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耐候抗撕裂的聚氯乙烯/聚烯烃共挤多层包装材料
InventionUnknown
10Claims · 2 independent
§ Ⅰ
Dossier Overview
Inventor
刘昱彤; 刘全新; 姚静
Filing Date
Jun 16, 2026
Publication Date
Oct 20, 2026
IPC Classification
B32B 27/30 (2006.01)B32B 27/32 (2006.01)B32B 27/18 (2006.01)B32B 27/08 (2006.01)B32B 7/10 (2006.01)B65D 65/40 (2006.01)B29C 48/18 (2019.01)C08L 27/06 (2006.01)C08L 23/286 (2025.01)C08L 23/0884 (2025.01)C08L 51/06 (2006.01)C08L 23/0807 (2025.01)C08K 5/20 (2006.01)C08K 3/36 (2006.01)C08J 5/18 (2006.01)B29L 9/00 (2006.01)
本发明涉及高分子复合包装材料技术领域,公开了一种耐候抗撕裂的聚氯乙烯/聚烯烃共挤多层包装材料及其制备方法。针对两者因热力学不相容致传统粘接层间易剥离且老化后撕裂性能骤降的问题,本发明设置共挤复合的A、B、C三层。A层为含橡胶型氯化聚乙烯弹性网络的聚氯乙烯改性层;B层采用含环氧基团的三元共聚物与马来酸酐接枝氯化聚乙烯复配体系,在季铵盐催化下原位发生环氧‑酸酐交替开环酯化交联,构建三维共价拓扑网络;C层为含乙烯‑辛烯弹性体增韧网络的茂金属聚乙烯层。该材料层间破坏模式转变为基体内聚破坏,千小时紫外老化后撕裂强度保留率超79%。
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