反应性甲基苯基硅树脂储存稳定性的研究  

Study on Storage Stability of Reactive Methylphenyl Silicone Resin

作　　者：朱玉蓉 吴向荣 刘洪 胡平 李红强[1] 赖学军[1] 曾幸荣[1] 任碧野[1] ZHU Yurong;WU Xiangrong;LIU Hong;HU Ping;LI Hongqiang;LAI Xuejun;ZENG Xingrong;REN Biye(School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China;Guangdong Haoming Organic Silicon Material Co.,Ltd.,Zhaoqing 526000,China;Guangzhou Silicoats New Materials Co.,Ltd.,Guangzhou 511462,China)

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]广东皓明有机硅材料有限公司,广东肇庆526000 [3]广州市硅涂新材料有限公司,广州511462

出　　处：《有机硅材料》2023年第6期8-13,共6页Silicone Material

基　　金：广东省自然科学基金(2021A1515011722);肇庆市第四批西江创新团队项目。

摘　　要：为了提高反应性甲基苯基硅树脂(RMPSR)自身的储存稳定性,实验以氢氧化钠为中和剂去除水解过程中加入的催化剂草酸,提高反应过程中的活化能,使活性基团硅烷氧基(SiOCH_(3))的进一步反应变得困难;再通过添加抑制剂乙酰丙酮抑制SiOCH_(3)水解后的产物SiOH发生缩合以及自缩合反应,显著提高RMPSR的稳定性。通过红外分析以及对比不同状态下硅树脂的黏度与甲氧基含量来表征RMPSR的储存稳定性。结果表明,在密闭状态下,RMPSR可维持长时间的稳定性,经过NaOH和C_(5)H_(8)O_(2)处理后的RMPSR稳定性可进一步增强。此外,SiOCH_(3)的反应活性得到一定程度的保留。In order to improve the storage stability of reactive methylphenyl silicone resin(RMPSR),sodium hydroxide was used as a neutralizing agent to remove the catalyst oxalic acid in the hydrolysis process,increasing the activation energy and making no further reactions of the active group in SiOCH_(3)in the process.Then the condensation and self-condensation of SiOH hydrolyzed from SiOCH_(3)were inhibited by acetylacetone,which significantly improved the stability of RMPSR.The storage stability of RMPSR was characterized by FTIR and comparison of viscosity and methoxy content of silicone resin in different states.The results indicate that RMPSR keeps long-term stability in a closed state,and its stability can be further enhanced after treated with NaOH and C_(5)H_(8)O_(2).In addition,SiOCH_(3)still has the reactivity as well.

关 键 词：甲基苯基硅树脂 稳定性 反应性 黏度 甲氧基 

分 类 号：TQ324.21[化学工程—合成树脂塑料工业]