聚乙烯醇复合薄膜的抗紫外线性能

发布时间：2018-01-13 16:42

本文关键词：聚乙烯醇复合薄膜的抗紫外线性能　出处：《包装工程》2016年21期 　论文类型：期刊论文

【摘要】：目的研究聚乙烯醇(PVA)复合薄膜(添加紫外线阻隔剂)的紫外线透过率和透明性能。方法将不同种类、不同质量分数的紫外线阻隔剂与PVA原料混合制备复合薄膜,检测其紫外线透过率、透光率、雾度。结果添加有机紫外线吸收剂UV-284后,薄膜能够有效阻隔大部分紫外线,但影响薄膜的外观,复合薄膜呈黄色。无机的紫外线阻隔剂在PVA薄膜中容易发生颗粒团聚,当Nano-Ti O2的质量分数为2.5%时,复合薄膜的平均紫外线透过率达到2%左右,若再增加质量分数则紫外线透过率变化不大。结论紫外线阻隔剂有效降低了PVA薄膜的紫外线透过率,但同时复合薄膜的透光率降低,雾度上升。综合比较,PVA薄膜中添加Nano-Ti O2的紫外线阻隔效果,比加入相同质量分数的UV-284或Nano-Zn O的复合薄膜要好。
[Abstract]:Objective to study the ultraviolet transmittance and transparency of polyvinyl alcohol (PVA) composite film (adding ultraviolet barrier agent). The composite films were prepared with different mass fraction of UV blockers and PVA raw materials. The UV transmittance, transmittance and haze of the composite films were measured. Results the organic UV absorbent UV-284 was added. The film can effectively block most ultraviolet rays, but affects the appearance of the film, the composite film is yellow. Inorganic UV barrier agent in the PVA film is prone to particle agglomeration. When the mass fraction of Nano-Ti O 2 is 2.5, the average ultraviolet transmittance of the composite film is about 2%. Conclusion UV barrier can effectively reduce the UV transmittance of PVA films, but at the same time, the transmittance of composite films decreases and the fog increases. The UV barrier effect of adding Nano-Ti O 2 in PVA films is better than that of composite films with the same mass fraction of UV-284 or Nano-Zn O.
【作者单位】：河南牧业经济学院;
【分类号】：TB383.2
【正文快照】： 紫外线指电磁波谱中波长从10~400 nm辐射的总称,大量的紫外线辐射危及人们的健康、制品的使用寿命以及内包装物的品质等,因此研究如何提高衣物、制品、薄膜等的抗紫外线性能将会成为热点[1—5]。近年来不可降解、不可回收利用塑料的使用对自然环境造成了很大的危害,因此环境友

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