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聚四氟乙烯(以下简称F_4)具有优良的机械性能和热稳定性及化学稳定性,以它为基材而制得的离子交换膜具有较理想的性能。由于F_4耐氧化,不为任何已知的溶剂溶胀,若采用热化学法来实现F_4接枝改性是十分困难的,因此,F_4辐射接枝改性是一个极为有效的途径。 F_4-丙烯酸辐射接枝的工作,国外已有不少报道,并转向实际应用。国内尚处研制阶段,未见报道。为此,我们开展了F_4-丙烯酸辐射接枝共聚合的研究,以期作为碱性电池主隔膜材料,供高温下使用,同时也为简化电池装配工艺、省却辅助隔膜开辟道路。
PTFE (hereinafter referred to as F_4) has excellent mechanical properties and thermal stability and chemical stability, with it as a base material prepared ion exchange membrane has better performance. F_4 is resistant to oxidation and does not swell for any of the known solvents. It is very difficult to achieve F_4 graft modification by thermochemical method. Therefore, F_4 radiation graft modification is a very effective way. F_4-acrylic acid radiation grafting work abroad, many reports, and turned to practical application. Domestic research stage is still not reported. Therefore, we carried out the F_4-acrylic radiation graft copolymerization research, with a view to alkaline batteries as the main diaphragm material for high temperature use, but also to simplify the battery assembly process, save the auxiliary diaphragm to open the way.