硅酮结构密封胶五年自然曝晒试验结果分析

摘要

对不同厂家、不同配方的5个硅酮结构密封胶样品在广州和吐鲁番进行了五年自然曝晒试验,围绕外观、粘结性、拉伸强度、伸长率、模量等性能变化对试验结果进行了分析,并结合对曝晒样品的DSC、TG等的测试,对样品分子结构发生的变化进行了分析.%This article compares the performance of different manufactories' silicone structural sealants which experienced five years atmospheric exposure test at Guangzhou and Tulufan and analyses the change of molecular structure of the specimens by DSC and TG analysis.