165 results about "Paraffin oils" patented technology

The invention relates to a paraffin type thermostat. The paraffin type thermostat comprises a main valve 1, a cover and seal gasket assembly 2, an upper support 3, a rubber pipe 4, a valve seat 5, a vent hole 6, a lower support 7, paraffin 8, an inductor 9, a bypass valve 10, a central rod 11 and a spring 12. The upper support, the lower support and the valve seat of the thermostat are riveted into a whole. The upper end of the central rod is fixed to the center of the upper support. The lower portion of the central rod is inserted into a central hole of the rubber pipe. The lower end of the central rod is conical. A cavity between the rubber pipe and a shell of the inductor contains the paraffin. The upper portion and the lower portion of the shell of the inductor are provided with the main valve and the bypass valve which are in linkage. The vent hole is formed in the main valve. The paraffin type thermostat is high in heat conductivity and guarantees that an engine cannot be excessively cold.

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 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 a waterproof sealing gasket material for a shield tunnel and a preparation method of the waterproof sealing gasket material. The preparation method comprises the following steps: plastifying raw rubber to obtain plastified raw rubber; the preparation method comprises the following steps: stirring and mixing plasticated raw rubber, carbon black N550, calcium carbonate, paraffin oil, zinc oxide, stearic acid, calcium oxide, an anti-aging agent and an organic magnesium compound, mixing in a mixing mill, and cooling to room temperature to obtain a mixture I; stirring and mixing the mixture I, modified NPE particles and an accelerant, mixing, and cooling to room temperature to obtain a mixture II; uniformly mixing the mixture II and sulfur in a mixing mill, vulcanizing at high temperature, and standing at room temperature for 24 hours to obtain the waterproof sealing gasket material. According to the waterproof sealing gasket material, the modified NPE particles of the core-shell structure are added, the compatibility of a water-swelling material and non-polar rubber is improved, the organic magnesium compound is added as a multifunctional auxiliary agent, the interface bonding, vulcanization network and flame retardant performance are synergistically improved, and the waterproof sealing gasket material has good waterproof performance. The prepared sealing gasket material has excellent mechanical properties, heat aging resistance, compression set resistance and flame retardance.

The invention discloses an energy-absorbing and shock-reducing rubber material for an ocean platform and a preparation method of the energy-absorbing and shock-reducing rubber material. The rubber material is prepared from the following raw material components: a rubber matrix, a reinforcing filler, a vulcanizing aid, a vulcanizing agent, a silane coupling agent, a vulcanizing activator, an anti-aging agent, protective wax, tear-resistant resin and paraffin oil, the preparation method comprises the following steps: plastifying, preparing master batch, preparing final mixed rubber, and vulcanizing and molding. The natural rubber and butadiene styrene rubber blend is used as a matrix, the natural rubber endows the material with high elasticity, and the butadiene styrene rubber is used for improving the aging resistance of the material; the carbon black and the fumed silica are used as reinforcing fillers, and the dispersion state of the fumed silica is optimized through the silane coupling agent, so that the mechanical properties of the energy-absorbing and shock-reducing rubber material are effectively enhanced. The prepared energy-absorbing and shock-reducing rubber material for the ocean platform can effectively overcome the defects of natural rubber in the aspects of aging resistance, seawater corrosion resistance, oil resistance and chemical corrosion resistance, and meanwhile, the excellent high-damping characteristic and fatigue resistance of the natural rubber are reserved.

