| 反应挤出法制备高熔体强度聚丙烯的研究 |
| |
| 引用本文： | 杨淑静,宋国君,谷正,杨超,崔永敏.反应挤出法制备高熔体强度聚丙烯的研究[J].工程塑料应用,2007,35(7):30-34. |
| |
| 作者姓名： | 杨淑静 宋国君 谷正 杨超 崔永敏 |
| |
| 作者单位： | 1. 青岛大学高分子材料研究所,青岛,266071
2. 青岛农业大学海都学院,莱阳,265200 |
| |
| 摘 要： | 采用不饱和硅烷为接枝单体,不饱和烯烃为交联助剂,在双螺杆挤出机上一步法实现了均聚型聚丙烯(PP)的接枝交联,制得了高熔体强度PP。结果表明,接枝单体、交联助剂、引发剂均显著地影响PP的熔体流动性能。在硅烷和交联助剂共存的条件下,PP的熔体流动性能随引发剂过氧化苯甲酰(BPO)用量的增加而下降。交联助剂起到稳定大分子自由基的作用,增加了硅烷的接枝效率和接枝速率;并指出硅烷接枝交联法是目前制备高熔体强度PP方法中最有希望实现工业化生产的技术。
|
| 关 键 词： | 高熔体强度聚丙烯 硅烷 接枝交联 熔体流动速率 反应机理 |
| 修稿时间： | 2007-04-25 |
STUDY ON THE PREPARATION OF HIGH-MELT-STRENGTH PP BY REACTIVE EXTRUSION METHOD |
| |
| Yang Shujing,Song Guojun,Gu Zheng,Yang Chao,Cui Yongmin.STUDY ON THE PREPARATION OF HIGH-MELT-STRENGTH PP BY REACTIVE EXTRUSION METHOD[J].Engineering Plastics Application,2007,35(7):30-34. |
| |
| Authors: | Yang Shujing Song Guojun Gu Zheng Yang Chao Cui Yongmin |
| |
| Affiliation: | 1 The Institute of Polymer Materials, Qingdao University, Qingdao 266071, China; 2 Haidu Institute of Qingdao Agriculture University, Laiyang 265200, China |
| |
| Abstract: | High-melt-strength PP was prepared by one step silane-grafting and cross-linking of isotactic PP with two-screw extruder,using unsaturated silane as grafting monomer,unsaturated hydrocarbon as co-agent.The results showed that each agent in the system had great effect on the melt-flow-rate(MFR).The fluidity of modified PP decreased with the increasing of the content of initiator BPO.The introduction of co-agent increased the degree and rate of silane grafting and cross-linking by stabilizing macromolecular radical.The preparation method of high-melt-strength PP by silane-grafting and cross-linking was in prospect of industrialization in existing method. |
| |
| Keywords: | high-melt-strength PP silane grafting and cross-linking MFR reactive mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
