment of the modified polyurethane, and the oxidation resistance is improved through a thioether bond. The coating composition shows excellent water resistance, oxidation resistance and chemical corrosion resistance, has excellent mechanical property and adhesive force, and is suitable for protecting a metal substrate in a severe environment for a long time.

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 8.6 to 11.9% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.5 to 1.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.6 to 14.4 g / 10 min, and a total number of —CF2H, a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.

The invention relates to a mud-resistant slump-retaining polycarboxylic acid water reducer and a preparation method thereof. The polycarboxylic acid water reducer is prepared from the following raw materials: 80-100 parts of polyether macromonomer; 1-2 parts of a rigid unsaturated monomer; 1-2 parts of a crosslinking monomer; 2-3 parts of an unsaturated sulfonic acid monomer; 10 to 15 parts of unsaturated acid; 0.5-2 parts of an oxidizing agent; 0.5-2 parts of a reducing agent; and 1-2 parts of a chain transfer agent. According to the invention, ethylene glycol monovinyl ether polyoxyethylene ether is adopted as a polyether monomer, a cross-linking monomer itaconic acid polyethylene glycol ester is introduced to form a cross-linked network-shaped molecular structure, and rigid structures such as (4-vinyl phenyl) trimethoxysilane are introduced, so that friction layer adsorption of clay is avoided, adsorption sites on the surface of the clay are reduced, and the adhesion of the clay is improved; the competitive adsorption effect of clay on the polycarboxylate superplasticizer is weakened, and the mud resistance and the slump loss resistance are greatly improved.

The invention relates to the technical field of packaging of organic light-emitting devices, in particular to a photocuring composition for packaging an organic light-emitting device, a packaging structure and a display device. The light-cured composition comprises a light-curable vinyl ether monomer, a light-curable diluting monomer and an initiator; the molecular structure of the photocurable vinyl ether monomer contains C6-C30 substituted or unsubstituted aryl, the aryl at least contains two photocurable cross-linking groups, and the cross-linking groups contain at least one vinyl ether functional group. The photocuring composition has the advantages of high light transmittance, high curing rate, low gas output, high heat resistance, air curing and the like, and can meet the high-performance requirement of thin film packaging.

The invention discloses a crosslinkable perfluoroelastomer and a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing nitrile perfluoroalkyl vinyl ether, a fluorocarbon solvent, deionized water and an emulsifier, and emulsifying to obtain a nitrile perfluoroalkyl vinyl ether microemulsion; (2) adding raw materials containing the nitrile perfluoroalkyl vinyl ether microemulsion, perfluoromethyl vinyl ether, tetrafluoroethylene and an initiator into a high-pressure polymerization kettle, and carrying out a copolymerization reaction; (3) after the copolymerization reaction is finished, cooling, emptying the pressure of the polymerization kettle to normal pressure, and taking out the emulsion in the kettle; and (4) demulsifying, condensing, filtering, washing and drying the emulsion in the kettle to obtain the crosslinkable perfluoroelastomer. The copolymer has higher molecular weight and crosslinking degree, and can be used as a sizing material of the perfluoroether rubber to perform vulcanization reaction in a rubber system without a crosslinking agent or with peroxide as a crosslinking agent, and the obtained perfluoroether rubber has excellent high temperature resistance.

The invention relates to a high-toughness anti-crack magnetic decorative film and a preparation method thereof. The decorative film is prepared from the following raw materials in parts by weight: 40 to 60 parts of poly (dihydrothiophene-vinyl ether) copolymer, 10 to 25 parts of shell layer self-assembly modified Fe3O4 nanosheets, 5 to 15 parts of polyether ester block elastomer, 0.5 to 2 parts of sodium dodecyl benzene sulfonate, 0.5 to 1.5 parts of fluorosilane coupling agent, 0.1 to 1.0 part of 2-hydroxybenzotriazole ultraviolet absorbent, 3 to 6 parts of bisphenol A type epoxy curing agent and 0.05 to 0.5 part of imidazole catalyst. The flexible copolymer is synthesized through copolymerization of dihydrothiophene and vinyl ether, the modified Fe3O4 nanosheets form a Fe3O4 structure through coprecipitation of ferric chloride and ferrous chloride and regulation and control of ammonia water, and shell self-assembly coating is carried out through tetraethoxysilane and a block micromolecule interface agent. The material has excellent tensile strength, elongation at break, magnetic adsorption force and cycling stability, and is suitable for the application fields of flexible magnetic films and high-adhesion decorations.