The invention discloses a method for microfluidic high-throughput screening of AKK bacteria. The method comprises the following steps: 1) preparing a microfluidic chip; 2) collecting fresh excrement of healthy volunteers, diluting, and adding a fluorescence labeled antibody to obtain a dispersion phase; and (3) preparing liquid drops by taking paraffin oil and Span-80 as a mobile phase, enabling the liquid drops to enter a liquid drop culture tank through an S-shaped liquid drop circulation channel, culturing, introducing the mobile phase, introducing the liquid drops in the liquid drop culture tank into a liquid drop collection tank, taking out, detecting a fluorescence signal, culturing the liquid drops with the fluorescence signal on the improved brain heart infusion broth solid culture medium, and obtaining the brain heart infusion broth. Obtaining a to-be-identified strain; 4, the strain to be identified serves as a template, PCR amplification is conducted, sequencing is conducted on an amplification product, BLAST sequence comparison is conducted on a sequencing result on an NCBI website, and the target strain AKK bacterium is screened out. The method has the advantages of being high in throughput, simple in experimental process and high in specificity, and the screening efficiency of the AKK bacterium can be improved.

The invention relates to the technical field of rubber, and provides a high-strength rubber transmission belt as well as a preparation method and application thereof. The high-strength rubber transmission belt is prepared from the following raw materials in parts by weight: 90 to 110 parts of ethylene propylene diene monomer, 6 to 10 parts of aramid fiber, 3 to 9 parts of nylon, 40 to 50 parts of filler, 4 to 6 parts of vulcanizing activator, 5 to 9 parts of paraffin oil, 4 to 7 parts of adhesive, 3 to 4 parts of anti-aging agent, 11 to 15 parts of auxiliary vulcanizing agent, 2 to 4 parts of vulcanizing agent and 0.1 to 0.5 part of scorch retarder. The filler is prepared from the following raw materials in parts by weight: 100 parts of carbon black, 5 to 7 parts of 4-maleimidobenzoic acid and 5 to 7 parts of 2, 2-dimethylolpropionic acid. Through the technical scheme, the problem of insufficient strength of the rubber transmission belt in the related technology is solved.

This invention discloses a thermoplastic elastomer composition, its preparation method, and its applications. The thermoplastic elastomer composition of this invention comprises the following components: PP resin I, SEBS, TPV, glass fiber powder, paraffin oil, antioxidant, and light stabilizer; wherein, the PP resin I conforms to ISO 1133-1-2011 standard, with a melt index of 80–130 g / 10 min at 230°C and 2.16 kg; the SEBS has a weight-average molecular weight of 80,000–160,000; and the TPV comprises PP resin II and EPDM. The thermoplastic elastomer composition of this invention combines PP resin with a specific melt index, SEBS with a specific weight-average molecular weight, and TPV, resulting in a thermoplastic elastomer composition that possesses both high fluidity and low gloss, as well as excellent high-temperature resistance.

The invention relates to the technical field of chemical production cleaning, in particular to an alkyl metal compound inactivation device and an inactivation method thereof.The alkyl metal compound inactivation device comprises an alkyl metal compound storage tank, an inactivation assembly, an air blowing pipeline, a cooling assembly and a paraffin oil-containing container, a top inlet of the inactivation assembly is communicated with a new water pipeline, and a bottom inlet of the inactivation assembly is communicated with a mixed nitrogen pipeline; a water vapor injection pipeline is fixedly communicated between the mixed nitrogen pipeline and a top inlet of the alkyl metal compound storage tank, a bottom inlet of the alkyl metal compound storage tank is fixedly communicated with an air blowing pipeline, and a cooling assembly is arranged on the outer wall of the alkyl metal compound storage tank. By adopting a water filling mode, the production cost is reduced, meanwhile, new water is brought into the alkyl metal compound storage tank in a vaporific form by nitrogen and is in full contact with alkyl metal residues to inactivate the alkyl metal residues, heat release and storage tank pressure in the reaction process are controlled through the cooling assembly, and the risk of overtemperature and overpressure of equipment is prevented.

