640 results about "Zinc stearate" patented technology

The invention discloses a high-strength polyethylene film and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a high-strength polyethylene film. The high-density polyethylene composite material is prepared from the following raw materials in parts by weight: 35 to 45 parts of high-density polyethylene, 25 to 35 parts of linear low-density polyethylene, 12 to 18 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of nano silicon dioxide, 3 to 7 parts of organic montmorillonite, 1.5 to 3.5 parts of hindered amine light stabilizer, 1.5 to 2.5 parts of antioxidant 1010, 0.8 to 1.2 parts of calcium stearate, 0.8 to 1.2 parts of zinc stearate, 0.8 to 1.2 parts of silane coupling agent and 4 to 6 parts of maleic anhydride grafted polyethylene. The composite material is prepared from the following components in parts by weight: 1.5-3.5 parts of a quaternized chitosan-nano silver compound, 6-9 parts of a modified toughening agent, 4-7 parts of a modified heat-resistant agent, 1.5-3.5 parts of a processing aid, 0.15-0.35 part of dibenzoyl peroxide and 0.5-1.5 parts of a nucleating agent DBS. The composite material is excellent in comprehensive performance, high in strength, good in flexibility and puncture resistance, excellent in aging resistance, heat resistance, chemical resistance and antibacterial property, good in processability, capable of meeting the requirements of multiple fields such as packaging and agriculture, scientific in preparation method and high in practical value.

The preparation method comprises the following steps: firstly, uniformly stirring and mixing synthetic fluorophlogopite, silica, polymethylsilsesquioxane, boron nitride, bismuth oxychloride, zinc stearate, aluminum starch octenylsuccinate, mica, aluminum oxide, hydrolyzed sodium hyaluronate and toner in a stirring homogenizer; then uniformly mixing polydimethylsiloxane, octyldodecanol stearoyloxy stearate, isoamyl laurate, diisostearyl malate, phenoxyethanol and caprylyl glycol, and heating to 45 + / -5 DEG C; pouring the mixture into an oil spraying barrel of a stirring homogenizer, uniformly stirring and mixing while spraying oil, crushing, then carrying out airflow crushing, sieving the material, putting the sieved material into a mold plate, and carrying out compression molding, so as to obtain a pressed powder block; and putting the mixture into a packing material powder box to obtain the make-up fixing and brightening pressed powder. The pressed powder is prepared by adding an airflow crushing process, the particle size of the powder is smaller, the powder is dispersed more uniformly, the powder is pressed into the solid pressed powder, and the phenomenon of powder flying is well reduced while makeup fixing and brightening effects are achieved.

The invention relates to the technical field of rubber materials, in particular to a rubber composite material with self-lubricating and wear-resistant characteristics and a preparation method thereof. The rubber composite material with self-lubricating and wear-resistant characteristics is prepared from the following raw materials in parts by mass: 70 to 75 parts of nitrile rubber, 15 to 18 parts of carbon black, 30 to 35 parts of self-lubricating filler, 2 to 3 parts of plasticizer, 2 to 3 parts of zinc oxide, 2 to 3 parts of zinc stearate, 3 to 5 parts of coupling agent, 4 to 6 parts of self-lubricating additive, 1 to 1.5 parts of anti-aging agent, 1 to 1.5 parts of accelerant and 2 to 4 parts of vulcanizing agent. The prepared rubber composite material with self-lubricating and wear-resistant characteristics has excellent lubricating property, wear-resistant property and mechanical property. The method is suitable for the fields of automobile manufacturing, mechanical manufacturing, aerospace and the like.

