低成本高性能超分子/弹性体轮胎气密材料制备关键技术及应用

In this project, layered double hydroxides (LDHs) with special two-dimension supermolecule structure were compound with universal elastomers to prepare a novel tire composite with high performance.Some critical technologies for the novel composite, such as preparation of magnesium-based LDHs(Mg-LDHs) with two-dimension supermoleculestructure and water-phase compound of Mg-LDHs/elastomer composite, have been developed. The novel supermolecule Mg-LDHs/elastomer composite has the advantages of low cost and high performance, and can replace the traditional carbon black (CB) reinforced rubber and montmorillonite-reinforced rubber to be applied in the inner tube and inner liner of the tires.

本项目利用LDHs特殊的二维超分子结构特点，与通用弹性体材料进行复合，通过镁基二维超分子LDHs制备、Mg-LDHs/弹性体水相乳液复合控制等系列关键技术的深入研究，开发低成本高性能超分子/弹性体轮胎气密材料，替代传统炭黑增强橡胶和蒙脱土/橡胶复合材料，并实现在轮胎内胎、内衬层中的应用。

轮胎承载着现代工业与社会的运行与发展，全世界范围内的轮胎需求持续增长。我国轮胎产量已居世界第一，但与国际先进轮胎企业相比，国产高附加值轮胎产品还不多，严重制约了国际竞争力和轮胎行业的可持续发展。由轮胎内胎或气密层赋予的轮胎空气保压性能对轮胎滚动阻力有着重要影响，轮胎气压损失 25%，将使轮胎滚动阻力增加 16.4％，从而使油耗大幅增加。因此开发高性能高隔气轮胎气密材料对轮胎安全和节能减排具有重要意义。本项目利用LDHs特殊的二维超分子结构特点所带来的几何效应和粘滞作用，与通用橡胶材料进行复合，突破了系列关键技术，开发了低成本、高阻气弹性体基复合材料，替代了传统炭黑增强橡胶和粘土/弹性体复合材料，并实现了在轮胎内胎、内衬层中的应用评价，取得了良好效果。