The application belongs to the technical field of rubber, and particularly relates to an environment-friendly weather-resistant high-wear-resistance handrail belt rubber material and a preparation method thereof. The rubber material comprises, in terms of weight parts, 80-95 parts of styrene-butadiene rubber, 5-20 parts of butadiene rubber, 70-90 parts of carbon black, 6-9 parts of active agent, 3-5 parts of environment-friendly paraffin oil or naphthenic oil, 4-7 parts of anti-aging agent composition, 1-2 parts of accelerator and 1.5-2.5 parts of vulcanizing agent. The anti-aging agent composition is a combined system of p-phenylenediamine anti-aging agent and quinoline anti-aging agent. Through the synergistic effect of the rubber combined system, the gradation optimization of the reinforcing system and the synergistic effect of the anti-aging agent composition, the application simultaneously realizes high wear resistance, excellent weather resistance (ozone and thermal oxygen aging resistance), low-temperature toughness at-45 DEG C and environment-friendly performance of PAHs <= 10 ppm, and the comprehensive performance is significantly better than that of the existing handrail belt material, and the eight-year service life requirement of public places can be met.

The application discloses a kind of high-temperature-resistant long-life cable material for charging pile cable and a preparation method thereof, and relates to the field of cable material.The cable material includes ethylene-propylene rubber, acrylate rubber, a compatibilizer, stearic acid, zinc oxide, paraffin oil, a vulcanizing agent, a vulcanization aid, nano filler supported antioxidant, and reinforcing filler.The application uses acrylate rubber and ethylene-propylene rubber blending to improve material plasticity and temperature resistance grade, and uses nano filler with reinforcing effect to disperse uniformly and stably in rubber matrix and has the characteristics of improving mechanical properties.The antioxidant is loaded on the nano filler to avoid surface migration of the antioxidant at high temperature, which significantly improves the high-temperature resistance and mechanical properties of the cable material, and can meet the challenges of cable material performance caused by the gradual shortening of charging time and the increasing of charging current of charging pile.

The invention belongs to the field of propane dehydrogenation catalysts, and particularly provides a spherical alumina carrier for propane dehydrogenation, a preparation method of the spherical alumina carrier and a catalyst.The preparation method of the spherical alumina carrier for propane dehydrogenation comprises the following steps that 1, pseudo-boehmite sol and polysaccharide are evenly mixed, and a precursor solution is obtained after curing; (2) dropwise adding the precursor solution into an oil ammonia forming column, and gelatinizing and curing to obtain gel balls; the upper layer of the oil ammonia forming column is a paraffin oil layer, and the lower layer is a composite ammonia water solution; the composite ammonia water solution comprises ammonia water, 2-formylphenylboronic acid and zinc nitrate; and 3) washing the obtained gel balls with deionized water and absolute ethyl alcohol, then transferring the gel balls into an aging solution for aging, filtering, washing, drying, and then roasting to obtain the catalyst. The catalyst prepared by the invention has the advantages of high catalytic activity and coking resistance.

The application relates to the technical field of mixing rubber, and particularly discloses an EPDM air conditioner pipe material mixing rubber for new energy vehicles and a preparation method thereof. The mixing rubber disclosed by the application comprises the following components: 75-125 parts of EPDM raw rubber, 100-140 parts of a reinforcing agent, 50-60 parts of paraffin oil, 10-30 parts of modified kaolin, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 0.5-1.5 parts of an antioxidant, 0.2-0.4 parts of sulfur and 5-6 parts of a crosslinking aid; the reinforcing agent is composed of fast-pressing out furnace black N550 and semi-reinforcing furnace black N774; and the modified kaolin is obtained by modifying a mixture of kaolin and sodium lignosulfonate with a titanate coupling agent. Through formula optimization and adjustment, the mixing rubber prepared by the application has improved low-temperature shrinkage performance under the premise of meeting the high-temperature aging resistance requirement, and can meet the high-temperature and low-temperature requirements simultaneously.

