自然光老化对PVC-O管材外观及力学性能的影响

Effects of natural light aging on appearance and mechanical properties of PVC-O pipes

考察了自然光老化对PVC-O管材外观颜色、尺寸、表面微观情况和力学性能的影响。结果表明:短期内自然光老化对PVC-O管材力学性能的影响不大,但对外观颜色及尺寸的影响明显,管材表面出现粉化现象,不建议在户外长期使用PVC-O管材。

The effects of natural light aging on the appearance color,size,surface micro condition and mechanical properties of PVC-O pipes were investigated.The results showed that the natural light aging had little effect on the mechanical properties of PVC-O pipes in short term,but significantly influenced appearance color and size.The surface of PVC-O pipes appeared pulverization phenomenon.It was not recommended to use PVC-O pipes outside for a long time.