1084 results about "Isobutylene" patented technology

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

A method of manufacturing a free-standing, sheet-type solid-state electrolyte is provided. The method includes: mixing a sulfide ion conductor-containing material and a non-polar or low-polar binder in a solvent to obtain a slurry composition; disposing the slurry composition onto a planar substrate; spreading the slurry composition on the substrate to obtain a film; calendering the film to densify the film; and subsequently drying the film under vacuum. The binder may be polyisobutylene and may be present in the slurry composition in an amount of up to 10 wt. %, optionally between 1 and 5 wt. %. The sulfide ion conductor-containing material may be a lithium argyrodite having the chemical formula Li6PS5X in which X is Cl, Br, or I. The solvent may be toluene or xylene. The film may have a thickness of between 10 and 200 μm.

The invention provides medium-high molecular weight high-activity polyisobutene and a preparation method thereof, and the preparation method comprises the following steps: mixing hydrogen peroxide and a butyl rubber solution, and reacting for 0.5-20 hours at 20-80 DEG C under the catalytic action of a catalyst to obtain epoxidized butyl rubber; dissolving epoxidized butyl rubber to obtain an epoxidized butyl rubber solution; adding an oxidative cracking reagent into the epoxidized butyl rubber solution, and reacting at 0-80 DEG C for 0.5-20 hours to obtain a polyisobutylene solution; the medium-high molecular weight high-activity polyisobutene has the characteristics of high molecular weight, narrow distribution and higher end group activity, and can be applied to the application fields of traditional high-activity polyisobutene such as additives of lubricating oil, fuel oil, rubber and the like; and the product can be used as a sealing material, a waterproof water-retaining agent, a rubber and plastic modifier and the like, can meet wider application requirements, and has good industrial application value.

The invention discloses high-performance anti-wear engine lubricating oil as well as a preparation method and application thereof. The high-performance anti-wear engine lubricating oil is prepared from the following raw materials: self-developed lubricating oil base oil, poly-alpha-olefin, zinc dialkyl dithiophosphate, calcium sulfonate, polyisobutylene succinimide, an antioxidant, polymethacrylate, an organic molybdenum complex, a de-foaming agent and a pour point depressant. The preparation method comprises the following steps: 1) synthesizing 9, 10-bis (2-tert-butyl-4-methylphenoxy) trimethylolethane stearate as base oil of the lubricating oil; and 2) mixing the base oil with other assistants to obtain the high-performance anti-wear engine lubricating oil. According to the preparation method, novel-like synthetic ester oil is firstly prepared, a phenol group and a large steric hindrance substituent group are introduced into a polymer, the anti-oxidation function is directly built in base oil molecules, meanwhile, super-strong heat resistance is achieved, and finally the high-performance anti-wear engine lubricating oil is obtained and can be applied to high-end application scenes such as aero-engines or gas turbines.

The invention discloses a catalyst for an n-butene isomerization reaction and a preparation method thereof, and belongs to the technical field of catalysts. The preparation method comprises the following steps: mixing a silicon source, an aluminum source, tetrapropylammonium hydroxide and water, adding boric acid, and crystallizing to obtain a seed crystal; the method comprises the following steps: mixing a silicon source, an aluminum source, pyridine and water, adding a seed crystal and ammonium fluoride, and crystallizing to obtain a core-shell type molecular sieve; adding the core-shell type molecular sieve into the bimetallic complex solution for dipping to obtain a metal-loaded type molecular sieve; adding the metal-loaded molecular sieve into a triethyl phosphine ethanol solution for treatment to obtain a phosphorus-modified molecular sieve; uniformly mixing the phosphorus-modified molecular sieve, pseudo-boehmite, sesbania powder and water, kneading, performing extrusion molding, drying and calcining to obtain the catalyst. The catalyst prepared by the invention is used for n-butene isomerization reaction, and has excellent catalytic activity and isobutene selectivity.

