Views: 6 Author: Xicheng Ep Ltd Publish Time: 2022-04-23 Origin: Xicheng Ep Ltd
Polypropylene PP plastic sheet is a sheet extruded from polypropylene. It has excellent chemical stability, heat resistance and electrical insulation. It can be used under the conditions of 90--100 °C, acid and alkali corrosion resistance, non-toxic, physical Mechanical function is outstanding. Mainly used for food packaging, chemical containers and water treatment equipment. Chemical and physical properties of polypropylene PP plastic sheet: PP is a semi-crystalline material. It is stronger and has a higher melting point than PE. Because homopolymer PP is very brittle when the temperature is higher than 0 °C, many commercial PP materials are random copolymers with 1~4% ethylene or pincer copolymers with higher ethylene content. The copolymer-type PP material has a lower thermal distortion temperature (100 ° C), low transparency, low gloss, low rigidity, but has a stronger impact strength. The strength of PP increases with increasing ethylene content.
Polypropylene PP plastic sheet
Features of polypropylene sheet extrusion production line: The extruder screw is designed according to the PP-R rheological principle, and has strong plasticizing ability to materials, good dispersibility, and uniform melt temperature. The output ranks among the best in the domestic similar equipment. The screw structure is advanced and the rotation speed is accurate, which can meet the technological requirements of changing the fluidity of PP-R melt. During processing, the residence time of the PP-R melt in the extruder and the die head is suitable to avoid oxidation due to excessive heating time. Optional equipment: The polypropylene sheet production line is compounded with the marking line extrusion equipment. While extruding the polypropylene sheet, the PP color bar is closed to facilitate the identification of the use of the polypropylene sheet or other needs. The screw diameter of the marking line extruder is 30mm, and the screw speed is adjusted by frequency conversion.
Polypropylene PP plastic sheet features: excellent mechanical function, excellent electrical function, strong acid and alkali resistance, good chemical stability, but low softening point. It is suitable for the manufacture of thin plates, wire and cable insulation layers, seals, etc.
1. Amorphous material with low moisture absorption and poor fluidity. In order to improve fluidity and prevent bubbles, the plastic can be pre-dried. The casting system of the mold should be thick and short, the gate section should be large, and there should be no dead corners. The mold must be cooled and the surface is chrome-plated.
2. Because of its corrosive and fluid characteristics, it is best to use special equipment and molds. All products must be added with different types and quantities of additives according to needs.
3. It is very easy to decompose, it is easier to decompose when it touches steel and copper at a temperature of 200 degrees, and it escapes corrosion during differentiation. Irritating gas. The molding temperature range is small.