CAJ | 학술논문

以含氢硅油、烯丙醇聚醚和烯丙基聚氧乙烯聚氧丙烯甲基醚为原料,在催化剂氯铂酸作用下,合成了不同结构聚醚改性硅油,用红外光谱、核磁共振氢谱对其结构进行表征.单因素试验结果表明：在95℃、7 h、催化剂用量20μg/g条件下,Si-H转化率可达93.6%.n(烯丙醇聚醚)∶n(烯丙基聚氧乙烯聚氧丙烯甲基醚)=4∶1时,改性硅油水溶液表面张力为28.6 mN/m,浊点为24℃.将改性硅油用作消泡剂并测试了其消泡、抑泡性能.
이함경규유、희병순취미화희병기취양을희취양병희갑기미위원료,재최화제록박산작용하,합성료불동결구취미개성규유,용홍외광보、핵자공진경보대기결구진행표정.단인소시험결과표명：재95℃、7 h、최화제용량20μg/g조건하,Si-H전화솔가체93.6%.n(희병순취미)∶n(희병기취양을희취양병희갑기미)=4∶1시,개성규유수용액표면장력위28.6 mN/m,탁점위24℃.장개성규유용작소포제병측시료기소포、억포성능.
Different structures of polyether modified silicone defoamers were prepared by polyhydrosili-cone oil, al yl alcohol polyether and al yl polyoxyethylene polyoxypropylene methylether, using chloroplatinic ac-id as the catalyst. The chemical structure was characterized by infrared spectrum (IR) and proton nuclear mag-netic resonance (1HNMR). The results of single factor experiments showed that under the conditions of 95 ℃, 7 h, and catalyst dosage of 20 μg/g, the Si-H conversion rate could reach 93.6%. When the molar ratio of al-lyl alcohol polyether and al yl polyoxyethylene polyoxypropylene methylether was 4∶1, the surface tension of modified silicone oil aqueous solution was 28.6 mN/m and the cloud point achieved 24 ℃. The modified sili-cone oil was used as defoamer and the defoaming performance were tested.