耐白蚁聚乙烯燃气管道研究  

Study on Termite-resistant Polyethylene Gas Pipes

作　　者：张慰峰 李统一 宋科明 王亭亭 周平 

机构地区：[1]广东联塑科技实业有限公司,广东佛山528318

出　　处：《中国塑料》2017年第8期52-55,共4页China Plastics

摘　　要：研究了4种聚乙烯(PE)及2种聚丙烯(PP)材料管材的耐白蚁性能;探讨了带PP外保护层的耐白蚁PE燃气管共挤工艺及黏附力改性剂对外保护层PP剥离强度的影响。结果表明,PE材料的蛀蚀等级均为3级,肖氏硬度(D)达到73.5的PP材料蛀蚀等级为1级;采用分步共挤技术制备燃气管材能更好地满足其加工和使用要求;外保护层的剥离强度随黏附力改性剂添加量的增加而增大,当其添加量在3份(质量份,下同)以上时,剥离强度达到最佳控制范围。In this work, termite-resistant gas pipes were manufactured by using four types of polyethylene （PE） and two types of polypropylene （PP） and their resistance to termite damage was investigated intensively. Effects of coextrusion technology and adhesion modifiers on peel strength of PP protection layer were also evaluated. The results mdicated that damage level of the pipes by termites reached 3 when being prepared by using PE, but it could reach 1 by using PP protection layer with a shore hardness of 7 3. 5. The step-by-stepcoextrusion technology was considered as an optimum choice for the preparation of termite-resistant gas pipes. The peel strength of the protection layer increased with an increase of the content of the adhesion modifier, and it reached an optimum value when more than 3 phr of adhesion modifier was added into the protection layer.

关 键 词：聚乙烯 聚丙烯 耐白蚁性能 分步共挤技术 剥离强度 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]