Process properties of Jiangmen engineering plastics and its influence on molding process
engineering plasticThe process properties of the are:
Water absorption - drying process (temperature, time, whether vacuum pumping is required).
MFI - fluidity - set the material temperature, injection molding and injection pressure in the injection molding process.
Melting point / viscous flow temperature - set the material / barrel temperature.
Softening point - set the mold temperature or the temperature of secondary molding (such as hot forming (vacuum forming)).
How does the process performance of engineering plastic affect the forming process
Thermoplastic: this kind of plastic is characterized by softening with the increase of temperature, being molded, and becoming hard after cooling. This process can be repeated many times. Its typical varieties are PVC, polyethylene, polypropylene, polystyrene, ABS, nylon, polycarbonate, plexiglass, etc.
Thermosetting plastics: this kind of plastics can be cured after heating for a certain time or adding curing agent at a certain temperature. The cured plastic is hard and cannot be dissolved in solvent, nor can it be softened by heating. If the temperature is too high, it will decompose. Its typical varieties are phenolic resin, epoxy resin, unsaturated polyester, etc.
This article is from Jiangmen engineering plastic:http://www.hhaifeng88.cn/
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