249 results about "Chlorinated polyethylene" patented technology

The invention provides an acetylacetone-based composite thermal stabilizer which is a mixture obtained by mixing zinc acetylacetonate, calcium acetylacetonate or magnesium acetylacetonate and hydrotalcite pro rata. The composite thermal stabilizer is suitable for chloride-containing high polymer, such as polyvinyl chloride, chlorinated polyethylene, chlorinated polyvinyl chloride, copolymer of vinyl chloride-ethylene or copolymer of vinyl chloride-vinyl acetate, has better thermal stability, prolongs the thermal aging time of the chloride-containing high polymer, and overcomes the shortcomings of poor long-term performance of single stabilizer of zinc acetylacetonate, poor transparency of stabilizer of calcium acetylacetonate, and poor initial colorability of stabilizer of hydrotalcite. The composite thermal stabilizer has low cost, good initial colorability, excellent long-term performance and good transparency, and is an efficient composite thermal stabilizer.

The invention discloses a flame-retardant flat flexible high-current cable and a preparation method thereof, and relates to the technical field of cables. The cable comprises a flat conductor, an insulating layer, a shielding layer, a reinforcing layer and a sheath layer, the insulating layer contains 85-90 parts of low-density polyethylene, 1.2-1.5 parts of dicumyl peroxide, 12-15 parts of modified aluminum hydroxide and the like; and the sheath layer contains 42-50 parts of modified chlorinated polyethylene, 28-34 parts of modified aluminum hydroxide and the like. The modified chlorinated polyethylene is prepared through a three-step extrusion reaction, and the modified aluminum hydroxide is subjected to coupling agent treatment, coating modification and carbon nanotube composite modification. The flame-retardant flat flexible large-current cable has prominent advantages, an efficient flame-retardant system is constructed by modified aluminum hydroxide and antimony trioxide, and the V-0 level requirement of UL94 can be met; the flat structure is combined with the modified chlorinated polyethylene, so that the flexibility is excellent and the temperature-resistant range is wide. The design of the insulating layer and the shielding layer ensures excellent electrical performance, segmented temperature control and accurate parameter regulation and control are performed in preparation, stable product quality is ensured, and the device can adapt to a large-current application scene.

The invention discloses an anti-aging and low-temperature-resistant PVC (polyvinyl chloride) foaming material with flexibility and strength and a preparation method of the anti-aging and low-temperature-resistant PVC foaming material. Comprising the following components: 60-80 parts of polyvinyl chloride resin, 10-20 parts of chlorinated polyethylene (CPE), 5-15 parts of ethylene-vinyl acetate copolymer (EVA), 20-35 parts of a composite plasticizer, 5-12 parts of nano calcium carbonate, 3-8 parts of modified montmorillonite, 6-12 parts of a composite stabilizer, 3-7 parts of a foaming agent, 1-3 parts of a cross-linking agent, 1-3 parts of an antioxidant, 0.5-2 parts of an ultraviolet light absorber, 5-10 parts of a cold-resistant plasticizer and 1-3 parts of a lubricant. According to the invention, the raw material components and the ratio are reasonably selected, so that the prepared PVC foaming material has good flexibility and strength. The addition of chlorinated polyethylene and ethylene-vinyl acetate copolymer can improve the flexibility of the material, the addition of nano calcium carbonate and modified montmorillonite enhances the strength of the material, and the use of the composite plasticizer also plays a positive role in the balance of flexibility and strength.

The invention relates to the technical field of rubber hoses, in particular to a pressure-resistant and oil-resistant rubber hose and a preparation method thereof.The preparation method comprises the following steps that S1, nitrile rubber, chloroprene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, sulfur, an accelerant and an anti-aging agent are added into an internal mixer to be evenly mixed, the temperature is controlled for mixing, sheet discharging is conducted, a pipe blank is extruded through an extruder, and the pipe blank is obtained; a combined rubber layer is obtained; s2, the combined rubber layer, the woven copper-plated steel wire layer, the reinforcing layer, the spiral zinc-plated spring steel wire layer, the reinforcing layer, the woven copper-plated steel wire layer and the combined rubber layer are subjected to interlayer bonding in sequence, and the assembled hose is obtained; and S3, the assembled hose is put into a vulcanizing tank to be subjected to vulcanizing treatment. By adopting the seven-layer composite structure design, the rubber hose disclosed by the invention can be in contact with a strong corrosive medium for a long time without internal corrosion, so that the service life of the hose is prolonged, and the safety of the hose in the use process is also improved.

