1175 results about "Ethylene propylene rubber" patented technology

The invention discloses a high-strength corrosion-resistant aramid composite material and a preparation process thereof, and relates to the technical field of aramid composite materials, the high-strength corrosion-resistant aramid composite material comprises the following components by mass: 60-80 parts of ethylene propylene diene monomer, 20-40 parts of hydrogenated nitrile rubber, 10-15 parts of polytetrafluoroethylene, 18-30 parts of a filler, 10-15 parts of aramid fiber, 5-8 parts of a plasticizer, and 3-6 parts of a vulcanizing agent. The EPDM rubber, the hydrogenated nitrile rubber and the polytetrafluoroethylene are compounded, and the aramid fibers and the filler are added, so that the composite material with good mechanical property and corrosion resistance is obtained; by modifying the ethylene propylene diene monomer and the aramid fiber, the compatibility among the materials is improved, and the comprehensive performance of the composite material is further improved.

The invention relates to the technical field of cables, and provides a high-temperature-resistant flame-retardant power cable and a preparation method thereof. A high-temperature-resistant flame-retardant power cable comprises a conductor and a high-temperature-resistant flame-retardant outer layer wrapping the conductor. The high-temperature-resistant flame-retardant outer layer is prepared from the following raw materials in parts by weight: linear low-density polyethylene, an ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, chopped polyimide fibers, nano-coated magnesium hydroxide, zinc borate, zinc stannate, polyethylene grafted maleic anhydride, an anti-aging agent, dicumyl peroxide, an antioxidant, polyethylene wax, calcium stearate and cerium dioxide. According to the cable prepared in the invention, the reliability of an existing high-temperature-resistant flame-retardant power cable under thermal cycle is improved, and the problem of local temperature resistance difference caused by agglomeration and high-temperature migration of nanoparticles in a polymer matrix is improved.

The invention relates to the technical field of cables, and provides an anti-aging insulated power cable. A conductor layer and an anti-aging outer sheath layer are sequentially arranged from inside to outside. The anti-aging outer sheath layer is prepared from the following raw materials in parts by weight: 55 to 65 parts of PVC (Polyvinyl Chloride) resin, 20 to 30 parts of ethylene propylene diene monomer, 10 to 15 parts of ethylene-vinyl acetate copolymer, 10 to 12 parts of modified kaolin, 18 to 20 parts of diisononyl phthalate, 4 to 5 parts of calcium-zinc composite stabilizer, 1.5 to 2 parts of antioxidant, 0.5 to 1 part of polyethylene wax and 0.5 to 0.7 part of calcium stearate; the modified kaolin is obtained by coating the surface of kaolin with nano silicon dioxide to obtain SiO2-coated kaolin and grafting the SiO2-coated kaolin with an ultraviolet absorbent. According to the anti-aging insulated power cable prepared in the invention, the problem that the ultraviolet absorbent may be decomposed, volatilized or migrated to fail in long-term use is solved, and the anti-aging stability of the insulating material in long-term operation is improved.

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 environment-friendly cable ethylene-propylene insulation material comprises the following raw materials: ethylene propylene diene monomer, an elastomer, a reinforcing agent, a flame retardant, a vulcanizing activator, a filler, a plasticizer, an anti-aging agent, a vulcanizing agent and a silane coupling agent. 50-70 parts by mass of ethylene propylene diene monomer rubber; the elastomer is a POE (polyolefin elastomer) of 30-50 parts; the flame retardant is prepared from 30 to 50 parts of nano magnesium hydroxide, 5 to 10 parts of microencapsulated red phosphorus and 3 to 5 parts of zinc borate; and the plasticizer is paraffin oil. According to the ethylene-propylene insulating material, a halogen-free flame-retardant system is combined with an interface modification technology, so that the defects of poor mechanical property and high material toxicity of a traditional material are overcome. The oxygen index is greater than or equal to 38%, the tensile strength is greater than or equal to 10Mpa, and the material is suitable for high-risk mine environments.

The invention relates to the technical field of overhead conductors, and provides a corrosion-resistant overhead insulated conductor and a preparation method thereof. The corrosion-resistant overhead insulated wire sequentially comprises a conductor, an insulating layer and a sheath layer from inside to outside, and raw materials of the sheath layer comprise nitrile rubber, ethylene propylene diene monomer, a compatilizer, an activating agent, an anti-aging agent, filler, a softening agent, a plasticizer, a vulcanizing agent, an accelerant and a reinforcing agent; the preparation method of the reinforcing agent comprises the following steps: A1, cleaning aramid pulp, adding the aramid pulp into a calcium chloride solution, stirring, cleaning and drying to obtain pretreated aramid pulp; a2, mixing the pretreated aramid pulp and phenolic resin to obtain the reinforcing agent. According to the technical scheme, the problem of poor tensile strength of the sheath layer of the corrosion-resistant overhead insulated wire in the prior art is solved.

