主要介绍了乙烯-醋酸乙烯酯共聚物(EVA)的降解机理.EVA树脂的纯度、分子结构、热加工过程以及交联对其降解有影响,同时气氛、水分以及酸等对EVA的降解也有不同程度的影响,各种添加剂(主要包括抗氧剂、炭黑和填料)对EVA的降解有延缓或促进作用.广泛使用的EVA材料已面临长期使用的现实问题,迫切需要深入地研究其降解过程和影响因素,这颇具理论和实际意义.
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