新型3LPP和3LPE热收缩带补口施工技术对比

摘要

为了更好地掌握和应用3LPP(三层聚丙烯)热收缩带补口施工技术,提高施工质量,从选型、组成、性能、施工要求及流程等方面与3LPE(三层聚乙烯)热收缩带补口进行了对比,并总结了3LPP热收缩带补口的技术要点和施工经验.结果表明:必须针对环境温度变化来合理控制温度,调整配比,并加强操作人员培训;对于3LPP热收缩带补口施工,推荐采用湿膜法和中频加热法,这样既能节约时间,又能提高加热效率和均匀度,有利于保证施工质量.%In order to master and apply the joint coating technique of 3LPP (3-1ayer-polypropylene) heat shrink sleeve (HSS) better and improve its construction quality,the comparison with that of 3LPE (3-layer-polyethylene) HSS was conducted in the respects of selection guide,structure,performance,requirements and procedures of construction.The technical essentials and construction experience of joint coating of 3LPP HSS were summarized.The results show that the temperature should be controlled reasonably and the ratio of hardener to primer should be adjusted according to the change of ambient temperature,and the worker training should be enhanced.Wet film construction method and intermediate frequency heating method are recommended,which can save time and improve heating efficiency and uniformity,and is beneficial to construction quality assurance.