10results about How to "Promote plasticization" patented technology

According to the PETG environment-friendly floor, the traditional PVC material is replaced with polyethylene terephthalate-1, 4-cyclohexanedimethanol, potential risks to human health and the environment are reduced, through the design of a multi-layer structure, the abrasion resistance, the decoration performance and the structural stability of the floor can be enhanced, and the service life of the floor is prolonged. The invention also provides a preparation method of the PETG environment-friendly floor. Through cooperation of the high-speed stirrer and the low-speed stirrer, preliminary mixing and plasticizing of raw materials are promoted, meanwhile, the raw materials are prevented from being over-plasticized, uniform mixing of the raw materials is ensured, the roller press is adopted, the wear-resistant layer and the decorative film layer are pre-attached while shading is pressed on the base material layer, then rapid forming and attaching and surface pattern decoration of the wear-resistant layer, the decorative film layer and the base material layer are achieved, and the production efficiency is improved.

The utility model relates to a double-layer double spreader and multi-layer spreader extrusion die head structure, which comprises an outer layer feeding section, a spreader and a charging barrel, the bottom of the outer layer feeding section is provided with the spreader, the outer side of the spreader is sleeved with the charging barrel, the spreader comprises an inner layer flow rubber core, the outer side of the inner layer flow rubber core is sleeved with an outer layer core sleeve, and the outer layer core sleeve is sleeved with an outer layer core sleeve. The outer side of the outer-layer core sleeve is sleeved with a sleeve, the sleeve is located between the outer-layer feeding section and the charging barrel, and a sprue spreader is installed at the top end of the inner-layer rubber flow core and located in the outer-layer feeding section; the outer-layer spreader type structure is suitable for a double-layer or multi-layer structure and has the advantages that no convergence line exists after two layers or multiple layers are converged, the problem that the bottle body has the convergence line is solved, the color changing time is short, and the efficiency is high.

The invention discloses an antibacterial easily-degradable plastic bottle cap and a preparation method thereof, and belongs to the field of plastic degradation. The antibacterial easy-to-degrade plastic bottle cap is mainly prepared from polylactic acid (PLA), and the antibacterial easy-to-degrade plastic bottle cap is mainly prepared from the following components in parts by weight: 50 to 60 parts of polylactic acid, 20 to 30 parts of polyhydroxyalkanoate, 10 to 15 parts of argil, 0.5 to 3 parts of quaternary ammonium salt, 0.1 to 0.5 part of antioxidant, 2 to 5 parts of stabilizer, 5 to 8 parts of plasticizer, 0.5 to 1.5 parts of lubricant and 2 to 5 parts of coloring agent. A large number of ester bonds-COOR exist on a main chain of polylactic acid, and the ester bonds-COOR are chemical bonds most likely to break in organic matter, so that polylactic acid is easy to degrade, polylactic acid can be degraded within 8-25 weeks under the composting condition and can be completely degraded within 3-5 years under the natural condition, the degradation time of traditional plastic is more than one hundred years, and polyhydroxyalkanoate is adopted as an auxiliary material, so that the cost is reduced, and the environment is protected. The polyhydroxyalkanoate is an intracellular polyester synthesized by many bacteria, and after the polyhydroxyalkanoate is fused with the polylactic acid, the biodegradability is further improved.

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 invention discloses a cable sheathing anti-blocking extruder for cable processing, and relates to the technical field of plastic processing, the cable sheathing anti-blocking extruder comprises a fixed cylinder, the fixed cylinder is a cylinder with a large middle part and two small ends, the inner wall of the fixed cylinder is provided with a rotating shaft, the rotating shaft is connected with a motor through a transmission part, the outer side of the rotating shaft is fixedly connected with a spiral plate, and the spiral plate is fixedly connected with a screw. The outer wall of the spiral plate is matched with the inner wall of the fixing cylinder, a limiting cylinder is fixedly connected to the middle of the rotating shaft, a cavity of the limiting cylinder is conical, a sleeve is fixedly connected to the outer side of the rotating shaft, a round rod is slidably connected to the outer side of the sleeve, and a heating plate is fixedly connected to the end, away from the sleeve, of the round rod. According to the cable sheathing anti-blocking extruder for cable processing, the limiting cylinder is arranged, and the conical melting cavity is used for increasing the movement stroke of materials, so that under the condition that the length of an existing device is not changed, the heating duration of the materials is prolonged, and the working efficiency of the device 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.

A small medical polyurethane production device comprises a body, the body comprises a main motor, a first screw assembly controlled by the main motor to rotate and a feeding machine for injecting raw materials into the first screw assembly, and the first screw assembly comprises a first screw machine barrel and two first screws arranged in the first screw machine barrel and meshed with each other; the first screw comprises a feeding section, a first solid conveying section, a first melting and plasticizing section, a first melt conveying section, a first mixing section, a first vacuum exhaust section and a first discharging section which are sequentially connected and integrally formed. According to the small medical polyurethane production device, the structural design is reasonable, the plasticizing and uniform mixing effects of materials are optimized, the first screw assembly is composed of the two first screws which are meshed with each other, and due to the arrangement of the double screws, the preparation of polyurethane is lengthened, and the production efficiency is improved. The chemical components are mixed more uniformly, and the chemical reaction is more sufficient.

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.

The invention provides an application of a twin-screw extrusion pelletizing process in improving the stable operation of a twin-screw extruder in the preparation process of copolymerized polycarbonate. The invention also provides a double-screw extrusion pelletizing process of copolymerized polycarbonate, and stable operation of the double-screw extruder is realized by adjusting and controlling operation parameters, an extrusion formula and a screw combination of copolymerized PC semi-finished product flocculus in the double-screw extruder and coordinating and matching the operation parameters, the extrusion formula and the screw combination of the copolymerized PC semi-finished product flocculus in the double-screw extruder. By adopting the twin-screw extrusion pelletizing process provided by the invention, a copolymerized siloxane polycarbonate semi-finished product flocculus is well plasticized in a machine barrel, the material throwing phenomenon at a vacuum sight glass opening of an extruder is eliminated, and high vacuum degree and negative pressure are maintained, so that the content of water vapor and small molecules is reduced, bubbles in a material strip are eliminated, and the material strip collapse phenomenon at a die head is eliminated; similarly, the problem of frequent collapse of die head material strips in the extrusion granulation process of brominated PC is also eliminated.