The invention provides a phosphate ester water-based polymer as well as a preparation method and application thereof. The phosphate ester water-based polymer is prepared by polymerizing the following monomers: monovinyl ether, a vinyl benzene monomer, allyl polyoxyethylene methyl terminated polyether and phosphorus pentoxide. The phosphate water-based polymer can be used for dispersing water-based nano titanium dioxide and can be used for preparing titanium dioxide dispersion liquid with low particle size, narrow distribution and good stability.

To provide a zwitterionic polymer having a vinyl ether structure.SOLUTION: A zwitterionic polymer comprises a structural unit (1) and a structural unit (2), with the molar ratio ((1):(2)) ranging from 10:1 to 1:10. (R1 and R2 are monovalent alkyl groups having 1 to 4 carbon atoms; L1 is an alkylene group having 2 to 6 carbon atoms; L2 is an alkylene group having 2 to 4 carbon atoms; the sum of carbon atoms of L1, R1, and R2 is 8 or more; and R3 is an alkyl group having 1 to 9 carbon atoms.)SELECTED DRAWING: None

The present invention relates to a coating composition for forming a UV light conversion coating for a photovoltaic cell, a UV light conversion coating prepared therefrom, a method for preparing the UV light conversion coating, and a photovoltaic cell and a photovoltaic module comprising the coating. The composition comprises by mass: (A) 100 parts of a first epoxy resin that is liquid at room temperature, which is an epoxy resin containing at least two glycidyl ether groups per molecule on average; (B) 33-66 parts of a second epoxy resin that is liquid at room temperature, which is an alicyclic epoxy resin containing at least two epoxy cycloalkyl groups per molecule on average; (C) 33-66 parts of a vinyl ether monomer that is liquid at room temperature; (D) 6-16 parts of a cationic initiator; (E) 3-15 parts of a UV light conversion agent; and (F) 0-200 parts of an inert diluent. The light conversion coating prepared by the coating composition can reduce the UV band light transmittance and increase the visible light wavelength transmittance when used in a photovoltaic cell or a photovoltaic module, improve the light conversion efficiency and have excellent adhesion and aging resistance.

The invention relates to the field of flame retardants, in particular to modified magnesium hydroxide for a high-filling material and a preparation method of the modified magnesium hydroxide. The preparation method of the modified magnesium hydroxide comprises the following steps: step 1, carrying out surface amination treatment on magnesium hydroxide particles; step 2, reacting the aminated magnesium hydroxide particles with allylsulfonyl chloride to obtain activated magnesium hydroxide particles; 3, the activated magnesium hydroxide particles react with hydroxypropyl vinyl ether, and modified magnesium hydroxide is obtained. The modified magnesium hydroxide for the high-filling material prepared by the invention has excellent flame-retardant filling property when being applied to a high-molecular material, and compared with a traditional magnesium hydroxide filler, not only is the flame retardance of the high-molecular material improved, but also the mechanical strength and the impact resistance of the high-molecular material are well improved.