The invention belongs to the field of functional composite materials, and particularly relates to low-viscosity and high-dispersity aluminum oxide slurry and a preparation method thereof.The low-viscosity and high-dispersity aluminum oxide slurry is prepared from a newly-designed phosphono-carboxyl block copolymer and biquaternary ammonium salt polyether silane as composite modifiers; and efficient anchoring and stable dispersion of the surfaces of alumina particles are realized through the synergistic effect of molecular structures. The phosphono-carboxyl block copolymer is prepared through controllable polymerization and deprotection reaction, and strong chemical bonding is formed between a phosphono group and the surface of aluminum oxide; the biquaternary ammonium salt polyether silane is subjected to click chemical synthesis, and electrostatic adsorption of quaternary ammonium salt and the steric hindrance effect of a polyether chain are combined. When the slurry is prepared, the two modifiers are sequentially added into water, the aluminum oxide powder is added after the pH value is adjusted, finally, the isobutylene maleic anhydride copolymer and the defoaming agent are introduced, and the slurry is obtained through vacuum defoaming and filtering. The slurry prepared by the method has the characteristics of high solid content, low viscosity and good dispersion stability.

A high-thermal-conductivity phase change sheet and a preparation method therefor. The high-thermal-conductivity phase change sheet is prepared from the following raw materials in parts by mass: 3-5 parts of a resin, 80-100 parts of a thermally conductive filler, 0.1-1 part of a treating agent, 0.1-1 part of an antioxidant, and 1-2 parts of a phase change material, wherein the resin is low-molecular-weight polyisobutylene, the thermally conductive filler comprises aluminum powder of 10 μm, aluminum powder of 2 μm and zinc oxide of 0.2 μm, and heat treatment and vacuumizing operation are involved in the preparation process.

The invention discloses a super-retarding type polycarboxylic acid water reducing agent and a preparation method and application thereof, and belongs to the field of concrete water reducing agents. The preparation method comprises the following steps: taking acrylic acid AA, isobutenol polyoxyethylene ether HPEG and hydroxyethyl acrylate HEA as monomers, taking mercaptopropionic acid MPA as a chain transfer agent, taking hydrogen peroxide H2O2 and L-ascorbic acid Vc, and mixing in proportion to serve as an initiator; preparing a first and second monomer mixed solution; adding bottom water into the reaction kettle, and carrying out stepwise polymerization reaction; and cooling the reaction liquid, adjusting the pH value, filtering, and discharging to obtain the product. According to the invention, an ester functional monomer hydroxyethyl acrylate HEA is introduced, and a step-by-step polymerization technology is adopted to control the dispersion process of water reducing agent molecules on cement particles, so that the water reducing agent molecules continuously disperse the cement particles within a certain period of time; the problem that the slump loss is too fast due to long-time and long-distance transportation of concrete or transportation in high-temperature weather is effectively relieved.

The invention relates to the technical field of fuel additives, in particular to a fuel additive as well as a preparation method and application thereof. Comprising the following components in parts by weight: 60 to 220 parts of bis-polyether amine, 10 to 20 parts of polyisobutene amine, 5 to 15 parts of polyether polyol, 5 to 30 parts of alkyl amine alcohol, 0.5 to 20 parts of polybasic fatty acid ester, 0.5 to 20 parts of alkyl acid ester, 10 to 30 parts of a catalyst, 2 to 7 parts of an antioxidant, 5 to 10 parts of a corrosion inhibitor and 10 to 50 parts of carrier oil. A small amount of the fuel additive is mixed with gasoline or diesel oil, and through bis-polyether amine and polyisobutene amine, combustion of fuel oil in a combustion chamber of an internal combustion engine is improved, more complete combustion of the gasoline or the diesel oil is promoted, the combustion efficiency of the fuel oil is enhanced, the oil consumption is reduced, and the economical efficiency of the fuel oil is improved; and air pollution caused by emission of hydrocarbon or combustion intermediate products is reduced.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polypropylene composite material. The polypropylene composite material comprises the following components in parts by weight: 40-80 parts of copolymerized PP (polypropylene), 5-25 parts of POE (polyolefin elastomer), 5-25 parts of polyisobutene and 10-30 parts of filler, the number-average molecular weight of the polyisobutene is greater than 600. The POE elastomer, the polyisobutene and the filler are introduced into the copolymerized PP, so that the polypropylene composite material with low sink mark characteristic and good mechanical property can be obtained.

