摘要
采用高密度聚乙烯为原料,通过溶剂辅助热解的方法制备聚乙烯蜡,考察不同溶剂、不同反应条件对产品产率及产品性能的影响。结果表明,溶剂选用A和B按体积比2∶3混合溶剂时效果最好。经过正交实验发现,影响产率的因素由主到次依次为:温度,时间,剂料比。最佳反应条件为:温度320℃,时间3h,剂料比1∶1。最佳条件下制备的聚乙烯蜡产品的相对分子质量在2 000左右,熔程为118～123℃。
Polyethylene wax is prepared by pyrolysis of high density polyethylene in solvent. The effect of various solvents and reaction conditions on the product yield and properties was investiga- ted. Test results show that mixed solvent with a mixing ratio of A/B= 2 ： 3 could be the optimal solvent for preparing polyethylene wax. By orthogonal experiments,it is shown that factors affecting the product yield are in the order of temperature〉time〉solvent/feed ratio. Under the optimum conditions of a reaction temperature of 320 ℃ ,a reaction time of 3 h and solvent/feed ratio of 1,the obtained product has a relative molecular weight of around 2 000 and melting range of 118--123 ℃
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2011年第11期66-69,共4页
Petroleum Processing and Petrochemicals
基金
国家自然科学基金项目(批准号:20906005)
北京市属高等学校人才强教深化计划项目(PHR20110517
PHR201108362
PHR200907129)
北京市组织部项目(2009D005005000001)
北京化工大学化工资源有效利用国家重点实验室开放课题资助
北京石油化工学院青年基金项目
关键词
聚乙烯蜡
溶剂
相对分子质量
正交实验
polyethylene wax
solvent
relative molecular weight
orthogonal experiment
