双阻尼分流机头优化设计及对橡胶/蒙脱土纳米复合材料挤出性能的影响

 林广义， 艾冲冲， 高健， 刘树明

（青岛科技大学 山东省高分子材料先进制造重点实验室，山东 青岛 266061）

摘要： 设计了单阻尼流道、单分流挡板流道及双阻尼分流流道结构，模拟了不同流道结构挤出成型过程中的速度场和压力场，对双阻尼分流机头进行了优化设计。并通过橡胶/蒙脱土纳米复合材料的性能测试分析对比了各流道结构的优缺点。结果表明：与单阻尼流道及单分流挡板流道机头相比，双阻尼分流机头能够使胶料的出口速度保持一致，对物料的取向作用也十分明显，并且能更大程度地提高蒙脱土在纳米复合材料中的分散程度，从而改善橡胶/蒙脱土纳米复合材料的加工性能。

关键词： 分流机头； 流道结构； 双阻尼分流； 橡胶/蒙脱土纳米复合材料

中图分类号： TQ 330.4                      文献标志码： A

Design of Doubledamping Diffluent Die and Extrusion Properties of NR/MMT Composite

 LIN Guangyi， AI Chongchong， GAO Jian， LIU Shuming

(Advanced Polymer Processing Technology Key Laboratory of Shandong Province, Qingdao University of

 Science and Technology, Qingdao 266061, China)

Abstract： The flow channel structure of singledamping, single shunt baffle and doubledamping shunt were designed. And the velocity field and pressure field of the extrusion molding process of these flow channel structure were simulated. The doubledamping shunt head was carried out optimized design. The advantages and disadvantages of the flow channel structure were comparatively analyzed through the rubber/montmorillonite nanocomposite performance test. The results show that, when being  compared with flow channel heads of singledamping and single shunt baffle, the doubledamping shunt head enable outlet velocity of the rubber to keep consistent, having a significant effect on the orientation of materials. In addition, it can improve the dispersion degree of the montmorillonite in the composite material to a greater extent, so as to improve the processing performance of the rubber and montmorillonite composite materials.

Key words：  diffluent die; channel structure; doubledamping diffluent; NR/MMT composite

收稿日期： 20140116

基金项目： 山东省自然科学基金项目(ZR2013EMM002);中国博士后科学基金项目（2013M541882）；青岛市科技发展计划项目（12143(30)jch）.

作者简介：  林广义（1975—），男，副教授.

文章编号：16726987（2015）03031107； DOI： 10.16351/j.16726987.2015.03.016