614 results about "EPDM rubber" patented technology

The invention relates to the field of sealing strips, and discloses a low-VOC (volatile organic compound) automobile sealing strip composite PVC (polyvinyl chloride) material and a preparation method thereof, the material comprises PVC resin, ethylene propylene diene monomer, a modified mesoporous ZIF-8 nano material, composite filler and the like; the modified mesoporous ZIF-8 nano material is prepared by grafting a hydroxylated antioxidant component on the surface of the mesoporous ZIF-8 nano material by using isophorone diisocyanate, and the hydroxylated antioxidant component is prepared by reacting N-(4-anilinophenyl) maleimide with 2-mercaptoethanol; the composite filler is prepared by grafting modified nano silicon dioxide and aminated basalt fiber, the modified nano silicon dioxide is prepared from phenylphosphoryl dichloride, diethanol amine, dibutyl phosphate and isophorone diisocyanate as raw materials, and the aminated basalt fiber is prepared by modifying with an aminated silane coupling agent; the modified mesoporous ZIF-8 nano material and the composite filler are added, so that the flame retardant property, the thermal aging resistance and the mechanical property of the material are improved.

The invention relates to the technical field of rubber materials, in particular to a high-wear-resistance EPDM rubber material and a preparation method thereof. The composite lignocellulose is obtained by adding lignocellulose, a sodium hydroxide solution and a tetraethoxysilane solution. And mixing the composite lignocellulose with 3-mercaptopropyltriethoxysilane, so as to obtain the modified lignocellulose. And mixing the nano silicon dioxide filler with 3-mercaptopropyltriethoxysilane, so as to obtain the modified SiO2 filler. Graphene oxide and a silane coupling agent KH570 are mixed, and the modified graphene filler is obtained. Mixing ethylene propylene diene monomer (EPDM), the modified lignocellulose and the modified SiO2 filler in advance to obtain pretreated rubber; and further mixing the pretreated rubber, the modified graphene filler and various auxiliaries to obtain a finished product. The finished product obtained by the invention has good wear resistance and mechanical properties, thereby having wide application prospects in the technical field of rubber materials.

The invention belongs to the field of novel composite materials, and particularly relates to a strong-ablation-erosion-resistant ceramizable flexible thermal protection material and a preparation method thereof.According to the material, ethylene propylene diene monomer serves as a matrix, polysilazane resin of a special structure serves as a ceramization modifier, and aerogel powder serves as heat insulation reinforcing filler. The thermal protection material provided by the invention can form a compact high-strength ceramic protection layer on the surface in a high-temperature environment, improves the structural strength of an ablation carbonization layer, effectively reduces the ablation degree of the material, has the characteristics of light weight, ablation resistance, scouring resistance, efficient heat insulation and the like, and can meet the protection requirements of high-performance engines of novel weaponry in the future.

The invention relates to the technical field of thermoplastic vulcanizates, and discloses a TPV sealing material and a preparation method thereof. The TPV sealing material is prepared from the following raw materials in parts by weight: 10 to 30 parts of PP resin, 40 to 60 parts of EPDM rubber, 10 to 20 parts of polylactic acid, 15 to 25 parts of filler, 0.5 to 1.5 parts of vulcanizing agent, 0.3 to 1.5 parts of vulcanization accelerator, 5 to 10 parts of compatilizer, 1 to 4 parts of modified heat stabilizer and 0.5 to 3 parts of modified anti-aging agent. Through preparation of the modified heat stabilizer, structural damage or sealing failure caused by thermal aging of a system can be reduced, and the service life of the sealing material is greatly prolonged; the preparation of the modified anti-aging agent can effectively resist the corrosion of environmental factors such as thermal oxidation and ozone to the system, and prevent the problems of cracking, hardening, elasticity attenuation, sealing failure and the like of the sealing material after long-term use.

