33results about How to "Strong internal lubrication" patented technology

The invention relates to a preparation method for a three-layer co-extruded composite high barrier blown film. The method includes: taking polyvinylidene chloride as the basic raw material, adding metallocene linear low density polyethylene, an ethylene-octene block copolymer, tributyl citrate, a rare earth calcium zinc composite stabilizer and butyl stearate, and carrying out a three-layer coextrusion blow molding process so as to obtain the film. The formula of the film surface layer involves: 80-88 parts by weight of metallocene linear low density polyethylene and 12-20 parts by weight of the ethylene-octene block copolymer. The interlayer comprises: 77-85 parts by weight of polyvinylidene chloride, 12-18 parts by weight of tributyl citrate, 2-3 parts by weight of the rare earth calcium zinc composite stabilizer, and 1-2 parts by weight of butyl stearate. The film prepared by the method provided by the invention has excellent oxygen obstruction and aqueous vapor permeation performance, good physical and mechanical properties and sanitation properties, and is suitable for packaging of cooked food, oily food, chilled fresh meat, dairy products, tea and drugs, etc.

The invention discloses a special material of a multilayer co-extrusion film produced by recycled PET bottle flakes and recycled LDPE alloy. The special material of the multilayer co-extrusion film is prepared from the following components: 60-85 part by weight of recycled PET bottle flakes, recycled LDPE reclaim particles, 3-15 part by weight of EVA, 3-10 part by weight of graft POE, 0.1-0.5 part by weight of oxidized PE wax, 0.1-0.2 part by weight of PPA, 0.1-0.3 part by weight of GMS and 0.1-0.3 part by weight of chain extender PMDA. The special material of the multilayer co-extrusion film solves the tearing and rupture phenomena of recycled plastic extrusion films and can partly replace fresh material PET and PE alloy.

A disclosed PVC high-molecular waterproof coiled material is composed of the following raw materials in parts by weight: 10-20 parts of polyvinyl chloride, 5-10 parts of oxidized polyethylene, 5-10 parts of polyethylene, 20-40 parts of heavy calcium carbonate, 5-10 parts of stearic acid, 2-5 parts of a stabilizing agent, 3-7 parts of barium sulfate, 15-30 parts of industrial white oil, 0.5-2 parts of a filler, and 0.1-0.5 part of a defoaming powder. The beneficial effects comprise that the coiled material is prepared by taking PVC material as a main material and matching with multiple auxiliary materials and performing a high temperature reaction. The coiled material is good in flexibility, high in elongation percentage, resistant to corrosion and resistant to acids and alkalis, and is improved in service life.

The invention relates to the technical field of shoe sole anti-slip technology, in particular to a formula of an oil-water type skid-resistant material. The antiskid material is prepared from the following raw materials in parts by weight: N230S (JSR) nitrile butadiene rubber, 7030 (LG) nitrile butadiene rubber, brominated butyl rubber, carbon black, acetyl tributyl citrate, magnesium oxide, 997#zinc oxide, stearic acid, C9 resin and a lubricant. Nitrile butadiene rubber is selected as main rubber, so that on one hand, the oil resistance of the rubber material is improved; on the other hand,brominated butyl rubber is added to interfere in the normal crosslinking of the rubber and improve the hysteresis of the rubber. The surfaces of the carbon black and the brominated butyl rubber have polar groups, so that the antiskid performance of the natural rubber sole can be further improved. The C9 resin is added into the rubber, so that the free volume of a molecular chain in the vulcanizedrubber is reduced, the friction among chain segments, between fillers and between the chain segments and the carbon black is increased, and the lag is enhanced; therefore, the wet skid resistance of the nitrile rubber can be further enhanced.

The invention provides an anti-bite cable protective covering. A shell of the anti-bite cable protective covering is prepared from, by mass, 90-110 parts of polyvinyl chloride resin, 40-60 parts of calcium carbonate, 10-20 parts of o-benzene dioctyl, 11-16 parts of chlorinated paraffin, 2-4 parts of compound stabilizer, 0.4-0.8 part of stearic acid and 3-5 parts of anti-mouse-bite master batch 9074-FT-40. The anti-bite cable protective covering is environmentally friendly and safe in formula, is free of toxin and harms to human bodies and the environment, meets the ecological requirements, and meanwhile well achieves a mouse bite prevention function; the prepared cable protective covering is firm and durable, resistant to aging and higher in flexibility and can better achieve a cable core protecting effect.

