玻璃化转变温度测试方法对测试结果的影响

摘要

The glass transition temperature of fiber glass reinforced nylon 66 and PE-HD was measured by means of differential scanning calorimetry ( DSC ) and dilatomery (DIL ) .The results showed that the glass transition temperature changed with the different measurement methods and conditions, the glass transition temperature obtained by means of different measurement methods wasn't comparable. The adopted measurement methods and conditions should be specified in the description of glass transition temperature.%以玻纤增强尼龙66、高密度聚乙烯为样品,分别采用差示扫描量热法和热膨胀法测试了样品的玻璃化转变温度(Tg).结果表明,材料的Tg随测试方法、测试条件的不同而变化,采用不同的测试方法所得的Tg结果之间不具有可比性,在说明某种材料的Tg时,应注明所采用的测试方法和测试条件.