本公司承诺所售原料均为原厂原包假一赔十

东莞永大塑胶原料有限公司
主营产品：

塑胶原料 工程塑胶 聚酰胺 PA66耐磨损 PA66超韧耐寒级 PA66食品级 PA66加玻纤 PA66增韧级 PA66阻燃防火 POM聚甲醛 高粘度POM 坚韧级POM 耐磨损POM 高韧性POM 抗紫外线POM 加玻纤POM 低翘曲POM
工程塑胶：EVA、PC、POM、PA6、PA66、PEEK、COC、PBT、PET PC/ABS、PPS、PPO、LCP；PC
热弹性体：K胶、TPE、TPR、PVC、TPU、TPV、TPX、SBS；
通用塑胶：ABS、PMMA、PP、PE、AS、HDPE、LDPE。
 特种料：   PEI、PTFE、PVDF
本公司所销售之塑胶原料均可提供原厂的物性表，UL MSDS SGS COC 欢迎来电咨询！

备注：公司长期销售塑胶原料/原厂原包，25千克/包，符合ROHS认证标准，25千克起。质量有保证

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聚碳酸酯 (Polycarbonates，PC)

聚碳酸酯（PC）是分子主链中含有碳酸酯结构的工程塑料，于1957年工业化，是一种无定型、无臭、无毒、高度透明的无色或微黄色热塑性工程塑料，具有优良的物理机械性能，尤其是耐冲击性优异。PC分子主链上的苯撑基是大共轭的芳香环，是分子主链上不能弯曲的刚性部分，阻碍分子的内旋转。醚基可增大链的 柔曲性；极性较大的羰基增加了分子间力，使分子链刚性有所加强，而电性能下降。酯基也是极性基，只能加大分子链的刚性，而且是PC极易溶于极性有机溶剂的一个重要原因。几个基团的综合作用，使PC分子链的刚性很大，致使Tg很较高，Tm、粘度也较高。