摘要
以环氧树脂为样品,采用差示扫描量热法对玻璃化转变温度进行了测试,并从样品用量、升温速率和样品形态3个角度进行了系统分析。结果表明:样品的玻璃化温度会随着质量的增大而增大,样品产生热滞后的程度与升温速率大小呈正比,因此综合考虑选择升温速率为10℃/min。加工成粉末状样品,热滞后性能也会变小,由此也能够充分将热反应完全,获得比较准确的测试值。
Taking CY24-1 epoxy resin as a sample,the glass transition temperature was measured by differential scanning calorimetry.The system was analyzed from three aspects:sample dosage,heating rate and sample morphology.The results show that the glass transition temperature of the sample increases with the increase of weight.The degree of thermal hysteresis of the sample is in direct proportion to the heating rate,so the heating rate is 10℃/min.When processed into powder samples,the thermal hysteresis performance will also become smaller,which can fully complete the thermal reaction and obtain more accurate test values.
作者
张杰
周楠
杜桂芬
于杰
Zhang Jie;Zhou Nan;Du Guifen;Yu Jie(Jiangsu Jingjiang Transformer Co.,Ltd.,Jingjiang 214500,China)
出处
《云南化工》
CAS
2022年第5期107-109,共3页
Yunnan Chemical Technology
关键词
测试条件
玻璃化转变
温度
差示扫描量热法
test conditions
glass transition
temperature
differential scanning calorimetry
