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CN105820304B 一种高阻隔性纸张用PVDC乳液及其制备方法 有权 转让

一种高阻隔性纸张用PVDC乳液及其制备方法
摘要：
一种高阻隔性纸张用PVDC乳液，由以下重量百分比的原料制成：PVDC乳液60~90%、引发剂0.2%~0.8%、丙烯酸酯单体1%~10%、聚氨酯预聚体8%~40%、中和剂0.15~0.5%。本发明通过接枝的方式，在PVDC的结构中引入了聚氨酯，一方面，增大了其分子量，提高了其自身的柔韧性，另一方面，聚氨酯的引入可以极大程度地提高PVDC乳液的成膜性，使其可以在含有纤维孔的纸张表面成膜，而柔韧性的提升可以有效地防止结晶层的断裂，从而实现了纸张涂布的高阻隔性。
摘要（英）：

High-barrier PVDC emulsion for paper is prepared from, by weight, 60%-90% of PVDC emulsion, 0.2%-0.8% of an initiating agent, 1%-10% of acrylate monomers, 8%-40% of polyurethane prepolymers and 0.15%-0.5% of a neutralizing agent .According to the high-barrier PVDC emulsion, polyurethane is introduced into the structure of the PVDC in a grafting mode, on one hand, the molecular weight of the PVDC is increased, and the flexibility of the PVDC is improved; on the other hand, the film-forming property of the PVDC emulsion can be improved to the utmost extent through introduction of polyurethane, so that the PVDC emulsion can form a film on the surface of the paper containing fiber holes; a crystallizing layer can be effectively prevented from fracturing through improvement of the flexibility, and then the high barrier property of paper coating is achieved.

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