A gasoline modifier, a preparation method therefor and a use thereof, and a clean and environmentally friendly gasoline containing same. By volume, the gasoline modifier comprises 10-30 parts of No. 3 or No. 5 white oil, 5-50 parts of a gasoline detergent synergist and 40-85 parts of isooctyl alcohol; the gasoline detergent synergist comprises a stock liquid and a diluent liquid; the stock liquid is a liquid substance formed by mixing 2-ethylhexyl phosphate and etidronic acid in a weight ratio of 1.8-3:1 and heating to perform an esterification reaction; and / or the stock liquid comprises 2-ethylhexanol, phosphite ester, 2-ethylhexyl acetate, polyisobutylene succinic anhydride and ethylhexyl phosphate; the diluent liquid is formed by mixing formaldehyde having a content greater than 99% with oligomeric water clusters in a weight ratio of 1:4-3:7; and the weight percentage of the stock solution in the gasoline detergent synergist is 0.8%-1.3% white oil. The gasoline modifier is a pure petroleum product. When added to gasoline, it can change the physical properties of the gasoline, and achieve the effects of increasing efficiency, saving fuel, removing carbon and reducing emissions.

The invention relates to the technical field of waterproof coiled materials, and particularly discloses a self-adhesive modified rubber asphalt waterproof coiled material and a preparation method thereof. The self-adhesive modified rubber asphalt waterproof coiled material comprises a surface isolating membrane, an asphalt layer, a reinforcing layer and a bottom surface isolating membrane from bottom to top, and the asphalt layer comprises the following raw materials: regenerated rubber modified asphalt, SEBS, terpene resin, polyisobutene amine, an antioxidant and an ultraviolet light absorber; the surface isolating membrane and the bottom isolating membrane are selected from sand surface isolating membranes, and the thickness of the surface isolating membrane and the bottom isolating membrane is 0.8-1.2 mm; and the reinforcing layer is a long-fiber polyester base reinforcing layer. The tensile strength of the self-adhesive modified rubber asphalt waterproof coiled material is 4.5-5.6 N / mm < 2 >, the self-adhesive modified rubber asphalt waterproof coiled material does not flow or drip at 70 DEG C and does not crack at-30 DEG C, the self-adhesive modified rubber asphalt waterproof coiled material has high use performance, the joint peel strength of the waterproof coiled material is 3.2-4.2 N / mm, the holding power is greater than 15 min, and the self-adhesive property of the waterproof coiled material is improved.

The invention relates to a butyl hot melt adhesive, which is prepared from the following raw materials in parts by weight: 10 to 30 parts of butyl rubber, 5 to 15 parts of polyisobutene, 25 to 50 parts of amorphous polyolefin, 10 to 30 parts of organic silicon modified polymer, 0.1 to 1 part of lubricant, 0.1 to 1 part of antioxidant, 1 to 30 parts of modified filler and 1 to 20 parts of carbon black, the organic silicon modified polymer comprises a polyurethane polymer terminated by a silane coupling agent. The butyl hot melt adhesive provided by the invention has the characteristics of difficulty in flowing after being heated, good high-temperature stability and excellent bonding performance, can be used for bonding and sealing a car lamp, and can ensure that the car lamp is stable in structure in a high-temperature environment, so that the car lamp can still work normally in hot weather or when the car lamp is close to high-temperature parts such as an engine, and the service life of the car lamp is prolonged.

The invention relates to the field of sealing materials, in particular to a butyl rubber sealing material and a preparation method thereof. Comprising the following components in parts by weight: 50-70 parts of butyl rubber, 30-50 parts of a brominated isobutylene-p-methylstyrene copolymer, 30-50 parts of carbon black, 8-12 parts of an alkyl phenolic resin vulcanizing agent, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of an anti-aging agent and 5-10 parts of a plasticizer. The butyl rubber provides ideal air tightness and heat aging resistance, bromine atoms are introduced into the brominated isobutylene-p-methylstyrene copolymer, co-vulcanization with the butyl rubber is achieved, it is ensured that a uniform and stable co-crosslinking network can be formed between the two rubber molecules, and the service life of the rubber is prolonged. The alkyl phenolic resin vulcanizing agent can form a C-C bond with high bond energy with two rubber molecules, so that the thermal aging resistance of the butyl rubber sealing material is effectively improved, the compression set is reduced, and the butyl rubber sealing material with excellent performance is prepared.

