有机硅改性酚醛树脂热稳定性的研究  

STUDY ON THE THERMAL STABILITY OF ORGANOSILICON-PHENOLIC RESIN

作　　者：周重光[1] 李桂芝[1] 巩爱军 

机构地区：[1]山东大学化学系,山东济南250100

出　　处：《高分子材料科学与工程》2000年第1期164-165,168,共3页Polymer Materials Science & Engineering

摘　　要：用热失重法研究了有机硅改性酚醛树脂的热稳定性和烧蚀成碳率。结果表明 ,各种因素的影响程度依次为甲醛补加量 ,苯酚 /甲醛比值及有机硅用量。用动态力学性能分析仪考察了树脂的固化条件。改进后的酚醛树脂在氮气中 82 0℃的烧蚀成碳率可超过 70 %。The phenolic resin with excellent mechanic properties, thermal stability and burning carbonization at high temperature was used for the burning resin. For improving the heat resistance and burning carbonization of phenolic resin, in this paper, the linear phenolic resin was grafted with organosilicon oligomer, then transformed into thermosetting resin in the presence of the alkalinous catalyst. The thermal stability and burning carbonization of organosilicon phenolie resin were studied by TG analysis. The curing condition of the resin was determined by the torsional braid analysis. The result shows the remainder weight of the modified resin on TG analysis in nitrogen at 820 ℃ is higher than 70%.

关 键 词：有机硅 酚醛树脂 热稳定性 改性 

分 类 号：TQ323.106[化学工程—合成树脂塑料工业] TQ323.104