梯度等温结晶法鉴别燃气管用PE树脂  

Fast Appraisal of Polyethylene Resin for Gas Pipe by Means of Gradient Isothermal Crystallization

作　　者：任显诚[1] 王贵恒[1] 宣平[2] 吴宇[2] 

机构地区：[1]四川大学高分子科学与工程学院,成都610065 [2]四川省产品质量监督检验检测院,成都610031

出　　处：《化学建材》2007年第5期21-23,39,共4页Chemical Materials for Construction

摘　　要：通过等速降温结晶和梯度等温结晶两种方法对国内市场的几种主要燃气管用聚乙烯树脂进行DSC测试。结果表明,采用梯度等温结晶制得的样品DSC熔融曲线有多重熔融峰,测试结果重复性好,不同样品间测试区分度高,可以实现对未知燃气管材材质归属的快速判定。Differential scanning calorimetry （DSC） tests were carried out on several main polyethylene gas pipes on domestic market by means of Isovelocity Temperature Drop Crystallization and Gradient Isothermal Crystallization. Testing results indicated that DSC fusion curve of samples prepared by means of gradient isothermal crystallization revealed multiple fusion peaks, good repetition of testing results, high differentiation between different samples facilitating a reliable fast appraisal of unknown quality of gas piping.

关 键 词：梯度等温结晶 DSC 燃气管 聚乙烯 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]