The present invention relates to the technical field of cable preparation, and in particular to a low-temperature-resistant, flame-retardant, and UV-resistant PVC cable sheath composition, a preparation method thereof, and a cable. The composition is based on polyvinyl chloride, supplemented with a chlorinated polyethylene elastomer, an environmentally friendly plasticizer, and a calcium-zinc stabilizer, and introduces nano-magnesium hydroxide, zinc stannate, passivated zinc borate, sodium tungstate, and modified montmorillonite to form a multi-component synergistic flame retardant system, which significantly improves the flame retardancy, low smoke properties, and thermal stability of the material. At the same time, through the synergy of ultraviolet absorbers and antioxidants, the weather resistance and service life of the material are enhanced. The prepared cable sheath material has excellent low-temperature flexibility, flame retardant and smoke suppression properties, and ultraviolet aging resistance, and is suitable for high-performance cable applications in harsh environments.

The invention relates to the field of polyethylene composite materials, and discloses an impact-resistant high-density polyethylene composite material and a preparation method thereof.The impact-resistant high-density polyethylene composite material is prepared from, by weight, 60-70 parts of matrix resin, 5-11 parts of flexibilizer, 4-9 parts of inorganic filler, 1-3 parts of compatilizer, 0.5-1.5 parts of antioxidant and 2-4 parts of ultraviolet stabilizer, the matrix resin is high-density polyethylene with the molecular weight of 90,000-120,000, and the flexibilizer is a compatilizer. The flexibilizer is chlorinated polyethylene, the chlorine content is 25 + / -1 wt%, the inorganic filler is modified talcum powder, the D50 particle size is smaller than or equal to 3 microns, and the length-diameter ratio is larger than or equal to 10. The surface of the talcum powder is modified by gamma-aminopropyltriethoxysilane, and the length-diameter ratio of the particle size is controlled, so that the chemical bonding effect of the filler and a high-density polyethylene matrix is enhanced, the high-efficiency transmission and uniform dispersion of stress are facilitated, and the local stress concentration phenomenon under the impact load is effectively inhibited.

The invention relates to a protective sleeve for a flame-retardant cable, a preparation method of the protective sleeve and the flame-retardant cable. The protective sleeve for the flame-retardant cable comprises the following components in parts by weight: 40-60 parts of chlorinated polyethylene, 1-10 parts of a polyolefin elastomer, 1-10 parts of modified magnesium hydroxide, 1-10 parts of an antimony-containing flame retardant and 1-8 parts of modified magnesium-aluminum hydrotalcite. The flame-retardant cable comprises a conductor, an insulating layer and the protective sleeve, wherein the insulating layer comprises the following components in parts by weight: 40-60 parts of ethylene propylene diene monomer and 30-60 parts of modified magnesium hydroxide. The formula of the protective sleeve for the flame-retardant cable is reasonably designed, so that the prepared protective sleeve has excellent flame retardance, torsion resistance and aging resistance. The flame-retardant cable is further matched with a protective sleeve and an insulating layer containing modified magnesium hydroxide, and the flame-retardant cable which is suitable for wind power generation and passes an A-type bunching combustion test is prepared.

The invention provides a high-strength corrosion-resistant CPVC plate and a preparation method thereof, and belongs to the technical field of high polymer materials, the preparation method comprises the following steps: S1, preparing Si-MBS; s2, mixing CPVC resin powder, Si-MBS, chlorinated polyethylene, a stabilizer, a processing aid, a lubricant and a coupling agent-hollow microsphere, melting, plasticizing, extruding, calendaring to form a plate, and cooling and shaping to obtain a CPVC base material; and S3, spraying the coating slurry containing ZIF-67 / GO-coated BTA / PEI powder on the surface of the CPVC base material, vacuumizing, and curing to obtain the high-strength corrosion-resistant CPVC plate. The overall strength and impact resistance can be improved, and meanwhile the overall corrosion resistance is improved.

