无机粉体改性纺粘非织造布的结晶与降解

研究无机粉体改性聚丙烯纺粘非织造布的生产工艺、产品的结晶结构和结晶度，分析这种材料在光降解过程中结晶度和力学性能变化的原因。结果表明：聚丙烯纺粘非织造布添加无机粉体后，结晶度提高，其晶型结构也发生了明显的改变；在光降解过程中,随着光照时间增加，结晶度先增后减；无机粉体能促进光降解加快进行，无机粉体含量愈高，光降解速度就愈快。通过调节生产工艺，改变复合无机粉体的添加量，可以实现经济性、功能性和环境协调性。

Crystallinity and degradation of inorganic powder modified polypropylene spun-bonded nonwoven fabric

This article addressed the production technology of the inorganic powder modified polypropylene spun-bonded nonwoven fabric, and the crystalline structure and crystallinity of the product, along with the cause leading to the change of crystallinity and mechanical properties of the product in the process of light-degradation. The research indicated that addition of the inorganic powder increased the crystallinity and varied the crystalline structure of polypropyiene spun-bonded nonwovens. In the process of light-degradation the crystallinity first increased and then decreased. The inorganic powder can accelerate the process of light-degradation of the product. The higher the content of inorganic powder, the faster the light-degradation. By means of adjusting the production technology and changing the dosage of inorganic powder, economy, functionality and environmental protection can be realized.