- 本站编辑：杭州宏展塑料有限公司发布日期：2019-09-18 18:37 浏览次数：
Be worth hot summer, the insolation of burning sun affects the service life of plastic tray very easily, so how to increase the heat resistance of plastic tray?
Thermoplastics are linear structures that soften or melt when heated and can be molded into a shape that hardens when cooled. It is softened when heated to a certain extent and hardened when cooled, a process that can be repeated many times. Such as polyvinyl chloride, polyethylene, polystyrene and so on. Thermoplastic molding process is relatively simple, can be continuous production, and has a relatively high mechanical strength, so the development of rapid.
The molecular structure of thermosetting plastics is the body structure, which is also softened when heated and can be molded into a certain shape. However, when heated to a certain degree or a small amount of curing agent is added, it will harden and shape, and will not become soft or change shape after reheating. Thermosetting plastics, such as phenolic plastics, amino plastics, epoxy resin, etc., belong to this kind of plastics. Thermosetting plastic molding process is more complex, so continuous production has certain difficulties, but its good heat resistance, not easy to deformation, and the price is relatively low.