The invention discloses a corrosion-resistant cable material, an energy storage cable and a preparation method of the corrosion-resistant cable material, and belongs to the technical field of cables. The corrosion-resistant cable material comprises the following raw materials: a hexadecylamine functionalized graphene bentonite copolymer, modified epoxy resin E5, chlorinated polyethylene, a plasticizer, paraffin, mica powder and an antioxidant. The hexadecylamine functionalized graphene bentonite copolymer is obtained by adding acidified bentonite into a graphene dispersion liquid, stirring and then carrying out hydrophobic modification through hexadecylamine; the modified epoxy resin E51 and 5-aminosalicylic acid are subjected to a hydrothermal reaction to obtain nitrogen-doped quantum dots, the nitrogen-doped quantum dots are ultrasonically mixed with ethyl alcohol, then the waterborne curing agent is added, then the epoxy resin E51 is added, and high-speed stirring is performed to obtain the cable material, the cable material has good waterproofness, corrosion resistance and mechanical performance, and stable operation of an energy storage cable can be guaranteed.

The invention relates to the technical field of high polymer materials, and particularly discloses high-weather-resistance chlorinated polyethylene and a preparation method thereof. The high-weather-resistance chlorinated polyethylene is prepared from the following raw materials in parts by weight: 110 to 150 parts of chlorinated polyethylene, 9 to 15 parts of chloroprene rubber coated nano titanium dioxide, 38 to 60 parts of ionic liquid modified nano calcium carbonate, 5 to 10 parts of polyvinylidene fluoride resin, 10 to 20 parts of chlorinated paraffin and 1 to 6 parts of antioxidant, the preparation method comprises the following steps: S1, preparing chloroprene rubber coated nano titanium dioxide; s2, preparing ionic liquid modified nano calcium carbonate; s3, internal mixing; and S4, carrying out screw extrusion and press polish. The high-weather-resistance chlorinated polyethylene can be used for building waterproof coiled materials, outdoor protective coatings, automobile sealing strips, wire and cable sheaths and the like, and has the advantages of high tensile strength, elongation at break, impact toughness, ultraviolet aging resistance and thermo-oxidative degradation resistance.

The invention discloses a preparation method of high-strength chlorinated polyethylene resin, and relates to the technical field of chlorinated polyethylene preparation. The chlorinated polyethylene resin is prepared from the following raw materials: chlorinated polyethylene, a chlorinated polyethylene grafted copolymer, polyamide 6 micro powder, modified nano silicon dioxide, a mixed solvent and hexamethylene diisocyanate; the chlorinated polyethylene grafted copolymer is a grafted copolymer of allyl glycidyl ether and chlorinated polyethylene; the modified nano silicon dioxide is silane coupling agent surface modified nano silicon dioxide; the mixed solvent is obtained by mixing methylbenzene and dioxane. The preparation method of the high-strength chlorinated polyethylene resin comprises the following steps: preparing a chlorinated polyethylene grafted copolymer, carrying out solution mixing dispersion and cross-linking reaction, and preparing the chlorinated polyethylene resin. The chlorinated polyethylene resin prepared by the invention has relatively high strength and excellent corrosion resistance.

The invention relates to the technical field of underground cables, and provides a wear-resistant cable for a shield tunneling machine and a preparation method of the wear-resistant cable. The wear-resistant cable for the shield tunneling machine comprises a conductor, an insulating layer, an armor layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer is prepared from the following raw materials in parts by weight: 90-100 parts of polyvinyl chloride, 8-14 parts of chlorinated polyethylene, 8-10 parts of a plasticizer, 9-16 parts of filler, 1-4 parts of a stabilizer, 1-2 parts of an antioxidant, 1-3 parts of a lubricant, 1-3 parts of a compatilizer and 1-2 parts of a vulcanizing agent; the chlorinated polyethylene comprises first chlorinated polyethylene and second chlorinated polyethylene; the Mooney viscosity of the first chlorinated polyethylene is 40-60 under the conditions of ML1 + 4 and 121 DEG C; and the Mooney viscosity of the second chlorinated polyethylene is 70-90 under the conditions of ML1 + 4 and 121 DEG C. According to the technical scheme, the problem of poor impact strength of the wear-resistant cable for the shield tunneling machine in the prior art is solved.

The invention discloses a high-temperature-resistant low-permeability CPVC chemical pipe and a preparation process thereof, and relates to the technical field of CPVC, and the preparation method comprises the following steps: adding chlorinated polyethylene powder, quaternary ammonium salt sodium carboxymethyl cellulose modified boron nitride nanosheets, a heat stabilizer, p-phenylenediamine and terephthaloyl chloride into a mixer, heating to 80-90 DEG C, stirring for reaction for 45-60 min, and cooling to room temperature to obtain the high-temperature-resistant low-permeability CPVC chemical pipe. A premix is obtained; and adding the premix into a double-screw extruder, adding calcium stearate, and carrying out melt blending, extrusion molding, room-temperature vacuum setting and cooling setting to obtain the high-temperature-resistant low-permeability CPVC chemical pipe. The heat stabilizer is composed of an adenine metal complex and theophylline.

