27 results about "Dioctyl sebacate" patented technology

The invention discloses an optical paste film and a preparation method thereof, and relates to the technical field of optical functional materials. The optical slurry film is prepared by taking a polyethylene glycol terephthalate film as a base material and coating an optical slurry coating, the optical slurry coating is prepared from the following raw materials in parts by weight: 12 to 16 parts of nano silicon dioxide, 22 to 28 parts of acetone and butanone mixed solvent, 7 to 9 parts of modified titanium dioxide, 4 to 6 parts of nano zirconium oxide, 30 to 35 parts of modified epoxy resin, 18 to 22 parts of butyl acrylate, 4 to 6 parts of dioctyl sebacate, 2.5 to 3.5 parts of silane coupling agent KH-570, 1 to 1.5 parts of organic silicon flatting agent and 0.6 to 1 part of organic silicon defoaming agent. 1.2-1.8 parts of an antioxidant 1010, 3-4 parts of a photoinitiator 184 and 6-8 parts of bis (4-tert-butylphenyl) iodine hexafluorophosphate; the polyethylene glycol terephthalate film pretreatment material comprises absolute ethyl alcohol and deionized water. The raw materials are scientifically proportioned, the titanium dioxide and the epoxy resin are clearly modified, the preparation process is complete, and the finished product is high in light transmittance, good in weather resistance, adaptive to the requirements of the optical field and high in practicability.

This invention discloses a method for preparing impact-resistant and cold-resistant polyvinyl chloride (PVC) conduit, belonging to the field of PVC material technology. In this invention, butyl rubber is complexed with dioctyl sebacate and active silica under the initiation of tert-butyl hydrogen peroxide. This complex acts as a flexible dispersed phase in the PVC matrix, effectively absorbing and dissipating impact energy and lowering the glass transition temperature of the material. This allows the conduit to maintain excellent toughness and crack resistance even at low temperatures. Furthermore, it works synergistically with impact modifiers in the system. Ethylene-vinyl acetate copolymer provides elastomer toughening, while maleic anhydride-styrene graft copolymer acts as a highly efficient compatibilizer and interfacial reinforcing agent. The compounded structure forms a toughening network, achieving toughening from molecular chain segment movement to microstructure, thus improving impact strength. Subsequent addition of reinforcing fibers of the same specification further enhances the strength of the conduit. Overall, this results in a PVC conduit with excellent strength, impact and cold resistance, and thermal properties.

The present invention discloses a method for determining the content of diethyl hexyl sebacate in polyvinyl acetate. The method comprises the following steps: (1) adding a dissolving solvent to a pretreated polyvinyl acetate sample, and after the sample is completely dissolved, adding a main precipitant dropwise to the solution until no polymer continues to precipitate, then adding a co-precipitant dropwise until the precipitation is complete, and constant volume with the co-precipitant as a test solution, wherein the co-precipitant is selected from one of isopropanol, water and heptane; (2) preparing a standard working solution; (3) performing gas chromatography-mass spectrometry analysis on the standard working solution and the test solution. The assay method proposed by the present invention can meet higher detection requirements, such as reducing the detection limit, and the method also has the advantages of being simple to operate and fast, and has a very wide range of application prospects.

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of a binder for a lithium battery. The preparation method specifically comprises the following steps: step 1, initiating polymerization of vinylidene fluoride, dioctyl sebacate and lauryl methacrylate to obtain modified polyvinylidene fluoride resin; 2, carboxymethyl chitosan is subjected to a reaction with diketoacrylamide and phthalic dihydrazide in sequence, and modified chitosan is obtained; and 3, mixing the modified polyvinylidene fluoride resin, the modified chitosan and polyvinyl alcohol, stirring and compounding to obtain the binder for the lithium battery. The binder for the lithium battery can form a plurality of hydrogen bond network structures with the surface of a negative electrode active material, so that the lithium battery has a firmer mechanical structure, and the lithium battery can bear the stress of internal volume expansion; in addition, the binding force between the negative electrode active material and the current collector can be greatly improved, the cycle performance of the battery is improved, the electrochemical performance and the safety performance of the lithium battery are ensured, and great practical application significance is achieved.

