国产IIR在自行车内胎中的应用

Application of domestic IIR in bike inner tube

调整自行车IIR内胎配方和混炼工艺以改善国产IIR1 75 1胶料易粘后辊和半成品胎坯挺性不足等问题。试验配方中并用EPDM和弹性填充剂 ,胶料门尼粘度、硫化速度和混炼性能得到提高 ,过滤和挤出工艺性能得到改善。采用试验配方生产的自行车内胎性能良好 ,达到国家标准要求 ;国产IIR1 75 1完全可以替代进口IIR应用于自行车内胎胶中。

The formula and mixing procedure of IIR inner tube compound for bike were modified to prevent the domestic IIR1751 compound from sticking to back roll of mill and the green innertube from less stiffness.The test results showed that the Mooney viscosity,mixing behavior and curing rate increased,and the filtering and extrudability improved by blending EPDM and an elastic filler in the test compound.The performance of bike inner tube produced with the test compound met the requirements of the relevant national standard;and the domestic IIR1751 could be used in bike inner tube instead of the imported IIR.