The invention relates to an irradiation crosslinked low smoke halogen-free flame-retardant ethylene vinyl acetate elastomer and a preparation method thereof and in particular relates to a raw material used for preparing soft cable sheaths with oil resistance and a preparation method thereof. The irradiation crosslinked low smoke halogen-free flame-retardant ethylene vinyl acetate elastomer is prepared by mixing the raw materials including a base resin A, a base resin B, a modified resin C, aluminium hydroxide, magnesium hydroxide, zinc stearate, a lubricant, an antioxidant, a crosslinking agent and the like in a closed mixer at 130-140 DEG C and then extruding the mixture with a double-screw extruder with six temperature stages. The wires and cables prepared by adopting the elastomer have the characteristics of good softness, halogen-free flame retardance, good heat resistance (110 DEG C under the condition of long-term use), good oil and solvent resistance, good wear resistance, simplicity in processing, lower production costs and the like.

A disclosed PVC high-molecular waterproof coiled material is composed of the following raw materials in parts by weight: 10-20 parts of polyvinyl chloride, 5-10 parts of oxidized polyethylene, 5-10 parts of polyethylene, 20-40 parts of heavy calcium carbonate, 5-10 parts of stearic acid, 2-5 parts of a stabilizing agent, 3-7 parts of barium sulfate, 15-30 parts of industrial white oil, 0.5-2 parts of a filler, and 0.1-0.5 part of a defoaming powder. The beneficial effects comprise that the coiled material is prepared by taking PVC material as a main material and matching with multiple auxiliary materials and performing a high temperature reaction. The coiled material is good in flexibility, high in elongation percentage, resistant to corrosion and resistant to acids and alkalis, and is improved in service life.

The invention discloses a preparation process of a transparent PVC (polyvinyl chloride) cold-bending electrical conduit. The preparation process of the transparent PVC cold-bending electrical conduit comprises the following steps of (1) mixing PVC resin powder, a methyl tin stabilizer, polyethylene wax and stearic acid to obtain a PVC resin mixture; (2) adding the PVC resin mixture into a high-speed mixer, heating, and stirring and mixing for 23 to 27 minutes at a high speed; (3) transferring the PVC resin mixture heated to 143 to 147 DEG C into a low-speed mixer, cooling, and stirring and mixing for 14 to 16 minutes at a low speed; (4) transferring the PVC resin mixture cooled to 43 to 47 DEG C into a double-screw extruder for high-temperature extrusion, mulling and homogenization; (5) transferring the PVC resin mixture extruded from the double-screw extruder into a PVC electrical conduit extrusion die, and extruding to form a die; and (6) carrying out cooling molding on the demolded PVC resin electrical conduit extruded from the PVC electrical conduit extrusion mold under vacuum, then carrying out traction, cutting and packaging processes, and then carrying out inspection and warehousing. According to the preparation process of the transparent PVC cold-bending electrical conduit provided by the invention, the cost is low, the prepared PVC cold-bending electrical conduit can be transparent without adding a brightener and an organic toner into ingredients, and granulation is not needed.

The invention discloses an efficient solid screw cleaning agent and a preparation method thereof. The efficient solid screw cleaning agent is prepared from ABS (acrylonitrile-butadiene-styrene) resin, PMMA (polymethyl methacrylate) resin, calcium carbonate masterbatch, a compatilizer and synthetic wax, wherein the cleaning capacity can be improved by means of the high-viscosity PMMA resin in the cleaning agent, compatibility between the ABS resin and the PMMA resin can be improved by means of the compatilizer, the abnormal phenomena of bar breakage and the like in an extruding granulation process are reduced, stabilization of production is facilitated, and the cleaning agent is discharged out of equipment by a follow-up material more easily during cleaning of the equipment; the capacity of the cleaning agent for cleaning residual substances can be improved by means of the synthetic wax; besides, inorganic powder is replaced with the calcium carbonate masterbatch, so that the phenomenon of powder floating is reduced, the production environment is improved, and harm of powder to the environment and the human body is reduced.

The invention relates to a production method for composite polypropylene wax used for plastic. The composite polypropylene wax comprises polypropylene low polymers, Fischer-tropsch wax or microcrystalline wax and industrial hydrogenated oil, and has the properties that the softening point is 100 DEG C or above, and the average molecular weight ranges from 1500 to 3000. As an excellent dispersing agent, on the aspects of color master production and pigment dispersion, the composite polypropylene wax produced through the method has the advantages that effective molecular weights are concentrated, wherein the molecular weights are narrowly distributed and concentrated, and therefore the dispersion effect and the coloring force are easily improved, and relatively speaking, the addition amount can be decreased under the certain dispersion requirement; the excellent heat resistance and the excellent thermal stability are achieved; the melting point and the viscosity matching are moderate, and the shearing force is facilitated, wherein the softening point is 110 DEG C, the high viscosity is 150 CP / 140 DEG C, produced color master particles have high intermiscibility and mobility and moderate in viscosity, the shearing force is increased, and dispersity is improved.