The invention discloses a flexible fireproof cable and a preparation method thereof, and belongs to the technical field of cables. The cable comprises a conductor, a mica insulation layer, a copper protection layer, a buffer layer and a cable sheath layer. The buffer layer is made of a polyurethane foaming material; the cable sheath layer is prepared from the following components in parts by weight: 80 to 100 parts of methyl vinyl silicone rubber, 18 to 20 parts of modified carbon black, 5 to 8 parts of titanium dioxide, 1 to 2 parts of platinum catalyst, 3 to 6 parts of hydroxyl silicone oil, 0.5 to 1 part of zinc stearate and 0.8 to 1 part of dicumyl peroxide. The modified carbon black is added into the raw materials of the sheath layer, so that the compatibility, the interface bonding force and the flame retardant property of the carbon black and a silicone rubber matrix are effectively improved, and the mechanical property, the wear resistance and the fireproof property of the cable sheath layer are remarkably enhanced.

The invention relates to the field of foaming materials, in particular to a low-solvent-residue expandable polystyrene material and a preparation method thereof. The expandable polystyrene material with low solvent residue comprises the following raw materials in percentage by weight: 0.35-0.45% of a free radical initiation system, 0.35-0.45% of S, S, S, S, S, S, S, S, S, S, S, S, S, S, S According to the present invention, the material comprises, by weight, 0.1-0.15% of S, S '-bis (alpha, alpha'-dimethyl-alpha ''-acetoxy) trithiocarbonate, 0.15-0.2% of ascorbic acid, 0.1-0.2% of a nucleating agent, 0.2-0.3% of a suspending agent, 0.001-0.003% of an emulsifier, 5-6% of a foaming agent, 0.15-0.25% of a plasticizer, 0.001-0.002% of hydroxyethyl cellulose, 0.05% of sodium phosphate, 0.1-0.2% of zinc stearate, and 0.1-0.2% of glyceryl stearate, the obtained material has low solvent residue, meets food safety requirements, and is suitable for food packaging.

The invention relates to a photo-thermal aging resistant photovoltaic cable and a preparation method thereof, and belongs to the technical field of high polymer materials. The photo-thermal aging resistant photovoltaic cable is composed of a conductor wire core, and an insulating layer, a filling layer and an outer sheath which are sequentially coated on the outer side of the conductor wire core, the outer sheath is prepared from the following raw materials in parts by weight: 80-120 parts of polyvinyl chloride resin, 3-5 parts of a modified anti-aging agent, 2-8 parts of a modified flame retardant, 1-3 parts of dioctyl phthalate, 10-20 parts of nano silicon dioxide, 1-3 parts of butyl stearate and 3-5 parts of zinc stearate; the photo-thermal aging resistant photovoltaic cable prepared by the invention not only has good ultraviolet ray and thermal aging resistant effects, but also has an excellent flame retardant effect.

The invention provides an ultralight high-resilience cushioning transparent EVA composite chemical foaming material. The ultralight high-resilience cushioning transparent EVA composite chemical foaming material is prepared from the following raw materials in parts by mass: 30-60 parts of high-transparency modified TPX, 30-50 parts of an ethylene-vinyl acetate copolymer, 7-25 parts of a thermoplastic elastomer TPE, 5-16 parts of an olefin block copolymer, 5-10 parts of a wear-resistant agent, 0.2-0.5 part of stearic acid, 0.2-1 part of zinc stearate, 0.3-1.5 parts of an odorless bridging agent and 3.5-8 parts of a transparent foaming agent, the high-transparency modified TPX is prepared from high-transparency TPX, EVOH, ethylene propylene diene monomer and stearic acid. The EVA composite chemical foaming material provided by the invention has the advantages of ultralight weight, low shock absorption, high resilience, high transparency and high energy feedback, keeps the wearing comfort of shoes, protects a consumer from fatigue, pain and even injury caused by the material shock absorption problem in the exercise process, is high in cost performance, and meets the comprehensive requirements of the consumer.

The invention provides a full-biodegradable film and a preparation method thereof. The film comprises the following raw materials: PLA, PBAT, calcium carbonate, an epoxy chain extender and zinc stearate. The preparation method of the film comprises the following steps: (1) modifying calcium carbonate with zinc stearate to obtain active calcium carbonate; (2) mixing activated calcium carbonate and PBAT, melting and granulating to obtain a one-step modified material; (3) carrying out melt blending on an epoxy chain extender and PLA to obtain a second-step modified material; (4) carrying out melt blending on the first-step modified material and the second-step modified material to obtain a PLA / PBAT / calcium carbonate composite material; and (5) adopting the PLA / PBAT / calcium carbonate composite material, and continuously blowing the PLA / PBAT / calcium carbonate composite material into a film through a single-screw extruder to obtain the full-biodegradable film. The thin film meets the use requirements of GB / T38082-2019, GB / T21661-2020 and GBT 35795-2017, and the production cost is low.

