34results about How to "Excellent extrusion performance" patented technology

The invention discloses an end chain functional graphene modified intelligent energy cable, a shielding material and a manufacturing method thereof. The cable sequentially comprises a cable core, a wrapping tape and an outer sheath from interior to exterior, wherein the cable core comprises one or three insulated cable cores; each insulated cable core sequentially comprises a conductor, an end chain functional graphene modified conductor shielding layer, an insulating layer, an end chain functional graphene modified insulated shielding layer and a copper strip shielding layer from interior to exterior; and the end chain functional graphene modified conductor shielding layer, the insulating layer and the end chain functional graphene modified insulated shielding layer are of a three-layer co-extrusion structure. According to the cable disclosed by the invention, the conductor shielding and insulating and smooth and gap-free conductor shielding effects are achieved, so that the safety operation capacity of the cable is improved. Meanwhile, the end chain functional graphene can be uniformly and stably dispersed in a composite material, so that the long-time safety operating stability is further improved.

A halogen-free flame-retardant cable material is disclosed. The cable material comprises following raw materials by weight: 60-80 parts of LDPE resin, 15-25 parts of EPDM resin, 5-15 parts of EVA resin, 70-90 parts of aluminium hydroxide, and 6-8 parts of red phosphorus. The cable material is excellent in extrusion process property, high in LOI value and good in flame retardant property.

The invention relates to an ethylene propylene diene rubber for an air outlet pipe of an intercooler. The rubber composition consists of ethylene propylene diene rubber, zinc oxide, polyethylene glycol, an anti-ageing agent RD, coumarone, carbon black, paraffin oil, an accelerating agent and sulfur. A preparation method of the rubber composition comprises the following steps of: selecting a rubber extruder, controlling the length-diameter ratio of a screw rod at 11-15, and controlling the temperature at each stage of the extruder, wherein the temperature of a handpiece is 60-80 DEG C, the temperature of an extruding section is 50-70 DEG C, the temperature of a plasticizing section is 50-70 DEG C, and the temperature of a feeding section is 50-60 DEG C; controlling the temperature of circulating water at 15+/-5 DEG C, cooling and sizing a rubber pipe, cutting length, and standing for later use; and sleeving a semi-finished product on a mandrel of a fixed specification, and entering a steam vulcanizing tank for vulcanizing at the vulcanizing temperature of 150-170 DEG C for 15-40 minutes. An air outlet rubber pipe of the intercooler processed by using gross rubber produced with the method has the advantages of low price, appropriate performance, simple production process, high efficiency, excellent ageing resistance and high ozone resistance, and better meets the current use requirements.

The invention discloses a production process for an ethylene propylene diene monomer microporous base plate. The production process comprises the following steps: adding ethylene propylene diene monomer into a kneading machine to knead, and then adding zinc oxide, stearic acid, carbon black, a moisture absorbent, an acid and alkali regulator, a softening agent and an inorganic filler into the kneading machine to knead, thereby preparing a master batch; adding the prepared master batch into an open mixing machine, adding a vulcanizing agent, a promoter, a foaming agent and a foaming aid, uniformly mixing, regulating roll spacing to 0.8-1.3 millimeters for thin-passing, carrying out triangular packaging for 3-4 times, regulating the roll spacing to 5-6 millimeters for discharging, so as to prepare a rubber compound, and standing the rubber compound for not smaller than 16 hours; putting the rubber compound on a cutter for cutting; feeding prepared rubber strips into a cold feeding extruder to extrude; sequentially feeding the prepared rubber strips into a high-temperature section, a microwave section and an oven section to carry out continuous vulcanizing until complete vulcanizing; and pulling the prepared vulcanized rubber into the cutter through a pulling machine, and cutting the prepared vulcanized rubber into a needed dimension, thereby obtaining a microporous base plate finished product. The invention further provides an ethylene propylene diene monomer microporous base plate.

The invention discloses a cable material with high expansion force, and is characterized in that the cable material comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 40-50 parts of PVC resin, 15-20 parts of PBT resin, 15-18 parts of dibutyl phthalate, 10-12 parts of benzoyl peroxide, 7-10 parts of dipentaerythritol hexaacrylate, 2-4 parts of a silane coupling agent, 0.6-0.8 part of an antibacterial agent, 10-15 parts of straw ash, 3-5 parts of graphite, 3-5 parts of an anti-aging agent, 16-18 parts of a filling material, and 4-6 parts of silicone rubber. The cable material extends the aging resistance of the cable material, the filling material has the advantages of stable chemical structure, good gelation ability and high expansion ability, prolongs the service life of a cable, and saves the resources; a copper body is protected from avoiding oxidation, the copper body cannot be damaged, the service life is extended, the cost is saved, and the efficacy is improved; the addition of the straw ash, the requirements of the standards on environmental protection are met; and the extrusion process performance is excellent.

