蓖麻油的改性及其在水包油型混凝土脱模剂中的应用  

Modification of castor oil and its application in oil-in-water concrete release agent

作　　者：孙义明 王福瑶[1,2] 梅捷 杨俊伟 梁冠杰 冉宝清 SUN Yiming;WANG Fuyao;MEI Jie;YANG Junwei;LIANG Guanjie;RAN Baoqing(School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China;Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学材料与化学工程学院,武汉430068 [2]湖北工业大学绿色轻工材料湖北省重点实验室,武汉430068

出　　处：《中国油脂》2020年第8期76-80,共5页China Oils and Fats

摘　　要：蓖麻油具有羟值高、低温稳定性好和摩擦系数低等优点。使用佛尔酮二异氰酸酯(IPDI)和硅烷偶联剂KH-550对蓖麻油进行改性,以提高其脱模效果,配合含氢硅油进行乳化得到一种低成本、环境友好的新型脱模剂,并对合成产物进行红外光谱分析和乳化条件讨论。红外结果表明:成功制备了KH-550封端IPDI改性蓖麻油。将改性蓖麻油制成相应的乳液后,脱模性能测试表明:当含氢硅油质量分数为15%、m(Span-60)∶m(Tween-60)=0.43∶0.57、乳化剂质量分数为15%时,可以制得稳定性较为突出的水包油型混凝土脱模剂,且在稀释1倍的情况下脱模效果良好,符合行业标准JC/T 949—2005要求。Castor oil has the advantages of high hydroxy value, good low temperature stability and low coefficient of friction. Castor oil was modified with isophorone diisocyanate(IPDI) and silane conjugate agent KH-550 to improve its release effect, and it was emulsified with hydrogen-containing silicone oil to obtain a low-cost, environmentally friendly new release agent. The synthetic products were analyzed by infrared spectroscopy and the emulsification conditions were discussed. The infrared spectroscopy results showed that the KH-550 terminal IPDI modified castor oil was successfully prepared, then it was prepared into the corresponding emulsion, the release performance test showed that under the conditions of the mass fraction of hydrogen-containing silicone oil 15%, m(Span-60)∶m(Tween-60)=0.43∶0.57 and the mass fraction of the emulsifier 15%, oil in water concrete release agent with outstanding stability was obtained and in the case of dilution doubled the release effect was good, which could meet the requirement of industry standard JC/T 949—2005.

关 键 词：混凝土脱模剂 蓖麻油 硅烷偶联剂 乳化 

分 类 号：TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程] TU528[轻工技术与工程—食品科学与工程]