【摘要】 <正> 有机玻璃,化学名聚甲基丙烯酸甲酯,是一个重要的光学塑料品种。为了使之适应日益发展的现代科学技术的要求,近来各国竞相研究开发新产品,特别期望制备结构交联型的聚甲基丙烯酸甲酯。但目前仅制得轻度交联的或表面浸渍涂层交联的有机玻璃。 制备交联型聚合物,通常多以不饱和单体参与共聚而成。文献曾报道未用这种单体更多还原

【Abstract】 In order to improve the properties of plexi glass and develop new product, the possibility for preparing crosslinking polymethyl methacrylate was tried. Three methods were carried out:A. Methyl methacrylate was polymerized in bulk at room temperature.B. Radiation polymerization of methyl methacrylate in the supercooled liquid phase between the range of - 20--10℃ were observed.C. Under certain experimental conditions, highly crosslinked polymethyl methaery-late could be formed. Crosslinked polymer of Mc=2×l04 means linear polymer with molecule weight of 2 × 106 which had 100 crosslinking points.The measurement of Mc, average molecular weight between crosslinks was established by measuring the swelling capacity of crosslinking polymethyl methacrylate.更多还原