高温发泡用酚醛树脂增稠机理及固化行为研究  

Study on Thickening Mechanism and Curing Behavior of Phenolic Resins Foaming on High-temperature

作　　者：李丽君[1] 方兰[1] 刘胜平[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《哈尔滨理工大学学报》1999年第4期83-86,共4页Journal of Harbin University of Science and Technology

基　　金：黑龙江省自然科学基金!B9808

摘　　要：以弱酸性盐催化体系，加入一定量的合羧基化合物，合成了适于高温发泡的酚醛树脂．利用红外分析技术及Brabender转矩流变仪等方法研究了树脂的增稠体系、增稠机理及固化行为．结果表明：采用弱酸性增稠体系（B2O3／ZnO，即B2O3与ZnO的质量比为4：1时）的增稠效果最佳，它是通过与树脂分子间形成共价键和配位键使体系粘度增大的，该体系对树脂固化有促进作用．Phenolic resins foaming on high-temperature were condensated by weak acidic saltcatalyst and adding carboxylic compound. The thickening system, thickening mechanism andcuring behaviour had been studied by infra red spectrum anylysis and Brabender plaste-corderrheometers. The results show that the best thickening effect can be obtained when the thickeningsystem of B2O3/ZnO is adopted, of which the mass ratio is 4:1, and which has promotive effecton curing of phenolip resin.

关 键 词：增稠 固化 酚醛树脂 泡沫塑料 高温发泡 

分 类 号：TQ328[化学工程—合成树脂塑料工业]