The invention belongs to the technical field of cable sheath materials, and particularly discloses a fireproof radio frequency cable for wireless communication and a preparation method thereof. The invention relates to a fireproof radio frequency cable for wireless communication, which comprises a copper core conductor, a ceramic fiber insulating layer, a copper strip embossing layer, a ceramic non-woven fabric layer, a steel strip wrapping layer, a high-temperature-resistant layer and a cable sheath, comprising the following raw materials: 50-60 parts of nitrile rubber, 22-25 parts of acrylate rubber, 13-16 parts of chlorinated polyethylene, 2-3 parts of a silane coupling agent, 17-19 parts of a composite reinforcing material, 1-2 parts of dioctyl sebacate, 1-3 parts of an antioxidant 1010, 5-8 parts of POE-g-GMA, 3-5 parts of a flame retardant and 2-4 parts of calcium stearate. The composite reinforcing material is composed of a silicon carbide compound, glass composite fibers and titanium dioxide. The durable, weather-proof and flame-retardant outer sheath is obtained, and is suitable for normal work in daily use and severe environments.

The application discloses a cold-resistant PVC conveying belt surface layer material and a light conveying belt and belongs to the technical field of PVC materials. The cold-resistant PVC conveying belt surface layer material comprises the following raw materials in parts by weight: 100 parts of PVC paste resin, 5-24 parts of a cold-resistant agent, 1.5-3 parts of an anti-aging agent, 12-23 parts of a fluorine-containing plasticizer, 3-8 parts of a fluorosilicon resin, 2-7 parts of a polyurethane elastomer, 2-6 parts of a flame retardant, 1-3 parts of nano calcium carbonate, 0.5-1.5 parts of an antioxidant, and 0.6-4 parts of a fluorosilicon surfactant. The cold-resistant PVC conveying belt surface layer material provided by the application can maintain excellent performance in a cold environment. The decanedicarboxylic acid dioctyl ester phase change material releases heat at low temperature, improving the cold resistance of the coating. In addition, the surface layer material is endowed with excellent anti-aging performance through the anti-freezing protection of glycerol, the antioxidant effect of cerium ions and the self-repairing performance of dopamine hydrochloride, so that the conveying belt can maintain stable performance in a low-temperature environment and effectively prolong the service life.

This invention relates to the field of building waterproofing materials technology, and discloses a waterproof adhesive composition, a waterproof adhesive layer and its preparation method, an ultra-low temperature resistant waterproof membrane and its preparation method and application. The composition contains: 45-65 wt% hydroxyl-terminated polybutadiene, 2-5 wt% dioctyl sebacate, and 0.5-1.5 wt% polyethylene oxide. The ultra-low temperature resistant waterproof membrane provided by this invention exhibits excellent ultra-low temperature resistance, adhesion performance, mechanical properties, waterproof performance, aging resistance and stability, and raw material compatibility.

The invention relates to the technical field of waste asphalt, in particular to a preparation process and formula of an environment-friendly waste asphalt composite regenerant, which comprises 45-50 parts of base oil, 15-20 parts of phenolic resin, 10-15 parts of epoxy resin, 5-8 parts of a functional agent, 4-7 parts of a modified silicon dioxide agent and 7-10 parts of a chemical resistant agent. According to the present invention, the aged asphalt is efficiently repaired, different aging degrees are adapted, the base oil (60N) is matched with the phenolic resin and the epoxy resin, such that the lost light component due to the aging of the waste asphalt can be supplemented, the aged molecular structure is repaired, the functional agent (dioctyl sebacate + silane coupling agent KH560) can improve the compatibility of the components, the core problems of non-uniform aging degree and poor regeneration adaptability are solved, and the application prospect is broad. And the modified silicon dioxide agent contains hard components such as silicon nitride, zirconium oxide and mullite whiskers, so that the Marshall stability of the regenerated mixture can be greatly improved.

