摘要
合成了一种耐湿热性能优异的环氧树脂9,9-二[4-(2,3-环氧丙氧基)苯基]芴,通过对环氧化反应影响因素的讨论确定了最佳的环氧化反应条件,使产物环氧值达到了理论值的97%。确定了纯的9,9-二[4-(2,3-环氧丙氧基)苯基]芴环氧树脂的固化工艺,并对其树脂浇注料的力学性能进行了评测。为研究9,9-二[4-(2,3-环氧丙氧基)苯基]芴对其它环氧树脂体系湿热性能的影响,对9,9-二[4-(2,3-环氧丙氧基)苯基]芴/AG-80树脂体系的吸水率进行了测定,并比较了该体系吸水前后玻璃化转变温度和模量的变化,从而证明了9,9-二[4-(2,3-环氧丙氧基)苯基]芴对提高环氧树脂耐湿热性能的作用。
A kind of highly moisture-resistant epoxy resin, 9,9-bisfluorene (Ⅱ), was synthesized. The optimal epoxidizing condition was obtained by studying the influence of different factors in the reaction, s uch as the amount of the reactants and their concentration, the amount of the c atalyzer, the reaction temperature and time. As a result the epoxy value of the products reached 97% of the calculated value. The mechani cal properties of the cured pure Ⅱ resin were studied. The water-absorbance, t he glass transfer temperature and the module of the pure Ⅱ and the Ⅱ/AG-80 mixtures before and after absorbing water were investigated. The results indicate that the water-absorbance of the resin mixt ures is reduced by the addition of Ⅱ, and Tg and E′ remain co mparatively high after absorbing water compared with the pure AG-80. The additi on of Ⅱ could improve the hot-wet property of AG-80.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第4期81-87,共7页
Acta Materiae Compositae Sinica
