摘要
采用中空纤维柱浓缩法制备天然橡胶胶清橡胶,并对其性能进行研究。结果表明:与未处理胶清橡胶相比,处理后胶清橡胶的丙酮溶物质量分数、塑性初值和塑性保持率均有所增大,挥发分质量分数、杂质质量分数、灰分质量分数和氮质量分数减小。与未处理胶清硫化胶相比,处理后胶清硫化胶的物理性能明显提高;随着处理孔径的增大,硫化胶的物理性能呈下降趋势。与未处理胶清橡胶相比,随着温度的升高,处理后胶清橡胶的损耗因子较小,剪切储能模量较大,表现出较好的加工性能。
The skim natural rubber latex was prepared by hollow fiber ultrafiltration, and the properties of the skim rubber were investigated. The results showed that, compared with untreated skim rubber, the mass fraction of acetone soluble material, initial plasticity and plasticity retention of the modified skim rubber were higher, and the volatile content, impurity content, ash content and ni- trogen content were lower. In general, the physical properties of the vulcanizates of the skim rubberwere significantly improved after ultrafiltration treatment. As the pore size of ultrafiltration increased, the physical properties of the vulcanizates decreased. Moreover, at high temperature range, the modi- fied skim rubber showed smaller loss factor,higher shear storage modulus and better processability.
出处
《橡胶工业》
CAS
北大核心
2013年第7期408-412,共5页
China Rubber Industry
基金
国家自然科学基金资助项目(50963001)
天津大学-海南大学创新基金合作项目
关键词
中空纤维柱
胶清
加工性能
耐老化性能
hollow fiber column
skim latex ~ processability ~ aging resistance
