Study on the properties of liquid silicone rubber with different foaming agents during the foaming and addition molding process
作者：Zhang Jie, Zhang Hong, Chang Shiwen
中國分類(lèi)號：TQ330.387
文獻標識碼：B
文章標識碼：1009-797X (2025)12-0042-06
關(guān)鍵詞：addition-type liquid silicone rubber; foaming agent; foamed silicone rubber; foaming ratio; tensile strength
摘要
The addition-type liquid silicone rubber was foamed using physical foaming agents, sodium bicarbonate as a foaming aid, and hollow glass microspheres, respectively, to obtain foamed silicone rubber. This paper deeply investigated the effects of three foaming aids and their different dosages on the foaming effect, and conducted characterization and testing of the structure and properties of the successfully prepared foamed silicone rubber. The research results showed that the foaming effect of the foamed silicone rubber prepared using physical foaming agents was more ideal, and medium-foaming foam materials could be prepared; the tensile strength and elongation increased with the increase in the density of the foamed silicone rubber; the pressure during molding has a significant impact on the foaming effect, and the foaming ratio increased as the pressure decreased.