The invention discloses a degradable express bag material and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a degradable express bag material. The composite material is prepared from the following raw materials in parts by weight: 40 to 50 parts of poly (butylene adipate-co-terephthalate), 20 to 30 parts of polycaprolactone, 5 to 8 parts of modified bamboo fiber, 2 to 4 parts of modified nano montmorillonite, 3 to 6 parts of tributyl citrate, 0.1 to 0.3 part of antioxidant 1076, 1 to 2 parts of iron dithiocarbamate master batch, 2 to 3 parts of maleic anhydride grafted poly (butylene adipate-co-terephthalate) and 0.3 to 0.6 part of zinc stearate. 0.1 to 0.3 part of baicalein; and 1 to 3 parts of chitosan-sorbitol composite coating liquid. According to the degradable express bag material, poly (butylene adipate-co-terephthalate) and polycaprolactone are used as main degradable raw materials, modified bamboo fibers and modified nano-montmorillonite are matched to enhance the mechanical property, an antioxidant 1076, baicalein and the like are added to guarantee the stability and functionality, temperature is accurately controlled in the preparation process, multi-step modification is adopted for optimizing component combination, and the degradable express bag material is prepared. The performance is improved through the composite coating, degradability is achieved, and good usability is achieved.

The invention discloses an environment-friendly EVA (Ethylene Vinyl Acetate) material and belongs to the technical field of polymer composite materials. The environment-friendly EVA material is prepared from the following components: EVA resin, a bio-based dynamic cross-linking agent DBX-200, a natural fiber reinforced network, a hybrid flame-retardant filler, a bio-based plasticizer, zinc oxide, zinc stearate and an antioxidant. The bio-based dynamic cross-linking agent DBX-200 is introduced to replace a traditional toxic peroxide cross-linking system, pollution-free cross-linking is achieved, and the material is endowed with a self-repairing function. The natural fiber reinforced network is composed of silane coupling agent modified bamboo fibers and carboxylated nanocellulose, a multi-stage reinforced structure is formed, and the mechanical property is remarkably improved. The hybrid flame-retardant filler coats Mg (OH) 2 / HNTs through dopamine, so that synergistic flame retardance of a gas phase and a condensed phase is realized; the bio-based plasticizer is compounded by acetylated tributyl citrate and epoxidized cashew nut oil, and the plasticizing efficiency and the migration resistance are both considered. The material has the characteristics of high mechanical property, excellent flame retardance and environmental friendliness, and is suitable for the fields of shoemaking and the like.

The invention belongs to the technical field of PVC auxiliaries, and particularly relates to a compounding method of a PVC environment-friendly stabilizer, which comprises the following steps: cleaning expanded vermiculite, sequentially depositing titanium dioxide and calcium-zinc ions, then obtaining calcium-zinc stearate modified expanded vermiculite through a spraying reaction of sodium stearate, and finally mixing with an antioxidant, a lubricant, an auxiliary stabilizer and an ultraviolet absorbent to obtain the PVC environment-friendly stabilizer. The PVC environment-friendly stabilizer is obtained. The defects of an existing stabilizer are overcome, the porous structure of expanded vermiculite is used as a frame, zinc stearate and calcium stearate are fixed to the surface in an in-situ fixing mode, and the zinc stearate and calcium stearate composite stabilizer has the advantages of being not prone to precipitation and good in stabilizing effect.