The present application relates to the technical field of colored tire rubber, and specifically discloses an anti-discoloration rubber composition for colored tires and its preparation method. An anti-discoloration rubber composition for colored tires is prepared by first preparing modified colored silica, then using solution-polymerized styrene-butadiene rubber, natural rubber, and EPDM as the rubber matrix, adding modified colored silica for coloring and reinforcement, and then adding polydicyclopentadiene resin, titanium dioxide, YDH-151 silane coupling agent, zinc oxide, stearic acid, sulfur and TBBS accelerator, protective wax, AFS / LG antioxidant, antistatic agent and other auxiliary agents to prepare the anti-discoloration rubber composition for colored tires. The anti-discoloration rubber composition for colored tires prepared in this application has the advantages of stable color, aging resistance, good tensile strength, strong wear resistance, and strong weather resistance.

The invention relates to the technical field of cables, and provides a high-temperature-resistant flame-retardant cable and a preparation method thereof. The high-temperature-resistant flame-retardant cable comprises a conductor and a flame-retardant outer sheath, the flame-retardant outer sheath is prepared from the following raw materials in parts by weight: 40 to 50 parts of linear low-density polyethylene, 35 to 45 parts of ethylene-vinyl acetate copolymer, 10 to 15 parts of ethylene propylene diene monomer, 15 to 18 parts of modified aluminum hydroxide, 10 to 14 parts of modified magnesium hydroxide, 5 to 8 parts of polyethylene grafted maleic anhydride, 5 to 8 parts of microencapsulated red phosphorus, 2 to 3 parts of silane coupling agent and 0.8 to 1 part of antioxidant. The composite material is prepared from the following components in parts by weight: 0.5-1 part of a light stabilizer, 0.5-1 part of calcium stearate, 0.8-1 part of polyethylene wax and 0.5-0.9 part of carbon nanotubes. According to the cable prepared in the invention, the performance stability of an existing high-temperature-resistant material in a high-temperature environment is improved, and the problems of softening, melting and the like of the cable are avoided.

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 radiation-resistant protective cable for a nuclear power station and a preparation method thereof, and belongs to the technical field of cables, the radiation-resistant protective cable for the nuclear power station comprises a cable body and a sheath layer, and the sheath layer comprises the following components in parts by mass: 100 parts of polypropylene resin, 20-40 parts of ethylene propylene diene monomer and 5-12 parts of modified multi-walled carbon nanotubes. 8-15 parts of a heat conduction enhancer, 2-6 parts of an antioxidant, 1-3 parts of a heat stabilizer and 4-8 parts of a plasticizer; the heat conduction reinforcing agent is prepared by carrying out surface modification on composite powder of aluminum nitride and boron nitride through a silane coupling agent. Through the synergistic effect of the modified multi-walled carbon nanotubes and the surface modified heat-conducting enhancer, the heat-conducting property, radiation resistance and heat stability of the cable are remarkably improved on the premise of keeping excellent electrical insulation property.

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 relates to the technical field of insulators, in particular to a composite insulator and a preparation method thereof. The composite insulator comprises an insulator main body and vulcanized silicone rubber coating the insulator main body, the vulcanized silicone rubber is prepared from the following components in parts by weight: 60 to 70 parts of methyl vinyl silicone rubber, 10 to 20 parts of ethylene propylene diene monomer, 5 to 10 parts of modified glass fiber, 20 to 30 parts of filler, 0.3 to 0.5 part of simethicone, 1 to 5 parts of compatilizer, 3 to 5 parts of stearic acid and 1 to 3 parts of vulcanizing agent, a preparation process of the modified glass fiber comprises the following steps: adding polyimide, a silane coupling agent and humic acid into absolute ethyl alcohol, uniformly mixing, adding glass fiber, heating for reaction, and calcining to obtain the modified glass fiber. The composite insulator has good mechanical performance, corona resistance and anti-pollution flashover performance.

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 materials for anti-nuclear radiation clothes, in particular to ethylene propylene rubber for anti-nuclear radiation clothes and a preparation method of the ethylene propylene rubber. A composite multi-walled carbon nanotube subjected to pretreatment; an accelerant; a fiber; a plasticizer; an anti-aging agent; stearic acid; through an innovative raw material formula and a corresponding preparation process, the novel ethylene propylene rubber material for the nuclear radiation prevention clothing is mainly researched and developed. In the aspect of raw materials, the radiation shielding performance of the ethylene propylene rubber is remarkably improved by introducing the specially pretreated composite multi-walled carbon nanotubes and reasonably matching the nano zinc oxide. Meanwhile, the specific dosage ratio of the ethylene propylene rubber, the accelerant, the fiber, the plasticizer and other raw materials ensures that the product has excellent shielding performance and also has good weather resistance, flexibility and comfort.

