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聚碳酸酯(PC)
PC工程塑料是由双羟基化合物中之丙二酚(bisphenol-a)、碳酸盐化合物中之碳酸二苯酯(diphenylcarbonate)由酯交换法(熔融法)反应所聚合而成的聚碳酸酯树脂。是一种性能优良的热塑性工程塑料，具有突出的抗冲击能力，耐蠕变和尺寸稳定性好，耐热、吸水率低、无毒、介电性能优良，是五大工程塑料中唯一具有良好透明性的产品，也是近年来增长速度最快的通用工程塑料。
聚碳酸酯（Polycarbonate）常用缩写PC 是一种无色透明的无定性热塑性材料。其名称来源于其内部的CO3基团。 化学性质 聚碳酸酯耐酸，耐油。 聚碳酸酯不耐紫外光，不耐强碱。 物理性质 聚碳酸酯无色透明，耐热，抗冲击，阻燃，在普通使用温度内都有良好的机械性能。同性能接近聚甲基丙烯酸甲酯相比，聚碳酸酯的耐冲击性能好，折射率高，加工性能好，不需要添加剂就具有UL94 V-0级阻燃性能。但是聚甲基丙烯酸甲酯相对聚碳酸酯价格较低，并可通过本体聚合的方法生产大型的器件。随着聚碳酸酯生产规模的日益扩大，聚碳酸酯同聚甲基丙烯酸甲酯之间的价格差异在日益缩小。 聚碳酸酯的耐磨性差。一些用于易磨损用途的聚碳酸酯器件需要对表面进行特殊处理。 PC生产历史与应用 聚碳酸酯是日常常见的一种材料。由于其无色透明和优异的抗冲击性，日常常见的应用有光碟，眼睛片，水瓶，防弹玻璃，护目镜、银行防子弹之玻璃、车头灯等等、动物笼子宠物笼\子。 聚碳酸酯还被用来制作登月太空人的头盔面罩。笔记本电脑外壳也使用聚碳酸酯制作。 对环境的影响 食物接触 由于它的清晰和韧性 食物贮存货的生产者和采购员 喜欢聚碳酸酯纤维。当与矽土玻璃比较 聚碳酸酯纤维如同轻量级和高度不易碎。聚碳酸酯纤维多用于一次性塑料水瓶和重用塑料水瓶。
Polycarbonate (PC)
The PC engineering plastic is a polycarbonate resin obtained by polymerization of bisphenol-a in a dihydroxy compound and diphenylcarbonate in a carbonate compound by a transesterification (melting) reaction. It is a kind of thermoplastic engineering plastics with excellent performance, outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxicity, and excellent dielectric properties. It is the only transparent plastic among the five engineering plastics. They are also the fastest growing general engineering plastics in recent years.
The commonly used abbreviation for polycarbonate is PC. It is a colorless transparent amorphous thermoplastic material. Its name comes from its internal CO3 group. Chemical Properties of Polycarbonate: acid and oil resistant. Polycarbonate is not resistant to ultraviolet light and is not resistant to alkalis. Physical properties Polycarbonate is colorless, transparent, heat-resistant, impact-resistant, flame-retardant, and has good mechanical properties at normal use temperatures. Compared with polymethyl methacrylate, polycarbonate has better impact resistance, higher refractive index, better processing performance, and UL94 V-0 flame retardant without additives. However, polymethyl methacrylate has a relatively low price relative to polycarbonate and can produce large devices by bulk polymerization. With the ever-increasing scale of polycarbonate production, the price difference between polycarbonate and polymethyl methacrylate is shrinking. Polycarbonate has poor abrasion resistance. Some polycarbonate devices for wear-resilient applications require special treatment of the surface. PC production history and applications Polycarbonate is a common everyday material. Due to its colorless transparency and excellent impact resistance, daily common applications include optical discs, eye lenses, water bottles, bullet-proof glass, goggles, bank-proof bullet glass, headlights, and so on, and animal cage pet cages. Polycarbonate was also used to make helmet masks for the moon’s astronauts. The laptop case is also made of polycarbonate. Impact on the environment Food contact Due to its clarity and resilience Producers and buyers of food storage goods like polycarbonate. When compared to alumina glass polycarbonate is as lightweight and highly brittle. Polycarbonate fibers are used in disposable plastic water bottles and reuse plastic water bottles.