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本文研究了732型苯乙烯磺酸树脂辐射分解动力学,研究结果表明,732型苯乙烯磺酸树脂含有两种不同类型的磺酸树脂。一种为正常的(o,p-)磺酸树脂,另一种为对辐射较敏感的特碳原子磺酸树脂,而非通常文献上认为的m-磺酸树脂。其辐射分解服从一级反应动力学公式。用ESR法测得辐照树脂(经予辐射～10~8拉德处理过)的自由基浓度约为未经处理的4倍。该自由基易为水或加热所猝灭。在γ射线照射下,这两种不同结构的树脂与激发水分子的反应,具有显著差别。导出了辐射水解的动力学公式,并根据树脂中水吸收的能量,计算出受水敏化所致硫酸根的G值。
In this paper, the radiation kinetics of 732 Styrene Sulfonic acid resin was studied. The results show that 732 Styrene Sulfonic acid resin contains two different types of sulfonic acid resin. One is the normal (o, p-) sulfonic acid resin and the other is the radiation-sensitive special carbon sulfonic acid resin rather than the m-sulfonic acid resin, which is generally known in the literature. Its radiation decomposition obeys first-order reaction kinetics formula. The ESR method measured the concentration of free radicals in the irradiated resin (treated with ~ 10 ~ 8 radon) to about 4 times the untreated concentration. The free radical is easily quenched by water or heat. Under the γ-ray irradiation, there are significant differences between the two different structures of the resin and the reaction of the excited water molecules. The kinetic formula of radiative hydrolysis was deduced and the G value of sulfate induced by water sensitization was calculated based on the energy absorbed by the water in the resin.