The utility model discloses a water circulation system of a chlorinated polyethylene device, and belongs to the technical field of fine chemical engineering. The system comprises a hot water pool and a cold water pool, the output end of the cold water pool is respectively connected with a jacket of a chlorination kettle, a jacket of a material waiting kettle, a drying system and a belt filter, the output end of heating steam is connected with the jacket of the chlorination kettle and the drying system, and the jacket of the chlorination kettle and the output end of the drying system are connected with the hot water pool. According to the utility model, the water resource at the jacket outlet of the chlorination reaction kettle is fully utilized.

Hoses include inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, and the cover layer and / or inner tube is based on a cured composition formed from a mixture containing a blend of chlorinated polyethylene (CPE) and cross-linkable oxidized high density polyethylene (oxidized HDPE), where the CPE and oxidized HDPE are blended in a CPE:oxidized HDPE weight ratio of from 10:1 to 1:1, and a peroxide curing system. The peroxide curing system used in some compositions according the disclosure include alpha-alpha-bis(t-butylperoxy)diisopropylbenzene and trimethylolpropane trimethacrylate.

The application relates to the field of epoxy resin modification, in particular to a preparation method of a self-emulsifying epoxy resin. The method overcomes the defects of the prior art, such as the need to add an emulsifier and mechanical stirring for emulsification, easy demulsification, low epoxy value and the like. The preparation method comprises the following steps: firstly, adding a Lewis acid into a mixed solution of polyethylene glycol and epoxy chloropropane to prepare one-side chlorinated polyethylene glycol; secondly, adding bisphenol A into the one-side chlorinated polyethylene glycol system to make the one-side hydroxyl group of the bisphenol A graft with polyethylene glycol through a Williamson ether reaction under the catalysis of alkali; and thirdly, adding epoxy chloropropane into the bisphenol A solution grafted with one-side polyethylene glycol to make the other-side hydroxyl group of the bisphenol A graft with an epoxy group under the catalysis of alkali, so as to prepare the epoxy resin with self-emulsifying effect. The raw materials of the reaction method are cheap and easy to obtain, the method is simple, the toxicity is relatively small, there is no by-product after the reaction is completed, and the environment pollution is relatively small. The reaction raw material utilization rate is high, the yield is high, the method meets the concept of green paint, and can be widely applied to the industrial production fields of paint and material.

The invention provides a wear-resistant PVC decorative film and a preparation method thereof, and relates to the field of composite films. Comprising a PVC base material layer, a bonding layer and a film covering layer which are sequentially arranged. The PVC base material layer is prepared from the following raw materials in parts by weight: 90 to 100 parts of PVC resin, 10 to 20 parts of chlorinated polyethylene resin, 1 to 5 parts of plasticizer, 1 to 5 parts of lubricant, 5 to 10 parts of montmorillonite / nano silicon dioxide compound and 1 to 5 parts of calcium-zinc compound stabilizer; the film coating layer is prepared from the following raw materials in parts by weight: 90 to 100 parts of PET (Polyethylene Terephthalate) resin; the adhesive is prepared from the following components in parts by weight: 10 to 20 parts of polyisocyanate, 5 to 10 parts of acrylate copolymer, 1 to 5 parts of modified flake alumina, 1 to 5 parts of modified glass flake and 0.1 to 0.2 part of dibutyltin dilaurate. And the bonding layer is a silicone adhesive. And the wear-resisting performance is good, the bonding strength between layers is high, and the service life is long.

The present application belongs to the field of hydrochloric acid concentration equipment, and particularly relates to a chlorinated polyethylene production process by-product hydrochloric acid concentration system, which comprises a resolving tower and a condensing section dilute hydrochloric acid input tank, the condensing section dilute hydrochloric acid input tank is connected with an absorption tank and a dilute hydrochloric acid buffer tank, the output end of the dilute hydrochloric acid buffer tank is connected with the liquid input end of the resolving tower, the gas input end of the resolving tower is connected with a reboiler, the gas output end of the resolving tower is connected with the absorption tank, and the output end of the absorption tank is connected with a concentrated hydrochloric acid storage tank. The present application divides the condensed dilute hydrochloric acid generated in the condensing section of the chlorinated polyethylene production process into three parts, reduces the types of system raw materials, reduces the difficulty of material preparation, increases the concentration of dilute hydrochloric acid through the resolving formed hydrogen chloride, improves the concentration of hydrochloric acid, and improves the economic value of the product.

