摘要
研究了防老剂RD、4010NA、D、MC并用体系对丁基热熔胶老化效果的影响.对丁基热熔胶加工性能、老化(高温热氧老化、湿-热老化、热循环老化和紫外老化)前后力学性能、热稳定性、水蒸气透过率进行研究,以确定相对较佳的组合比例.研究结果表明:(1)采用防老剂RD、4010NA、D、MC并用体系能改善丁基热熔胶的耐老化性能,剪切强度得到提高,水蒸气透过率上升幅度降低,内聚破坏率能保持在72%以上.其中防老剂RD/4010NA/MC在配合使用时,材料的耐老化性能相对其他配方较好.(2)综合考虑老化前后的情况下,防老剂并用体系较好的添加量为m(RD)∶m(4010NA)∶m(MC)=3∶3∶2.5.
Abstract
The influence of the combination system of anti-aging agents RD,4010NA,D,and MC on the aging effect of butyl hot melt adhesive was studied.The processing performance,mechanical properties,thermal stability,and water vapor transmission rate before and after aging(high-temperature thermal oxidative aging,wet-heat aging,thermal cycling aging,and UV aging)of butyl hot melt adhesive were investigated to determine the relatively optimal combination ratio.The research results showed that,(1)The combination use of anti-aging agents RD,4010NA,D,and MC could improve the aging resistance of butyl hot melt adhesive,increased shear strength,reduced the increase in water vapor transmission rate,and maintained a cohesive failure rate of over 72%.Among them,the anti-aging agent RD/401NA/MC when used in combination had better aging resistance compared to other formulations.(2)Taking into account the situation before and after aging,the optimal addition amount of anti-aging agents in the system was m(RD):m(4010NA)∶m(MC)=3∶3∶2.5.
维普
万方数据