Zhao Jinshun, Li Chun, Sui Jiayang, Jiang Shuai, Zhao Weizhen, Zhang Shihao, Wu Rong, Li Jintong, Chen Xuhuang
Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China.
Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
Materials (Basel). 2023 Jun 26;16(13):4600. doi: 10.3390/ma16134600.
In this work, we propose, for the first time, a simple, fast, and efficient strategy to fabricate high-performance rigid crosslinked PVC composites by continuous extrusion. This strategy improves the poor processing fluidity of composites and solves the impossibility of conducting extrusion in one step via using microcapsule-type crosslinking agents prepared by in situ polymerization to co-extrude with PVC blends. The results demonstrate that the PVC/microcapsule composites were successfully prepared. Within the studied parameters, the properties of crosslinked PVC gradually increased with the addition of microcapsules, and its Vicat softening temperature increased from 79.3 °C to 86.2 °C compared with pure PVC. This study shows the possibility for the industrial scale-up of the extrusion process for rigid crosslinked PVC.
在这项工作中，我们首次提出了一种简单、快速且高效的策略，通过连续挤出制备高性能刚性交联聚氯乙烯复合材料。该策略改善了复合材料较差的加工流动性，并解决了通过使用原位聚合制备的微胶囊型交联剂与聚氯乙烯共混物共挤出而无法一步进行挤出的问题。结果表明，成功制备了聚氯乙烯/微胶囊复合材料。在所研究的参数范围内，交联聚氯乙烯的性能随着微胶囊的添加而逐渐提高，与纯聚氯乙烯相比，其维卡软化温度从79.3℃提高到了86.2℃。本研究表明了刚性交联聚氯乙烯挤出工艺进行工业放大的可能性。
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