抗疲劳剂PAPI在缺气保用轮胎支撑胶中的应用

Application of Anti-fatigue Additive PAPI in Support Compound for Run-flat Tire

研究抗疲劳剂PAPI的性质及其在缺气保用轮胎支撑胶中的应用。抗疲劳剂PAPI含有多官能团马来酰亚胺化合物,其多苯环结构有助于炭黑的分散,并可通过Alder-Ene反应直接参与橡胶的硫化交联,重构交联网络。试验结果表明:将抗疲劳剂PAPI应用于支撑胶,混炼胶的门尼粘度降低,焦烧时间延长;硫化胶的拉伸强度和拉断伸长率提高,压缩疲劳温升降低,耐屈挠性能大幅提高;可提高缺气保用轮胎的安全性。

The quality of anti-fatigue additive PAPI and its application in the support compound of runflat tire were investigated.PAPI contained polyfunctional maleimide compound having multiple benzene ring structure which could facilitate the dispersion of carbon black and participate in the cross-linking reaction of rubber vulcanization through Alder-Ene reaction.The results showed that,by using PAPI in the support compound,the Mooney viscosity of the compound was reduced,the scorch time was prolonged,the tensile strength and elongation at break of the vulcanizate were improved,the compression fatigue temperature rise was reduced,the flexing resistance was improved greatly,and the safety of run-flat tire was improved.