同向非对称双螺杆挤出TPU／PP共混体系研究.pdf

15年1月
2015.27(2)MODERN PLASTICS
PROCESSING AND APPLICATIONS
現代型料加x用
同向非对称双螺杄挤出TPU/PP共混体系研究
罗家胜徐百平”杜遥雪2冯彦洪
(1.广东轻工职业技术学院,广东高校高分子材料加工工程技术开发中心,广东广州,510300:2.五邑大学机电
工程学院,广东江门,529020;3.华南理工大学聚合物成型加工教育部重点实验室,广东广州,510640)
摘要:通过对同向非对称双螺杆挤出机和传统同向双螺杄挤出机的应用,研究了在无添加相容剂情况下热塑性聚氨酯/聚
丙烯(TPU/PP)共混体系的力学性能和相形态。结果表明,和传统同向双螺杆挤出机相比,同向非对称双螺杆挤出机在长径比
和捏合块均减少的情况下加工的共混物力学性能更好,分散相的平均粒径更小、更均匀,并且共混物的初性和相容性更好。
关键词:聚丙烯热塑性聚氨酯同向非对称双螺杆力学性能共混
Studies on TPU/PP Blends Processed in
Co-rotating Non-twin Screws Extruder
Luo Jiasheng " Xu Baiping"Du Yaoxue Feng Yanhong
(1. Technology Development Center for Polymer Processing Engineering of Guangdong
Colleges and Universities, Guangdong Industry Technical College, Guangzhou
Guangdong, 510300; 2. College of Mechanical and Electrical Engineering
Wuyi University, Jiangmen Guangdong 529020; 3. National Engineering Research
Center of Novel Equipment for Polymer Processing
South China University of Technology, Guangzhou, Guangdong, 510640)
Abstract: Using co rotating non-twin screw extruder and the traditional twin screw
A extruder, the mechanical properties and morphology of thermoplastic polyurethane/po\y*
propylene blends without adding any compatibilizers were investigated. The results indi-
cate that compared to traditional twin screw extruder, in the case that the non-twin screw v
A extruder has shorter I /D ratio and fewer kneading blocks, the mechanical properties of
non-twin screw extruded blends are better, and the average particle size of dispersed phase
is smaller and more uniform, moreover, the toughness and compatibility of the blends are
A better
Key words: polypropylene; the
lermoplastic polyurethane: co-rotating non-twin screw
mechanical properties; blend
基于混沌动力学对称破缺思想,徐百平通过引
人非对称流道来强化混沌混合和拉伸流,并研制了
同向非对称双螺杆挤出机,这种新型设备具有2
收稿日期:201403-19;修改稿收到日期:2014-11-20
条形状不同的螺杆,其转速可以相同或不同,转速
作者简介:罗家胜,男,在读硕士研究生,主要从事高分子材
料加工。E-mail; luodisheng(@163,com
比为2的同向非对称双螺杆挤出机左右螺杆非对
通信联系人,E-mail:xubaiping2003@163.com
称导致左右螺杆对应螺槽体积不一致,物料流经过
基金项目:国家自然科学基金项目(11272093);广东省部产
程中受到周而复始的拉伸压缩。通过二维数值仿
学研项目(2012Bの91100432);广东省高等职业院校珠江学
真,得出同向非对称双螺杆挤出机(NTSE)的分布
者岗位计划资助项目(2012);广东轻院自然科学基金
混合和分散混合优于传统的同向双螺杆挤出机
(KJ201212)。
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