The application provides an oil-resistant and low-temperature-resistant flame-retardant polyvinyl chloride elastomer plastic and a preparation method and application thereof, and the preparation raw material of the oil-resistant and low-temperature-resistant flame-retardant polyvinyl chloride elastomer plastic comprises the following components in parts by weight: polyvinyl chloride resin 50-70 parts, polyvinyl chloride grafted dioctyl sebacate 30-50 parts, flame retardant 23-38 parts, calcium-zinc stabilizer 6-8 parts, plasticizer 20-40 parts, lubricant 0.5-1 part; the flame retardant comprises antimony trioxide 5-8 parts, zinc borate 5-10 parts, silane coupling agent modified glass powder 5-8 parts and silane coupling agent modified wollastonite fiber 8-12 parts. The polyvinyl chloride elastomer plastic provided by the application can meet the requirements of low-temperature resistance, oil resistance and flame retardation at the same time by introducing polyvinyl chloride grafted dioctyl sebacate and a specific flame retardant system.

The invention discloses a cold-resistant PVC conveying belt surface layer material and a light conveying belt, and belongs to the technical field of PVC materials. The cold-resistant PVC conveying belt surface layer material is prepared from the following raw materials in parts by weight: 100 parts of PVC paste resin, 5 to 24 parts of cold-resistant agent, 1.5 to 3 parts of anti-aging agent, 12 to 23 parts of fluorine-containing plasticizer, 3 to 8 parts of fluorosilicone resin, 2 to 7 parts of polyurethane elastomer, 2 to 6 parts of flame retardant, 1 to 3 parts of nano calcium carbonate, 0.5 to 1.5 parts of antioxidant and 0.6 to 4 parts of fluorosilicone surfactant. The cold-resistant PVC conveyor belt surface layer material provided by the invention can keep excellent performance in a cold environment, the dioctyl sebacate phase-change material performs phase-change heat release at low temperature, the cold resistance of a coating is improved, and in addition, the cold-resistant PVC conveyor belt surface layer material has good cold resistance through the anti-freezing protection of glycerol, the anti-oxidation effect of cerium ions and the self-repairing performance of dopamine hydrochloride. The surface layer material is endowed with excellent anti-aging performance, so that the conveyer belt can keep stable performance in a low-temperature environment, and the service life is effectively prolonged.

The invention relates to the technical field of lubricating oil, and discloses aluminum foil rolling oil with ultralow oil content and a preparation method thereof, the aluminum foil rolling oil comprises 80-90% of base oil, 9-15% of a rolling oil additive and 1-5% of thiazole carbon nanotube polyester; wherein the base oil is C12 or C13 n-alkane subjected to hydrofining and precise fractionation, the rolling oil additive comprises 35-45% of dioctyl sebacate, 20-30% of an extreme pressure agent, 15-20% of a nonionic emulsifier, 8-12% of a co-emulsifier and the like, and thiazole carbon nanotube polyester is similar and compatible with dioctyl sebacate and has excellent wear resistance and corrosion resistance; through collaborative innovation of the base oil and the additive, an oil film is more firmly attached to the surface of the aluminum foil, the integrity of the oil film is guaranteed, falling and splashing of the oil film in the rolling process can be reduced, the amount of residual oil on the surface of the aluminum foil can be reduced, and the requirements of high-cleanliness fields such as food packaging and medical aluminum foil can be met.

The invention relates to equal-molecular lubricating oil with an optimized ratio and a preparation method of the equal-molecular lubricating oil, and belongs to the field of lubricating oil production, and the equal-molecular lubricating oil comprises the following substances in parts by weight: 30-50 parts of trimethylolpropane caprylic caprate; 20 to 30 parts of dioctyl sebacate; 20 to 30 parts of polypropylene glycol; 10 to 20 parts of methoxy polyethylene glycol; 12 to 18 parts of rosin pentaerythritol ester; 5 to 7 parts of cholesteryl caprylate; 3 to 5 parts of lauric acid imidazoline; 3 to 6 parts of dioctyl sodium sulfosuccinate; 5 to 9 parts of trioctyl phosphite; the molecular weight of all the selected substances is 400-600. The molecular weights of all the substances are 400-600, so that the difference of the molecular weights of the substances is small, and the substances can be uniformly dispersed after being mixed; meanwhile, the selected molecular weight section belongs to a moderate area, so that the lubricating oil is difficult to volatilize and can be stably used for a long time.