The invention relates to the technical field of rubber compounds, and particularly discloses a bio-based and circulating material synergistically modified EPDM rubber compound and a preparation method thereof. The invention discloses a bio-based and circulating material synergistically modified EPDM rubber compound. The rubber compound is prepared from the following components: 100 parts of bio-based EPDM rubber, 100 to 130 parts of a reinforcing agent, 40 to 60 parts of paraffin oil, 5 to 7 parts of magnesium oxide, 0.5 to 1.5 parts of stearic acid, 6 to 8 parts of BIPB-40 peroxide, 2 to 5 parts of a Si-69 silane coupling agent, 1 to 3 parts of a dispersing agent and 1 to 3 parts of an assistant crosslinking agent, the reinforcing agent is composed of fast extruding furnace black N550, rice hull ash white carbon black and thermal cracking carbon black; and the assistant cross-linking agent is prepared from diallyl terephthalate and triallyl isocyanurate. The rubber compound prepared by utilizing the technical scheme provided by the invention can meet and maintain the mechanical property requirements, and meanwhile, carbon emission of the product in the whole life cycle is reduced from the aspects of formula and process.

The invention relates to the technical field of sealing strips, in particular to an anti-aging ethylene propylene diene monomer rubber sealing strip and a preparation method thereof. Comprising the following components in parts by weight: 150-180 parts of ethylene propylene diene monomer, 60-90 parts of carbon black, 8-12 parts of white carbon black, 3-8 parts of a peroxide vulcanizing agent, 6-12 parts of zinc oxide, 12-16 parts of magnesium-aluminum hydrotalcite, 10-18 parts of a plasticizer, 1-3 parts of a crosslinking aid, 1-3 parts of calcium stearate, 1-3 parts of an anti-aging agent and 1-3 parts of a silane coupling agent. The anti-aging agent is a mixture of an anti-aging agent AN245 and an anti-aging agent MBZ. By adding the anti-aging agent, the aging resistance of the ethylene propylene diene monomer can be remarkably improved by inhibiting oxidation and delaying the aging process, a high-crosslinking-density three-dimensional network is formed through the peroxide vulcanizing agent, breakage of molecular chains at high temperature is reduced, thermal aging is delayed, and the ethylene propylene diene monomer sealing strip with excellent aging resistance is prepared.

The invention discloses a corrosion-resistant protective sleeve for an aluminum alloy cable and a preparation method of the corrosion-resistant protective sleeve, and belongs to the field of cable protective sleeves. The corrosion-resistant protective sleeve for the aluminum alloy cable is prepared from the following raw materials in parts by mass: 40 to 50 parts of ethylene propylene diene monomer, 15 to 25 parts of fluorinated silicone rubber, 5 to 10 parts of modified thiolated ethylene-vinyl alcohol copolymer, 8 to 15 parts of metal fluoride nanocrystal, 4 to 8 parts of vulcanizing agent, 3 to 8 parts of plasticizer and 3 to 5 parts of flame retardant. The two rubber matrixes are compounded to form a physical barrier layer to prevent corrosion media and water molecules from permeating, material pores can be filled with the metal fluoride nanocrystals, diffusion channels of the corrosion media are reduced, and hydrophobicity and corrosion resistance are improved through cooperation of the metal fluoride nanocrystals and the fluorinated silicone rubber. The modified thiolated ethylene-vinyl alcohol copolymer can improve the compatibility between rubber matrixes and form coordination with metal ions of the metal fluoride nanocrystals, so that the diffusion path of a corrosive medium is prolonged, and the corrosion of the corrosive medium is synergistically blocked.

The present invention relates to the field of rubber processing, and more specifically, to an EPDM rubber preparation process. The process comprises the following steps: Step 1: heating a plurality of raw materials so that they are in a fluid state and then mixing; Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded products; Step 3: vulcanizing the inspected raw materials; Step 4: extruding and molding the rubber raw materials transported out after vulcanization, and completing the unloading and packaging. The EPDM rubber preparation process is realized by using EPDM rubber preparation, and the device comprises a molding frame for extruding and molding rubber, a door panel is slid on one side of the molding frame, and a plurality of circular plates are rotated on the molding frame, and a knife capable of cutting the rubber raw materials is slid on the plurality of circular plates. It can destroy the pores in the accumulated rubber raw materials.

The invention relates to the field of material technology, and discloses a low-density high-flame-retardant EPDM rubber composite material and a preparation method thereof. The invention can greatly improve the flame retardant performance of the EPDM rubber composite material by preparing a synergistic flame retardant with a special structure and cooperating with an inorganic flame retardant. The invention also solves the problem that the vulcanization speed of the EPDM rubber-plastic foaming is difficult to match with the foaming speed by controlling the type and amount of the vulcanizing agent. The prepared composite material has a low foaming density and fine pores.

