Method for Determining Degradation of Thermoplastics
    87.
    发明申请
    Method for Determining Degradation of Thermoplastics 有权
    确定热塑性塑料退化的方法

    公开(公告)号:US20170052108A1

    公开(公告)日:2017-02-23

    申请号:US15343300

    申请日:2016-11-04

    Abstract: A method of determining degradation of a thermoplastic when exposed to light and heat includes illuminating the thermoplastic with a desired wavelength of light at a desired irradiance while maintaining the ambient air surrounding the thermoplastic at a desired temperature. The method is useful to measure the discoloration rate of transparent, translucent and opaque thermoplastics such as polycarbonates, the discoloration rate being determined by transmission or reflectance spectra of transmitted or reflected white light through or from the thermoplastic.

    Abstract translation: 当暴露于光和热时,确定热塑性塑料的降解的方法包括以期望的辐照度以期望的光线照射所需的光纤,同时将包围热塑性塑料的环境空气保持在期望的温度。 该方法可用于测量透明,半透明和不透明热塑性塑料如聚碳酸酯的变色率,变色速率由通过或来自热塑性材料的透射或反射白光的透射或反射光谱确定。

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