发泡与硫化体系的匹配对硅橡胶泡沫材料性能的影响  

Effects of match between foaming and vulcanization system on properties of silicone rubber foam materials

作　　者：李刚[1] 孟凡磊[1] 马凤国[1] LI Gang MENG Fan-lei MA Feng-guo(Key Laboratory of Rubber-Plastics of Ministry of Education, Qingdao University of Science ＆ Technology, Qingdao 266042, Chin)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2017年第2期143-146,共4页China Synthetic Rubber Industry

基　　金：四川省科技支撑计划资助项目(2015 GZ 0359)

摘　　要：研究了发泡剂H与尿素脂(BK)的质量比及用量、硫化剂过氧化苯甲酰(BPO)/过氧化二异丙苯(DCP)的质量比和硫化工艺对硅橡胶泡沫材料的表观密度及拉伸强度的影响。结果表明,当发泡剂H/BK的质量比为10.0/6.0、H的用量为10.0份、硫化剂BPO/DCP的质量比为0.8/4.0时,硅橡胶泡沫材料的表观密度小,发泡效果好。相比于一段硫化工艺,采用二段硫化工艺有助于提高材料的硫化程度,增加材料的拉伸强度及泡孔的稳定性。The effects of mass ratio and amount of foaming agent H/urea cream （BK）, mass ratio of benzoyl peroxide （BPO）/dicumyl peroxide（DCP）, and vulcanization process on apparent density and tensile strength of silicone rubber foam materials were investigated. The results showed that the apparent density of silicone rubber foam materials was small and foaming effect got better when the mass ratio of foaming agent H/BK was10. 0/6. 0, the amount of H was 10. 0 phr and the mass ratio of curing agent BPO/DCP was 0. 8/4. 0. Compared with one-step vulcanization process, two-step vulcanization process was condu- cive to improve the degree of cure, tensile strength and the sta- bility of foams of the silicone rubber foam materials.

关 键 词：发泡体系 硫化体系 硅橡胶泡沫 表观密度 拉伸强度 发泡效果 

分 类 号：TQ333.93[化学工程—橡胶工业]