The object of the invention is to provide a flame-retardant fatigue-resistant cable material and belongs to the technical field of cable manufacture. The flame-retardant fatigue-resistant cable material is prepared from the following raw materials in parts by weight: 50-75 parts of low-density polyethylene (LDPE) resin, 10-20 parts of ethylene propylene diene monomer (EPDM) resin, 5-10 parts of ethylene-vinylacetate copolymer (EVA) resin, 90-110 parts of polyvinyl chloride (PVC) resin, 70-80 parts of aluminum hydroxide, 8-10 parts of red phosphorus, 60-80 parts of dioctyl phthalate, 0.5-1.0 part of erucyl amide, 3-5 parts of zinc stearate and 50-60 parts of heavy calcium carbonate. The flame-retardant fatigue-resistant cable material is excellent in extrusion property, has good flame retardance and good fatigue resistance and is long in service life and easy to produce and manufacture.

The invention discloses a low-smoke halogen-free flame-retardant rubber for cables and a preparation method thereof. The material is made of the following raw materials in parts by weight: 20-25 parts of low-density polyethylene, 15-25 parts of ethylene-vinyl acetate copolymer 20 parts, 12-18 parts of TPU thermoplastic elastomer, 45-55 parts of mixed thermoplastic phenolic resin, 45-55 parts of modified nano-magnesium hydroxide, 45-55 parts of microencapsulated red phosphorus, 1-2 parts of cross-linking agent, 1~2 parts of calcium stearate, 1~2 parts of stearic acid, 0.2~0.4 parts of ultraviolet absorber UV~531, 8~15 parts of smoke suppressant, 20~40 parts of compatibilizer, 7~10 parts of processing aid 3-6 parts of antioxidant, 1-3 parts of anti-termite agent, appropriate amount of deionized water. The invention has excellent flame retardancy and non-flammability; when burning, the amount of smoke is very small, no toxic gas is produced, no corrosive gas is produced, and at the same time it has good low temperature resistance and ultraviolet resistance.

The invention relates to a cable material, in particular to a wear-resistant and fatigue-resistant cable material containing styrene thermoplastic elastomer, which belongs to the technical field of cable manufacturing. A wear-resistant and fatigue-resistant cable material containing styrene-based thermoplastic elastomer, comprising the following components in parts by weight: 50-60 parts of styrene-based thermoplastic elastomer, 25-35 parts of EPDM rubber, polyethylene masterbatch 5-10 parts, 4-8 parts of zinc oxide, 2-5 parts of monoalkoxy titanate, 5-15 parts of SG-3 polyvinyl chloride, 0.2-0.6 parts of silane coupling agent, 2-4 parts of ferrocene 10-20 parts of zinc hydroxide, 1-5 parts of compatibilizer. The invention has excellent extrusion performance, good wear resistance, good fatigue resistance, long service life and easy production.

The invention provides an extrusion-grade fluororubber premix with low fuel oil permeability and a preparation method thereof, and solves the technical problems of high fuel oil permeability, poor extrusion processability and poor composite bonding performance with other rubber of an automobile fuel oil rubber hose prepared from an existing fluororubber material. The fluororubber premix is prepared from the following raw materials in parts by weight: 100 parts of fluororubber raw rubber, 1.2 to 2.5 parts of a vulcanizing agent, 0.2 to 1.0 part of a vulcanization accelerator, 1-6 parts of an extrusion processing aid, and 0.5-3 parts of a technological processing aid. The fuel oil permeability is improved by selecting the fluorine content of the fluororubber raw rubber; the composite bondingperformance with other rubber is improved by selecting a vulcanization accelerator; the extrusion processability is improved by selecting fluororubber raw rubber with wide distribution and bimodal distribution and an extrusion processing aid. The environment emission standard is met, so that the method is widely applied to the rubber pipe industry with more strict requirements.

The invention discloses a low-smoke flame-retardant cable material and a preparing method thereof. The material is prepared from, by weight, 20-25 parts of low-density polyethylene, 15-20 parts of ethylene-vinyl acetate copolymer, 12-18 parts of EVA resin, 45-55 parts of modified nano-magnesium hydroxide, 0.2-0.4 part of nano aluminum nitride powder, 1-2 parts of a cross-linking agent, 1-2 parts of calcium stearate, 1-2 parts of stearic acid, 0.2-0.4 part of ultraviolet light absorber UV-531, 8-15 parts of smoke inhibitor, 20-40 parts of compatilizer, 7-10 parts of a processing agent, 3-6 parts of antioxidant, 1-3 parts of a temite resisting agent and an appropriate amount of deionized water. The low-smoke flame-retardant cable material has excellent flame retardance and non-combustion-delay performance, fuming amount is small during combustion, toxic gas and corrosive gas are not generated, and the low-smoke flame-retardant cable material is good in low temperature resistance and ultraviolet resistance.