Thermosetting plastic and Thermal plastic
According to the different physical and chemical properties of various plastic, plastic can be divided into two types of thermosetting plastic and thermal plastic .
The thermosetting plastic refer to a plastic which cab be solidified or insoluble on high temperature or other conditions, such as phenolic, epoxy plastics, etc.. Thermosetting plastics and formaldehyde cross-linking points and the other twotypes of cross-linking. Formaldehyde cross-linking is including phenolic plastic, amino plastic (such as melamine etc.).
Other cross-linking plastic is including unsaturated polyester, epoxy resin, phthalic diene propyl ester resin etc.
Thermal plastic is the plastic which can be repeated heating and cooling to soften hardened plastic in a specific temperature range, such as polyethylene, teflon etc.. Thermal plastic is divided into hydrocarbons, containing polar vinyl, gene engineering, cellulose and other types.
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