4results about How to "Promote plasticization" patented technology

The invention relates to a grain fiber-PVC (polyvinyl chloride) composite foamed sheet with a surface co-extrusion layer and a preparation method of the grain fiber-PVC composite foamed sheet. Comprising a middle foaming layer and a surface co-extrusion layer, and the middle foaming layer and the surface co-extrusion layer both comprise PVC resin and rice hull powder. The rare earth composite stabilizer is added, so that the environment-friendly function is achieved, the rare earth stabilizer further has the coupling, reinforcing and brightening functions in the PVC material, and in addition, the rare earth composite stabilizer can further adjust the decomposition temperature of the foaming agent and achieve the effects of toughening and capacity increasing; the foaming agent is prepared by compounding an AC foaming agent and an NC foaming agent, so that the extrusion rate can be increased, meanwhile, the dimensional deviation of the product is reduced, and the surface hardness can reach about Shore D hardness 80; the weight ratio of the rare earth compound stabilizer to the foaming agent to the foaming regulator is (1-5): (0.5-1.6): (3-9). Plasticization in the processing process can be promoted, and meanwhile, the mechanical property of the material is improved.

The utility model relates to the technical field of extruder screws, and discloses a machine barrel screw structure for an extruder, which comprises a first machine barrel, a second machine barrel and a third machine barrel are sequentially arranged on the left side of the first machine barrel, and screws are arranged in the first machine barrel, the second machine barrel and the third machine barrel. By arranging the large-outer-diameter feeding section and the outer-diameter transition section, the extruder can adapt to more types of materials, especially fluffy materials and plastic materials in different shapes, so that the feeding stability and plasticizing uniformity of the materials are improved; the outer diameter of the screw rod is gradually changed, so that materials are compressed and mixed in different sections of the screw rod to different degrees, the plasticizing and mixing effects of the materials are optimized, and the high quality of a final product is ensured; through the segmented design of the machine barrel, the later maintenance convenience is improved, the replacement and cleaning of the screw rod and the machine barrel part are simpler and more convenient, and meanwhile, the maintenance cost is effectively controlled through the segmented structure of the machine barrel.

The invention discloses a polyvinyl chloride insulating material for a new energy automobile battery copper-clad bar and a preparation method of the polyvinyl chloride insulating material. The polyvinyl chloride insulating material comprises the following raw material components in parts by weight: 100 parts of PVC resin, 35-42 parts of a plasticizer, 10-20 parts of a filler, 6-10 parts of a heat stabilizer, 5-10 parts of a flexibilizer and 5-10 parts of a processing aid. The polyvinyl chloride insulation material for the new energy automobile battery pack copper bar prepared by the invention has excellent performance, environmental protection performance, high temperature resistance and low temperature resistance, and the copper bar prepared from the polyvinyl chloride insulation material has excellent electrical property, heat dissipation performance, high and low temperature resistance and no deformation or bulge when being bent, and meets the use requirements of a new energy automobile battery pack.

The invention discloses a starch-based PP floor and a preparation method thereof, and belongs to the technical field of plastic floors. A starch-based PP floor base material layer of the starch-based PP floor is prepared from the following components in parts by weight: 40 to 80 parts of PP resin powder, 100 to 200 parts of modified starch, 10 to 30 parts of starch-based PP floor ground powder reclaimed materials, 2 to 4 parts of CPE (Chlorinated Polyethylene), 2 to 6 parts of butylated hydroxytoluene, 1 to 5 parts of triethylhexyl phosphoric acid and 0.1 to 2 parts of PE (Polyethylene) wax. According to the invention, the starch-based material is selected to fill the PP floor components, so that the use amount of PP resin powder is reduced, the use amount of other small materials is reduced, the cost is reduced, the formula system does not have decomposed halogen and starch-based material, the decomposition speed of floor waste is greatly increased, and the environmental protection property is greatly improved.