An ethylene propylene diene monomer rubber sealing ring material for a liquid cooling system and a preparation method therefor. The material comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer rubber, 70-90 parts of carbon black, 0.5-1.5 parts of an internal release agent, and 7-9 parts of a peroxide cross-linking agent, wherein the carbon black is made up of 40-50 parts of furnace carbon black and 30-40 parts of thermal cracking carbon black in combination. The preparation method comprises: 1. weighing the ethylene propylene diene monomer, the furnace carbon black, the thermal cracking carbon black, and the internal release agent on the basis of the above parts by weight, sequentially carrying out first mixing and first tight milling, and upon completion of the first tight milling, sheeting out the mixed material and then cooling the resulting material to room temperature to obtain a masterbatch; 2. weighing the peroxide cross-linking agent and the masterbatch, sequentially carrying out second mixing and second tight milling, and upon completion of the second tight milling, sheeting out the mixed material to obtain blanks; and 3. sequentially vulcanizing the blanks, and then cooling to obtain an ethylene propylene diene monomer rubber sealing material for a liquid cooling system. The material has excellent processability and liquid-cooling medium resistance; and the preparation method is simple and convenient to operate and beneficial to industrial production.

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 relates to a process for realizing uniform foaming of an elastic rotating body through temperature gradient control, in particular to an elastic rotating body foaming forming process which comprises the following steps: S1, raw material pretreatment and internal mixing: adopting a blend of POE (Polyolefin Elastomer) and EPDM (Ethylene-Propylene-Diene Monomer) as a main body material, mixing POE and EPDM according to a mass ratio of 6: 4-8: 2, and carrying out extrusion molding; adding 3%-15% of an anti-shrinking agent, 8%-20% of talcum powder and 5%-12% of calcium carbonate as fillers, and mixing and plasticizing for 8-12 minutes through an internal mixer at the temperature of 80-100 DEG C and the rotor rotating speed of 30-50 rpm. According to the foaming forming process of the elastic rotating body, the shaping pipe and the built-in heating pipe are arranged in the middle of the mold cavity, so that the temperature of the middle of the mold cavity is 1-3 DEG C higher than that of the upper and lower areas, and therefore, an accurate axial temperature gradient is formed, the decomposition rate of a foaming agent and the material curing process are effectively balanced, and shrinkage deformation caused by uneven temperature is inhibited.

The invention relates to the technical field of rubber gloves, and discloses an ethylene propylene diene monomer glove and a manufacturing method thereof.The ethylene propylene diene monomer is selected as a glove body material, and a softening agent, a reinforcing agent, a vulcanizing agent, an auxiliary vulcanizing agent and an anti-aging agent are added in a matched mode according to the proper proportion; the glove has excellent elasticity and has excellent tolerance and aging resistance to various strong acids, strong alkalis, organic solvents and the like, internal and external dual treatment is adopted, the inner surface of the glove is treated through a silica gel lubricant, the inner surface of the glove is smoother, more comfortable and more suitable for wearing, and the inner surface and the outer surface of the glove are treated through an anti-slip agent, so that the wear resistance of the glove is improved. A layer of uniform anti-slip film is formed on the inner and outer surfaces of the glove through drying and curing, the friction force of the surface of the glove is increased, the glove is prevented from slipping off when an object is grabbed, the use safety is improved, the characteristics of the ethylene propylene diene monomer are fully played by controlling the raw material ratio, the mixing temperature and time, the vulcanization condition and the like, and the glove can meet the requirements of various use scenes.

The invention relates to the technical field of cables, and provides a corrosion-resistant control cable and a preparation method thereof. The corrosion-resistant control cable sequentially comprises a conductor, an insulating layer, a shielding layer and a sheath layer from inside to outside, wherein the sheath layer comprises the following components in parts by weight: 50-70 parts of polyvinyl chloride, 15-25 parts of ethylene propylene diene monomer, 10-20 parts of modified graphene oxide, 0.5-1.5 parts of an antioxidant, 3-5 parts of a plasticizer, 15-20 parts of a flame retardant, 2-4 parts of a compatilizer, 4-5 parts of an active agent, 1-3 parts of an assistant crosslinking agent and 1-3 parts of a crosslinking agent; wherein the modified graphene oxide is obtained by modifying graphene oxide with dimethyl 5-hydroxyisophthalate and N-hydroxymethyl acrylamide. According to the technical scheme, the problem of insufficient corrosion resistance of the control cable in the prior art is solved.

