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PC Description:
Generally speaking, polycarbonate vinegar has no effect on grease,oil and acid. It is also stable in pure gasoline. PC polycarbonatehas high transmittance, about 87%-90%, and its refractive index is1.587, which is higher than other transparent polymers such asacrylate, so it can be used as lens optical material. Polycarbonatealso has good weatherability and heat aging resistance. After twoyears of exposure outdoors, the properties of polycarbonate remainbasically unchanged. Polycarbonate can be formed by injection,extrusion, blow molding, vacuum forming, thermoforming and othermethods, often using injection, extrusion and blow molding. Themelt viscosity of polycarbonate is higher than that of generalthermoplastic plastics. The viscosity of polycarbonate is 104-105Paat processing temperature, and it is sensitive to temperature. Theviscosity decreases obviously with the increase of temperature. Theflow characteristics of polycarbonate have little relationship withshear rate, which is similar to Newtonian fluid. Therefore, ingeneral, the flowability of polycarbonate is improved by adjustingtemperature.
优越性能：
聚碳酸酯用于良好的力学性能，抗蠕变性能也很好，要优于聚酞胺和聚甲醛，特别是用玻璃纤维增强改性的PC聚碳酸醋的耐蠕变性更优异，故在较高温度下能承受较高的载荷并能保证尺寸的稳定性。聚碳酸酯力学性能方面的主要缺点是易产生应力开裂、耐疲劳性差、缺口敏感性高、不耐磨损等。PC具有很好的耐高低温性能，120℃下具有良好的耐热性，热变形温度达130～140℃。又具有良好的耐寒性，脆性温度为-100 ℃ ，长期使用温度为-70～120℃。它的热导率及比热容都不高，线胀系数也较小，阻燃性也好，并具有自熄性。PC作为一种弱极性聚合物，电绝缘性不如聚烯烃类，但仍然具有较好的电绝缘性。由于其玻璃化转变温度高、吸湿性小，可在很宽的温度和潮湿的条件下保持良好的电性能.