The invention relates to the technical field of electromagnetic shielding materials, in particular to an electromagnetic shielding gap material. The electromagnetic shielding gap material comprises the following raw materials in parts by mass: 100 parts of methyl vinyl silicone rubber, 15-16 parts of graphene nanosheets, 3-5 parts of carbon nanotubes, 4-6 parts of nano Fe3O4, 3-5 parts of a coupling agent, 2-5 parts of hydroxyl silicone oil, 1 part of zinc stearate, 0.5-1 part of peroxide and 10-15 parts of diatomite. According to the invention, conductive fillers such as expensive silver powder and the like are not needed, the electromagnetic shielding effect and the conductivity of the rubber electromagnetic shielding gap material are improved in a mode of compounding the graphene nanosheets, the carbon nanotubes, the nano Fe3O4 and the diatomite, and meanwhile, the mechanical property of the rubber material is prevented from being reduced. The electromagnetic shielding gap material disclosed by the invention has relatively good shielding effectiveness in a high frequency band (1-18GHz waveband), and has important practical application significance.

The invention provides a graphene modified EVA supercritical foaming sole or slipper and a preparation method thereof, and belongs to the technical field of foaming materials. The foaming material is prepared from the following raw materials: an ethylene-vinyl acetate copolymer, modified graphene, stearic acid, zinc stearate and a cross-linking agent. Through the supercritical foaming process, the prepared foamed sole or slipper is higher in strength and lighter in material; the modified graphene, the thermoplastic elastomer and the EVA are compounded, so that the foaming material is endowed with more excellent flexibility and slow rebound resilience, and after the foaming material is made into a sole material, under the condition of long-time use, the sole has good rebound resilience and is softer, and the plantar pressure can be obviously reduced.

The invention relates to the technical field of EVA modified particles, in particular to a preparation technology of EVA modified particles, the EVA modified particles and application of the EVA modified particles, and the EVA modified particles are prepared from, by weight, 35-40 parts of EVA, 10-15 parts of elastomer SEBS, 6-10 parts of titanium dioxide doped additive, 3-5 parts of foaming agent AC, 3-5 parts of cross-linking agent, 4-6 parts of modified zinc oxide agent, 0.3-0.5 part of stearic acid and 0.3-0.5 part of zinc stearate. According to the EVA modified particles, EVA is matched with the elastomer SEBS, meanwhile, the foaming agent AC, the cross-linking agent, the stearic acid and the zinc stearate functional auxiliary agents are added, the added titanium dioxide doped additive and the modified zinc oxide agent serve as blending agents, the EVA modified particles and the blending agents have a synergistic effect, and the prepared EVA modified particles are excellent in skid resistance and elastic performance and good in anti-skid performance. And meanwhile, the product has remarkable bending resistance, wear resistance and stability.

The invention relates to a preparation method of a damp-proof antibacterial medicine packaging composite material with multiple barrier functions, and belongs to the technical field of medicine packaging materials. Enabling the composite complexing nano-silver, polyethylene and zinc stearate to pass through a double-screw extruder to obtain nano-silver antibacterial master batches; adding the nano-silver antibacterial master batch, a mixture of linear polyethylene and an ethylene-vinyl alcohol copolymer, an antioxidant 1010 and silicon dioxide into a single-screw extruder to obtain a damp-proof antibacterial film layer; uniformly coating a polyurethane adhesive on the surface of the damp-proof and antibacterial film layer, compounding an aluminum foil and the film layer coated with the adhesive on a compounding machine, and curing to obtain an aluminum foil-damp-proof and antibacterial film layer; the surface of the aluminum foil-damp-proof antibacterial film layer is coated with a polyurethane adhesive, and then the aluminum foil-damp-proof antibacterial film layer is compounded with a biaxially oriented polypropylene film and cured. The packaging composite material prepared by the invention has excellent moisture resistance, antibacterial ability, barrier property and mechanical property.

