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发明公开
CN103740083A 一种抗紫外PC/PET合金材料及其制备方法 无效 - 驳回

一种抗紫外PC/PET合金材料及其制备方法
摘要：
本发明公开了一种抗紫外PC/PET合金材料及其制备方法，由以下重量百分比计的原料组成：聚碳酸酯PC：60-85%；PET：6-22%；增韧剂：5-12%；相容剂：2-12%；光吸收剂：0.3-2%；抗氧剂：0.3-1%，其它助剂：0.2-1%。将经过干燥的原料混合均匀后用双螺杆加速器均匀的加入到螺杆直径35mm，长径比L/D＝36的双螺杆挤出机主机筒中，主机筒从加料口至机头出口分九段控制温度为190℃、230℃、255℃、255℃、255℃、255℃、255℃、255℃、240℃，双螺杆转速为300转/分钟，挤出料条经过水槽冷却后切粒得到产品。本发明技术方案制备得到抗紫外PC/PET合金材料，能够兼顾PC和PET的优点，同时在具备优异的抗紫外性之外还具备较好的冲击韧性，这样就拓展了PC/PET作为外饰件的应用空间。本发明制备工艺简单，成本较低。
摘要（英）：

The invention discloses an ultraviolet-resistant PC (polycarbonate)/PET (polyethylene terephthalate) alloy material and a preparation method thereof. The material is prepared from the following raw materials by weight percent: 60-85% of PC, 6-22% of PET, 5-12% of flexibilizer, 2-12% of compatilizer, 0.3-2% of light absorber, 0.3-1% of antioxidant, and 0.2-1% of other additives. According to the preparation method, after being mixed uniformly, the dried raw materials are uniformly added into the main barrel of a twin-screw extruder by a twin-screw accelerator, wherein the diameter of the screw is 35mm, the length diameter ratio L/D is 36, from the feeding port of the main barrel to the outlet of the machine head, nine levels of control temperature are available, namely, 190 DEG C, 230 DEG C, 255 DEG C, 255 DEG C, 255 DEG C, 255 DEG C, 255 DEG C, 255 DEG C, 240 DEG C, the rotating speed of the twin screw is 300rpm, after cooling by a water channel, the extruded material bars are cut into particles so as to obtain the product. The ultraviolet-resistant PC/PET alloy material prepared by the method has the advantages of both PC and PET, and has both excellent ultraviolet resistance and good impact toughness, so that the application range of the PC/PET as exterior trimming parts is enlarged. The preparation method is simple and has low cost.

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