一种有机硅消泡剂的制备与应用  

Preparation and Application of a New Kind of Silicone Defoamer

作　　者：王安琪[1] 郭睿[1] 郑淑华[1] 乔宇[1] 张慧月[1] 白万乔[1] 窦尹辰[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《纸和造纸》2013年第5期52-55,共4页Paper and Paper Making

摘　　要：以含氢硅油、烯丙基聚醚酯和烯丙基聚醚为原料,异丙醇为溶剂,在氯铂酸催化剂作用下,合成了一种有机硅消泡剂——聚醚酯、聚醚共改性聚硅氧烷。用红外光谱(IR)和核磁共振氢谱(1HNMR)表征了其结构,并通过单因素实验考察了原料配比、催化剂用量、反应温度对Si-H键转化率的影响。结果表明:在反应温度为90℃,硅氢与双键摩尔比n(Si-H):n(C=C)为1:1.2,氯铂酸催化剂用量为20μg.g-1,反应时间为5.5h的工艺条件下,转化率可达92.4%,应用测试表明其消抑泡性能优于市售同类产品。A new kind silicone defoamer, allyl-poly （ether-ester） and allyl-ployether modified silicone defoamer, were prepared from polyhydrosiloxane, poly （ether-ester）, polyether in the presence of platinum-acid catalyst. The chemical structure was characterized by infrared spectrum （IR） and proton nuclear magnetic resonance （1HNMR）. The results showed that the optimal conditions were as follows： reaction temperature is 90℃, the molar ratio of Si-H to carbon double-linked is 1：1.2, the amount of catalyst is 20μg.g-1, and reaction time is 5.5 h. Its defoaming and foam suppression performance was superior to that of common commercial product.

关 键 词：烯丙基聚醚 烯丙基聚醚酯 含氢硅油 消泡剂 

分 类 号：TQ423.95[化学工程]