塑料片材的组成、结构与其裂纹问题分析

On Analysis of Interrelation of the Composition,Structure and Crack Problem of Plastics Slice Material

本文用傅立叶红外光谱仪 ,X 射线荧光光谱仪 ,电子显微镜 ,拉力试验机对两种片材进行了组成、结构与性能分析。在此基础上 ,用自由体积理论和界面化学理论讨论了薄片的断裂问题。研究发现增塑剂的用量十分关键。

In this paper, we analyse the composition,structure and property of two kinds of slice materials by FTIR spectrometer,X ray fluorometer and tension test device. Results show that: 1) K thin slice consists of PVC resin, plasticizer(15 5%) and a little additive. Its structures look like woollen blanket. Its property is good. 2) L thin slice consists of PVC resin, the plasticier (13 2%), CaCO 3 (6 59%) and little additive. There is a little crack on its structure. On these bases, the rupture problem of thin slice is discussed by the theory of the freedom volume and of the boundary chemistry. Research shows that the keys to question are the composition of the thin slices and the quantity of plasticizer.