The invention relates to the technical field of cables, and provides a high-weather-resistance power cable. The high-weather-resistant power cable comprises a cable core and an outer sheath, the outer sheath is prepared from the following raw materials in parts by weight: 40 to 50 parts of low-density polyethylene, 25 to 35 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of ethylene propylene diene monomer, 10 to 12 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, 16 to 20 parts of ZrO2 coated modified hydrotalcite, 15 to 20 parts of magnesium hydroxide, 4 to 6 parts of silane coupling agent, 2 to 3 parts of dicumyl peroxide and 3 to 5 parts of zinc oxide; 6 to 10 parts of conductive carbon black, 0.8 to 1 part of antioxidant and 1 to 1.5 parts of zinc stearate. According to the cable prepared in the invention, the protection performance, the service life and the safety of an existing high-weather-resistance power cable under extreme weather conditions are improved, and the mechanical property of the cable is also improved.

The invention discloses a foaming sealing strip material and a preparation method thereof, and relates to the technical field of high-molecular compound compositions. The foaming sealing strip material is prepared from the following components in parts by mass: 80-110 parts of ethylene propylene diene monomer, 5-15 parts of a foaming agent, 3-8 parts of an activating agent, 2-6 parts of a cross-linking agent, 30-60 parts of a filling agent, 20-40 parts of a softening agent, 1-3 parts of a foaming aid and 1-4 parts of an anti-aging agent. The anti-aging agent adopted by the invention can effectively capture free radicals generated in a rubber oxidation process, terminate a chain reaction and prevent a rubber main chain from being broken; ultraviolet light energy can be absorbed and converted into heat energy, and light degradation of a rubber molecular chain is reduced, so that the aging resistance of the sealing strip is remarkably enhanced.

The invention discloses an anti-impact acrylic plate and a preparation method thereof, and belongs to the technical field of acrylic plates. The preparation method comprises the following steps: adding 80-100 parts of methyl methacrylate, 10-15 parts of a flame retardant, 5-15 parts of ethylene propylene diene monomer and 2-8 parts of polypropylene wax into a stirring device, uniformly stirring, adding 15-30 parts of an impact-resistant filler, 3-9 parts of a lubricant and 0.2-2 parts of an initiator, uniformly mixing, extruding into a mold through a screw extruder, curing at 60-80 DEG C for 2-3 hours, curing at 10-35 DEG C for 6-7 hours, and demolding to obtain the impact-resistant acrylic plate. The impact-resistant filler containing nano silicon dioxide and glass fiber and the flame retardant containing halogen-free flame-retardant elements of nitrogen, phosphorus and silicon can be highly dispersed and stably exist in the acrylic plate, so that the impact-resistant filler and the flame retardant can play a role to the greatest extent, and the acrylic plate is endowed with excellent and stable impact resistance and efficient and safe flame retardance.

The invention relates to the technical field of automobile sealing strips, and provides an anti-aging rubber sealing strip for an automobile and a preparation method of the anti-aging rubber sealing strip. The anti-aging rubber sealing strip for the automobile comprises the following components in parts by weight: 55-70 parts of ethylene propylene rubber, 30-45 parts of ethylene propylene diene monomer, 4-8 parts of an anti-aging agent, 35-60 parts of a filling agent, 3-7 parts of a softening agent, 8-10 parts of a plasticizer, 1.2-2.5 parts of an accelerant, 4-8 parts of zinc oxide and 1-2 parts of a vulcanizing agent. The anti-aging agent comprises diatomite-loaded tea polyphenol and a diatomite-loaded anti-aging agent. By means of the technical scheme, the problem that in the prior art, an automobile rubber sealing strip is poor in aging resistance is solved.

The invention discloses a high-strength epoxy-based adhesive and a preparation method thereof, and relates to the technical field of epoxy-based adhesives, the high-strength epoxy-based adhesive comprises the following components: 80-120 parts of epoxy resin; 20-40 parts of a curing agent; 10-35 parts of ethylene propylene diene monomer powder; 5 to 20 parts of toughening resin; 30-80 parts of an inorganic filler; 0.5 to 3 parts of a coupling agent; 0.5 to 2 parts of an auxiliary agent; the preparation is performed based on the formula. According to the invention, the ethylene propylene diene monomer powder is introduced into an epoxy resin system and is matched with the toughening resin, the inorganic filler and the coupling agent for collaborative design, so that the impact resistance and deformation adaptability of a cured adhesive layer are remarkably improved while the adhesive keeps relatively high bonding strength and structural stability; the obtained high-strength epoxy-based adhesive has good mechanical properties, construction performance and engineering adaptability, and is suitable for popularization and application under various complex working conditions.

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.