66results about How to "Lower embrittlement temperature" patented technology

The invention discloses a cable sheath material for a coal mine, which is characterized by comprising the following raw materials for preparing effective constituents according to the parts by weight: 70-100 of butyronitrile-polyvinyl chloride compound, 10-30 of neoprene, 30-60 of white carbon black, 2-8 of magnesium oxide, 20-60 of aluminum hydroxide, 30-60 of chlorcosane, 2-6 of accelerant CZ, 3-8 of zinc oxide, 1-5 of stearic acid, 3-8 of age inhibitor, 4-15 of diantimony trioxide, 2-7 of titanium pigment and 3-9 of vulcanizing agent. The cable sheath material for the coal mine has better performance of stink resistance, cold resistance, flame resistance, oil resistance, ageing resistance, and the like and has good elasticity, high tensile strength, good tear resistance, good extrusion performance and low cost.

The present invention is polyethylene modified asphalt agglomerate and its making process. The material includes the components of polymer 50-85 wt%, asphalt 10-35 wt%, grafting modifier 0.5-3.0 wt%, chemical initiator 0.1-1.0 wt%, crosslinking agent 1.0-3.0 wt%, compatibilizer 1.0-4.0 wt% and assistant 0.1-8.0 wt%. The preparation process includes mixing the polymer and the assistant inside a mixer, heating to melt asphalt, and adding all the components into a double-screw extruder to prepare modified asphalt agglomerate. The modified asphalt agglomerate has high elasticity restoring rate, high strength, high weather resistance, simple preparation process, and low production cost.

The invention provides a polystyrene resin-based composite material. The polystyrene resin-based composite material comprises, by weight, 45 to 65 parts of polystyrene resin, 10 to 14 parts of chlorine ether rubber, 5 to 9 parts of uvarovite powder, 5 to 8 parts of a fire retardant, 2 to 5 parts of a light stabilizing agent, 1 to 2 parts of an antistatic agent, 2 to 7 parts of a plasticizer, 2 to 3 parts of a lubricant, 1 to 3 parts of a heat stabilizer, 2 to 5 parts of a compatilizer and 0.4 to 0.5 part of a nucleating agent. The invention further discloses a preparation method for the polystyrene resin-based composite material. The polystyrene resin-based composite material provided by the invention has good cold resistance, high temperature resistance, oxidizability and toughness.

The invention provides a novel pipeline which is suitable for non-excavation engineering, and the product is prepared from the following components by weight ratio: 100 parts of B-85 type PVC resins, 3-5 parts of compound lead stabilizing agents, 3-5 parts of acrylic acid resins, 5-7 parts of chlorinated polyethylene or MBS resins, 1-3 parts of plasticizers, 0.5-2 parts of lubricants, 1.5-3 parts of fire retardants, 0.5-2 parts of anti-oxidants, 7-15 parts of alkali-free short glass fibers, and 0-5 parts of color masterbatch. The pipeline has good toughness and the fracture percentage elongation reaches more than 350, and the fracture yield strength reaches more than 50 MPa; the pipeline has good rigidity, and the wall is twice or three times as thick as the wall of pipeline made from polypropylene material; the product has good recovery rate and small permanent compression deformation; the product has good acid and alkali resistance capabilities, and the components mainly do not have inorganic filling materials, so the underground acid and alkali environment has little corrosion to the pipeline; the joint employs rivet or special-purpose glue, thereby the joint has high intensity and can be used for non-excavation engineering; the product has aging resistance with long usage life, and the can be better applied to non-excavation engineering.

A disclosed low-temperature-resistant insulation cable sheath material is prepared as follows: putting polyvinyl chloride, ethylene-propylene-diene monomer and ethylene-vinyl acetate copolymer in a plasticizing machine for plasticizing and obtaining a first material; performing fusion mixing on methacrylic acid-grafted high-density polyethylene and bentonite in a rheometer to obtain a second material; sending the first material and the second material to a mixer for uniform mixing, then heating to 80-85 DEG C, successively adding an anti-oxidant, dioctyl sebacate, N,N'-ethylene bis(stearamide), zinc stearate, microencapsulated red phosphorus and modified kaolin, heating to 125-135 DEG C, adding a coupling agent titanate and gamma-aminopropyltrimethoxysilane, continuing to stir and mix until no powder attaches to a hand when a hand touches the powder, and after mixing is finished, performing plastic extrusion and pelletizing to obtain the low-temperature-resistant insulation cable sheath material. The above low-temperature-resistant insulation cable sheath material is excellent in cold resistance, high in mechanical strength and thermal distortion temperature and good in thermal stability.

The invention discloses a low temperature resistant environmentally-friendly sealant. The low temperature resistant environmentally-friendly sealant comprises the following raw materials in parts by weight: 42 to 46 parts of blocking polydimethylsiloxane, 28 to 32 parts of modified epoxy resin, 14 to 18 polytetrafluoroethylene, 16 to 22 parts of silica fume, 8 to 14 parts of a cross-linking agent,6 to 10 parts of a binder, 5 to 9 parts of a king sundew, 6 to 10 parts of epoxidized soybean oil, 1 to 3 parts of p-phenylenediamine and 2 to 6 parts of butyl cellosolve. According to the low temperature resistant environmentally-friendly sealant provided by the invention, compared with the prior art, the low temperature resistance of the sealant is greatly improved, and the sealant has preferable use value and good application prospect.

