1130 results about "Diene" patented technology

A rubber coating for a radiofrequency identification device for a tyre characterized in that it comprises: (a) 100 phr of at least one diene-based elastomer; (b) at least one chemical according to formula (1) wherein the chemical comprises in its structure at least the structure of the 2,2′-methylenediphenol, and wherein the 2,2′-methylenediphenol may be substituted in ortho, para, meta position or any combination thereof with an aliphatic, linear or branched, hydrocarbon chain comprising from 1 to 10 C atoms, or may be polymerized in ortho, para, meta position or any combination thereof with one or more additional alkylphenol units. A radiofrequency identification (RFID) module for a tyre comprising a radiofrequency identification device surrounded by a rubber coating, a tyre or a tyre retread comprising such radiofrequency identification module, and use of a rubber coating for surrounding a radiofrequency identification device.

The present invention relates to an elastomeric laminate comprising at least two adjacent layers, wherein: the rubber composition constituting the first layer is based on 20 phr to 100 phr of at least one copolymer comprising ethylene units and 1,3-diene units of formula CH2=CR-CH=CH2, the ethylene units in the copolymer representing more than 50 mol% of the copolymer monomer units, and the symbol R represents a hydrocarbon chain having 3 to 20 carbon atoms, 0 phr to 80 phr of at least one diene elastomer having a diene unit weight concentration greater than 50%, 10 phr to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature higher than 20°C and / or at least one plasticizer which is liquid at 23°C, and a reinforcing filler, and a crosslinking system; the rubber composition constituting the second layer is based on a diene elastomer having a diene unit weight concentration greater than 50% and a crosslinking system. The present invention also relates to a rubber article, in particular a pneumatic or non-pneumatic tire, comprising such a laminate.

The present invention discloses a class of imide ring-containing dimercapto monomers, imide ring-containing diene monomers and preparation methods thereof, a light-responsive polyimide material and preparation method thereof, and relates to the technical field of light-driven materials. The present invention uses a dibasic acid anhydride as the basic monomer unit, and prepares a dimercapto monomer containing an imide structure and a monomer containing an imide ring-containing diene monomer by reacting with a monothiol compound and a monoalkyne compound, respectively. The two monomers are subjected to a thiol-alkyne click reaction to finally obtain a high molecular weight polyimide. The polyimide obtained by the present invention has excellent solubility, high tensile strength, good heat resistance and light transmittance; the polyimide material is placed under an ultraviolet lamp for uneven photocrosslinking to quickly obtain a light driver with excellent reversible driving performance.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The invention provides a compression-molded light transparent high-heat wear-resistant rubber and plastic outsole and a preparation method thereof, and the compression-molded light transparent high-heat wear-resistant rubber and plastic outsole is prepared from the following materials in parts by mass: 50-60 parts of high-hardness thermoplastic resin; 10 to 20 parts of polydiene rubber; 20 to 30 parts of mixed polyurethane; 3-5 parts of a heat conduction auxiliary agent; 0.5-1 part of an anti-aging agent; 0.1 to 0.3 part of an ultraviolet absorbent; 0.1 to 0.3 part of a lubricant; and 0.3 to 0.5 part of a cross-linking agent. The limited components are internally mixed by an internal mixer and then are subjected to flat-plate mould pressing vulcanization to obtain the light transparent high-heat wear-resistant rubber and plastic outsole which is formed by mould pressing. According to the light transparent high-heat wear-resistant rubber and plastic outsole, nano spherical aluminum oxide is added as a heat-conducting additive, so that light scattering caused by refractive index difference between filler and a matrix and particle aggregation is effectively reduced, and the original transparent texture of the material is maintained to the greatest extent while the material is endowed with a heat-conducting function; the sole is especially suitable for high-strength sports shoes such as basketballs, racing running shoes and the like which have harsh requirements on sole performance.

The invention provides a graphene dispersion liquid, a preparation method thereof and a water-based paint, aiming at solving the problem that the performance of graphene is influenced due to insufficient dispersion force and poor dispersion stability when a conventional dispersing agent is used for dispersing graphene in water in the prior art. The graphene dispersion liquid comprises a first solvent and modified graphene oxide, and the modified graphene oxide is dispersed in the first solvent; the modified graphene oxide comprises an inner core and a shell layer, the inner core is graphene oxide, the shell layer is a diene modified polymer, and the diene modified polymer is grafted on the inner core; the diene modified polymer comprises one or more of a cyclopentadiene modified polymer and a furan modified polymer. According to the graphene dispersion liquid provided by the invention, the diene modified polymer is grafted on the graphene oxide, and the graphene oxide is uniformly dispersed in the solvent by utilizing the hydrophilicity of the diene modified polymer, so that the graphene dispersion liquid with stable dispersion performance can be obtained.

