47results about How to "Excellent compression set resistance" patented technology

The invention discloses a low smoke zero halogen thermoplastic elastomer flame-retardant cable material which comprises the following components in weight ratio: 100 parts of ethylene-propylene diene monomer rubber, 50-200 parts of SEBS503 and/or maleic anhydride grafted SEBS, 55-100 parts of reinforcing agent, 100-300 parts of plasticizing and softening agent, 0-5 parts of pigment, 8-12 parts of auxiliary agent, 1-4 parts of cross-linking agent, 150-550 parts of flame retardant agent and 40-150 parts of liquid reinforcing and softening rubber. The preparation method of the material comprises the following steps of: firstly, mixing, plasticating, cooling and granulating the SEBS 503 and/or maleic anhydride grafted SEBS, the plasticizing and softening agent, the reinforcing agent, the pigment and the ethylene-propylene diene monomer rubber particles to prepare thermoplastic elastomer master batch; then, mixing the thermoplastic elastomer master batch with the auxiliary agent, the flame retardant agent and the liquid reinforcing and softening rubber, adding into a mixer, and stirring uniformly; and finally, mixing, plasticating, cooling and granulating to obtain a finished product. The product does not contain halogen, has excellent flame retarding efficacy and is not embrittled and hardened under the low temperature condition of subzero 40 DEG C. The preparation method has simple equipment and technology and does not have any three wastes discharge or environmental pollution.

Gaskets, including aircraft gaskets, are disclosed, the gaskets having an elastomeric gel body and substantially incompressible skeletons. The bodies may be pliable and deformable and, in one example, may be comprised of a two-part chemically cured polyurethane that sets up as a gel after mixing with the web so that it is fully integral with the web and so that there is substantially no air bubbles or air pockets left in the web. The web may be a regular shaped web and made of nylon.

The invention relates to a thermoplastic elastomer material for secondary overmolding and a preparation method of the thermoplastic elastomer material. The thermoplastic elastomer material for secondary overmolding is prepared from the following components in parts by mass: 55 to 95 parts of segmented copolymer, 2 to 35 parts of mineral oil, 5 to 40 parts of ethylene propylene diene terpolymer-polypropylene alloy thermoplastic elastomer, 1 to 20 parts of maleic anhydride-grafted polymer and 5 to 20 parts of mineral filler, wherein the segmented copolymer is selected from at least one of a styrene-ethylene-butadiene-styrene block copolymerized elastomer, a styrene-butadiene-styrene block copolymer and a styrene-butadiene block copolymer. The thermoplastic elastomer material for secondary overmolding is higher in stripping strength.

The invention discloses a heat resistant, wear-resistant and tear-resistant cable sheath. The heat resistant, wear-resistant and tear-resistant cable sheath is prepared, by weight, 20-30 parts of modified phenolic resin, 30-40 parts of epichlorohydrin rubber, 40-50 parts of boron-silicon rubber, 0.4-0.6 part of 3,6,9-triethyl-3,6,9-trimethyl-1,4,7-triperoxynonane, 2-4 parts of sulphur, 1-1.5 parts of accelerant MZ, 0.8-1.3 parts of accelerator TMTD, 3-4 parts of zinc oxide, 0.5-1 part of zinc carbonate, 1-2 parts of magnesium oxide, 20-40 parts of talcum powder, 20-25 parts of montmorillonite, 20-30 parts of kaolin, 2-4 parts of jute fiber, 1-1.5 parts of silane coupling agent, 2-5 parts of chlorinated paraffins, 1-2 parts of dimethyl phthalate, 1-2 parts of antioxidant 8PPD and 0.8-1.4 parts of antioxidant BLE. The heat resistant, wear-resistant and tear-resistant cable sheath has excellent wear resistance, tear resistance, weather resistance and flame resistance.

The invention discloses a high-abrasion resistance and high temperature-resistant cable sheath material, which is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified phenolic resin, 25 to 35 parts of carboxylic-acrylonitrile-butadiene rubber, 30 to 50 parts of epichlorohydrin rubber, 0.8 to 1.4 parts of 1,1-bis-( tertiary butyl peroxide)-3,3,5-trimethyl-cyclohexane, 0.2 to 0.4 part of brimstone powder, 0.5 to 0.8 part of accelerator TMTM, 1.2 to 1.5 parts of accelerator CZ, 10 to 20 parts of magnesium oxide, 30 to 35 parts of furnace black, 20 to 30 parts of sea-foam stone powder, 10 to 20 parts of calcium metasilicate, 1 to 3 parts of trimellitic acid-3-(n-octyl n-decyl adipate), 4 to 5 parts of epoxy-cottonseed butyl oleate, 1 to 3 parts of antiager DFC-34 and 0.5 to 1.5 parts of antiager MBZ. The high-abrasion resistance and high temperature-resistant cable sheath material disclosed by the invention has excellent high temperature resistance and abrasion resistance and is high in stability and long in service life.