The invention relates to the technical field of waterproof coiled materials, and provides an occlusion type lap joint prefabricated high-molecular waterproof coiled material and a preparation method thereof.The occlusion type lap joint prefabricated high-molecular waterproof coiled material sequentially comprises a cloth base material layer, an upper waterproof layer, a tire base layer, a lower waterproof layer and a first isolating membrane layer from top to bottom; the upper waterproof layer and the lower waterproof layer are respectively and independently prepared from the following components in parts by weight: 50 to 65 parts of polyolefin, 10 to 20 parts of metallocene polyolefin, 30 to 35 parts of ethylene propylene diene monomer, 30 to 45 parts of talcum powder, 30 to 40 parts of flame retardant, 1 to 3 parts of antioxidant, 0.5 to 1.5 parts of ultraviolet light absorber, 4 to 6 parts of pigment and 1 to 3 parts of compatilizer. According to the technical scheme, the problems of poor tensile property and poor aging resistance of the occlusion type lap joint prefabricated polymer waterproof coiled material in the related technology are solved.

A rubber composition having a nitrile and ethylene terpolymer, in particular a polymer blend of an acrylonitrile-butadiene copolymer (NBR) and an ethylene polymer. The composition has an NBR in an amount of from 30 to 50% by weight of the total composition. In some embodiments, the ethylene polymer is an EPDM rubber, an ethylene acrylic elastomer, or a chlorinated polyethylene. The composition may include an organic peroxide or other accelerator. The rubber composition can be used for synchronous belts having medium temperature to high temperature resistance, good fuel resistance, flexibility as low as-40 DEG C, and high structural integrity. In addition, the rubber composition allows the amount of a reinforcing material such as carbon black to be reduced.

The invention discloses a corrosion-resistant anti-cracking cable sheath material and a preparation method thereof, and belongs to the technical field of cable materials. The sheath material is prepared by adopting ethylene-vinyl acetate rubber and ethylene-propylene-diene monomer rubber as matrixes, adding graphene modified conductive carbon black and self-repairing microcapsules in a specific proportion, and carrying out banburying premixing, open milling feeding, dynamic vulcanization and other multi-step processes. Graphene and carbon black form a stable conductive network according to a specific ratio under the action of a silane coupling agent, urea resin is taken as a wall material of the self-repairing microcapsule, epoxy resin and a curing agent in a core material are in a specific ratio, and the repairing efficiency is ensured. The tensile strength retention rate of the material is greater than or equal to 92% and the elongation at break retention rate is greater than or equal to 88% after the material is aged for 1500 hours in a salt mist environment, the strength recovery rate of microcracks reaches 85% or above after the microcracks are subjected to heat treatment at 70 DEG C for 2 hours, and the material has excellent corrosion resistance, cracking resistance, self-repairing function and static dissipation capacity and is particularly suitable for cable protection in severe environments such as marine transportation and chemical engineering.

The invention relates to the technical field of cables, in particular to a high-flexibility ethylene-propylene insulating rubber material for a charging pile cable and a preparation process. The composite material comprises an ethylene propylene diene monomer, a thermoplastic polyolefin elastomer, an ethylene-butylene copolymer, nanoscale magnesium hydroxide, a silane coupling agent, dicumyl peroxide, a hindered phenol antioxidant and a phosphite antioxidant. The ethylene propylene diene monomer and the ethylene-butylene copolymer form a flexible network skeleton, and the ethylene-butylene copolymer and the thermoplastic polyolefin elastomer are subjected to molecular-level blending, so that the elongation at break and the bending fatigue resistance are improved; silane coupling agent modified nano magnesium hydroxide is chemically bonded with a rubber matrix, so that the flame retardance and thermal aging resistance are enhanced, and the negative influence of filler agglomeration on flexibility is reduced; the compound antioxidant system effectively inhibits thermal oxidation degradation at high temperature, avoids insulation failure, realizes collaborative optimization of high flexibility and high heat resistance, and improves the reliability and applicability of the charging pile cable.