The application relates to the technical field of cables, and particularly discloses a low-temperature-resistant flexible cable and a preparation method thereof. The low-temperature-resistant flexible cable comprises a conductor, an insulation layer, a cabling unit, a shielding layer and an outer sheath which are sequentially arranged, and the raw material of the outer sheath comprises the following components in parts by weight: 100 parts of PVC resin, 12-25 parts of powder nitrile rubber, 5-15 parts of polyether TPU, 6-18 parts of maleic anhydride grafted POE, 8-18 parts of dioctyl sebacate, 6-15 parts of dioctyl adipate, 5-15 parts of polyester plasticizer, 3-8 parts of epoxy soybean oil, 4-12 parts of silane modified nano calcium carbonate, 3-6 parts of calcium-zinc composite stabilizer, 0.2-0.8 parts of antioxidant, 0.8-3 parts of matt black masterbatch, 0.5-2 parts of lubricant and 0.5-2 parts of silicone masterbatch. The cable in the application still has good flexibility in a low-temperature environment.

The application discloses a rubber compound, a rubber cloth, a low-temperature-resistant oil containment boom and a preparation method of the low-temperature-resistant oil containment boom, wherein the rubber compound is composed of the following components and contents: 60-70 parts of butyronitrile rubber, 10-20 parts of cis-butadiene rubber, 8-12 parts of polyisoprene rubber, 7-14 parts of chlorinated polyethylene rubber, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 8-12 parts of dioctyl sebacate, 55-70 parts of a filler, 3-7 parts of a silane coupling agent, 10-14 parts of a mixed accelerator and 1-4 parts of a rubber antioxidant. The rubber compound is used for further manufacturing the rubber cloth, and the rubber cloth is further used for manufacturing the low-temperature-resistant oil containment boom. The low-temperature-resistant oil containment boom product has not only good oil resistance of the ordinary oil containment boom, but also special cold resistance of the low-temperature-resistant oil containment boom, and meets the use requirements under the extremely cold conditions. The product is used by users, and the effect is generally good.

The invention discloses environment-friendly CBS with high thermal stability and a preparation method of the environment-friendly CBS in the field of rubber assistants.According to the material, N-cyclohexylbenzothiazole sulfenamide serves as a basis, and an autonomously-synthesized boron-nitrogen heterocyclic compound stabilizer and a silane-based green dispersing agent are innovatively introduced; according to the present invention, with the cooperation of the dioctyl sebacate, the calcium zinc stearate compound, the hindered phenol antioxidant and other components, the composite material is prepared through the precise ratio and the melting composite process; the preparation method comprises the key steps of raw material pretreatment, high-speed mixing, multi-temperature-zone controllable extrusion, underwater pelletizing, cryogenic crushing and the like. The two key modified compounds are synthesized through a boron-nitrogen heterocyclic ring construction reaction and a silane-based polyurethane grafting reaction respectively. The heat stability of the product and the dispersity of the product in a rubber matrix are remarkably improved, meanwhile, the environment-friendly characteristic is good, the safe operation time of rubber processing is effectively prolonged, the physical performance of vulcanized rubber is improved, and the rubber composition is suitable for production of high-performance rubber products.

The application relates to the technical field of data center equipment cooling, and discloses an environmentally-friendly immersed liquid cooling system conducting medium and a preparation method thereof, the conducting medium is composed of a base oil composition, 0.3%-0.6% of polyisobutylene succinimide, 0.02%-0.05% of tetrahydrobenzene propyl triazole, 0.2%-0.5% of epoxy propane butyl ether, 0.1%-0.3% of epoxy soybean oil, 0.1%-0.3% of alkylated phenyl alpha naphthylamine and 3.0%-5.0% of toluene diphenyl phosphate, and the base oil composition is composed of 70.0%-85.0% of poly-alpha-olefin, 5.0%-10.0% of dioctyl sebacate and 15.0%-25.0% of coal CTL base oil treated by molecular distillation. The conducting medium has the advantages of low viscosity, high flash point, high breakdown voltage, low dielectric loss, good thermal oxidation stability, flame retardancy and environmental protection, and is suitable for high heat flux density electronic devices, data centers, AI computing power centers and other immersed liquid cooling scenes.