The invention relates to the technical field of cables, and provides a corrosion-resistant insulated power cable. The corrosion-resistant insulated power cable is sequentially provided with a conductor layer, an insulating layer and a sheath layer from inside to outside, and the insulating layer is prepared from the following raw materials in parts by weight: low-density polyethylene, magnesium hydroxide and calcium carbonate composite powder, an antioxidant, dicumyl peroxide, zinc stearate and polyethylene wax; the sheath layer comprises the following raw materials in parts by weight: PVC resin, magnesium hydroxide and calcium carbonate composite powder, diisononyl phthalate, a calcium-zinc composite stabilizer, an antioxidant, polyethylene wax and calcium stearate. According to the corrosion-resistant insulated power cable prepared in the invention, the corrosion resistance of the power cable in extreme corrosion environments such as strong acid, strong alkali, high-concentration salt mist and the like is improved, and the condition that a common cable sheath is easy to expand and crack in the extreme corrosion environments is improved.

The application discloses a high-temperature-resistant and high-barrier composite film and a preparation method thereof, and relates to the technical field of layered products, which comprises A, B and C layers in sequence; the A layer comprises a temperature-resistant layer, a substrate layer and a barrier layer in sequence; the B layer comprises a substrate layer, a connecting layer, a barrier layer, an aluminum plating layer and a protective layer in sequence; the C layer is a heat-sealing layer; the preparation raw materials of the temperature-resistant layer material comprise aluminum oxide and titanium nitride; the preparation raw materials of the barrier layer material comprise ethylene-vinyl alcohol copolymer, succinamic acid, furoinic acid and carbon nanotubes; and the preparation raw materials of the heat-sealing layer material comprise titanium carbide, high-density polyethylene, metallocene polyethylene and zinc stearate. The high-temperature-resistant and high-barrier composite film provided by the application has excellent high-temperature resistance and barrier properties.

The invention relates to a preparation method of a high-elastic wear-resistant rubber sole. Comprising the following steps: S1, uniformly mixing 50-60 parts by weight of epoxy resin, 10-20 parts by weight of a polyurethane-acrylate copolymer, 20-30 parts by weight of an elastic complex, 3-5 parts by weight of stearic acid, 1-4 parts by weight of zinc oxide, 3-5 parts by weight of zinc stearate and 2-4 parts by weight of zinc oxide; the preparation method comprises the following steps: uniformly mixing 1-3 parts by weight of magnesium oxide and 1-3 parts by weight of an AC foaming agent in an internal mixer at the temperature of 60-70 DEG C, internally mixing for 30-60 minutes, continuously mixing for 15-20 minutes at the temperature of 90-95 DEG C, granulating after open milling, and standing for 20-24 hours at room temperature to obtain a molding master batch; s2, putting the molding master batch into a foaming mold for compression molding, controlling the mold closing pressure to be 15-25MPa, then heating to 180-190 DEG C together with the foaming mold, performing vulcanization treatment for 8-15 minutes, cooling, and performing standing treatment at room temperature for 20-24 hours to obtain the high-elasticity wear-resistant rubber sole. According to the high-elastic wear-resistant rubber sole, the preparation method and the damping shoe, a good damping effect is achieved, and certain mechanical strength is achieved.

The invention relates to the technical field of conductive materials, in particular to a conductive material based on TPU composite carbon nanotubes and a preparation method and application of the conductive material. Comprising the following raw materials in parts by mass: 70-78 parts of homogeneous TPU; 5 to 8 parts of multi-walled carbon nanotubes; 1 to 3 parts of aminated MXene; 2 to 5 parts of chopped carbon fiber; 0.5 to 2 parts of doped polyaniline; 0.3 to 1 part of zirconium phosphate nanosheets; 1 to 1.5 parts of ionic liquid [VBIM] Br; 1 to 2 parts of hydrophobic nano SiO2; 0.5 to 1 part of a silane coupling agent; 0.3 to 0.5 part of an antioxidant; and 0.5 to 1 part of zinc stearate. According to the preparation method, multi-element fillers such as the multi-walled carbon nanotubes, the aminated MXene, the short carbon fibers and the doped polyaniline are compounded, so that the broadband electromagnetic shielding effectiveness is improved, and the interfacial shear strength is improved.