The invention discloses a highly flame-retardant and environmentally friendly modified PVC material without antimony trioxide and a preparation process thereof, and belongs to the technical field of modified PVC material preparation. The highly flame-retardant and environmentally friendly modified PVC material without antimony trioxide is composed of the following components in parts by weight: 40-60 parts of PVC, 2-8 parts of PVC modifier, 10-15 parts of microcapsule flame retardant, 2-8 parts of tetrahydrofuran, 0.5-2.1 parts of antioxidant, 2-4 parts of coupling agent, wherein the PVC modifier is prepared from diethylene glycol monovinyl ether, propylene acetate, azobisisobutyronitrile, ethyl acetate and methyl tert-butyl ether, and the microcapsule flame retardant is prepared from sodium hydroxide, choline chloride, phytic acid, corn starch, polyethylene glycol, toluene diisocyanate and pentaerythritol. PVC is modified using a PVC modifier, and a microcapsule flame retardant is added at the same time, and the prepared environmentally friendly modified PVC material has excellent flame retardant effect, rheology and toughness.

The utility model belongs to the technical field of extraction equipment, in particular to extraction equipment for refining vinyl ethyl ether, which comprises a vertical rod seat and a glass ball kettle, the vertical rod seat comprises a sliding rod and a bottom plate, and a display panel is mounted at the upper end of the vertical rod seat. And a sliding rod of the vertical rod base slidably penetrates through the interior of the first connecting plate and the interior of the second connecting plate, and a stirring motor is installed on the upper side of the first connecting plate. According to the extraction equipment for vinyl ether refining, a double-thread screw is rotated, and a first connecting plate and a second connecting plate are far away from each other, so that a worker can quickly take down a glass ball kettle, place the glass ball kettle on the upper side of a connecting ring plate and reversely rotate the double-thread screw, and a connecting block completely enters a butt joint groove, so that a stirring rod normally performs stirring operation; a worker can conveniently dismount or mount the glass ball kettle of the extraction equipment, the knob is rotated, the two supporting plates can be moved out of the support of the vertical rod seat, and the stability of the extraction equipment can be enhanced through the supporting plates.

The invention discloses a high-temperature-resistant perfluoroether elastomer composition and a preparation method thereof. The preparation method of the high-temperature-resistant perfluoroether elastomer composition comprises the following steps: S1, carrying out emulsion polymerization on tetrafluoroethylene, perfluoromethyl vinyl ether, a non-conjugated fluorine diene vulcanization point monomer, a phenyl-containing perfluorodiene vulcanization point monomer and a peroxide initiator according to a preset proportion to obtain a perfluoroether elastomer emulsion; s2, condensing, washing and drying the perfluoroether elastomer emulsion to obtain perfluoroether elastomer micro powder; s3, mixing and thin-passing the perfluoroether elastomer micro powder with a filler, an acid acceptor and a vulcanizing agent in a preset proportion to obtain perfluoroether elastomer mixed rubber; and S4, carrying out compression molding on the perfluoroether elastomer rubber compound, and carrying out secondary vulcanization to obtain the perfluoroether elastomer composition with high temperature resistance and water vapor resistance. The perfluoroether elastomer composition prepared by the invention has the characteristics of high temperature resistance, water vapor resistance and low compression set.

The invention provides perfluorosulfonic acid resin and a polymerization method. The polymerization method comprises the following steps: mixing perfluoromethyl vinyl ether, perfluorosulfonyl fluoride vinyl ether and a fluorine-containing solvent to obtain a mixed solution; and adding an initiator into the mixed solution, introducing a tetrafluoroethylene monomer, carrying out a copolymerization reaction, carrying out solid-liquid separation, and carrying out transformation and drying to obtain the perfluorinated sulfonic acid resin. The perfluoromethyl vinyl ether monomer is introduced into a copolymerization system, so that the rigidity of a polymer main chain is effectively reduced, and the flexibility and low-temperature mechanical strength of the resin are enhanced; the crystallinity is effectively reduced, the Tg is adjusted, and the catalyst is suitable for low-temperature proton exchange membrane fuel cells and other application scenes; the introduction of perfluoromethyl vinyl ether improves the compatibility between the main chain and the sulfonyl fluoride-containing side chain, and is beneficial to the formation of a clearer and more continuous hydrophilic / hydrophobic microphase separation structure. A stable proton conduction network is facilitated, and the electrochemical performance of the resin under harsh working conditions is remarkably improved.