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【求助】 pvc塑料型材变黄的问题怎么解决
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pvc塑料型材变黄的问题怎么解决 1西北地区更为严重 2型材厂家不想投入资金过多 3国家建材质量检测部门不重视 4国家投给科研部门的资金有限 [search]塑料型材[/search] [ Last edited by wellok101 on 2008-3-31 at 11:26 ] |
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| The yellowish color after long-term use is due to the thermo- or photo-degradation of your polymers and additives. Some of your photo- or thermo-initiator or modifier will show yellowish color after long-term exposure to ultraviolet light, especially at higher temperature and higher humidity. So what you can do is to avoid using excess amount of initiator, plasticizer, and other modifiers in your polymer such as PVC. Also the use of antioxidant, antidegradant, and UV-total reflection film for protection of your materials might be considered for better performance without surface color change. |
7楼2007-05-04 22:08:40