The present invention relates to a composition in the form of a water-in-oil emulsion, including, (a) one or more esters formed from at least one fatty acid having more than 13 carbon atoms; (b) a polymer component including one or more polymerized (iso)butenes; (c) at least about 3% by weight of one or more carbohydrate fatty acid ester emulsifiers; (d) one or more fillers comprising hydrophobic silica; and (e) one or more pigments. The composition is substantially free of silicones & alkanes.

The invention discloses a hydrolysis-resistant reinforced high-temperature nylon composite material and a preparation method thereof, and relates to the technical field of nylon composite materials. The hydrolysis-resistant reinforced high-temperature nylon composite material is prepared from the following components in parts by mass: 50-85 parts of a nylon resin matrix, 10-40 parts of a reinforcing material, 4-8 parts of polyisobutene, 0.5-8 parts of a hydrolysis-resistant agent, 0.1-2 parts of an antioxidant and 0.2-3 parts of a lubricant. Through the synergistic effect of the antioxidant and the hydrolysis-resistant agent, a hydrolysis reaction chain is effectively blocked, and performance degradation of the material in a high-temperature and high-humidity environment is greatly delayed. The compatibility of the material and a resin matrix is improved, and the interface bonding force is enhanced by combining a gradient cooling process, so that the material still keeps high mechanical strength retention rate under extreme working conditions.

The invention discloses a catalyst for synthesizing 3-methyl-3-butene-1-alcohol as well as preparation and application of the catalyst. The preparation method of the catalyst comprises the following steps: (S1) mixing acrylic acid, acrylate, a dispersing agent, a flatting agent and a light curing agent to obtain a photosensitive resin mixed solution; (S2) mixing first powder with the photosensitive resin mixed solution obtained in the step (S1), sequentially adding a suspending agent, a soaking and washing agent and second powder, standing, and then adding an anti-sticking agent and a soaking and washing agent to obtain printing slurry; and (S3) loading the printing slurry obtained in the step (S2) into a liquid carrying device, carrying out 3D printing according to a set program, and carrying out post-treatment to obtain the catalyst with a three-dimensional cuboid grid skeleton structure. The catalyst is high in mechanical strength and long in service life, and is used for the process of generating 3-methyl-3-butene-1-alcohol from isobutene and formaldehyde, and the formaldehyde conversion rate and the 3-methyl-3-butene-1-alcohol selectivity are greatly improved.

The invention discloses a hydrogenation device scale inhibitor for heavy high-sulfur raw oil and a preparation method of the hydrogenation device scale inhibitor, and relates to the technical field of scale inhibitors. The scale inhibitor is prepared from a polyisobutylene succinimide dispersing agent, a high-temperature-resistant scale inhibition dispersing agent, an anti-rust agent, an imidazoline corrosion inhibitor, an antioxidant, a sulfide chelating agent, a clearing agent, cup carbazole alkylbenzene sulfonate and a solvent in specific parts by weight. The preparation method comprises the following steps: heating the solvent to 80-100 DEG C, sequentially adding the other components, and stirring for 30-40 minutes. Aiming at the characteristics of heavy high-sulfur raw oil, the scale inhibitor realizes high scale inhibition rate, excellent high-temperature stability and strong sulfur corrosion resistance through a multi-component synergistic effect, effectively solves the problems of scaling and corrosion of a hydrogenation device, prolongs the operation cycle of the device, and is suitable for a hydrogenation process of high-sulfur and high-asphaltene raw oil.

The invention relates to the technical field of preparation of sealing materials, in particular to a photovoltaic module sealant with ultralow water vapor transmittance and a preparation method of the photovoltaic module sealant. The invention discloses a solar cell panel which at least comprises the following components in parts by weight: 4-10 parts of polymer rubber or resin, 25-30 parts of medium molecular weight polyisobutene, 7-15 parts of silane modified resin, 15-20 parts of reinforcing filler, 30-40 parts of incremental filler, 3-8 parts of a drying agent, 0.3-1 part of an antioxidant and 0.3-1 part of an ultraviolet stabilizer. Meanwhile, the anti-aging performance and the processing performance are excellent, so that the photoelectric conversion efficiency of the solar cell is improved, and the service life of the solar cell is prolonged.