The invention aims at providing a heat-curable polyurethane resin composition and a urethane elastomer molded article using the same advantaged by excellent compression set resistance performance and low hardness. The invention relates to a heat-curable polyurethane resin composition and a urethane elastomer molded article using the same, which are characterized in that, the heat-curable polyurethane resin composition comprises a polyurethane prepolymer (1) with an isocyanate group terminated and a triamine with an amine equivalent of 50-350, the polyurethane prepolymer is obtained via polyhydric alcohol (A), polyisocyanates (B), and terminating agents (C) as necessary raw materials.

The invention discloses a high wear-resistant high-tenacity rubber sealing element which comprises the following raw materials in parts by weight: 30-50 parts of epichlorohydrin rubber, 12-20 parts of methyl vinyl silicone rubber, 20-30 parts of nitrile rubber, 6-12 parts of kieselguhr, 4-8 parts of calcium carbonate, 2-4 parts of magnesium oxide, 12-16 parts of bismuth oxide, 10-20 parts of barium metaborate, 8-16 parts of a glass bead, 4-8 parts of modified aupoz fiber, 2-4 parts of a dimethyl silicone polymer, 3-6 parts of methylphenyldiethoxysilane, 4-8 parts of an epoxidized fatty acid methyl ester, 1-3 parts of magnesium stearate, 2-4 parts of diisononyl phthalate, 0.4-1 part of triallylisocyanurate, 2-4 parts of zinc diacrylate and 1.5-3 parts of dicumyl peroxide. The high wear-resistant high-tenacity rubber sealing element not only has excellent wear resistance and tenacity, but also has very good high temperature resistance, and meanwhile, the sealing element is difficult to age and long in service life.

The invention discloses high-flame-retardance and high-toughness expandable polystyrene which comprises the following raw materials in parts by weight: 95-105 parts of styrene, 20-30 parts of ethylene-propylene-diene monomer rubber, 25-35 parts of polyethylene, 150-170 parts of water, 0.3-0.4 parts of dibenzoyl peroxide, 0.05-0.1 parts of tert-butyl peroxybenzoate, 0.2-0.3 parts of dicumyl peroxide, 2-5 parts of nano calcium silicate, 0.02-0.04 part of a silane coupling agent KH560, 2-4 parts of polyvinyl alcohol, 1-3 parts of cellulose ether, 2-8 parts of nekal, 0.05-0.15 parts of a defoamer, 0.2-0.5 parts of an antioxidant, 0.4-1.2 parts of a flame retardant and 7-12 parts of a foamer. The high-flame-retardance and high-toughness expandable polystyrene disclosed by the invention is excellent in flame-retardant and heat-resistant performance, good in toughness and excellent in impact resistance.

The invention belongs to the technical field of coal mining and discloses a fully mechanized mining surface end airbag type air leakage rapidly blocking device. According to the fully mechanized mining surface end airbag type air leakage rapidly blocking device, an airbag is made of thermoplastic rubber (TPR), which is an SEBS-based (saturated styrene-butylene-styrene-based) modified material andhas high anti-ageing performance, so that the airbag can be plastic and high in elasticity and mean while achieve good thermal resistance, compressive deformation resistance and excellent mechanical performance; the inflating structure of the airbag is composed of two parts, namely a front main airbag and a side auxiliary airbag, wherein the main airbag can fill up a relatively regular large-areafree space, and the auxiliary airbag can fill up a narrow space complicated in structure to ensure the blocking effects of the fully mechanized mining surface end airbag type air leakage rapidly blocking device. The fully mechanized mining surface end airbag type air leakage rapidly blocking device solves the problem of spontaneous combustion of residual coal in goafs which is caused by air leakage and the upper end and the lower end of a fully mechanized mining surface.