The invention discloses a super wear-resistant rubber compound and a preparation method thereof, and belongs to the field of rubber compounds. The rubber compound comprises the following raw materials in parts by mass: 100 parts of a rubber phase, 10-20 parts of white carbon black, 10-15 parts of modified silicon dioxide aerogel, 3-8 parts of a coupling agent, 1.5-3 parts of an anti-aging agent, 1-5 parts of sulfur, 1-3 parts of an active agent, 4-6 parts of an accelerant and 1-3 parts of a cross-linking agent, the rubber phase comprises ethylene propylene diene monomer and butadiene styrene rubber in a mass ratio of (30-40): (60-70); styrene butadiene rubber chain segments are grafted on the surface of the modified silicon dioxide aerogel. The silicon dioxide aerogel can improve the mechanical property of the rubber compound, absorb external stress through micro-deformation and reduce the wear rate of the rubber compound, and after modification treatment, not only can the dispersity and compatibility of the silicon dioxide aerogel be improved, but also the interfacial compatibility between rubber phases can be improved, a physical entanglement network is formed, and the wear resistance of the rubber compound is improved. And integration of filler dispersion and rubber compatibilization is realized.

The invention discloses a magnetic rubber composition, a preparation method thereof and a sealing strip, and belongs to the field of rubber materials. The composition takes ethylene propylene diene monomer as a matrix, and comprises 100-600 parts of modified samarium iron nitrogen, 15 parts of a silane coupling agent Si69, 0.7-1 part of a vulcanizing agent and 5-15 parts of a foaming agent, and 1-10 parts of epoxy grafted modified beta-CD can also be added. The modified samarium-iron-nitrogen is loaded and grafted, and then the sealing strip is prepared through the working procedures of mixing, vulcanizing, magnetizing and the like. According to the sealing strip, carbon black is replaced with the magnetic powder, the VOC release amount and the odor level are reduced, the mechanical property is improved, magnetic attraction force is given, and the problem of rebound deterioration of a traditional sealing strip is solved through surface modification of the magnetic powder.

The invention belongs to the technical field of rubber sealing rings, and particularly discloses a wading rubber sealing ring and a preparation method thereof, the wading rubber sealing ring comprises the following components by weight: 60-70 parts of modified ethylene propylene diene monomer, 35-50 parts of modified white carbon black, 20-30 parts of hydrogenated nitrile rubber, 0-10 parts of fluororubber, 2-5 parts of polyester fiber, 0.5-3 parts of an anti-hydrolysis agent, and 1-3 parts of a hydrophobic agent. 2-4 parts of an antimicrobial agent, 3-5 parts of an anti-aging agent and 1-7 parts of sulfur; the anti-hydrolysis agent is a mixture of tetrakis [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and a carbodiimide anti-hydrolysis agent; the hydrophobic agent is a mixture of polydimethylsiloxane and perfluorooctyltriethoxysilane, and the hydrophobic agent is a mixture of polydimethylsiloxane and perfluorooctyltriethoxysilane. The wading rubber sealing rubber ring and the preparation method thereof are suitable for fresh water and warm water scenes, and have wide application prospects in ship sealing and sewage treatment equipment in seawater and industrial wastewater scenes.

The invention discloses a preparation method of a flame-retardant rubber material for vehicles, and belongs to the technical field of flame-retardant rubber. Comprising the following raw materials in parts by weight: 60-70 parts of nitrile rubber, 22-30 parts of ethylene propylene diene monomer, 5-15 parts of a modifier, 3-5 parts of zinc oxide, 0.1-0.3 part of an initiator, 2-4 parts of a lubricant, 4-6 parts of sulfur and 0.5-1.5 parts of a vulcanization accelerator. Nitrile rubber is used as a matrix, so that the material is endowed with excellent oil resistance and good mechanical property; the oxidation resistance of the material can be enhanced by introducing the ethylene propylene diene monomer; wherein the modifier enhances the flame retardance, heat resistance, oxidation resistance and a certain degree of mechanical properties of the material, and the properties are long-lasting and stable; therefore, the prepared rubber material is high in oil resistance and good in mechanical property, has stable and efficient flame retardance, heat resistance and oxidation resistance, and has important application value in the technical field of flame-retardant rubber.

The invention provides an EPDM (Ethylene-Propylene-Diene Monomer) rubber material and a preparation method and application thereof, and relates to the technical field of rubber materials. The EPDM rubber material is prepared from the following raw materials in parts by mass: 100 to 200 parts of raw EPDM rubber, 50 to 80 parts of composite modified white carbon black, 8 to 15 parts of a plasticizer, 0.5 to 2.0 parts of an anti-aging agent, 1.0 to 3.0 parts of a dispersing agent, 3.0 to 7.0 parts of a vulcanizing agent and 0.5 to 3.0 parts of an assistant cross-linking agent. The EPDM rubber material provided by the invention has good compatibility in a mixed solution of a refrigerant and refrigerating machine oil, has excellent mechanical properties, and can be applied to EPDM rubber products of an automobile air conditioning refrigeration system.