A composite oil phase and composite emulsion matrix for site-mixed emulsion explosive and preparation methods therefor. The composite oil phase is divided into material A and material B, wherein in the material A, a high-viscosity polyisobutylene maleic anhydride amine esterification derivative is used as a primary emulsifier to increase the strength and thickness of an emulsification film of an emulsion matrix, thereby improving the stability of the emulsion matrix; in the material B, a low-viscosity polyisobutylene maleic anhydride amine esterification derivative and SP-80 are used as primary emulsifiers to regulate the ammonium nitrate dissolution rate of the emulsion matrix, thereby improving the sensitization characteristic of the emulsion matrix; and the emulsion matrix prepared from two composite oil phases can effectively improve the water resistance of the emulsion matrix while the problems of high-temperature over-sensitization and low-temperature insensitivity are solved, so that the explosion quality is guaranteed.

The invention discloses a high-performance clean type anti-wear hydraulic oil complexing agent which is prepared from the following substances in parts by mass: 30 to 60 parts of an antioxidant, 20 to 40 parts of an anti-wear agent, 2 to 5 parts of boronized polyisobutylene bis-succinimide, 2 to 7 parts of thiocarbamate, 4 to 10 parts of dodecenylsuccinic acid and 0.2 to 2 parts of graphene nanosheets. The lubricating oil is prepared from the following components in parts by weight: 0.5-1.5 parts of a metal deactivator, 0-2 parts of DISUPER S24 and 30-50 parts of base oil. The preparation method comprises the following steps: S21, heating the base oil, adding the boronized polyisobutylene bis-succinimide and the thiocarbamate, and stirring; s22, sequentially adding an antioxidant, an anti-wear agent, dodecenylsuccinic acid, DISUPER S24 and a metal deactivator into the solution obtained in the step S11, heating to 80 DEG C, and reacting for 2 hours; and S23, adding graphene nanosheets into the solution obtained in the step S22, and carrying out ultrasonic dispersion for 1 hour to obtain the product.

The present invention discloses a preparation method and application of a single-ion conductor composite binder. The binder is prepared by compounding and modifying a copolymer of butyl acrylate and lithium 2-acrylamido-2-methylpropanesulfonate with polyisobutylene. Its main features are as follows: First, the binder can be completely dissolved in the non-polar solvent toluene, solving the problem of incompatibility between traditional binders and sulfide electrolytes; Second, the unique molecular structure design endows it with excellent adhesion performance and ion conduction ability at the same time, which can significantly reduce the interfacial impedance. The flexible chain segment of butyl acrylate provides elastic support, and the sulfonic acid groups of lithium 2-acrylamido-2-methylpropanesulfonate form strong chemical bonds with the surface of sulfide particles, enhancing the binding force with the electrolyte. The preparation process of the binder of the present invention is simple, the cost is controllable, and it is suitable for large-scale production, providing an important material solution for promoting the industrialization of sulfide all-solid-state batteries.

The invention relates to the technical field of guide rail oil, and particularly discloses high-performance machine tool guide rail oil and a preparation method thereof. The high-performance machine tool guide rail oil comprises the following components in parts by weight: 90-110 parts of base oil, 5-8 parts of composite microcapsules, 0.5-3 parts of polyisobutene, 5-10 parts of alkyl naphthalene and 2-5 parts of a surfactant, according to the composite microcapsule, modified chitosan serves as a capsule wall, white oil and organic intercalated montmorillonite serve as core materials, and meanwhile a layer of silicon dioxide is attached to the surface of the capsule wall. The high-performance machine tool guide rail oil prepared by the invention has the advantages of high lubrication and friction resistance.

The invention discloses a sulfurized isobutylene deodorization method, which specifically comprises the following steps: mixing sulfurized isobutylene with isocyanate, carrying out stirring reaction, standing, and carrying out reduced pressure distillation to obtain a deodorized sulfurized isobutylene product. According to the method, very active isocyanate substances react with the mercaptan to eliminate or reduce the content of the mercaptan in the sulfurized isobutylene, so that the odor of the sulfurized isobutylene is effectively reduced, the removal rate of the mercaptan can reach 96% or above, the odor of the sulfurized isobutylene can be reduced by three grades to 1 grade according to an odor evaluation method, and the odor of the sulfurized isobutylene can be reduced by three grades to 1 grade. Meanwhile, the PB, PD, ZMZ, wear scar diameter and other properties of the sulfurized isobutylene are not greatly changed. The method can greatly improve the industrial production and use environment of sulfurized isobutylene, and has important application value in the field of extreme pressure wear resistance.

