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含氟高聚物具有耐热、耐寒、耐化学介质,电绝缘性好和低摩擦系数等许多优异性能,而聚四氟乙烯的性能居于含氟高分子材料的首位,故有塑料王之称。接枝共聚是高分子材料的改性和合成新的高聚物的重要途径,高能射线辐射接枝的方法,现在发展很快。聚四氟乙烯对化学介质特别稳定,因而用化学法对聚四氟乙烯进行接枝反应是很困难的,反应条件极端苛刻,几乎无法实现,但用辐射接枝法就非常方便。可是,国际上A.Chapiro等也只是对聚四氟乙烯在真空条件下辐射接枝,其接枝率也不高,故实用范围受到很大限制,生产条件还要受到一定的限制。本工作研究了聚四氟乙烯—苯乙烯辐射接枝共聚,着重研究采用最简便的条件,在室温、空气预辐
Fluoropolymer has many excellent properties of heat resistance, cold resistance, chemical resistance, good electrical insulation and low friction coefficient, while the performance of PTFE is in the first place of fluorine-containing polymer materials, so the name of plastic king . Graft copolymerization is an important way to modify polymer materials and synthesize new polymers. The method of high-energy radiation grafting is now developing rapidly. Polytetrafluoroethylene is particularly stable to chemical media, so it is very difficult to chemically graft polytetrafluoroethylene. The reaction conditions are extremely harsh and almost impossible to achieve. However, irradiation grafting is very convenient. However, the international A. Chapiro, etc. are only on the Teflon radiation grafting under vacuum, the grafting rate is not high, so the practical range has been greatly limited, production conditions have to be subject to certain restrictions. This work studied the polytetrafluoroethylene - styrene radiation graft copolymerization, focusing on the study using the most convenient conditions at room temperature, air pre-radiation