The invention relates to a transmission belt (10) comprising a body provided with at least one elastomer-based tooth (B), said at least one tooth comprising: - an ethylene-propylene-diene monomer in a proportion of between 85 and 100 parts, per 100 parts of elastomer; - natural rubber in a proportion at most equal to 15 parts; - and regenerated carbon black in a proportion of between 20 and 70 parts.

The invention relates to a process for realizing uniform foaming of an elastic rotating body through temperature gradient control, in particular to an elastic rotating body foaming forming process which comprises the following steps: S1, raw material pretreatment and internal mixing: adopting a blend of POE (Polyolefin Elastomer) and EPDM (Ethylene-Propylene-Diene Monomer) as a main body material, mixing POE and EPDM according to a mass ratio of 6: 4-8: 2, and carrying out extrusion molding; adding 3%-15% of an anti-shrinking agent, 8%-20% of talcum powder and 5%-12% of calcium carbonate as fillers, and mixing and plasticizing for 8-12 minutes through an internal mixer at the temperature of 80-100 DEG C and the rotor rotating speed of 30-50 rpm. According to the foaming forming process of the elastic rotating body, the shaping pipe and the built-in heating pipe are arranged in the middle of the mold cavity, so that the temperature of the middle of the mold cavity is 1-3 DEG C higher than that of the upper and lower areas, and therefore, an accurate axial temperature gradient is formed, the decomposition rate of a foaming agent and the material curing process are effectively balanced, and shrinkage deformation caused by uneven temperature is inhibited.

The invention discloses low-odor thermoplastic vulcanized rubber for an automobile skin as well as a preparation method and application of the low-odor thermoplastic vulcanized rubber. The raw materials comprise 50 to 80 parts of ethylene-propylene-diene copolymer rubber, 20 to 50 parts of polypropylene, 5 to 15 parts of a compatilizer, 0.5 to 2.5 parts of a compound cross-linking agent, 0.5 to 2.0 parts of an odor adsorbent and 0.5 to 1.0 part of an antioxidant. The preparation method comprises the following steps: banburying and blending, dynamically vulcanizing by using a first double-screw extruder, adsorbing and deeply devolatilizing by using a second double-screw extruder, and carrying out vacuum baking at 100 DEG C. By utilizing the synergistic effect of the cross-linking agent and the assistant cross-linking agent, the degradation of polypropylene is inhibited while the cross-linking efficiency is ensured, and a low-boiling-point reaction by-product (tert-butyl alcohol) is thoroughly removed through a multi-stage devolatilization process, so that the problems that the traditional TPV material is strong in odor and easy to atomize are solved. The smell grade of the obtained material is less than or equal to 3.0 grade, and the atomization value is lt; and the coating is suitable for high-end automotive trim skins.

The invention relates to the technical field of lithium ion battery assistants, in particular to an anode slurry dispersing, compacting and anti-cracking assistant for a lithium battery and a preparation method of the anode slurry dispersing, compacting and anti-cracking assistant. The anti-cracking aid is prepared from the following raw materials in parts by mass: 20-80 parts of a special polymer, 10-30 parts of a wetting agent, 10-30 parts of a plasticizer and 10-100 parts of a solvent, wherein the preparation raw materials of the special polymer comprise a vinyl monomer, an acrylic monomer, a diene monomer and an initiator; the wetting agent comprises the following raw materials: an amine compound and a hydrazine compound; and the plasticizer is polyether phosphate. When the additive is used for preparing the lithium battery positive electrode slurry, the slurry is uniformly dispersed and low in viscosity, the use of solvents can be reduced, the production process is shortened, and the actual use effect is excellent.