A lubricant composition may be of use in lubrication of an internal combustion engine. A method of utilizing such a lubricant composition may include: lubricating an internal combustion engine using a lubricant composition comprising: from about 30.0 mass % to about 99.8 mass % of an oil base stock, based on a total mass of the lubricant composition, the oil base stock comprising at least one polyol ester; and from 1.0 mass % to 30.0 mass % polyisobutylene, based on a total mass of the lubricant composition; and combusting a fuel in the internal combustion engine.

The invention provides high-strength modified calcium carbonate and a preparation method thereof, and belongs to the technical field of modified calcium carbonate preparation. The preparation process comprises the following steps: preparing porous vaterite-phase nano calcium carbonate; preparing high-strength filling porous vaterite phase nano calcium carbonate; and preparing high-strength modified calcium carbonate. According to the preparation method, 3-(methacryloyloxy) propyl trimethylsiloxane and poly (ethylene glycol) diacrylate are subjected to a polymerization reaction under the action of azodiisobutyronitrile, and then modified calcium carbonate is grafted, so that the compatibility and dispersity of the modified calcium carbonate and a polymer can be improved, and porous vaterite-phase nano calcium carbonate is prepared; the porous vaterite-phase nano calcium carbonate is subjected to filling modification, so that the strength of the porous vaterite-phase nano calcium carbonate can be improved.

The invention discloses a hot-melt loxoprofen sodium patch and a preparation method thereof, the hot-melt loxoprofen sodium patch comprises a backing layer, an adhesion layer and a protective layer, the adhesion layer comprises the following components in percentage by weight: 5-6% of loxoprofen sodium or its hydrate, 19-26% of styrene-isoprene-styrene block copolymer, 5-15% of polyisobutene, 5-15% of hydrogenated rosin glyceride and 40-50% of liquid paraffin; by optimizing the model and dosage of the styrene-isoprene-styrene block copolymer and the polyisobutene, the adhesive force and cohesive force of the loxoprofen sodium patch are improved at the same time through the combined action, and the long-term stability can be kept.

The invention discloses unimodal / bimodal distribution high-molecular-weight polyisobutene and a preparation method thereof, and belongs to the field of preparation of high-molecular-weight compounds. According to the preparation method, the high-molecular-weight polyisobutene with the molecular weight in unimodal / bimodal distribution is prepared through a simple initiator and co-initiator system. Using a simple and easily available initiator and Lewis acid with relatively weak corrosion to equipment as co-initiators, and carrying out simple initiator substituent group adjustment and technological process optimization at a relatively high temperature (-60 DEG C to-90 DEG C) to obtain the high molecular weight polyisobutene with the weight-average molecular weight range of 69.69 * 10 < 4 >-275.8 * 10 < 4 > g / mol and monomodal / bimodal distribution, wherein the high molecular weight polyisobutene has a weight-average molecular weight range of 69.69 * 10 < 4 >-275.8 * 10 < 4 > g / mol.

An electroconductive pressure-sensitive adhesive tape includes at least an electroconductive pressure-sensitive adhesive layer containing at least a rubber component and electroconductive particles. The rubber component contains a polyisobutylene (A) having a viscosity average molecular weight of 400,000 or more and 800,000 or less and a polyisobutylene (B) having a viscosity average molecular weight of 100,000 or less. The electroconductive pressure-sensitive adhesive tape achieves both a superior adhesive property and a high swelling resistance to an electrolyte layer, especially, a high swelling resistance to an electrolyte layer containing dimethyl carbonate.

A composite board, including a core, and a capstock positioned to at least partially cover the core, where the capstock includes 10 wt. % to 70 wt. % of polyvinyl chloride (PVC), based on a total weight of the capstock, 1 wt. % to 60 wt. % of acrylonitrile-styrene-acrylate (ASA), based on the total weight of the capstock, 1 wt. % to 60 wt. % of styrene-acrylonitrile (SAN), based on the total weight of the capstock, and 1 wt. % to 60 wt. % of a thermoplastic elastomer, where the thermoplastic elastomer includes styrene-isobutylene-styrene (SIBS), a thermoplastic copolyester elastomer, a polymeric plasticizer, and combinations thereof, wherein the capstock does not include thermoplastic polyurethane.