摘要
以N-[(4-溴-3,5-二氟)苯基]马来酰亚胺(BDPM)、苯乙烯(St)和甲基丙烯酸缩水甘油酯(GMA)为原料,通过溶液聚合制备了N-[(4-溴-3,5-二氟)苯基]马来酰亚胺/苯乙烯/甲基丙烯酸缩水甘油酯(BDPM/St/GMA)三元共聚物,采用红外光谱(FTIR)对其结构进行了表征,通过元素分析和环氧值测定以及热分析研究了原料物质的量比对共聚产物性能的影响。结果表明:随着BDPM含量增加,产物的环氧值降低,热稳定性提高。共聚产物在空气和氮气条件下的热解机理不同,在氮气中具有更好的热稳定性。Flynn-Wall-Ozawa法求得BDPM/St/GMA的热分解表观活化能为143.55 kJ/mol,具有优良的热稳定性。
The N - [ （4 - bromo - 3, 5 - difluorine） phenyl ] maleimide/styrene/glycidyl methacrylate terpolymer was synthesized by solution polymerization using N - [ （4 - bromo - 3, 5 - difluoro） phenyl ] maleimide （ BDPM ）, styrene （St）, and glycidyl methacrylate（GMA） as raw material. The structure of the product was characterized by FFIR. The effects of molar ratio of raw materials on the properties of product copolymers was investigatd by elemental analysis, epoxy value determination and thermal analysis. The result showed that the epoxy value of the terpolymer was decreased and the thermal stability was increased with the increasing of BDPM content. The pyrolysis mechanisms of copolymer products in the air atmosphere and nitrogen were different and the terpolymer had a better thermal stability in nitrogen. The thermal decomposition apparent activation energy of BDPM/St/GMA obtained by Flynn - Wall - Ozawa method was 143.55 kJ/mol and the BDPM/St/GMA had excellent thermal stability.
出处
《热固性树脂》
CAS
CSCD
北大核心
2013年第5期10-14,共5页
Thermosetting Resin
