作　　者： ; ;

机构地区： 华南热带作物产品加工设计研究所设计室

出　　处： 《应用化学》 1999年第2期111-112,共2页

摘　　要： 与天然橡胶（ＮＲ）相比，环氧化天然橡胶（ＥＮＲ）具有良好的耐油性和气密性［１，２］，并由于环氧基团而有一定的极性，同其它高聚物的相容性较好．通过环氧基团的二次反应，ＥＮＲ分子链可接上其它的功能团，满足一些特殊的用途［３，４］．对于ＥＮＲ的力学性能、共... The thermal oxidative and thermal aging behaviour of epoxidized natural rubber(ENR) have been studied by FTIR. The results showed that the thermal oxidative aging reaction of ENR in air is an autocatalytic oxidation, the aging destruction occurrs in the epoxy and carboncarbon double bonds of the ENR molecule and the products of aging are alcohols, aldehydes, ketones, carboxylic acids and esters. The destruction of double bonds is more serious than that of epoxy bonds in the earlier stage, but in the later stage the destruction occurs mainly in epoxy bonds. The thermal aging of ENR in vacuum is also an autocatalytic reaction, the products of aging are similar to that after thermal oxidative aging, but the destruction of epoxy bonds always takes place at first.

关 键 词： 环氧化天然橡胶 热老化 天然橡胶

领　　域： [化学工程]