The application discloses a preparation method of a liquid crystal polymer diaphragm and the liquid crystal polymer diaphragm. The preparation method comprises the following steps: providing a soluble liquid crystal polymer, dissolving the soluble liquid crystal polymer in a first solvent, stirring and mixing to obtain a first mixed solution. Fillers are added into the first mixed solution, and dispersion treatment and defoaming treatment are performed to obtain a slurry. The fillers comprise at least one of paraffin oil, aluminum triacetylacetone powder, azodicarbonamide, calcium carbonate powder, silica powder, sodium bicarbonate powder and starch powder. A substrate is provided, the slurry is coated on the substrate, and a wet film is formed on the substrate. The wet film is subjected to drying and curing treatment, and the fillers are removed to obtain a first film body with a porous structure. The first film body is peeled off from the substrate to obtain the liquid crystal polymer diaphragm. In the preparation process of the liquid crystal polymer diaphragm, the fillers are added, the fillers are used for occupying positions in the wet film and are removed, the porous structure in the liquid crystal polymer diaphragm is increased, and the porosity is improved.

The invention discloses a rubber-based high-wear-resistance composite groove belt and a preparation method thereof, and relates to the technical field of wear-resistant materials. Modified ethylene propylene diene monomer and modified polytetrafluoroethylene are internally mixed for 3-5 min, and a rubber matrix is obtained; the preparation method comprises the following steps: sequentially adding modified carbon black, white carbon black, modified nano zinc oxide, stearic acid and paraffin oil into a rubber matrix, uniformly mixing, standing for 16-24 hours, adding sulfur, dicumyl peroxide and N-cyclohexyl-2-benzothiazole sulfenamide, uniformly mixing, and carrying out thin passing for 3-5 times to obtain a rubber compound; and carrying out extrusion molding on the rubber compound, vulcanizing, cooling and sizing to obtain the composite groove belt.

The invention discloses a high-resilience and high-wear-resistance hollow self-water-spraying windscreen wiper strip and a preparation method, and belongs to the field of rubber polymer composite material preparation technologies and automobile accessory products. The high-resilience raw rubber is prepared from the following components in parts by mass: 100 parts of high-resilience raw rubber with the rubber content of 35-50%, 110-120 parts of carbon black, 50-55 parts of paraffin oil, 1-3 parts of a dispersing agent, 1-3 parts of stearic acid, 5-8 parts of high-activity zinc oxide, 3-5 parts of an environment-friendly accelerant, 0.3-0.5 part of low sulfur and 1-2 parts of a sulfur carrier as a vulcanizing agent through multiple mixing, hot pressing, vulcanization molding and punching. A water-based coating is arranged on the surface of the windscreen wiper strip, the water-based coating comprises water-based polyester, Teflon, a base material and a curing agent, and the fluorine content of the water-based coating is 10-30%. Compared with the prior art, the produced windscreen wiper strip is high in resilience, deformation resistance and abrasion resistance and high in scraping degree, the surface of the windscreen wiper strip is flexible and fine, the sliding performance is improved, and noise and abnormal sound are eliminated.

The invention discloses a special non-silicon / silicon-containing oil agent for mesophase pitch-based carbon fibers and a preparation method of the special non-silicon / silicon-containing oil agent, and belongs to the technical field of oil agents, the special non-silicon / silicon-containing oil agent comprises the following components by mass: 25.00%-30.00% of non-silicon mineral oil, 3.00%-10.00% of silicon-containing silicon oil, 1.00%-3.00% of a cationic surfactant, 0.50%-1.50% of a nonionic surfactant, 0.10%-0.50% of a dispersant, and the balance of deionized water; the non-silicon mineral oil is liquid paraffin oil, the thermal decomposition residual rate of the liquid paraffin oil at the temperature of 260 DEG C to 270 DEG C is 1.40 percent to 2.00 percent, and the thermal decomposition residual rate of the liquid paraffin oil at the temperature of 510 DEG C to 520 DEG C is 0.83 percent to 1.24 percent. The special non-silicon / silicon-containing oil agent for the mesophase pitch-based carbon fiber can be decomposed and volatilized more thoroughly, so that scorched particles formed by carbonization of residues are greatly reduced, and melting and surface defects of the mesophase pitch-based carbon fiber are effectively avoided.