The invention relates to a high-adhesiveness composite material for a rubber dam and a preparation method of the high-adhesiveness composite material, and relates to the technical field of rubber dams, the high-adhesiveness composite material for the rubber dam comprises an outer weather-proof protective layer, a middle reinforcing layer and an inner self-repairing layer, the weather-resistant protective layer is prepared from 90 to 110 parts of highly saturated nitrile rubber, 23 to 28 parts of carbon black N550, 3 to 8 parts of nano TiO2, 1 to 3 parts of antioxidant 1010 and 2 to 3 parts of dicumyl peroxide, and the reinforcing layer is prepared from 60 to 80 parts of ethylene propylene diene monomer, 25 to 35 parts of styrene butadiene rubber, 13 to 15 parts of nylon fiber, 10 to 12 parts of aramid fiber, 12 to 15 parts of carbon black, 0.5 to 1.5 parts of graphene, 1 to 2 parts of sulfur and 0.5 to 1.5 parts of accelerant CZ. The self-repairing layer comprises 90 to 100 parts of silicone rubber, 5 to 10 parts of nano SiO2, 5 to 8 parts of a self-repairing agent and 0.1 to 0.3 part of a dispersing agent. The high-adhesiveness composite material for the rubber dam disclosed by the invention has relatively good adhesiveness, and can timely and automatically repair micro cracks and prevent further expansion of the cracks.

The invention relates to the technical field of rubber foaming materials, and discloses a preparation method and application of a microporous EPDM rubber foaming material. The anti-aging co-crosslinking agent structure contains a multi-maleimide group, which can generate chemical crosslinking with the EPDM rubber, and the crosslinking activity of the molecular chain is enhanced, so that the carbon dioxide dissolved in the matrix is ​​not easy to diffuse out of the matrix, and the nucleation sites are gradually increased, which can support the formation of the pore structure and maintain the integrity of the pore structure, so as to form a dense microporous structure; the imide heterocycle, triazine ring and benzene ring in the anti-aging co-crosslinking agent have strong high temperature resistance. In the rubber vulcanization process, the double bonds are opened to participate in the crosslinking reaction, and free radical active species are formed, which undergo a co-crosslinking reaction with the EPDM rubber, improve the crosslinking network structure, improve the heat air aging resistance and salt spray aging resistance of the EPDM rubber, and enhance the elastic recovery ability of the rubber.

The invention discloses a production method of a vehicle gauge grade MLCC release base film. The base film comprises an outer layer, a middle layer and an inner layer. The outer layer is prepared from PET, silane coupling agent modified nano zinc oxide, organic silicon modified acrylate and an antioxidant; the middle layer is prepared from PET (Polyethylene Terephthalate), ethylene propylene diene monomer, nano silicon dioxide, organic montmorillonite and PP-g-MAH (Maleic Anhydride); the inner layer is composed of PET, a high-density polyethylene / butadiene styrene rubber composite modifier, graphene oxide and multi-walled carbon nanotubes. The prepared vehicle gauge grade MLCC release base film has excellent mechanical properties and thermal stability.

The invention discloses an expandable rubber cable pipe plugging device and a preparation method thereof.The expandable rubber cable pipe plugging device is prepared from, by weight, 100 parts of EPDM rubber, 0.5-1.0 part of graphene, 0.2 part of silane coupling agent KH550, 10 parts of sodium carboxymethyl cellulose, 15 parts of sodium acrylate-acrylamide copolymer, 5 parts of polyvinyl alcohol, 8 parts of bentonite, 5 parts of expandable graphite and 3 parts of 4, 4 '-oxybisbenzenesulfonyl hydrazide foaming agent. The anti-aging coating is prepared from the following components in parts by weight: 1 part of zinc stearate, 2.5 parts of peroxide DCP, 2 parts of assistant crosslinker TAIC, 5 parts of zinc oxide, 1 part of stearic acid, 30 parts of fumed silica, 5 parts of modified nano montmorillonite, 20 parts of light calcium carbonate, 1.5 parts of anti-aging agent TMQ, 1 part of anti-aging agent 6PPD, 0.5 part of hindered phenol antioxidant 1076, 2 parts of UV absorbent UV-3292, 8 parts of naphthenic oil, 10 parts of microcapsules and 0.5 part of boron trifluoride diethyl etherate complex catalyst.

