PVA对防雾PE膜的防雾性能的影响

Effect of PVA on Anti fogging Property of Anti fogging PE Film

研究了ＰＶＡ对ＰＥ防雾膜的防雾寿命的影响。发现ＰＥ防雾膜的防雾寿命随ＰＶＡ加入量的增加而增加，在加入量超过一定范围时，其防雾寿命开始下降。电镜照片对这一结果予以合理的解释。力学性能测试结果表明，加有ＰＶＡ的ＰＥ防雾膜在拉伸强度，直角撕裂强度，断裂伸长率等方面比未加ＰＶＡ的防雾膜要小，但不影响其使用性能。

The effect of PVA on the anti fogging property of PE film was studied.The experimental results showed that the anti fogging servicelife of the film increased with the increase of PVA content,but decrease when the PVA content increased to a certain level,and this was explained by TEM photographs.The mechanical experimental results showed that PVA had a little effect on the tensile strength,right angle tear strength and elongation at break,and had no harmful effect on the application of the film.