The invention relates to the technical field of rubber compounds, and particularly discloses a high-tensile-strength EPDM (Ethylene-Propylene-Diene Monomer) elastic cushion rubber compound and a preparation method thereof. The EPDM elastic cushion rubber compound disclosed by the invention specifically comprises the following components: 80-120 parts of raw rubber, 70-100 parts of a reinforcing agent, 20-30 parts of paraffin oil, 4-7 parts of zinc oxide, 1-3 parts of stearic acid, 2-6 parts of an anti-aging agent, 0.5-1 part of sulfur, 1-3 parts of an accelerant and 2-3 parts of caprolactam disulfide. The reinforcing agent is obtained by mixing N550 fast extruding furnace black, N330 high abrasion furnace black and maleic anhydride-acrylate modified lignin; the anti-aging agent is formed by mixing an anti-aging agent RD and an anti-aging agent The accelerant is formed by mixing a thiuram accelerant and a thiazole accelerant. The formula of the raw materials is improved, the prepared rubber compound has excellent tensile strength, and the hot air aging resistance and the fatigue resistance of the rubber compound are excellent.

The present application relates to the field of chip encapsulation, and particularly relates to a chip encapsulation and a preparation of an embedded chip conveying belt, wherein natural rubber and butadiene rubber are put into a torque rheometer, then an activator, a composite wave-transparent agent, modified rice husk and paraffin oil are sequentially added, mixing is carried out, standing is performed, sulfur, a scorch retarder and an accelerator are added, mixing is carried out, a mill is used to press a sheet, cooling is performed, and a chip encapsulation is obtained; lignin and silicon dioxide are extracted and precipitated from the rice husk by using an alkali extraction and an acid co-precipitation method, a nano-sized spherical lignin-silica hybrid material is obtained by self-assembly through intermolecular hydrogen bonds as a pretreated rice husk, the aldehyde group of the pretreated rice husk is modified, and then a phosphorus-amine ionic liquid is grafted; silicon nitride, glass fiber and aramid fiber are compounded as a wave-transparent agent, the wave-transparent agent is epoxidized first, and then the phosphorus-amine ionic liquid is grafted.

A filter oil composition and a method for removing airborne molecular contaminants from air are provided. The composition includes a first portion comprising paraffinic oil by volume of the composition, a second portion comprising polyalphaolefin by volume of the composition, and a third portion comprising red dye by volume of the composition. Applying the filter oil composition to a cotton air filter material causes tackiness throughout the air filter material, thereby enhancing filtration of air passing through the filter. The composition generally is substantially non-reactive, has excellent oxidation stability, possesses good thermal stability, and retains a suitable viscosity at a normal operating temperature of an automobile engine. In an embodiment, the composition comprises 96.74% paraffinic oil by volume, 3.20% polyalphaolefin by volume, and 0.06% red dye by volume. The viscosity of the composition at 100 degrees-C ranges between substantially 7.2 and 7.6 centistokes (cSTs).

The application relates to the technical field of rubber, and discloses a high-strength rubber transmission belt and a preparation method and application thereof. The high-strength rubber transmission belt comprises the following components by weight: 90-110 parts of ethylene-propylene-diene rubber, 6-10 parts of aramid fiber, 3-9 parts of nylon, 40-50 parts of filler, 4-6 parts of vulcanization activator, 5-9 parts of paraffin oil, 4-7 parts of adhesive, 3-4 parts of anti-aging agent, 11-15 parts of vulcanization aid, 2-4 parts of vulcanizing agent and 0.1-0.5 parts of anti-scorching agent. The filler comprises the following components by weight: 100 parts of carbon black, 5-7 parts of 4-maleimide benzoic acid and 5-7 parts of 2,2-dimethylol propionic acid. The technical scheme can solve the problem of insufficient strength of the rubber transmission belt in the related art.