The invention discloses a moisture-proof durable medium-voltage cable and a preparation method thereof, and belongs to the technical field of cables. Comprising a cable core and an outer sheath layer, and the preparation method of the cable comprises the following steps: mixing modified polyethylene resin and dioctyl phthalate at 85-95 DEG C for 10-15 minutes, then sequentially adding a moisture-proof filler, an antioxidant 1010, zinc stearate, an ultraviolet light absorber UV-326, methyltin mercaptide, stearic acid and paraffin, and internally mixing at 160-170 DEG C for 5-6 minutes to obtain a mixture; and putting the mixture into a twin-screw extruder for extrusion, coating the outer surface of the cable core with the extruded mixture, and performing cooling and shaping to form the outer sheath layer coating the outer surface of the cable core, thereby obtaining the moisture-proof durable medium-voltage cable.

The invention discloses a cold-resistant material, which is prepared from the following raw materials in parts by weight: 20 to 25 parts of EVA (Ethylene Vinyl Acetate) with the VA (Vinyl Acetate) content of 28 percent, 15 to 20 parts of EVA with the VA content of 18 percent or 33 percent, 10 to 15 parts of cold-resistant mixture, 15 to 20 parts of POE (Polyolefin Elastomer), 5 to 6 parts of ethylene propylene diene monomer, 6 to 8 parts of wear-resistant agent, 0.3 to 0.5 part of stearic acid, 0.5 to 0.6 part of zinc stearate, 0.8 to 1.0 part of zinc oxide, 0.35 to 0.40 part of bridging agent and 3.0 to 3.2 parts of high-temperature foaming agent, wherein the cold-resistant mixture comprises 50-60 parts of SEBS, 20-30 parts of aliphatic dibasic acid ester, 10-20 parts of EVA with the VA content being 40% and 10-20 parts of naphthenic oil, the content of styrene in the SEBS is 20%, the content of butadiene is 80%, the raw materials are sequentially subjected to mixing, granulation, secondary mixing and secondary granulation, and the cold-resistant material with the good cold resistance is obtained and can be applied to shoe sole manufacturing.

The invention discloses a flame-retardant antistatic rubber material for a conveying belt and a preparation method of the flame-retardant antistatic rubber material, and relates to the technical field of rubber materials. The rubber material is prepared from the following components: 40-80 parts of chloroprene rubber, 10-40 parts of butadiene rubber, 10-30 parts of high styrene rubber, 20-40 parts of a reinforcing agent, 15-30 parts of an antistatic agent, 10-30 parts of aluminum hydroxide, 10-20 parts of a modified flame retardant, 5-10 parts of polyethylene fibers, 5-10 parts of zinc stearate, 3-6 parts of a coupling agent, 4-8 parts of a vulcanizing agent, 1-3 parts of an accelerant and 1-3 parts of an anti-aging agent. Basic performance is provided through a compounding system of three kinds of rubber, the mechanical performance is improved by adopting an attapulgite-carbon black compounding reinforcing system, and the antistatic and flame-retardant functions are achieved in combination with the antistatic agent and the specially-made modified flame retardant.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The invention relates to the technical field of high polymer material modification, in particular to a top whitening resistant polypropylene composite material as well as a preparation method and application thereof. The top whitening resistant polypropylene composite material is prepared from the following components in parts by weight: 60 to 80 parts of polypropylene resin, 20 to 30 parts of talcum powder, 5 to 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 0.1 to 0.5 part of beta crystal form nucleating agent, 3 to 8 parts of maleic anhydride grafted polypropylene, 0.3 to 1 part of composite antioxidant and 0.5 to 2 parts of zinc stearate. Through the synergistic effect of the hydrogenated styrene-butadiene-styrene block copolymer toughening system and the beta crystal form nucleating agent in a specific formula, high rigidity (the filling amount of talcum powder reaches 20-30 parts) is kept, and meanwhile, the top whitening resistance of the composite material is remarkably improved; the method is suitable for parts such as automobile dashboards and door plates which have strict requirements on surface quality.