The invention relates to the technical field of hydraulic engineering materials, and particularly discloses a corrosion-resistant rubber dam and a preparation method thereof. The rubber dam is prepared by the following steps: forming a composite matrix (in a mass ratio of 60: 25: 15) by using ethylene propylene diene monomer (EPDM), brominated butyl rubber (BIIR) and hydrogenated butadiene-acrylonitrile rubber (HNBR), adding silane coupling agent modified nano zirconium oxide-aluminum oxide composite powder (ZrO2-Al2O3 with the particle size of 30-80nm) as a corrosion-resistant filler, and carrying out two-stage mixing and gradient vulcanization processes. The tensile strength retention rate of the obtained product in a corrosive environment with the pH value of 1-14 is larger than or equal to 92%, the ultraviolet aging resistance life reaches 30 years, the air tightness is improved by 5 times (the leakage rate is smaller than or equal to 2% / month) compared with a traditional EPDM dam, and the dam is suitable for high-corrosive water areas such as seawater backflow and acid rain.

The invention discloses a self-cleaning rubber connecting pipe for a drainage system, and belongs to the technical field of drainage pipes, the rubber connecting pipe comprises the following raw materials: 30-35 parts of ethylene propylene diene monomer, 2.5-2.8 parts of carbon black, 1-1.2 parts of an accelerant, 15-20 parts of calcium carbonate, 3.0 parts of paraffin oil, 2.0-2.5 parts of polytetrafluoroethylene, 1.5 parts of zinc oxide and 1.2-2.2 parts of copper-mercaptobenzimidazole / boron nitride, through a hydrothermal synthesis method, boron nitride with a two-dimensional layered structure is taken as a carrier, copper-mercapto benzimidazole is loaded on the carrier to form a copper-mercapto benzimidazole / boron nitride material, the copper-mercapto benzimidazole / boron nitride material is added into a rubber connecting raw material, the adding amount is controlled, and the lubricating property and the antibacterial property of the rubber connecting pipe are improved through the synergistic effect of the three components, so that the surface of the rubber connecting pipe is kept clean.

The invention discloses an antibacterial TPV material for an automobile and a preparation method of the antibacterial TPV material. The antibacterial TPV material is prepared from the following raw materials: 100 parts of ethylene propylene diene monomer; 50 to 70 parts of polypropylene; 40 to 60 parts of filler; 60 to 80 parts of filling oil; 1-3 parts of an antibacterial agent; 2-4 parts of a vulcanizing agent; 1-2 parts of an assistant vulcanizing agent; 0.5 to 1 part of an antioxidant; and 0.5 to 1 part of an anti-ultraviolet agent. A chitosan / nano-zinc oxide / porous silicon oxide composite material is prepared as an antibacterial agent, ZnO is uniformly loaded on a porous SiO2 skeleton, agglomeration among nano-ZnO particles is effectively avoided, the dispersity of the nano-ZnO particles in the material is improved, CS / ZnO / SiO2 is used as the antibacterial agent, and the automobile TPV material with good antibacterial performance is prepared. The material has good mechanical property and antibacterial property.

The invention relates to the technical field of ethylene propylene diene monomer rubber, in particular to a white food-grade ethylene propylene diene monomer rubber tube and a preparation method thereof. The ethylene propylene diene monomer is prepared from the following raw materials: EPDM rubber, white carbon black, kaolin, paraffin oil, zinc oxide powder, calcium oxide powder, 1-2 parts of stearin, a silane coupling agent, titanium dioxide, sulfur and a comprehensive accelerant. The preparation method comprises the following steps: mixing the EDPM rubber, the zinc oxide and the stearic acid, heating and mixing, adding the white carbon black, the kaolin and the like, continuously mixing, standing, adding the sulfur and the like, and mixing to obtain a pre-mixed rubber material; carrying out open milling on the pre-mixed rubber material, turning over the rubber, and discharging sheets; cutting into strips, hanging on rods, and cooling at room temperature for later use; and extruding and molding the normal-temperature adhesive tape to obtain the product. The kaolin is additionally introduced into the raw materials, water absorption can be reduced, and the comprehensive accelerant formed by compounding the Altermix BGL-70, the HANSUN EG6M-80GE and the 5-hydroxy-1, 4-naphthoquinone is adopted, so that the vulcanization efficiency can be greatly improved, the time is shortened, the vulcanization temperature range is widened, and the process is more stable and controllable.