Provided is a crosslinkable rubber composition which contains (A) a carboxyl group-containing nitrile rubber that has an iodine number of 120 or less, (B) a polyamine crosslinking agent and (C) a specific basic crosslinking accelerator. In this connection, the basic crosslinking accelerator (C) is preferably dicyclopentyl amine or dicyclohexyl amine.

The invention discloses a cable protective sheath material. The cable protective sheath material is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified phenol-formaldehyde resin, 25 to 35 parts of carboxyl nitrile butadiene rubber, 30 to 50 parts of chlorohydrine rubber, 0.8 to 1.4 parts of 1,1-bi-(tert-butylperoxyl)-3,3,5-trimethyl-cyclohexane, 0.2 to 0.4 part of sulfur powder, 0.5 to 0.8 part of an accelerant TMTM (Tetramethyl Thiuram Monosulfide), 1.2 to 1.5 parts of an accelerant TZ, 10 to 20 parts of magnesium oxide, 30 to 35 parts of furnace carbon black, 20 to 30 parts of sepiolite powder, 10 to 20 parts of calcium silicate, 1 to 3 parts of tri(n-octyl n-decyl) trimellitate, 4 to 5 parts of epoxy cottonseed butyl oleate, 1 to 3 parts of an anti-ageing agent DFC-34 and 0.5 to 1.5 parts of an anti-ageing agent MBZ (Mebendazole). The high-wearing-resisting and high-temperature-resisting cable protective sheath material provided by the invention has excellent high temperature resistance and wearing resistance and has good stability and long service life.

The invention discloses a high-toughness polyvinyl chloride pipe, the raw materials of which include by weight: 35-42 parts of polyvinyl chloride, 10-18 parts of polyurethane rubber, 20-30 parts of butyl rubber, and 20-30 parts of filling and reinforcing agent 1-2 parts of epoxidized soybean oil, 1-2 parts of magnesium stearate, 1-2 parts of triphenyl phosphate, 1.5-3 parts of compatibilizer, and 2-4 parts of crosslinking agent. The high-toughness polyvinyl chloride pipe provided by the invention has good toughness, high pressure resistance, high flexural strength, and excellent high-temperature stability.

The present invention provides a medical rubber having high cleanliness and excellent compression set resistance. The present invention relates to a medical rubber including an ethylene-propylene-diene rubber crosslinked by an organic peroxide having no aromatic ring structure.

The invention relates to a thermoplastic elastomer composition as well as a preparation method and application thereof. The thermoplastic elastomer composition is prepared from the following raw materials in parts by weight: 5 parts to 30 parts of a styrene block copolymer, 10 parts to 35 parts of white mineral oil, and 10 parts to 60 parts of a plasticizer, wherein the content of polystyrene in the styrene block copolymer is 15%-45%; the number average molecular weight of the styrene block copolymer is 50000 g/mol to 300000 g/mol; and the kinematic viscosity of the white mineral oil at the temperature of 40 DEG C is 5 mPa*s to 180 mPa*s. The thermoplastic elastomer composition is soft in hand feeling, dry and comfortable in surface, not easy to mildew, stain-resistant, not easy to dry and solidify, good in rebound resilience and strong in bare-handed plasticity, can be stored for a long time, can be recycled and has a wide application prospect.

The invention relates to the field of rubber materials, in particular to a novel rubber material of a run-flat tire. The novel rubber material is prepared from the following raw materials by weight percent: 25 to 40 percent of SEBS, 40 to 48 percent of white mineral oil, 7.5 to 10 percent of POE elastomer, 15 to 28 percent of copolymer PP, and 0.1 to 2 percent of antioxidant. The invention provides the novel rubber material of the run-flat tire which is resistant to high temperature and aging.

The invention discloses a rubber composition, a processing method, a product adopting the rubber composition and a production method. The rubber composition comprises a rubber matrix and necessary components, wherein the rubber matrix comprises the following components: branched polyethylene with the content a being greater than 0 and smaller than or equal to 100 parts, and ethyene-propylene rubber and ethylene propylene terpolymer with the content b being greater than or equal to 0 and smaller than 100 parts; the necessary components comprise the following components: 1 to 10 parts of a cross-linking agent, and 5 to 50 unsaturated carboxylic metal salt. The rubber composition has the benefits that the rubber composition can be applied to rubber products, such as insulating gloves, heat resistance conveying belts and rubber tubes, and the rubber products have excellent mechanical property.