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

The invention relates to a fully-synthetic cleaning agent as well as a preparation method and application thereof. The fully-synthetic cleaning agent comprises a chelating agent, a pH regulator, a surfactant, a solubilizer and pure water, the chelating agent comprises a combination of magnesium citrate, tetrasodium glutamate diacetate, tartaric acid, nitrilotriacetic acid and 1-hydroxyethylidene-1, 1-diphosphonic acid. The total synthesis cleaning agent provided by the invention can effectively remove residual cutting fluid on an aluminum alloy workpiece, especially zinc stearate or lubricating grease on a pure aluminum workpiece in a short time, does not corrode an aluminum pipe, is easy to rinse, is beneficial to keeping the original gloss and chromatic aberration of the product workpiece, is good in safety, does not harm human health, and is suitable for industrial production. Sewage treatment is simple, and cost is low.

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

The invention discloses a compound calcium-zinc stabilizer as well as a preparation method and application thereof, and relates to the field of calcium-zinc stabilizers. The calcium-zinc stabilizer comprises calcium stearate, zinc stearate, phosphite ester, an epoxy compound, lanthanum oxide, beta-diketone, a lubricant, an antioxidant and a filler. Uniformly mixing calcium stearate, zinc stearate and lanthanum oxide; adding phosphite ester, an epoxy compound and beta-diketone, and uniformly mixing; and adding the lubricant, the antioxidant and the filler, and uniformly mixing. The calcium-zinc stabilizer is applied to the field of PVC films. By adding calcium / zinc stearate as a main stabilizer and adding lanthanum oxide to be compounded with the main stabilizer, the thermal stability of the PVC film is further improved, and the initial whiteness and light transmittance of the PVC film are obviously improved compared with those of the PVC film in which lanthanum oxide is not added.

The invention relates to the technical field of high-molecular polyethylene, and particularly discloses a PE-based nano high-thermal-conductivity composite material and a pipe preparation process, the PE-based nano high-thermal-conductivity composite material is prepared from the following raw materials: high-density polyethylene, linear low-density polyethylene, an ethylene-octylene copolymer, a modified carbon nanotube, a core-shell oxide, a graphene nanosheet, an interface compatilizer, an antioxidant and a cross-linking agent; the modified carbon nano tube is obtained by depositing a SiO2 layer on the surface of a carbon nano tube and then grafting vinyltriethoxysilane; a core layer of the core-shell oxide is zirconium oxide, a shell layer of the core-shell oxide is aluminum oxide, the surface of the zirconium oxide of the core layer is coated with a zinc stearate hydrophobic layer, and the surface of the aluminum oxide of the shell layer is grafted with methacryloxypropyltrimethoxysilane. According to the invention, through compounding of the modified carbon nanotubes, the core-shell structure zirconium oxide-aluminum oxide and the graphene nanosheets, a three-dimensional heat-conducting network is constructed in a core layer, filler agglomeration is inhibited, and interface thermal resistance is reduced.

The invention discloses a preparation method of a high-temperature-resistant new energy automobile wire harness protective sleeve material. The preparation method comprises the following steps: (1) preparing filler powder; (2) preparing a primary treatment filler; (3) gamma-methacryloyloxy propyl trimethoxy silane and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-methyl propionate 10-oxide are used for treatment, and a modified filling material is obtained; and (4) weighing the vacuum-dried thermoplastic polyester elastomer TPEE, the modified filler, aluminum diethyl hypophosphite, an antioxidant and zinc stearate, adding the raw materials into an internal mixer, mixing for 10 minutes at the mixing temperature of 230 DEG C, extruding and granulating at the temperature of 200 DEG C after mixing is completed, carrying out mold pressing on granules for 5 minutes under the conditions of the temperature of 200 DEG C and the pressure of 10 MPa, and carrying out pressure maintaining and cooling to normal temperature, so as to obtain the wire harness protective sleeve material. The wire harness protective sleeve material prepared by the method has good heat resistance and mechanical strength, and can play a good role in protecting automobile wire harnesses in occasions with high temperature and stress requirements, so that the durability of the automobile wire harnesses is improved, and the maintenance cost is reduced.