介绍了环境温湿度以及促进剂用量、酸酐用量对蜂窝增强硅橡胶基低密度烧蚀材料硬度的影响。试验发现蜂窝增强硅橡胶基低密度烧蚀材料硬度沿厚度方向呈规律变化 :从外向里材料硬度逐渐降低 ,室温存放时间长的材料硬度降低的梯度小 ;密度小的材料硬度降低梯度小 ;促进剂量多的材料硫化后材料表面硬度大 ,从外向里硬度降低梯度大。其酸酐用量最佳值为环氧树脂的 30 % (质量分数 )。 The effects of environmental temperature and humidity, accelerator dosage and anhydride dosage on the hardness of honeycomb reinforced silicone rubber based low density ablative materials were introduced. The results show that the hardness of the honeycomb reinforced silicone rubber based low-density ablative material changes regularly in the thickness direction: the hardness decreases gradually from the outside to the inside, and the hardness of the material with long storage time at room temperature decreases little; Dosage of materials after curing the surface hardness of materials, from the outside to reduce the hardness gradient. The best dosage of anhydride is 30% (mass fraction) of epoxy resin.