The invention discloses a composite material for manufacturing a dry powder fire extinguisher spraying pipe, wherein the composite material comprises the following raw materials by mass: 80-100 partsof a mixture of silicone rubber and a CPVC resin, 25-40 parts of a plasticizer, 6-8 parts of a heat stabilizer, 6-10 parts of nitrile butadiene rubber, 12-16 parts of a hot melt adhesive, 2-4 parts ofa cross-linking agent, 7-10 parts of an accelerator, 3-8 parts of oxidized polyethylene wax, 0.3-0.6 part of an internal lubricant, 2-10 parts of flame retardant, 5-15 parts of modified calcium carbonate with an average particle size of less than or equal to 0.01 [mu]m, and 15-20 parts of carbon black, wherein a mass ratio of the silicone rubber to the CPVC resin is 1:4-1:6. The invention furtherprovides a method for manufacturing a dry powder fire extinguisher spraying pipe by using the composite material, wherein the spraying pipe integrates excellent elasticity, flexing resistance, high temperature resistance, aging resistance, flame retardancy and compressive resistance, and has high inner surface smoothness so as to greatly reduce the adhesion rate of dry powder on the inner wall.

The invention provides a rosin sizing agent and a preparation method thereof. The raw material formula includes components in parts by weight: 20-40 parts of cationic rosin glue; 8-12 parts of reinforced rosin glue; 5-15 parts of modified talcum powder 10-20 parts of cyclodextrin; 10-18 parts of cetyltrimethylammonium chloride; 3-6 parts of polyglycerol alkyl ether; 3-5 parts of chitosan; 3-aminopropyl trimethoxy 2-5 parts of base silane. The technical effect of the invention is: the rosin sizing agent prepared by the formula and the preparation process has a high adhesion rate, and has relatively high oil resistance and stability.

The invention relates to a degradable plastic and a preparation method thereof, belonging to the technical field of plastics, comprising the following raw materials in terms of parts by mass: 40-50 parts of modified cellulose, 10-15 parts of polypropylene, polybutylene succinate 8-12 parts of glycol ester, 12-15 parts of polylactic acid, 5-8 parts of plasticizer, 1-3 parts of lubricant, 4-7 parts of filler, 2-5 parts of titanium dioxide, 1-3 parts of iron stearate And 3 to 5 parts of bentonite. The invention modifies the cellulose so that the interfacial compatibility between the modified cellulose and other raw materials is good, so that the prepared degradable plastic has excellent mechanical properties and uniform properties everywhere.

The invention relates to the technical field of solar cells, in particular to a high-reflectivity black solar cell backplane and a preparation method thereof. The solar cell backplane comprises a weather-resistant layer, an adhesive layer and a black reflective layer sequentially arranged from top to bottom. The black reflective layer includes the following raw materials in parts by weight: 20-90 parts of a first polyolefin resin, 15-90 parts of a first adhesive resin, and 10-25 parts of a black functional masterbatch. The backplane of the present invention can have a reflectivity of 25-80% for near-infrared light of 700-1100 nanometers, and can reflect the near-infrared light to crystalline silicon, thereby improving the solar cell backplane's absorption and conversion efficiency of the solar spectrum. In addition, the The preparation method is simple and efficient, the operation and control are convenient, and the quality of the produced product is high, which is favorable for industrialized production, and at the same time, the absorption and conversion efficiency of the prepared solar cell back sheet to the solar spectrum is improved.

The invention relates to the technical field of solar cell back plate, and particularly to a film used for a synergistic type solar cell back plate and a preparation method thereof. The film is 15-150 microns in thickness and comprises the following raw materials in parts by weight: 10-90 parts by weight of polyolefin resin, 10-90 parts by weight of adhesive resin and 5-25 parts by weight of functional master batch; the preparation method of the film comprises the following steps of: mixing a polyolefin resin powder material, an adhesive resin powder material and a functional assistant, and extruding the mixture at 100-250 DEG C by adopting a screw extruder to obtain the functional master batch; mixing the prepared functional master batch with the polyolefin resin and the adhesive resin, and preparing the film at 100-250 DEG C by adopting an extrusion tape casting mode or a blow molding mode. The film disclosed by the invention can absorb ultraviolet lights of 10-400 nm, can convert and utilize optical waves which an existing battery piece cannot convert, can widen a solar spectrum absorption and conversion range, and enables a prepared solar cell component to have high photoelectric conversion efficiency.