CAJ | 학술논문

溶液法制备丁基橡胶可以直接得到丁基橡胶胶液，为溴化节省工艺步骤。但由于丁基橡胶优异的气密性，使得胶液中未反应的异丁烯单体很难彻底脱除。采用顶空气相色谱建立了测定胶液中异丁烯质量浓度的方法，将含有不同质量浓度异丁烯的胶液溴化，探究了异丁烯残留量对丁基橡胶溴化的影响。结果表明，随着胶液中异丁烯质量浓度的增加，溴化丁基橡胶的含溴质量分数不断降低，且溴代仲位烯丙基结构与溴代伯位烯丙基结构的相对摩尔比值逐渐增大。
용액법제비정기상효가이직접득도정기상효효액，위추화절성공예보취。단유우정기상효우이적기밀성，사득효액중미반응적이정희단체흔난철저탈제。채용정공기상색보건립료측정효액중이정희질량농도적방법，장함유불동질량농도이정희적효액추화，탐구료이정희잔류량대정기상효추화적영향。결과표명，수착효액중이정희질량농도적증가，추화정기상효적함추질량분수불단강저，차추대중위희병기결구여추대백위희병기결구적상대마이비치축점증대。
Butyl rubber solution directly can be obtained in the synthesis of butyl rubber by solution process,which shortens the bromination steps.While in this process it is difficult to remove the isobutylene monomer in butyl rubber solution completely because of the great air-tightness of butyl rubber.The mass concentration of residual isobutylene in butyl rubber solution was effectively determined by Headspace Gas Chromatography.The effects of residual isobutene monomer on bromination of butyl rubber were investigated.The results showed that the bromine content decreased rapidly,while the mole ratio of structure II and structure III increased with the increasing of the concentration of isobutylene.