| 脱水缩聚对由硅酸钠制备的MQ硅树脂羟基含量的影响 |
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| 引用本文： | 周灿璨,施英,史莉,李程,张松林,丁玉强.脱水缩聚对由硅酸钠制备的MQ硅树脂羟基含量的影响[J].合成树脂及塑料,2012,29(2):42-44. |
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| 作者姓名： | 周灿璨 施英 史莉 李程 张松林 丁玉强 |
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| 作者单位： | 1. 江南大学化学与材料工程学院,江苏省无锡市,214122
2. 国星光电有限公司,广东省佛山市,528000 |
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| 摘 要： | 采用硅酸钠有机化法制备MQ硅树脂,经过脱水缩聚降低其羟基含量,并用容量法定量分析.研究了催化剂用量、脱水缩聚时间及温度对MQ硅树脂羟基含量的影响.脱水缩聚能够明显降低MQ硅树脂的羟基含量,并可控制其质量分数为1％～2％.脱水缩聚最佳工艺条件:时间为4h,催化剂为2 g KOH配制成质量分数为50％的溶液,温度为90～100℃.
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| 关 键 词： | 硅树脂 羟基含量 脱水缩聚 硅酸钠 |
Influence of dehydration polycondensation on hydroxyl content of MQ silicone resin by organization of sodium silicate |
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| Zhou Cancan
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Shi Ying
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Shi Li
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Li Cheng
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Zhang Songlin
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Ding Yuqiang.Influence of dehydration polycondensation on hydroxyl content of MQ silicone resin by organization of sodium silicate[J].China Synthetic Resin and Plastics,2012,29(2):42-44. |
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| Authors: | Zhou Cancan Shi Ying Shi Li Li Cheng Zhang Songlin Ding Yuqiang |
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| Affiliation: | 1 (1.School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China; 2.NationStar Optoelectronics Co.,Ltd,Foshan 528000,China) |
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| Abstract: | MQ silicone resin was prepared with process of sodium silicate organization.The resin’s hydroxyl content was diminished via dehydration polycondensation and was determined by volumetric method.The influences of the catalyst amount,time and temperature of the dehydration polycondensation on the hydroxyl content of the MQ silicone resin were studied.The dehydration polycondensation could significantly decrease the hydroxyl content of the MQ silicone resin and control it in the range of 1%-2% by mass.The optimum conditions of the dehydration polycondensation involved: temperature 90-100 ℃,time 4 hours,and 2 g KOH catalyst that was prepared into solution with concentration of 50%. |
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| Keywords: | silicone hydroxyl content dehydration polycondensation sodium silicate |
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