10 results about "Diene" patented technology

The invention discloses a phase change energy storage thermoplastic composite material, which comprises the following components in percentage by weight: 5 to 30 percent of polypropylene, 10 to 40 percent of ethylene-propylene-diene monomer (EPDM), 20 to 75 percent of paraffin, 0.5 to 10 percent of cross-linking agent, 0.01 to 2 percent of antioxidant, 0.01 to 10 percent of processing aid and 0 to 10 percent of crosslinking aid. The components are subjected to dynamic vulcanization in one step in melting mixing equipment to obtain the phase change energy storage thermoplastic composite material. The phase change energy storage thermoplastic composite material has the processing characteristics of thermoplastic plastics, and has high breaking elongation, moderate hardness and flexibility; and the paraffin is coated in the crosslinked EPDM to form microcapsules, and the phase change energy storage thermoplastic composite material is excellent in shape retaining performance and low in percolation ratio and has the better application prospects in fields of construction, chemical engineering, energy and the like.

Provided is a shaped article for clean rooms comprising a resin composition prepared by melt-kneading 100 parts by weight of a cyclic olefin polymer (A) having a glass transition temperature of from 60 to 200° C., from 1 to 150 parts by weight of a flexible copolymer (B) prepared by polymerizing at least two monomers selected from a group consisting of olefins, dienes and aromatic vinyl-hydrocarbons, and having a glass transition temperature of 0° C. or lower, from 0.001 to 1 part by weight of a radical initiator (C), and from 0 to 1 part by weight of a polyfunctional compound (D) having at least two radical-polymerizable functional groups in the molecule. The shaped article for clean rooms has good chemical resistance, heat resistance and dimensional accuracy, it is inhibited from releasing a volatile component around it, and it has good abrasion resistance and is inhibited from producing particles.

Disclosed herein is a release sheet including: a base material; and a release agent layer provided on the base material, wherein the release agent layer is formed by curing a material mainly constituted of a diene-based polymer and contains substantially no silicone compound, and wherein Mooney viscosity (ML₁₊₄ (100° C.)) of the diene-based polymer before curing which is measured according to JIS K6300 at a temperature of 100° C. is in the range of 40 to 70. It is preferred that the material before curing is mainly constituted of one or two or more diene-based polymers having a cis-1,4 bond content of 90 to 99%.

The invention discloses a high-temperature-resistant insulation material applied to power equipment. The high-temperature-resistant insulation material is prepared from the following components in parts by weight: 10-30 parts of polyethylene, 2-10 parts of polyperfluorinated ethylene propylene, 7-10 parts of mica powder, 3-6 parts of butyl rubber, 3-5 parts of inorganic glass fiber, 7-8 parts of ethylene-propylene-diene-terpolymer rubber, 3-10 parts of polytetrafluoroethylene powder, 3-10 parts of alkali-free glass fiber cloth, 3-10 parts of ultraviolet light absorbents, 3-10 parts of epoxy resin, 1.5-3.5 parts of antioxidants and 0.5-5.5 parts of plasticizers. The invention provides a high-temperature-resistant insulation material applied to power equipment and a preparation method thereof. The prepared insulation material has excellent mechanical property, insulation property and high-temperature-resistant property, also has water resistance, weathering ageing resistance and high abrasion resistance, and can meet the requirements of the power equipment on high-temperature resistance and excellent mechanical property.

The present invention provides a rubber composition for an undertread, the rubber composition achieving excellent low heat build-up and high elastic modulus when formed into a tire; and a pneumatic tire that includes the rubber composition. The rubber composition for an undertread contains a diene rubber and a carbon black. The diene rubber contains a natural rubber and a modified polymer that is obtained by reacting a nitrone compound with a double bond of a conjugated diene polymer. The content of the natural rubber in the diene rubber is 60 mass % or greater, the content of the modified polymer in the diene rubber is from 8 to 40 mass %, the content of the carbon black is from 30 to 67 parts by mass per 100 parts by mass of the diene rubber, and the nitrogen adsorption specific surface area of the carbon black is from 20 to 60 m²/g.

The invention discloses a wear-resistant engineering plastic. The wear-resistant engineering plastic is prepared from the following raw materials in parts by weight: 20-40 parts of polyethylene, 10-25 parts of polyvinylidene fluoride, 10-20 parts of polyurethane, 5-12 parts of phenolic resin, 10-20 parts of stearic acid, 3-10 parts of graphite, 1-5 parts of white carbon black, 2-10 parts of silicone rubber, 5-15 parts of ethylene-propylene-diene-terpolymer rubber, 0.5-5 parts of nanometer zirconium oxide, 0.5-3 parts of nanometer titanium dioxide and 1-6 parts of glass fiber. The prepared engineering plastic has significant and lasting wear-resistant effect and good mechanical property, the bending strength can reach over 130MPa, the tensile strength can reach over 110MPa and the wear rate is smaller than 0.8%.

The invention provides a flame-retardant ethylene propylene diene monomer, and relates to the technical field of high molecular materials. The flame-retardant ethylene propylene diene monomer is prepared from the following composition raw materials: 80 to 100 parts of ethylene propylene diene monomers, 20 to 25 parts of aluminum silicate fiber cotton, 23 to 28 parts of ore slag fiber cotton, 12 to 18 parts of sepiolite fiber cotton, 3 to 7 parts of vermiculite, 14 to 19 parts of expanded perlite, 8 to 13 parts of fiber cement boards, 3 to 8 parts of fiber enhanced calcium silicate boards, 5 to 12 parts of pentaerythrite oleate, 4 to 8 parts of abietic resin, 5 to 9 parts of boric acid, 11 to 15 parts of coronene, 6 to 10 parts of rhodium, 11 to 13 parts of asphalt coal tar, 9 to 16 parts of plasticizers and 17 to 22 parts of light stabilizers. The flame-retardant ethylene propylene diene monomer has the beneficial effects that the price of the raw materials is cheap; the manufacturing process is simple; the flame retardant effect of the prepared ethylene propylene diene monomer is good; no harm is caused on human bodies in the production process.