44results about How to "Reduce balance torque" patented technology

The invention discloses a polyolefin wood-plastic composite material. The polyolefin wood-plastic composite material is prepared by blending and extruding the following components in parts by weight: 20 to 80 parts of polyolefin resin, 20 to 80 parts of plant fiber powder, 2 to 8 parts of compatilizer, 1 to 8 parts of lubricant, and 0.1 to 1 part of antioxygen, wherein the lubricant includes pentaerythritol tetra-benzoate. The composite material has the balance torque of 3.2 to 8.4N.M, bending strength of 30.1 to 66.3MPa, and bending modulus of (0.80-22.6)*10<4>MPa. The invention also discloses a preparation method of the polyolefin wood-plastic composite material. The ester bond of the pentaerythritol tetra-benzoate contained in the wood-plastic composite material and the hydroxyl of the plant fibers can produce high hydrogen bond effect, so that the plant fibers can be promoted to be uniformly dispersed, the filling amount can be increased, the product cost is reduced, the defect on the appearance of the product is avoided, the melting and extruding efficiency is improved, and the bending performance and water absorbing performance of the material are improved; and the polyolefin wood-plastic composite material can be used as the high-level polyolefin wood-plastic composite material to be widely applied in the fields such as indoor and outdoor decoration and construction industry.

This invention discloses a sulfur-containing metal carboxylate composite stabilizer and its application. The sulfur-containing metal carboxylate composite stabilizer comprises: sulfur-containing metal carboxylate, metal salt stabilizer, organic metal stabilizer, lubricant, and organic auxiliary stabilizer. The sulfur-containing metal carboxylate composite stabilizer can be used in halogen-containing polymers to increase their processing stability. The sulfur-containing metal carboxylate composite stabilizer has such advantages as long thermal stabilization period, low early coloration, and low toxicity.

The invention belongs to the field of a heat stabilizer for PVC (polyvinyl chloride) and relates to an environmental-friendly high-efficiency composite heat stabilizer for tribasic zinc PVC (polyvinyl chloride) and a preparation method of the environmental-friendly high-efficiency composite heat stabilizer. The environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) is prepared by performing a reaction of tribasic zinc, calcium stearate, a lubricant and an auxiliary heat stabilizer, wherein the tribasic zinc is prepared by mixing pentaerythritol and zinc oxide according to a weight ratio of 6-8:3 and performing a reaction for 4 to 6 hours at a temperature of 140 to 180 DEG C. The preparation method comprises the following steps of: adding the tribasic zinc and the calcium stearate into a reaction kettle for sufficiently mixing; adding the mixed materials into a kneading machine to knead for 15 to 25 minutes at a temperature of 100 to 120 DEG C; adding a lubricating agent and the auxiliary heat stabilizer in the kneading machine to knead and stir for 25-35min; and carrying out discharging, tabletting, sieving and packaging to obtain the finished product. The prepared environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) has the characteristics that the environmental-friendly high-efficiency composite heat stabilizer is difficult to separate out and has good stabilizing effect; the balancing torque can be reduced; and the processing property is improved. Moreover, the environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) has the advantages of high efficiency and environment protection.

The invention relates to a calcium-zinc stearate and adipic acid di-maltitol ester PVC stabilizer and a manufacturing method thereof, which belong to the field of heat stabilizers for polyvinyl chloride (PVC) processing. Through adding adipic acid di-maltitol ester to carry out compounding with zinc stearate, calcium stearate, beta-diketone, a lubricant and an auxiliary heat stabilizer, a high-performance calcium-zinc stearate and adipic acid di-maltitol ester PVC composite heat stabilizer is obtained. A novel heat stabilizer prepared by using the method disclosed by the invention has the characteristics of ideal initial color, good long-term heat stabilization effect, and capability of promoting the plasticizing, lowering the balance torque, and improving the processing performance. The heat stabilizer prepared by using the method disclosed by the invention has the advantages of high efficiency and environment friendliness.