The invention relates to the technical field of cables, and provides a corrosion-resistant control cable and a preparation method thereof. The corrosion-resistant control cable sequentially comprises a conductor, an insulating layer, a shielding layer and a sheath layer from inside to outside, wherein the sheath layer comprises the following components in parts by weight: 50-70 parts of polyvinyl chloride, 15-25 parts of ethylene propylene diene monomer, 10-20 parts of modified graphene oxide, 0.5-1.5 parts of an antioxidant, 3-5 parts of a plasticizer, 15-20 parts of a flame retardant, 2-4 parts of a compatilizer, 4-5 parts of an active agent, 1-3 parts of an assistant crosslinking agent and 1-3 parts of a crosslinking agent; wherein the modified graphene oxide is obtained by modifying graphene oxide with dimethyl 5-hydroxyisophthalate and N-hydroxymethyl acrylamide. According to the technical scheme, the problem of insufficient corrosion resistance of the control cable in the prior art is solved.

The present disclosure relates to a process for polymerising olefins in multistage polymerisation process configuration. The process comprises polymerising, in a reactor, first olefin monomer, optionally in the presence of at least one alpha olefin comonomer, in the presence of a polymerisation catalyst to produce a first polymer component (A); polymerising, in a downstream gas phase reactor, second olefin monomer at a first operating pressure in the presence of the first polymer component (A) and optionally in the presence of at least one alpha olefin comonomer to produce a second polymer component (B) at a production rate that provides a weight ratio of first polymer component (A) to second polymer component (B) that is below a target threshold value; and increasing the first operating pressure to a second operating pressure in the downstream gas phase reactor when the weight ratio of first polymer component (A) to second polymer component (B) increases above the target threshold value.

The invention relates to the technical field of automobile sealing strips, and provides an anti-aging rubber sealing strip for an automobile and a preparation method of the anti-aging rubber sealing strip. The anti-aging rubber sealing strip for the automobile comprises the following components in parts by weight: 55-70 parts of ethylene propylene rubber, 30-45 parts of ethylene propylene diene monomer, 4-8 parts of an anti-aging agent, 35-60 parts of a filling agent, 3-7 parts of a softening agent, 8-10 parts of a plasticizer, 1.2-2.5 parts of an accelerant, 4-8 parts of zinc oxide and 1-2 parts of a vulcanizing agent. The anti-aging agent comprises diatomite-loaded tea polyphenol and a diatomite-loaded anti-aging agent. By means of the technical scheme, the problem that in the prior art, an automobile rubber sealing strip is poor in aging resistance is solved.

The invention discloses high-rubber-impact-resistance co-polypropylene and a preparation method thereof. The preparation method comprises the following steps: propylene is subjected to a homopolymerization reaction in a catalytic system; and adding the long-chain substituted diene mixed with the solvent in a copolymerization stage, and introducing mixed gas of propylene and other monoene for reaction to obtain the high-rubber anti-impact co-polypropylene. The long-chain substituted diene mixed with the solvent is added in the copolymerization stage, the crosslinking degree and the product uniformity of the high-rubber-impact-resistance co-polypropylene prepared by the method disclosed by the invention are remarkably improved, the introduction amount of the long-chain substituted diene is reduced, the cost is reduced, and the production efficiency is improved. In addition, the content of a rubber phase is broken through, the particle surface is not sticky, the viscosity index change is small after heating, the distribution and fluidity of the propylene copolymer are effectively controlled, and the low-temperature impact toughness is higher.

The invention relates to a protective sleeve for a flame-retardant cable, a preparation method of the protective sleeve and the flame-retardant cable. The protective sleeve for the flame-retardant cable comprises the following components in parts by weight: 40-60 parts of chlorinated polyethylene, 1-10 parts of a polyolefin elastomer, 1-10 parts of modified magnesium hydroxide, 1-10 parts of an antimony-containing flame retardant and 1-8 parts of modified magnesium-aluminum hydrotalcite. The flame-retardant cable comprises a conductor, an insulating layer and the protective sleeve, wherein the insulating layer comprises the following components in parts by weight: 40-60 parts of ethylene propylene diene monomer and 30-60 parts of modified magnesium hydroxide. The formula of the protective sleeve for the flame-retardant cable is reasonably designed, so that the prepared protective sleeve has excellent flame retardance, torsion resistance and aging resistance. The flame-retardant cable is further matched with a protective sleeve and an insulating layer containing modified magnesium hydroxide, and the flame-retardant cable which is suitable for wind power generation and passes an A-type bunching combustion test is prepared.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

