5results about How to "Uniform plasticization" patented technology

The invention relates to the technical field of high polymer materials, in particular to a preparation method of a chlorinated polyvinyl chloride modified material, which is prepared by chlorination of polyvinyl chloride by a chemical grafting method, block of 2-ethylhexyl acrylate and grafting of dodecenyl succinic anhydride. Net-shaped cross-linked block chlorinated polyvinyl chloride prepared by cross-linking acrylonitrile fibers and poly-alpha-methyl styrene through a physical blending method is used, and long-chain fatty acid ester containing active proton pellet groups is grafted on chlorinated paraffin to serve as a main stabilizer. The molecular structure of the obtained chlorinated polyvinyl chloride modified material is more excellent, and the strength, the thermal stability and the heat resistance of the chlorinated polyvinyl chloride modified material are greatly improved; the impact-resistant chlorinated polyvinyl chloride improves the self-defect of poor impact resistance of chlorinated polyvinyl chloride, obviously improves the plasticity, widens the application range, and is especially suitable for preparation of heat-resistant and impact-resistant high polymer material products.

The invention relates to rubber processing equipment, in particular to a screw structure of a rubber cold feed extruder. Comprising a feeding section, a plasticizing section connected with the feeding section and an extruding section connected with the plasticizing section, the plasticizing section comprises a plurality of shearing sections and mixing sections, the number of the mixing sections is the same as that of the shearing sections, and the shearing sections and the mixing sections are alternately distributed; two main screw flights are arranged on the mixing section, the two main screw flights are spirally arranged along the peripheral side of the mixing section, starting points of the two main screw flights are different, but screw pitches of the two main screw flights are the same, and a main screw groove is formed between the two main screw flights; the width of the widest part of the main screw flight is 1.3-2 times of the width of the screw flight of the shearing section, the depth of the main screw flight is 55-65% of the depth of the screw flight of the shearing section, and the helical angle of the main screw flight is the same as that of the screw flight of the shearing section. According to the invention, through continuous shunting-shearing-converging, the rubber material is fast in heat generation and more uniform in the plasticizing process, the quality of the rubber material is improved, and the energy consumption is low.

The utility model discloses an injection molding machine material cylinder subassembly, include: fixed cylinder, the top of fixed cylinder is installed with fixed plate, the bottom fixed connection of fixed cylinder has the taper groove, the left side upper end of fixed cylinder inserts and is established with the feed pipe, the bottom fixed connection of taper groove has the connecting pipe, the bottom fixed connection of connecting pipe has the connecting disc, even feeding mechanism, the middle installation of fixed plate has even feeding mechanism, the bottom fixed connection of even feeding mechanism has the connecting rod, the inner chamber middle installation of fixed cylinder has the mounting panel, through even feeding mechanism, it is convenient to make plastic granule even through the leakage hole on the mounting panel and carry out the discharge use of material, and the rotation of rotating shaft is in rotation simultaneously, drives the spiral blade on connecting rod and rotates, makes the plastic granule that even enters the connecting pipe even delivery into injection molding machine, ensures that plastic granule plasticizes evenly, avoids causing feed blockage, has improved the stability of this device use.

The invention relates to the field of auxiliary chemicals, in particular to the field of C08L2201 / 08, and particularly relates to an environment-friendly stabilizer for PVC (polyvinyl chloride) and a preparation method of the environment-friendly stabilizer. The environment-friendly stabilizer for PVC is prepared from the following raw materials: stearate, a lubricant, hydrotalcite, an antioxidant, a coupling agent, an auxiliary stabilizer and a filler. Wherein the hydrotalcite comprises CZ-380 and CZ-390, and the lubricant comprises oxidized wax and Fischer-Tropsch wax. The prepared environment-friendly stabilizer for PVC can significantly improve the weather resistance, temperature resistance and glossiness of a PVC product, and the actual use effect is excellent.

The present invention belongs to the technical field of special materials for PE pipes, and specifically relates to an ultra-large-caliber PE pipe material and its preparation method and application. The present invention first provides a modified whisker carbon nanotube masterbatch, wherein the whisker carbon nanotube is grafted with a phase change microsphere having a phenolic resin as a shell and n-hexadecane as a phase change core material, and the masterbatch is mixed with PE resin and kneaded to form a masterbatch, and then further made into an ultra-large-caliber PE pipe material with PE resin and carbon black masterbatch. The obtained ultra-large-caliber PE pipe material has good tensile fracture rate and anti-aging performance, and other properties also meet the relevant standard requirements of PE pipes.