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  • 你知道如何增加塑料托盘的耐热性能吗?
  • 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:
正值炎热的夏天,烈日的暴晒很容易影响塑料托盘的使用寿命,那么如何增加塑料托盘的耐热性呢? 热塑性塑料分子结构都是线型结构,在受热时发生软化或熔化,可塑制成一定的形状,冷却后又变硬。在受热到一定程度又重新软化,冷却后又变硬,这种过程能够反复进行多次。如聚氯乙烯、聚乙烯、聚苯乙烯等。热塑性塑料成型过程比较简单,能够连续化生产,并且具有相当高的机械强度,因此发展很快。 热固性塑料的分子结构是体型结构,在受热时也发生软化,可以塑制成一定的形状,但受热到一定的程度或加入少量固化剂后,就硬化定型,再加热也不会变软和改变形状了。热固性塑料加工成型后,受热不再软化,因此不能回收再用,如酚醛塑料、氨基塑料、环氧树脂等都属于此类塑料。热固性塑料成型工艺过程比较复杂,所以连续化生产有一定的困难,但其耐热性好、不容易变形,而且价格比较低廉。 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.