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本文研究了双甲基丙烯酸乙二醇酯(EGDMA)对无规1,2-聚丁二烯(1,2-PB)辐射效应的影响。通过辐照1,2-PB和不同EGDMA/1,2-PB比率体系的溶胶分数测定,红外光谱分析及~1H-NMR测试结果,讨论了EGDMA对1,2-PB辐射化学反应(分子间交联及分子内环化)的作用及机理。结果证明,1,2-PB辐射引起的链式交联反应不因EGDMA的存在而改变(无规链反应),但EGDMA的存在将增加1,2-PB的交联引发G(I)值和交联G(c.1)同时导致G(-V)和G(cy)值的减小,抑制或减少,内环化过程。
In this paper, the effects of ethylene glycol dimethacrylate (EGDMA) on the radiation effects of 1,2-polybutadiene (1,2-PB) were investigated. The effects of EGDMA on the chemical reaction of 1,2-PB were studied by means of sol fraction determination, infrared spectroscopy and ~ 1H-NMR measurement of irradiated 1,2-PB and different EGDMA / 1,2-PB ratio systems Crosslinking and intramolecular cyclization) role and mechanism. The results demonstrate that the chain cross-linking reaction by 1,2-PB radiation is not altered by the presence of EGDMA (random chain reaction), but the presence of EGDMA will increase the value of the cross-linked initiation G (I) of 1,2-PB And the cross-linking of G (c.1) resulted in both the reduction of G (-V) and G (cy) values, the inhibition or reduction of the internal cyclization process.