将模量增强剂HMZ应用于工程机械轮胎胎面上层胶中 ,进行小配合和车间大料及成品轮胎试验。结果表明 ,在胎面上层胶中加入 2份模量增强剂HMZ ,硫化胶的邵尔A型硬度提高 3～ 4度 ,同时 30 0 %定伸应力、撕裂强度略有提高 ,而其它性能无明显变化 HMZ, a modifier, was applied to the top rubber of tire treads of construction machinery to perform the small fit and workshop bulk and finished tire tests. The results showed that adding 2 parts modifier HMZ to the tread rubber increased the Shore A hardness of the vulcanizate by 3-4 degrees, while the 30% modulus of elongation increased slightly while the tear strength slightly increased. No significant changes