The invention relates to the technical field of copper pipe processing lubrication, in particular to cleaning-free air conditioner copper pipe coil drawing inner film forming oil and a preparation method thereof.The cleaning-free air conditioner copper pipe coil drawing inner film forming oil is prepared from, by mass, 25%-45% of a lubrication carrier, 1%-5% of an antirust agent, 10%-15% of an extreme pressure agent and the balance a composite oiliness agent, the polyisobutene is used as the sole base oil, the antirust agent is benzotriazole, the extreme pressure agent is ammonium phosphate, and the composite oiliness agent is a mixture of 5-10% of trimethylolpropane trioleate, 10-15% of pentaerythritol oleate and 15-25% of dioctyl sebacate. The viscosity is adjusted through the cooperation of the molecular weight of the polyisobutene and the ester oiliness agent, solvent dilution is not needed, the residual quantity after nitrogen purging is smaller than 0.01%, in addition, the winding characteristic of a molecular chain of the polyisobutene is cooperated with the ester oiliness agent, the toughness of an oil film is improved by 40%, and the requirements for high-load and long-distance drawing of air conditioner copper pipe coil drawing are met.

The invention discloses a preparation process of a PVC (polyvinyl chloride) base film for a protective film. Comprising the following steps: step 1, stirring polyvinyl chloride, modified nitrile rubber, a light stabilizer, a lubricant, a calcium-zinc stabilizer, epoxidized soybean oil and an inorganic filler at 30-40 DEG C for 20-30 minutes, then raising the temperature to 60-70 DEG C, adding dioctyl sebacate in batches, and stirring for 10-20 minutes to obtain a mixed base material; and 2, transferring the mixed base material into a double-screw extruder for granulation, and then carrying out film pressing molding by using a film pressing machine to obtain a finished product. The PVC protective film has the beneficial effects that through the synergistic effect of the modified nitrile rubber and the PVC matrix, the comprehensive performance of the protective film is remarkably improved, and the protective film has excellent mechanical strength, flame retardance and oxidation resistance.

The invention discloses an optical cable secondary coating material based on a thermoplastic elastomer and a preparation method thereof, the optical cable secondary coating material comprises the following components by weight: 65-75 parts of a TPEE base material, 10-15 parts of a special low temperature resistant plasticizer, and 9-13 parts of an auxiliary agent; wherein the freezing point of the special low-temperature-resistant plasticizer is less than or equal to-60 DEG C; the volatilization decrement at the temperature of 25 DEG C for 24 hours is less than or equal to 0.5 wt%; the solubility parameter difference delta delta with the TPEE base material is less than or equal to 1.0 (J / cm) 1 / 2; the special low temperature resistant plasticizer is dioctyl oxalate or dioctyl sebacate or diisononyl oxalate; the invention further discloses a preparation method of the optical cable secondary coating material based on the thermoplastic elastomer. The low-temperature flexibility of the TPEE base material can be improved on the premise that the mechanical strength is not sacrificed; meanwhile, through the flexible structure of plasticizer molecules, the elasticity and flexibility of the material in a low-temperature environment are improved.

