四氟乙烯单体聚合工艺的优化设计探索
Optimization Design Exploration of Tetrafluoroethylene Monomer Polymerization Process
张清华1
作者信息
- 1. 江西宏柏新材料股份有限公司,江西乐平 333300
- 折叠
摘要
聚四氟乙烯(PTFE)因其优异的综合性能在诸多领域得到广泛应用,但传统的四氟乙烯(TFE)单体聚合工艺仍存在引发效率低、温控困难、产物分子量分布宽以及转化率不理想等问题.针对上述难题,从引发剂优选、聚合温度精准调控、链转移剂设计和过程强化等方面,提出了一系列TFE单体聚合工艺的优化策略.实验结果表明,优化后的微通道聚合工艺使PTFE的数均分子量提升1倍以上且分布更均一,结晶度提高10%以上,单体转化率和引发效率分别达到96%和25%以上,为PTFE的绿色高效制备提供了新思路.
Abstract
Polytetrafluoroethylene(PTFE)has been widely used in many fields due to its excellent comprehensive performance.However,the traditional tetrafluoroethylene(TFE)monomer polymerization process still faces problems such as low initiation efficiency,difficult temperature control,wide molecular weight distribution of the product,and unsatisfactory conversion rate.This article proposes a series of optimization strategies for TFE monomer polymerization process from the aspects of initiator selection,precise control of polymerization temperature,chain transfer agent design,and process enhancement,in response to the above-mentioned difficulties.The experimental results showed that the optimized microchannel polymerization process increased the number average molecular weight of PTFE by more than twice and the distribution was more uniform,the crystallinity increased by more than 10%,the monomer conversion rate and initiation efficiency reached 96%and 25%,respectively,providing a new idea for the green and efficient preparation of PTFE.
关键词
聚四氟乙烯/四氟乙烯/聚合工艺/微通道反应器Key words
polytetrafluoroethylene/tetrafluoroethylene/polymerization process/microchannel reactor引用本文复制引用
出版年
2024
NETL
NSTL
万方数据