轻度交联有机玻璃的结构与性能研究

STUDIES OF STRUCTURE AND PROPERTIES ON LIGHTLY CROSSLINKING ORGANIC GLASS

本文采用甲基丙烯酸酯类交联剂对目前使用的航空有机玻璃进行共聚交联结构改性,制备了轻度交联改性有机玻璃板材,并对这些板材的耐人工大气老化性能、热一力学性能、透光率、耐应力—溶剂银纹、DMA以及红外光谱分析进行了试验与研究。结果表明,轻度交联有机玻璃板材的上述性能均优于YB3与YB4航空有机玻璃。

In this paper, the chemical structure of aviation perspox have been modified by the copolymerization of two crosslinking agents (allyl methacrylate, diethylene glycol dimthacrylate) with methly methacrylate and methacrylic acid, and four lightly cross linking organic glass plates have been manufactured. Various tests, such as aging stability, heat—mechanical (tensile and impact) properties, transparence, stress—solvent crazing, degree of crosslinking, DMD and infrared spectra of these plates were evaluated and compared with aviation perspex YB3 and YB4 in structure and properties. The results of the studies show that all above—mentioned properties of modified plates is better than aviation perspex YB3 and YB4. So lightly copolymerization—crosslinking is the most effective method to improve heat—mechanical properties and aging—resistence of organic glass plates.