The invention provides a process for improving the surface wettability of a tin-plated plate, which comprises the following steps of: 1, carrying out tin plating treatment on the surface of a steel plate to obtain the tin-plated plate; secondly, the tin plate is subjected to electrolytic passivation treatment through sodium dichromate; 3, discharging treatment is conducted on the surface of the passivation layer, the passivation layer is a composite passivation film composed of Cr2O3 and Cr (OH) 3, through discharging treatment, Cr (OH) 3 is decomposed to obtain Cr2O3, so that the polarity of the passivation layer is improved, and the polarity adsorption capacity of the passivation layer to paint is improved; 4, finally, dioctyl sebacate is sprayed on the surface of the passivation layer, wherein the dioctyl sebacate is DOS oil; and fifthly, gas generated after discharging treatment in the third step is collected and then blown to the surface of the tin plate obtained in the fourth step. According to the invention, the dyne value can be increased to 42 mN / m, the coating requirements of different coating varieties are met, the occurrence rate of shrinkage cavity defects of printed and coated products is effectively reduced, and the wetting effect of the coating on the surface of a tin plate is improved.

The invention relates to the technical field of cable materials, in particular to a flexible sheath material for a cable and a preparation method of the flexible sheath material. The flexible sheath material for the cable is prepared from the following components in parts by weight: 30 to 45 parts of SEBS (Styrene-Ethylene-Butylene-Styrene), 20 to 30 parts of POE (Polyolefin Elastomer), 15 to 25 parts of EVA (Ethylene-Vinyl Acetate), 15 to 25 parts of dioctyl sebacate, 5 to 8 parts of triphenyl phosphate, 1.5 to 2 parts of silane coupling agent KH-792, 1 to 1.5 parts of calcium stearate, 8 to 12 parts of functional additive, 1 to 1.5 parts of antioxidant, 0.6 to 1 part of light stabilizer and 8 to 12 parts of filler. The sheath material prepared by the invention not only has excellent mechanical properties and flexibility, but also has outstanding flame retardance and ultraviolet aging resistance, and the service life of the sheath material is prolonged to a certain extent while the quality of the sheath material is ensured.

The invention discloses a waterproof and oil-resistant modified rubber sheath material which comprises the following components in parts by mass: 80-100 parts of nitrile rubber; 20 to 30 parts of fluororubber; 5 to 10 parts of a nano titanium boride-silane composite modifier; 8 to 15 parts of a perfluoropolyether-polyurethane copolymer; 3 to 6 parts of graphene-carbon nanotube composite conductive filler; 3-5 parts of zinc oxide; 1-2 parts of sulfur; 1-2 parts of an accelerant DM; 0.5 to 1 part of an accelerant TMTD; 15 to 20 parts of fast extruding furnace black; 10 to 15 parts of nano calcium carbonate; 8 to 12 parts of dibutyl phthalate; 5 to 8 parts of dioctyl sebacate; 0.5 to 1 part of an anti-aging agent MB; 0.5 to 1 part of an anti-aging agent 4010NA; the sheath material has excellent waterproof performance, a layer of compact waterproof film is formed on the surface of the sheath material by adding the perfluoropolyether-polyurethane copolymer, moisture permeation is effectively prevented, and the waterproof performance of the sheath material is improved.

The invention discloses a butyronitrile glove convenient to wear and take and a preparation method thereof, and relates to the technical field of butyronitrile glove preparation, the butyronitrile glove convenient to wear and take comprises the following materials: butyronitrile latex, a reinforcing agent, zinc stearate, polyglycerol ricinoleate, nano silicon dioxide, nano calcium carbonate, a vulcanizing agent, n-butyl zinc xanthate and an organic silicon defoamer; by adding the functional agent, the slow release of dioctyl sebacate is realized, the acting force between butyronitrile molecular chains is continuously reduced, and the low-temperature flexibility is improved; through the synergistic effect of zinc stearate, silicon dioxide and polyglycerol ricinoleate, it is ensured that a lubricating layer and reinforcing particles are evenly distributed, local hard spots or lubricating blind areas are avoided, the gloves are smooth in the whole wearing process, and smoothness and durability are both considered; through the synergistic effect of the vulcanizing agent and the zinc n-butyl xanthate, the defect that single zinc n-butyl xanthate has no crosslinking activity is overcome, it is ensured that the overall mechanical properties of the gloves are consistent, and a mechanical basis is provided for convenient wearing and taking.