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 a high-modulus epoxy resin-based structural adhesive material and a preparation method thereof, and relates to the technical field of adhesive preparation. The epoxy resin-based structural adhesive material comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-30 parts of a curing agent, 5-15 parts of a nano reinforcing filler, 3-8 parts of a flexibilizer, 2-4 parts of an auxiliary agent and 0.5-2 parts of an accelerant. The flexibilizer is prepared from carboxyl-terminated nitrile rubber and ethylene propylene diene monomer in a mass ratio of (1-3): 1, and the nano reinforcing filler is prepared from surface-modified nano silicon dioxide, surface-treated nano calcium carbonate and modified multi-walled carbon nanotubes in a mass ratio of (1-2): 1: (0.8-1.2). The preparation method is simple and easy to implement, all the components can be evenly dispersed, no harmful substance is generated in the preparation process, the obtained structural adhesive has the excellent bonding performance, meanwhile, the high modulus characteristic is achieved, the requirements for high-strength and high-modulus structural adhesives in the high-end fields of aerospace, automobile manufacturing and the like can be met, and the structural adhesive has good application prospects. Good application prospects are realized.

The invention discloses a high-strength bamboo-plastic composite material which comprises the following components in parts by mass: 30-55 parts of modified bamboo powder; 20 to 40 parts of high melt index polypropylene; 15 to 30 parts of low melt index polypropylene; 3 to 5 parts of maleic anhydride grafted polypropylene; 5 to 14 parts of maleic anhydride grafted POE (Polyolefin Elastomer); 5-8 parts of ethylene propylene diene monomer; the modified bamboo powder is prepared by carrying out microwave treatment, dilute alkali liquor treatment, composite enzymolysis and grafting modification on bamboo powder. The high-strength bamboo-plastic composite material provided by the invention is high in bamboo powder filling content, environment-friendly and good in mechanical property, the tensile strength can reach 33 MPa or above, the bending strength can reach 55 MPa or above, the normal-temperature toughness and the low-temperature toughness are remarkably improved, the notch impact strength at the temperature of-20 DEG C can reach 8 kJ / m < 2 > or above, and the processing fluidity is good; the method is suitable for industrial processing technologies such as injection molding and extrusion, and has great market value.

The invention discloses a durable corrosion-resistant water-stop belt and a preparation method thereof, and relates to the technical field of compositions containing polyisobutene high-molecular compounds. The durable corrosion-resistant water-stop belt is prepared from the following raw materials in parts by mass: 30 to 60 parts of ethylene propylene diene monomer, 20 to 40 parts of polyisobutene, 20 to 50 parts of filler, 0.5 to 3 parts of antioxidant, 0.5 to 3 parts of anti-aging agent, 1 to 5 parts of peroxide cross-linking agent and 1 to 10 parts of processing aid. Through the synergistic effect of the specific anti-aging agent and the antioxidant, photo-oxidative aging and thermo-oxidative aging of the material are effectively inhibited. The anti-aging agent absorbs ultraviolet rays and converts the ultraviolet rays into heat energy to prevent the ultraviolet rays from damaging polymer chains; and the antioxidant delays oxidative degradation. The two layers form double protective barriers, so that the service life of the waterstop is greatly prolonged, and the performance attenuation trend is slowed down. Through material innovation (anti-aging agent + PBS + EPDM) and process optimization (segmented mixing / cooling), three core advantages of prolonging the service life, strengthening corrosion resistance and improving construction convenience are synchronously realized.

To provide a rubber composition for tires that has a large breakage elongation and excellent performance on ice, and a tire manufactured using the rubber composition for tires.SOLUTION: A rubber composition for tires includes 100 pts. mass of diene rubber, 30 to 100 pts. mass of at least one type of filler selected from the group consisting of carbon black and white fillers, and 0.1 to 30 pts. mass of polyurethane fine particles with an average particle diameter of 1 to 300 μm. The polyurethane fine particles are derived from a composition containing polyol, polyisocyanate, water, and oil as a dispersing medium, and satisfying at least one of the following conditions (1) and (2). Condition (1): The polyol is a vegetable oil-based polyol. Condition (2): The polyisocyanate is a biomass-based polyisocyanate.SELECTED DRAWING: Figure 1