The present disclosure relates to a polyethylene, which is reacted with chlorine to prepare a chlorinated polyethylene having excellent chlorination productivity and thermal stability by enabling an increase in chlorination temperature, and facilitating deoxidation, dehydration and drying processes during chlorination processing, by implementing an enlarged area of the middle and high molecular weight regions in the molecular structure of the polyethylene.

The invention discloses a flame-retardant fireproof hose and a preparation method thereof, and relates to the technical field of flame-retardant fireproof materials. The invention discloses a flame-retardant fireproof hose. The flame-retardant rubber material is prepared from the following raw materials in parts by weight: 60 to 80 parts of ethylene propylene diene monomer, 20 to 30 parts of chlorinated polyethylene, 5 to 12 parts of dioctyl phthalate, 1 to 3 parts of stearic acid, 40 to 60 parts of modified magnesium hydroxide, 5 to 10 parts of antimony trioxide, 2 to 5 parts of nano silicon dioxide, 8 to 15 parts of decabromodiphenyl ether, 3 to 8 parts of carbon black, 15 to 25 parts of modified glass fiber and 1.5 to 3 parts of dicumyl peroxide. And sufficient polyvinyl chloride flame-retardant coating is provided. The flame-retardant fireproof hose is scientific in raw material ratio, the ethylene propylene diene monomer and the chlorinated polyethylene synergistically improve the toughness of a matrix, and the modified magnesium hydroxide and the modified glass fibers enhance the flame retardance and mechanical properties; the preparation process is rigorous, uniform dispersion of the filler is ensured through multi-step modification, and vulcanization and spraying parameters are accurate and controllable; the product is excellent in flame retardance, high in process reproducibility, suitable for large-scale production and capable of meeting the fireproof requirements of various scenes.

The invention relates to a corrosion-resistant marine cable and a preparation method thereof.The corrosion-resistant marine cable comprises a wire core composed of a conductor and an insulating layer wrapping the conductor, and further comprises a gradient composite corrosion-resistant sheath wrapping the wire core, and the gradient composite corrosion-resistant sheath is of a three-layer co-extrusion integrated structure and comprises a bottom layer combined with the insulating layer, the bottom layer comprises the following components in parts by weight: 80-90 parts of thermoplastic polyurethane and 10-20 parts of a corrosion inhibitor; the middle layer is coated outside the bottom layer and comprises the following components in parts by weight: 90-99 parts of chlorinated polyethylene and 1-10 parts of graphene modified epoxy resin; and the surface layer is coated outside the middle layer and comprises the following components in parts by weight: 95-99 parts of fluororubber and 1-5 parts of carbon nanotubes. When the corrosion-resistant marine cable is applied to a complex corrosion environment with high salt mist and much oil dirt in the ocean, the corrosion-resistant marine cable has good comprehensive protection capability, and the service life of the cable is remarkably prolonged.

The application belongs to the technical field of polymer materials, and particularly discloses a high-pore-volume special resin for chlorinated polyethylene and a preparation method thereof, which comprises the following steps: S1, powder polyethylene resin is put into a first stirring kettle, vacuum is drawn to a predetermined vacuum degree, constant pressure is kept, and oxygen in the first stirring kettle and the pores of the polyethylene resin is discharged; S2, inert gas is introduced into the first stirring kettle to a predetermined pressure, the inert gas is allowed to permeate into the pores of the polyethylene resin, and the temperature is raised to a predetermined temperature; as the temperature rises, the polyethylene resin gradually softens; S3, the softened polyethylene resin filled with inert gas is transported to a low-temperature and low-pressure second stirring kettle, under the action of pressure difference, the inert gas in the pores of the polyethylene resin instantaneously expands and releases, the pores of the softened resin are enlarged by the gas expansion effect, and as the polyethylene resin is in a low-temperature environment, the polyethylene resin solidifies, the resin pores no longer shrink, and thus the high-pore-volume special resin for chlorinated polyethylene is obtained.