The invention relates to an environmental protection PVC section bar organic tin stabilizing agent. The environmental protection PVC section bar organic tin stabilizing agent comprises 69 to 75 partsof organic tin, 19 to 25 parts of organic zinc, 12 to 16 parts of an antimony based stabilizing agent, 21 to 25 parts of epoxy resin, 9 to 14 parts of modified magnesium aluminum hydrotalcite, 9 to 12parts of stearic acid, 5 to 11 parts of calcium stearate, 4 to 8 parts of nanometer zinc oxide, 5 to 9 parts of nanometer titanium dioxide, 15 to 21 parts of light calcium carbonate, 9 to 15 parts ofparaffin oil, and 15 to 25 parts of a phosphite ester. The environmental protection PVC section bar organic tin stabilizing agent is prepared from novel environment-friendly materials at a scientificand reasonable ratio, conventional environment protection safe raw materials are adopted, so that excellent heat stability and processing performance are achieved; the environmental protection PVC section bar organic tin stabilizing agent possesses excellent heat stability and processing performance, is nontoxic, is friendly to the environment, is low in cost; in PVC processing process, the plasticizing performance is excellent, balance torque is reduced; the light transparency is excellent; cost is low; heat stability is increased; and section bar welding strength is high.

The invention provides a high-toughness flame-retardant cable for an electric power circuit and a preparation process of the cable. The high-toughness flame-retardant cable is prepared from raw materials of a hydrogenated polystyrene-butadiene block copolymer, polypropylene, maleic anhydride, an MCA (melamine cyanurate) flame retardant, aluminum diethyl phosphinate, montmorillonite, silicone powder, dicumyl peroxide, an antioxidant and the like. The hydrogenated polystyrene-butadiene block copolymer has good mechanical property, weather resistance, heat resistance and compressive deformation resistance, and the dielectric strength reaches 39MV/m; the polypropylene has the characteristics of high strength, large hardness, wear resistance and the like, and has relatively high dielectric coefficient and breakdown voltage; the elastic strength of the composite material obtained by modifying a composite material through the montmorillonite, the silicone powder and the maleic anhydride is increased, the thermal stability is improved, the tensile strength of the composite material is increased to 12.75Mpa, the elongation at break reaches 932.5%, the water resistance is slightly reduced, and the balance torque during melting is reduced; with the addition of the antioxidant, the flame retardancy and thermal stability of the composite material are improved obviously, and the flame resistance of the composite material is increased to 32.

The invention belongs to the technical field of high polymer materials, and specifically relates to a high-strength PVC tubular product composition. Through the technical scheme, the high-strength PVC tubular product composition is prepared from the following components (in parts by weight): 100 parts of PVC, 2 to 4 parts of a processing modifier, 1.0 to 2.5 parts of a heat stabilizer, 8 to 11 parts of a flexibilizer, 1.5 to 3.5 parts of a lubricating agent, 0 to 5 parts of a filler, 0.05 to 0.1 part of an antioxygen 1076 and 0 to 2 parts of a coloring agent. A rigid polyvinyl chloride tubular product produced by using the composition disclosed by the invention has high tenacity and relatively high strength, and is high in impact performance and relatively high in physical and mechanical properties.

The invention discloses a preparation method of an HDPE polymer film with high strength and high impact resistance. The preparation method comprises the steps of material preparation, blending pelleting, CaCO3 adding, drying, preheating, pressure maintaining and cooling. Toughening modification is carried out on HDPE by using a polyolefin elastomer (POE), and simultaneously, a melt blending methodis adopted, an HDPE waterproof roll is prepared by filling an HDPE/POE blending system with an inorganic filler CaCO3, and the prepared HDPE film has the advantages of excellent physical index and high impact resistance; the tenacity of HDPE can be improved greatly through the addition of POE, the tensile strength is reduced, the elongation at break is increased, the hardness is reduced, and theimpact resistance is increased; the balance torque of HDPE can be reduced through the addition of CaCO3 and POE, the processing fluidity becomes higher, and the impact resistance is high; and moreover, the preparation method disclosed by the invention is simpler and low in equipment requirements, and has a preferable popularization effect.