A wax composition contains a primary oil / wax (e.g., 30 to 95 vol %), a natural wax (e.g., 5 to 30 vol %), optionally a solvent (e.g., 0 to 20 vol %), and optionally a fragrance (e.g., (0 to 5 vol %). The wax composition may be suitable for application to sporting equipment, such as hockey stick blades. The composition may include paraffin oil, soy wax, isopropyl alcohol, and pine needle essential oil.

A filter oil composition and a method for removing airborne molecular contaminants from air are provided. The composition includes a first portion comprising paraffinic oil by volume of the composition, a second portion comprising polyalphaolefin by volume of the composition, and a third portion comprising red dye by volume of the composition. Applying the filter oil composition to a cotton air filter material causes tackiness throughout the air filter material, thereby enhancing filtration of air passing through the filter. The composition generally is substantially non-reactive, has excellent oxidation stability, possesses good thermal stability, and retains a suitable viscosity at a normal operating temperature of an automobile engine. In an embodiment, the composition comprises 96.74% paraffinic oil by volume, 3.20% polyalphaolefin by volume, and 0.06% red dye by volume. The viscosity of the composition at 100 degrees-C ranges between substantially 7.2 and 7.6 centistokes (cSTs).

The present invention addresses the problem of providing a hot-melt composition which exhibits excellent workability, which provides a cured product having a low compression set, and which exhibits excellent recoverability and a method which is for producing a hot-melt composition. The present invention relates to a hot-melt composition comprising a thermoplastic elastomer 1 which includes SEEPS having a weight-average molecular weight of not less than 300,000 and a styrene content of not less than 35 mass%, an aliphatic tackifying resin, a paraffin oil, and an antioxidant. The present invention also relates to a method for producing a hot-melt composition wherein: a thermoplastic elastomer 1, an aliphatic tackifying resin, a paraffin oil, and an antioxidant are mixed; and the thermoplastic elastomer 1 has a weight-average molecular weight of not less than 300,000 and a styrene content of 35-45 mass%.

The invention relates to the technical field of attractants and pest control, in particular to a volatile matter luring ball for luring hoverflies, which comprises a PVC (polyvinyl chloride) shell, a non-woven fabric liner and a slow-release attractant, the slow-release attractant is composed of a composite attractant, a paraffin oil solvent and a macroporous resin slow-release part in proportion. The compound attractant is prepared by mixing trans-beta-farnesene, nerolidol, 6-methyl-5-heptene-2-ketone and cis-3-hexene acetate according to a specific volume ratio, and the compound attractant can be used for attractant attractants. The preparation method comprises the following steps: oscillating and mixing the components with a solvent under a low-temperature condition, adsorbing on macroporous resin, and packaging. Through the synergistic effect of the multi-component volatile matters and the multi-stage slow-release structure, the luring ball realizes efficient, specific and lasting behavior luring on hoverflies, effectively prolongs the field lasting period, and improves the stability and practicability of natural enemy insect regulation and control.

The invention discloses an oil-resistant ethylene propylene rubber material and a preparation method thereof. The material comprises the following components in parts by mass: 70-85 parts of ethylene propylene rubber, 15-30 parts of nitrile rubber, 5-15 parts of chlorosulfonated polyethylene rubber, 80-120 parts of carbon black N550, 20-50 parts of mica powder, 4-8 parts of zinc oxide, 1-4 parts of stearic acid, 15-30 parts of paraffin oil, 1-2 parts of an anti-aging agent MB, 1-2 parts of an anti-aging agent ZMTI, 2-5 parts of a peroxide vulcanizing agent DCP and 1-3 parts of an assistant crosslinker TAIC. According to the invention, a ternary rubber blending system is adopted, mica powder is introduced as a blocking agent, and a peroxide vulcanization system is adopted, so that the compatibility and co-vulcanization effect of ethylene propylene rubber and nitrile rubber are synergistically improved, so that the obtained material not only maintains the excellent aging resistance and ozone resistance of ethylene propylene rubber, but also significantly improves the non-polar oil resistance (such as 903 # oil); the volume change rate is less than or equal to 80%, the comprehensive performance is excellent, and the oil-resistant rubber composition can be widely applied to rubber parts needing oil resistance.

