The result showed after 60 days of light irradiation, the tensile strength of the PBT filled with UV resistant agent decreased only 1%, impact strength decreased 1.5%, and YI was less than 3.

• 结果表明，加有抗紫外线剂的PBT专用料经灯照后60天，拉伸强度仅下降1%25，冲击强度下降1-5%25，黄光指数小于3。