The invention relates to the technical field of foaming materials, in particular to a high-damping EVA / EPDM composite foaming material and a preparation method thereof. The high-damping EVA / EPDM composite foam material is prepared from the following raw materials in parts by weight: 150 to 80 parts of ethylene-vinyl acetate copolymer, 20 to 50 parts of ethylene propylene diene monomer, 3 to 5 parts of azodicarbonamide, 1 to 3 parts of dicumyl peroxide, 10 to 12 parts of compound filler, 6 to 10 parts of maleic anhydride grafted ethylene-octylene copolymer, 2 to 4 parts of hydroxyl-terminated polybutadiene and 1 to 4 parts of triallyl isocyanurate, the compound filler is formed by compounding silicon dioxide microspheres, graphene aerogel microspheres and modified barium titanate nanoparticles according to the mass ratio of 1: (1.5-1.7): (1.5-1.8); the high-damping EVA / EPDM composite foam material prepared by the invention not only has better high-damping and low-resilience properties, but also has excellent tensile strength, and the quality of the high-damping EVA / EPDM composite foam material is effectively ensured.

The invention discloses an integrated unit type elastic aluminum plate waterproof structure used for a deformation joint and integrated with a curtain wall, and belongs to the technical field of building construction. The aluminum alloy curtain wall comprises rock wool filled in a deformation joint, the deformation joint is covered with a V-shaped stainless steel plate, an EPDM rubber plate, a fold line type aluminum plate and a U-shaped aluminum plate are mounted between aluminum alloy curtain wall keels, and a rubber plug is arranged between overlapped sections of the fold line type aluminum plate and the U-shaped aluminum plate. The structure is scientific in structural design, ingenious in structure, easy to construct and good in protection and deformation resistance, the deformation joint water stop component and the deformation joint outer curtain wall decoration structure are designed in an integrated unit mode and integrally installed with the curtain wall, the structure is simple, erecting is convenient, and the construction cost is low. The problems of exterior cracking and damage of deformation joints caused by thermal expansion and cold contraction, differential settlement, earthquakes and the like are solved, the functions of water resistance, heat preservation, fire prevention, lightning protection and the like are ensured, the service life is prolonged, and meanwhile the overall decoration effect of the outer vertical face is improved.

The invention provides an EPDM (Ethylene-Propylene-Diene Monomer) rubber sealing strip double-machine-head intelligent regulation and control parallel extrusion method, which relates to the technical field of rubber sealing, and comprises the following steps: obtaining an EPDM rubber extrusion task; sealing strip production requirements are obtained, and a double-machine-head parallel extrusion decision is made for the first machine head extrusion assembly and the second machine head extrusion assembly; activating an extrusion loss prediction evaluation module; carrying out loss prediction evaluation on the first parallel extrusion scheme; judging whether the first parallel extrusion loss coefficient is greater than or equal to a preset extrusion loss threshold value; and if yes, optimizing and adjusting the first parallel extrusion scheme. The technical problem that in the prior art, due to the fact that single-machine-head extrusion or multi-machine-head independent control extrusion is usually used in the production process, the large-batch production efficiency of the EPDM rubber sealing strips is not high can be solved, double-machine-head parallel extrusion is carried out, adjustment and optimization are carried out according to loss prediction, and the production efficiency of the EPDM rubber sealing strips is improved.

The invention relates to the field of sheath materials, and discloses an anti-aging sheath material for an electronic wire and a preparation method thereof, the sheath material comprises low density polyethylene, an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, ethylene propylene diene monomer, a triazine ring derivative, ammonium polyphosphate, modified nano silicon dioxide and an auxiliary agent; according to the triazine ring derivative, N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine reacts with cyanuric chloride to prepare a triazine ring monosubstituent, hydrazine hydrochloride is used as a bridging agent to react with the triazine ring monosubstituent, and the triazine ring derivative and piperazine are polymerized to prepare the triazine ring derivative. The modified nano silicon dioxide is prepared by enabling 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 4-propenyloxy-2-hydroxybenzophenone to react, and carrying out free radical polymerization on the reaction product on the surface of the nano silicon dioxide. The synergistic effect of mechanical property, thermo-oxidative aging resistance, ultraviolet aging resistance and flame retardant property is realized.