热熔粘胶剂 热稳定性测定

[中文适用范围]： 该方法是将不锈钢或玻璃容器放入油浴或烘箱中，向容器中添加足够量的粘合剂，熔化样品，测量操作温度下的粘度和软化点，在4小时至6小时之间的固定时间间隔，直到达到根据预定标准停止测试的时间，并在每次测量时观察和记录以下现象：结皮、冒烟、相分离、凝胶化、颜色变化。 [外文原描述]： The method is based on placing a stainless steel or glass vessel in an oil bath or oven, adding a sufficient quantity of the adhesive to the vessel, melting the sample, measuring the viscosity at the operating temperature and the softening point, repeating these operations at regular time intervals of between 4 h and 6 h, until the time for stopping the test according to pre-determined criteria is reached, and observing and recording, at the time that each measurement is taken, the following phenomena: skin formation, fumes, phase separation, gelation, change in colour.