The application discloses a kind of anti-inflating inner tube rubber compositions and preparation method thereof, belong to rubber composition preparation technical field.The composition is composed of the following components: butyl rubber, modified ethylene-propylene-diene rubber, polyester nanofiber, soft carbon black, paraffin oil, silane coupling agent, activator, petroleum resin, antioxidant, vulcanizing agent, accelerator;The silane coupling agent is the mixture of silane coupling agent Si-69, gamma-(methacryloyloxy) propyl trimethyl silane and N-(beta-aminoethyl)-gamma-aminopropyl trimethyl (ethyl) oxysilane with mass ratio 2:1:1.The air retention and inflation stability of the composition can be greatly improved by modifying ethylene-propylene-diene rubber, limiting the proportion of butyl rubber, and limiting the substance and ratio of silane coupling agent, which improves the service life and safety performance of the inner tube.

The invention relates to the field of technical schemes, in particular to a swelling agent for removing a cured addition type high-temperature vulcanized silica gel thin layer and a preparation method of the swelling agent. The solvent comprises the following raw materials in percentage by weight: 50-90% of a main solvent; 13-60% of an auxiliary solvent; 3-10% of a cosolvent; 0.1-1% of an active promoter; the balance is a processing aid; the activity promoting material is an active agent containing fatty alcohol polyoxyethylene ether; the main solvent is petroleum ether; the auxiliary solvent is composed of 120 # solvent oil and light paraffin oil; the cosolvent is an alcohol solvent; the sum of the weight percentages of the main solvent, the auxiliary solvent, the cosolvent, the activity accelerant and the processing aid is equal to 100%, and the obtained swelling agent has better stability and has a better removal effect when being used for removing a cured addition type high-temperature vulcanized silica gel thin layer.

The present application belongs to the technical field of insect control, and particularly relates to a Cydia funebrana sex attractant and a preparation method thereof. The present application aims to provide a new option for controlling Cydia funebrana. The technical scheme of the present application is a Cydia funebrana sex attractant, which comprises sex pheromone, synergist and solvent, the ratio of the sex pheromone to the synergist is 100:10-30; the solvent is at least one of n-heptane, n-hexane, silicone oil and paraffin oil; the sex pheromone comprises (Z)-8-dodecene acetate (Z8-12:Ac) and (E)-8-dodecene acetate (E8-12:Ac), and the mass ratio of the two is (85-90):(15-10); and the synergist is n-tetradecyl acetate (N-14:Ac). The present application provides a brand new Cydia funebrana sex attractant, which can be used for efficiently trapping Cydia funebrana.

This invention relates to the field of lubricant technology, specifically to a lubricant for agricultural machinery and its preparation method. This agricultural machinery lubricant, by weight, comprises the following components: 85-93 parts of a first base oil, 2.0-3.0 parts of 1,3-bis(3-phenoxyphenoxy)benzene, 0.2-0.3 parts of zinc dialkyl dithiophosphate, 0.5-1.0 parts of a graphene-based anti-wear additive, 2.0-4.0 parts of polyisobutylene succinimide, 0.5-1.5 parts of a hindered phenolic antioxidant, 1.5-3.0 parts of hydrogenated styrene-isoprene copolymer, and 0.2-0.6 parts of polymethacrylate; wherein the first base oil comprises poly(α-olefin) PAO4 and paraffin oil in a weight ratio of 2-3:1. The agricultural machinery lubricant provided by this invention improves the anti-wear and friction-reducing properties of the graphene-based anti-wear additive, and enhances the stable dispersibility of functionalized graphene in the oil phase and its interfacial properties with the oil phase.