The invention discloses an AES concentrated formula with high-activity components and a preparation method of the AES concentrated formula. The invention discloses an AES (acrylonitrile-ethylene-propylene-diene monomer styrene) water-based detergent which comprises the following components in percentage by weight: 25%-35% of AES, 8%-12% of sodium n-alkyl benzene sulfonate, 5%-8% of alkyl glycoside, 4%-6% of cocamidopropyl betaine, 18%-28% of a composite chelating agent, 2%-4% of sodium chloride, 0.3%-0.5% of EDTA (Ethylene Diamine Tetraacetic Acid)-disodium, 0.5%-1% of sodium benzoate, 3%-5% of propylene glycol and the balance of deionized water. AES is used as a main surfactant, and forms a ternary compound system with sodium n-alkyl benzene sulfonate, alkyl glycoside and cocamidopropyl betaine. Through the synergistic effect of the surfactants of different ion types, the critical micelle concentration (CMC) and the micelle aggregation number are remarkably improved, so that the active ingredients can form a stable micelle structure at a lower concentration, and the dirt-removing power and the foaming performance are improved. Sodium tripolyphosphate, sodium pyrophosphate and sodium citrate form a composite chelating agent, the chelating capacity of the composite chelating agent on Ca < 2 + >, Mg < 2 + > and other metal ions is larger than or equal to 300 mgCaCO3 / g, the inhibition effect of hard water on a surfactant can be effectively eliminated, and the stability of the formula under different water quality conditions is enhanced.

The invention provides a high-toughness bundling grating and a production process of the high-toughness bundling grating. The composite material is prepared from the following raw materials in parts by weight: 32 to 42 parts of epoxy modified unsaturated polyester resin, 26 to 36 parts of alkali-free glass fiber, 7 to 11 parts of metallocene polyolefin, 5 to 9 parts of high-branching-degree polyolefin, 4 to 8 parts of ethylene propylene diene monomer, 2.5 to 5.5 parts of core-shell structure elastomer toughening agent, 1.5 to 4.5 parts of modified nano aluminum nitride-graphene composite filler, 0.7 to 1.1 parts of silane coupling agent and 0.5 to 0.9 part of antioxidant. 0.4 to 0.7 part of ultraviolet stabilizer, 0.4 to 0.8 part of calcium stearate and 0.1 to 0.3 part of conductive additive. According to the invention, the core-shell structure elastomer toughening agent realizes toughening without damaging strength through core-shell synergy, and the impact strength is improved by 40% or above; the modified nano aluminum nitride-graphene composite filler constructs a heat conduction-antistatic network, and the modified nano aluminum nitride-graphene composite filler and the metallocene polyolefin are matched with the high-branching-degree polyolefin and the ethylene propylene diene monomer to enhance low-temperature toughness and creep resistance.

The invention relates to a zwitterionic particle and a preparation method and application thereof, the zwitterionic particle is of a core-shell structure, the shell is a water-soluble zwitterionic polymer, and the core is a water-insoluble cross-linked polymer; the preparation method comprises the following steps: firstly, preparing core-shell polymer particles of which shells are polydiolefin and cores are crosslinked polystyrene or crosslinked polymethacrylate polymers by combining an active anionic polymerization mediated polymerization induced self-assembly technology with a post-polymerization modification technology; then, polydiolefin of a shell layer is hydrolyzed with trifluoroacetic acid, hydroxylated polydiolefin is prepared, hydroxyl is converted into potassium alkoxide, bromoisobutyl ester or a chain transfer reagent, and allyl monomers containing tertiary amine are initiated to be subjected to controllable / active polymerization; and finally, converting the tertiary amine group into a zwitterionic group by using a modification reagent to prepare the core-shell particle of which the shell is a water-soluble zwitterionic polymer and the core is a water-insoluble polymer. According to the invention, the problem of limitation in the aspects of controllability, function expansion and the like in the prior art is solved.

The invention discloses a chain dienol carboxylate compound and a preparation method thereof, alkynyl allyl ester is used as a substrate, in the presence of a nucleophilic catalyst, alkynyl allyl ester, a carboxylic acid compound and an active methylene compound are subjected to a biaddition reaction, and a product containing a chain dienol carboxylate structure is obtained with high double bond cis-trans selectivity. The compound with the chain diene carboxylic ester structure is a chain compound with alternating single and double bonds, and has obvious and important application value in the fields of medicinal chemistry, analytical chemistry, synthetic chemistry and the like. The compound containing the chain-like dialkenyl carboxylic ester structure is a dienol ester compound, and has extremely wide and important application value in many fields such as choline active drug development, fluorescence detection and diagnosis molecular research, natural product synthesis and the like; according to the invention, an efficient synthesis means and a series of candidate compounds for further development can be provided for the development of diene alcohol ester functional molecules with high similarity.