The invention relates to the technical field of lubricating materials, in particular to graphene lubricating grease special for an electric tool angle grinder and a preparation method of the graphene lubricating grease. The invention aims to solve the problem that the graphene lubricating grease in the prior art cannot give consideration to high and low temperature resistance and wear resistance at the same time. The preparation method comprises the following steps: taking PAO and dioctyl sebacate compounded base oil as a dispersion medium, and constructing an interpenetrating network framework by adopting a lithium-based soap and polyurea composite thickening agent; meanwhile, a synergistically enhanced composite graphene filler system is introduced, the system comprises stearic acid modified graphene providing an oleophylic anchoring effect and functionalized graphene providing an electrostatic stabilization effect, graphene aerogel microspheres are added to construct a three-dimensional heat-conducting network, and an organic sulfur-molybdenum anti-wear agent and an antioxidant are used as auxiliary materials, so that the heat-conducting composite material is prepared. The graphene lubricating grease is obtained through high-temperature refining; the prepared lubricating grease has excellent anti-wear and anti-friction performance and wide-temperature-range working capacity, the service life is remarkably prolonged, and the lubricating grease is particularly suitable for the harsh working condition of an electric tool angle grinder.

The present invention relates to the field of rubber compound technology, and in particular to a kind of marine breathing mask body rubber compound and its application. The object of the present invention is to provide a kind of rubber compound with high vulcanization efficiency, strong tear resistance, aging resistance and non-deformation, which meets the scene use requirements of the mask. The rubber compound comprises the following raw materials in parts by weight: 60 parts of brominated butyl rubber, 40 parts of natural rubber, 8-12 parts of zinc oxide (indirect method), 6.4-9.6 parts of magnesium oxide, 0.5-2.5 parts of accelerator PX, 0.5-2.5 parts of industrial stearic acid, 1.5-3 parts of antioxidant 264, 1.5-3 parts of antioxidant MB, 1.5-3 parts of semi-refined paraffin, 2-5 parts of dioctyl sebacate, 20-50 parts of medium and super wear-resistant furnace black, 5-8 parts of high wear-resistant furnace black, and the mask prepared using the formula of the present invention has the characteristics of good airtightness, fast vulcanization rate, high tear strength, aging resistance and anti-deformation.

The invention relates to the technical field of cable materials, and discloses a cold-resistant PVC cable material and a preparation method thereof. The cold-resistant PVC cable material comprises 50 parts of polyvinyl chloride resin with the polymerization degree of 2500, 50 parts of polyvinyl chloride resin with the polymerization degree of 1300, 15 parts of dioctyl sebacate, 45 parts of dioctyl phthalate, 8 parts of a calcium / zinc composite stabilizer, 1 part of polyethylene wax, 5 parts of a low-temperature-resistant modifier, 5 parts of nitrile rubber powder, 1 part of bisphenol A, 1 part of an anti-aging agent and 15 parts of modified nano calcium carbonate. According to the cold-resistant PVC cable material and the preparation method thereof, the PVC cable material with high cold resistance is prepared by screening the formula, and in the granulation process of the cable material, the common strip breaking working condition is intelligently handled, the strip breaking area is timely cleared, the specification standard of cable material granulation is guaranteed, and the quality of the cable material is improved.

The invention discloses a polyvinyl chloride cable with excellent mechanical properties and a preparation method, and relates to the technical field of cables, the polyvinyl chloride cable comprises a cable core and a cable sheath material; the cable core is a copper core; the cable sheath material is prepared from the following components in parts by weight: PVC resin, polyethylene wax, silicon carbide, calcium carbonate, composite inorganic fibers, an antioxidant, a calcium-zinc stabilizer, stearic acid, dioctyl sebacate and borate. The prepared polyvinyl chloride cable has excellent mechanical properties, can be applied to various electric power fields, and is relatively long in service life. According to the cable sheath material disclosed by the invention, the polyvinyl chloride resin is used as a base material, so that the cable sheath material has excellent insulating property and processability, and the strength and toughness of the cable sheath material can be further improved through the cooperative synergistic effect of all the components.