The application relates to the technical field of polyvinyl chloride sleeves, and discloses a flame-retardant PVC sleeve and a preparation method thereof. The flame-retardant PVC sleeve comprises an inner tube, a metal copper mesh coated on the outer side of the inner tube, and an outer tube coated on the outer sides of the metal copper mesh and the inner tube by injection molding. The raw material of the inner tube comprises the following components: 80-150 parts of polyvinyl chloride, 1-3 parts of chlorinated polyethylene, 20-40 parts of active nano calcium carbonate, 1-2 parts of paraffin, 1-2 parts of stearic acid, 1-3 parts of a flame retardant, and 1-2 parts of a calcium-zinc stabilizer. The raw material of the outer tube comprises the following components: 50-120 parts of polyvinyl chloride, 1-5 parts of activated fiber, 10-20 parts of active nano calcium carbonate, 1-2 parts of zeolite powder, 1-2 parts of magnesium oxide, 1-2 parts of paraffin, 1-2 parts of polyethylene wax, 1-2 parts of stearic acid, 1-5 parts of a flame retardant, 1-3 parts of a calcium-zinc stabilizer, and 1-2 parts of a processing aid LPA40. The application further discloses a preparation method of the flame-retardant PVC sleeve.

The invention relates to the technical field of wire and cable manufacturing, in particular to an anti-corrosion cable and a preparation method thereof, and the anti-corrosion cable comprises a conductor, an anti-corrosion isolating layer, an insulating layer, an armor layer and an outer sheath from inside to outside. The surface of the conductor is plated with an aminated graphene-nickel-phosphorus composite plating layer; the anti-corrosion isolating layer contains 30-40 parts of fluorine rubber, 10-15 parts of nano boron nitride-silicon dioxide core-shell particles and the like; the insulating layer contains 45-55 parts of crosslinked polyethylene, 8-12 parts of montmorillonite-carbon nanotube-graphene composite powder and the like; the armor layer is formed by compounding a basalt fiber-glass fiber composite filament woven mesh and a polyether-ether-ketone-polyimide composite film; and the outer sheath contains 25-35 parts of chlorinated polyethylene, 5-8 parts of nano titanium dioxide-cerium oxide composite powder and the like. The corrosion-resistant cable has the advantages of corrosion resistance, strong weather resistance, excellent electrical and mechanical properties, long service life and low maintenance cost, can stably operate for a long time in severe environments such as high salinity and high humidity, and is suitable for multi-corrosion scenes.

The utility model relates to the technical field of liquid chlorine conveying, and discloses a liquid chlorine conveying device for producing chlorinated polyethylene, which comprises a liquid chlorine conveying pipe and a support plate, a fixing sleeve is fixedly mounted on the outer surface of the liquid chlorine conveying pipe, and a connecting sleeve is movably mounted in the fixing sleeve. Compared with a traditional device, the liquid chlorine conveying pipe and the connecting pipe can be in butt joint conveniently through the wedge block, the second spring, the third spring and the fixing groove, so that the tedious installation process is simplified, the installation time and the labor cost are remarkably reduced, and the device can be put into use rapidly; the liquid chlorine conveying device is simple in structure and convenient to use, tight connection between the connecting pipe and the liquid chlorine conveying pipe is guaranteed, the sealing performance of equipment is enhanced, the leakage risk is effectively avoided, safe conveying of liquid chlorine is guaranteed, in addition, the design facilitating butt joint greatly facilitates follow-up maintenance and overhaul work, and the maintenance difficulty and cost are reduced.

The application relates to the cable technical field and discloses a 35kV aging-resistant power cable which comprises, from inside to outside, a conductor, a conductor shielding layer, an insulation layer and a sheath layer; the raw material of the sheath layer comprises the following components in parts by weight: 100 parts of chlorinated polyethylene, 15-20 parts of chlorosulfonated polyethylene material, 7-12 parts of ethylene-vinyl acetate copolymer, 10-15 parts of ethylene-propylene-diene rubber, 10-15 parts of filler, 0.2-0.4 parts of vulcanizing agent, 2-3 parts of activator and 5-8 parts of compatibilizer; the raw material of the chlorosulfonated polyethylene material comprises the following components in parts by weight: 60 parts of chlorosulfonated polyethylene, 5-10 parts of zeolite, 5-10 parts of illite and 0.5-2.5 parts of rare earth stearate. Through the technical scheme, the problem that the aging resistance of the sheath layer of the power cable needs to be improved in the related art is solved.

