手表行业用密封橡胶圈的基本性能研究

Research on the Basic Properties of the Rubber Seal Ring in Watch Industry

对手表行业现用的密封圈进行性能对比研究,研究内容包括人工汗腐蚀试验、耐冷冻试验、耐湿热试验、耐热老化试验,并比较试验前后的拉断伸长率,确定密封圈的性能。结果表明:密封圈的横截面积根据实际的防水需要,越大越好;密封圈经人工汗腐蚀试验、极限冷冻试验和湿热老化试验后,表面没有出现硬化、变色、龟裂、腐蚀和长霉等现象,其拉断伸长率较试验前没有太大的变化,老化系数E≈1;以密封圈作为密封材料的手表,不建议高温作业人员在高温环境下使用。

The performance comparison of the rubber seal was studied,including artificial sweat corrosion test,freeze-resistant test,heat resistance test and thermal aging test. And the elongation at break before and after the test was compared to determine the performance of seals. The results showed： the cross-section of the sealing ring according to the actual needs of water,the bigger the better; rubber seals should not be discoloration,cracking,corrosion and mildew and other phenomena after hardening artificial sweat corrosion test,ultimate freezing test and heat aging test; its elongation should not have changed much at break test; it is not recommended to use in high temperature environments if watch used the sealing material.