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首页> 外文期刊>Journal of Applied Polymer Science >Comparative investigation of the ultraviolet stabilization of polycarbonate/poly(acrylonitrile-butadiene-styrene) with different ultraviolet absorbers
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Comparative investigation of the ultraviolet stabilization of polycarbonate/poly(acrylonitrile-butadiene-styrene) with different ultraviolet absorbers

机译：不同紫外线吸收剂对聚碳酸酯/聚（丙烯腈-丁二烯-苯乙烯）紫外线稳定性的比较研究

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摘要

When polycarbonate (PC)/poly(acrylonitrile-butadiene-styrene) (ABS) blends are exposed to outdoor conditions, they are mainly degraded by sunlight; this is known as photodegradation. It is the ultraviolet radiation in the sunlight that is responsible for the degradation of the blend. To stabilize the blend against the harmful ultraviolet radiation, ultraviolet absorbers (UVAs) are used. In this study, three different UVAs-Tinuvin 1577 (a hydroxyphenyl triazine type), Cyasorb 5411 (a benzotriazole type), and Uvinul 3030 (a cyanoacrylate type)-were compounded with a PC/ABS blend at 240°C with a twin-screw extruder. Accelerated aging of the compounded sample was done by an Atlas Suntest containing xenon lamp. The degradation studies were performed with ultraviolet-visible spectroscopy, attenuated total reflectance/Fourier transform infrared spectroscopy, and yellowing index measurements. The molecular weight of the compounded sample was determined by gel permeation chromatography. It was found that hydroxyphenyl triazine type UVA showed the best results for decreasing the degradation products, oxidation rate, and yellowing of the PC/ABS blend.
机译：当聚碳酸酯（PC）/聚（丙烯腈-丁二烯-苯乙烯）（ABS）混合物暴露在室外条件下时，它们主要被日光降解;这被称为光降解。是阳光在混合物中降解的紫外线。为了稳定混合物免受有害的紫外线辐射，使用了紫外线吸收剂（UVA）。在这项研究中，将三种不同的UVA-Tinuvin 1577（羟苯基三嗪型），Cyasorb 5411（苯并三唑型）和Uvinul 3030（氰基丙烯酸酯型）与PC / ABS混合物在240°C混合，双螺杆挤出机。通过包含氙气灯的Atlas Suntest加快了复合样品的老化过程。使用紫外可见光谱，衰减的全反射/傅立叶变换红外光谱和泛黄指数测量进行降解研究。通过凝胶渗透色谱法测定混合样品的分子量。发现羟苯基三嗪型UVA显示出降低PC / ABS共混物的降解产物，氧化速率和泛黄的最佳结果。

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