A borate compound-containing composition soluble in hydrocarbon solvents. A composition containing base A, or a compound having a total carbon number of not less than 8 and represented by the formula (5):wherein R and R′ are each independently an optionally substituted C1-30 alkyl group, an optionally substituted C3-15 cycloalkyl group, or an optionally substituted C6-14 aryl group; anda borate compound represented by the following formula (1):wherein R1, R2, R3 and R4 are each independently a C6-14 aryl group substituted by one or more fluorine atoms or fluoro C1-4 alkyl groups; and[A-H]+ is a base A-derived cation. A method for producing a polymer, by polymerizing at least one kind of monomer selected from the group consisting of olefins and dienes by using the composition A as a cocatalyst.

The invention discloses a trifluoromethyl-containing polysubstituted phosphorus-doped six-membered ring phosphine oxide compound as well as a preparation method and application of the trifluoromethyl-containing polysubstituted phosphorus-doped six-membered ring phosphine oxide compound. A diene-containing three-stage phosphine oxide compound is used as a raw material, a trifluoromethyl reagent and a nucleophilic reagent are used, in the presence of a transition metal copper catalyst and a pyridine-oxazoline ligand, a free radical domino cyclization reaction is initiated to obtain the compound, C-O, C-N and C-C coupling is realized, and the variety of the nucleophilic reagent can be changed, so that the structure of the product is diversified. The diastereoisomers can be separated, the yield of a single diastereomer can reach 85%, and the diastereoisomers have excellent diastereoselectivity. The invention provides a novel reaction mode of constructing a polysubstituted phosphorus-doped six-membered ring by mediation of free radicals, the reaction condition is mild, the operation is simple, the substrate universality is good, a novel skeleton structure of an organic phosphine reagent is provided, and the variety diversity of the organic phosphine reagent is expanded. The synthesized compound can be used as a catalyst to be applied to Appel reaction, and has a good application prospect.

The invention relates to the technical field of cable accessories, in particular to a high-strength cable accessory and a preparation method thereof. The high-strength cable accessory comprises a semiconductor layer and an insulating layer, and the semiconductor layer is prepared from, by weight, 10-15 parts of low-density polyethylene, 75-85 parts of polyolefin thermoplastic elastomer, 8-12 parts of ethylene propylene diene monomer, 25-40 parts of silane coupling agent grafted graphene nanosheets and 4-6 parts of maleic anhydride grafted modified ethylene-octylene copolymer. The composition comprises the following components in parts by weight: 1.0-2.0 parts of zinc stearate, 1.0-2.0 parts of an antioxidant, 2.0-3.5 parts of trimethylolpropane trimethacrylate and 1.5-2.2 parts of dicumyl peroxide. According to the high-strength cable accessory provided by the invention, the overall mechanical property, thermal stability and conductivity of the composite material and the mechanical strength, breakdown field strength and insulating property of the insulating layer are improved.

Provided is an aqueous based styrene-diene polymer emulsion composition including: i) from 2 to 50 wt. % of one or more polymers including linear polymers characterized by the formula:star polymers characterized by the formula:or combinations thereof; wherein D′, PA, D″, n and X are defined herein; ii) from 0.05 to 5.0 wt. % of one or more surfactants; and iii) the remainder of the composition comprising water. Also provided are an electrode slurry composition for a secondary metal ion battery composition, a secondary metal ion battery anode, a method of improving the life of a secondary metal ion battery, a method of making an aqueous based styrene-diene polymer emulsion composition, and a method of making an electrode slurry composition for a secondary metal ion battery.

The invention discloses a preparation method of a cannabidiol compound, the method synthesizes the cannabidiol compound from a resorcinol derivative and menthyl-2, 8-diene-1-ol under the catalysis of a condensing agent, and the method has the advantages of simple operation, high alkylation reaction site selectivity and the like, and is suitable for being developed into a large-scale production process.