改性氢氧化钙填充硅橡胶的制备与性能研究  

Preparation and Properties of Modified Calcium Hydroxide Filled Silicone Rubber

作　　者：王鑫 李超芹[1] WANG Xin;LI Chaoqin(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《橡胶工业》2023年第4期278-282,共5页China Rubber Industry

基　　金：山东省自然科学基金资助项目(ZR2016XJ001)。

摘　　要：通过添加改性氢氧化钙降低硫化剂双25硫化硅橡胶的气味等级,并研究改性氢氧化钙对硅橡胶硫化特性、动态力学性能和物理性能等的影响。结果表明:改性氢氧化钙会影响硅橡胶的硫化过程,吸收硫化过程中产生的副产物,促进硫化反应,增大硅橡胶的交联密度、邵尔A型硬度、定伸应力和拉伸强度;当改性氢氧化钙用量为2份时,硅橡胶的综合性能最好。The odor level of the silicone rubber vulcanized by 2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane was reduced by adding modified calcium hydroxide,and the influence of modified calcium hydroxide on the vulcanization characteristics,dynamic mechanical properties and physical properties of the silicone rubber was studied.The results showed that modified calcium hydroxide could affect the vulcanization process of the silicone rubber,absorb the by-products produced in the vulcanization process,and promote the vulcanization reaction,which resulted in higher crosslinking density,higher Shore A hardness,higher tensile stress at a give elongation and tensile strength of the silicone rubber.When the addition level of modified calcium hydroxide was 2 phr,the overall performance of the silicone rubber was the best.

关 键 词：硅橡胶 改性氢氧化钙 交联密度 气味等级 

分 类 号：TQ333.93[化学工程—橡胶工业] TQ330.387