介绍了热重分析法在聚氨酯密封胶检测中的应用,利用热重分析,根据失重台阶所在温度和对应的失重率,可以计算出密封胶中粉、液料比以及大致粉、液料种类。 The application of thermogravimetric analysis in the testing of polyurethane sealant is introduced. The thermogravimetric analysis can be used to calculate the ratio of powder to liquid to liquid and the type of powder and liquid in the sealant according to the temperature at which the weightlessness step is located and the corresponding weight loss rate.