无机纳米粉体改性聚乙烯防雾滴膜  

Study on anti-fog films of polyethylene modified with inorganic nano-powders

作　　者：陆桂娜[1] 李树材[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300222

出　　处：《合成树脂及塑料》2004年第3期51-54,共4页China Synthetic Resin and Plastics

摘　　要：采用熔融共混制备了纳米级CaCO3、有机膨润土和微米级滑石粉改性的聚乙烯(PE)防雾滴膜,通过考察该膜的防雾滴性能以及防雾滴剂从膜中析出的情况,并借助傅里叶变换红外光谱仪、紫外可见分光光度计对纳米CaCO3的添加方式、不同粉体的改性效果及不同处理剂的影响进行了研究。结果表明,纳米CaCO3改性膜的无滴持效期明显长于其他2种粉体改性的膜;将纳米CaCO3与防雾滴剂预混合可提高膜的防雾滴性能;纳米CaCO3在膜中的质量分数仅为1.06％时,膜的红外线(7～14μm)透过率及紫外线透过率会有一定程度的降低;马来酸酐接枝PE蜡的添加使纳米CaCO3改性膜的无滴持效期进一步延长。Anti-fog films of polyethylene modified respectively with nano-CaCO3, nano-organic bentonite and talcum powder of micrometer were prepared by the process of melt blending. Through examination of antifogging property of the film and migration of the anti-fog agents from the film, the way to add nano-CaCO3, the modification effectiveness of various powders and the influence of different treating agents were studied with Fourier transform infrared spectrometer and ultra violet spectroscope. The results indicate that the anti-fog property of the film can be improved by premixing nano-CaCO3 with the anti-fog agents; the film modified by nano-CaCO3 has an anti-fog durability that is obviously longer than the films modified by the other two kinds of the powders. The infrared (7-14 μm) and ultraviolet transmittance of the films can be decreased to a certain extent when the content of the nano-CaCO3 in the film was merely 1.06%. Addition of maleic anhydride-grafted polyethylene wax can make the anti-fog durability of the films modified by nano-CaCO3 be further prolonged.

关 键 词：聚乙烯 无机纳米粉体 纳米碳酸钙 防雾滴膜 无滴持效期 改性 熔融共混 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业] TB383[一般工业技术—材料科学与工程]