The invention discloses road asphalt. The road asphalt is prepared from the following components by weight percentage: 80-100 parts of asphalt, 3-15 parts of styrene butadiene rubber, 2-5 parts of neoprene, 2-5 parts of isoprene rubber, 2-6 parts of polystyrene, 0.3-3 parts of N-isopropyl-N-phenyl-p-phenylenediamine, 0.5-5 parts of dimethyl phthalate, 0.1-1 part of p-tolualdehyde, 3-10 parts of mica powder, 1-7 parts of sodium alkyl benzene sulfonate, 3-8 parts of polyvinyl alcohol and 1-3 parts of caustic soda. The road asphalt has a good interlayer bonding degree, the high-temperature stability performance of the asphalt can be effectively improved, and meanwhile, the brittleness temperature is decreased so that the low-temperature anti-cracking performance of the asphalt can be improved; the asphalt is high in viscosity, resistant to high temperature and good in waterproof property, and has high ability of resisting high-temperature and rainy weather, and thus, the damage rate of roads is greatly decreased.

The present invention provides a low temperature resistant EPDM (ethylene-propylene-diene monomer) cable material comprising the following components by weight: 100 parts of EPDM, 9-14 parts of ECO rubber, 4-5 parts of MMA, 0.3-0.5 parts of a crosslinking agent, 8-12 parts of EVA, 3-8 parts of a compatilizer, 2.5-4.5 parts of a vulcanizing agent, 1.5-3 parts of a co-vulcanizing agent, 70-90 parts of a packing, 0.1-0.2 part of a coupling agent and 1-2 parts of an antiager. The present invention also provides a preparation method of the cable material. The low temperature resistant EPDM (ethylene-propylene-diene monomer) cable material has good low temperature resistance.

The invention discloses a high-impact-resistance glass fiber reinforced polypropylene material and a manufacturing process thereof, and belongs to the field of polymer modified materials. The high-impact-resistance glass fiber reinforced polypropylene material is a composite material and comprises a modified PP material of a middle main body part and glass fiber gridding cloth glued to the upper face and the lower face of the modified PP material. The modified PP material is prepared from the following components: 5 parts of a polypropylene raw material, 4 parts of glass fiber powder, 0.7 part of butadiene rubber, 0.01 part of a nucleating agent, 0.01-0.02 part of a coupling agent and 0.27-0.28 part of a toughening agent. The glass fiber reinforced polypropylene material with high impact resistance is low in manufacturing cost, has high-strength impact resistance and toughness, can replace traditional tempered glass to intercept objects falling from high altitudes, and effectively prevents the objects falling from high altitudes from hurting people.

The invention provides a long-acting cold-resistant cable material and a preparation method thereof, and relates to the technical field of cable processing. The long-acting cold-resistant cable material is prepared from the following raw materials in parts by weight: 15-20 parts of ABS resin, 8-12 parts of ethylene propylene diene monomer, 10-15 parts of polytetrafluoroethylene, 6-8 parts of fluororubber, 2-3 parts of dimethyl silicone polymer, 3-5 parts of hexanedioic acid dibutyl diglyceride, 2-4 parts of ethoxyethoxyethyl acrylate, 1-2 parts of dodecanedioic acid, 2-4 parts of basalt powder, 2-4 parts of gas phase white carbon black, 1-1.2 parts of a cross-linking agent, 1-1.6 parts of a lubricating agent, and 0.8-1.2 parts of an antioxidant.

The invention relates to a jet flame and hydrocarbon flame resistant medium-voltage cable for an offshore oil platform and a manufacturing method thereof. A semi-conductive conductor shielding layer,an insulating layer and a semi-conductive insulating shielding layer wrap the periphery of a stranded tin-plated annealed copper conductor from inside to outside in a three-layer co-extrusion mode; atinned copper wire shielding layer is woven on the periphery of a semi-conductive insulation shielding layer to form a shielding wire core, a plurality of shielding wire cores are twisted to form a cable core, an inner silicone oil layer is extruded on the periphery of the cable core, an inner lining layer is extruded on the periphery of the inner silicone oil layer, a fireproof wrapping tape is wrapped on the periphery of the inner lining layer, and an armor layer is wrapped on the periphery of the fireproof wrapping tape; the periphery of the armor layer is extruded with an outer silicone oil layer, the periphery of the outer silicone oil layer is extruded with a jet flame and hydrocarbon flame resistant inner sheath, and the periphery of the jet flame and hydrocarbon flame resistant inner sheath is extruded with a slurry resistant cross-linked polyolefin outer sheath. The cable adopts a double-layer composite sheath, can bear high-temperature flame of 1300 DEG C for 120 minutes under rated voltage, and does not have a grounding fault or a short circuit.

The invention provides a resin material for a high-toughness urine bag catheter, and a preparation method thereof, and relates to the technical field of urethral catheterization bag processing, wherein the resin material is prepared from the following raw materials by weight: 45-55 parts of a PVC resin, 18-22 parts of polyformaldehyde, 4-8 parts of polyphenylene sulfide, 10-12 parts of polycarbonate, 6-8 parts of carboxylated nitrile rubber, 1-3 parts of nanometer dilanthanum trioxide, 2-3 parts of hydroxyapatite, 1-1.8 parts of 1,2-dimethoxybenzene, 4-6 parts of maleic anhydride, 2-2.5 partsof N,N'-di-tert-butylethylenediamine, 3-5 parts of benzoguanamine, 1-1.2 parts of a vulcanizing agent, 1-2 parts of an antioxidant, and 1-1.8 parts of a dispersing agent. According to the present invention, the deficiencies in the prior art are overcome, the toughness and the tensile strength of the resin material for the conventional urine bag catheter are improved, the embrittlement temperatureis reduced, the softness is increased so as to be conveniently used, and the method is suitable for popularization and production.