The invention relates to the field of edge banding strips and discloses an adhesive edge banding strip for furniture and a preparation method thereof. The edge banding strip comprises an edge banding strip substrate layer and a hot melt adhesive layer, wherein the edge banding strip substrate layer comprises: polyvinyl chloride, modified nano-calcium carbonate, hollow antibacterial microspheres, chlorinated polyethylene, and an additive; the modified nano-calcium carbonate is grafted onto the surface of the nano-calcium carbonate by using a functionalized coupling agent and then reacted with 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride to form the strip; the functionalized coupling agent is reacted by N-(4-aminophenyl)maleimide with 3-mercaptopropyltriethoxysilane; the hollow antibacterial microspheres are prepared by using an antibacterial monomer prepared by reacting 5-hydroxymethylthiazole and isocyanoethyl methacrylate, sodium p-styrene sulfonate, N,N-methylenebisacrylamide, n-hexane, and cetyltrimethylammonium bromide through emulsion interfacial polymerization and quaternization reaction. The edge banding strip prepared by the invention has excellent tensile strength, aging resistance, heat resistance, heat insulation effect, and antibacterial performance.

The application relates to the cable field and particularly discloses a mine rubber-sheathed cable insulation shielding material and a preparation method thereof. The insulation shielding material comprises the following raw materials in parts by weight: chlorinated polyethylene 100 parts; conductive carbon black 37-40 parts; graphene 1-2 parts; flake graphite powder 3-6 parts; plasticizer 25-30 parts; light magnesium oxide 6-10 parts; calcium stearate 1-2 parts; antioxidant 1-2 parts; calcium hydroxide 3-5 parts; vulcanization cross-linking system 7-9 parts; polyethylene wax 1-2 parts; peeling regulation component, which comprises 3-4 parts of polytetrafluoroethylene superfine powder, 2.5-3.5 parts of shellac and 1.5-2.5 parts of fluorosilicone oil. The preparation method comprises the following steps: raw material pretreatment; and sectional temperature control mixing. The insulation shielding material has the advantages of excellent processing technology, conductive performance and stable controllable peelable interface between the insulation shielding material and the ethylene-propylene insulation layer.

The application discloses a high-temperature-resistant polyvinyl chloride adhesive tape and a preparation method thereof, and belongs to the technical field of polymer materials and adhesive products. The high-temperature-resistant polyvinyl chloride adhesive tape comprises the following raw materials in parts by weight: synergistically modified polyvinyl chloride, diphenyl phosphine oxide, chlorinated polyethylene, diisononyl phthalate, antimony trioxide, calcium stearate, zinc stearate, an antioxidant and a leveling agent; the synergistically modified polyvinyl chloride is obtained by introducing catechol structures on the surface of polyvinyl chloride through dopamine self-polymerization deposition, forming a dynamic borate ester structure with 3-aminobenzoic acid, and constructing a Si-O-Si network structure through hydrolytic condensation reaction of octa(3-aminopropyl)silsesquioxane and N-(beta-aminoethyl)-gamma-aminopropyl triethoxysilane. The dopamine-borate ester-silicone synergistic network structure is constructed, and the diphenyl phosphine oxide is introduced for function regulation, so that the heat resistance, mechanical properties and dimensional stability of the polyvinyl chloride adhesive tape are significantly improved.

This invention discloses a method for preparing low-temperature resistant chlorinated polyethylene, belonging to the technical field of chlorinated polyethylene preparation. The preparation method includes the following steps: raw material preparation, chlorination reaction, and post-treatment. In the chlorination reaction, deionized water, high-density polyethylene powder, a swelling agent, and a first dispersant are added to a reaction vessel for swelling. Alkaline earth metal oxides are added, and the mixture is stirred at room temperature. A second dispersant, emulsifier, and initiator are added, and the mixture is stirred again. An anti-adhesion agent is added, the reaction vessel is sealed, and the temperature is raised to 75-80°C. A vacuum is drawn to a pressure of -0.04 MPa to -0.03 MPa, and a first chlorine gas is introduced. The temperature is raised to 110-115°C, and a second chlorine gas is introduced. The temperature is raised to 134-136°C, and a third chlorine gas is introduced. The chlorine gas introduction is stopped, and the mixture is cooled to room temperature. The chlorinated polyethylene prepared by this invention exhibits good low-temperature resistance, low colored particle number and ash content, high tensile strength, and low Shore hardness.