CAJ | 학술논문

采用两步法，以双酚A型氰酸酯和双酚A型环氧树脂为主要原料制备了一种新型的氰酸酯／环氧树脂泡沫塑料。利用傅里叶变换红外光谱、扫描电子显微镜、动态热机械分析仪、差示扫描量热分析和热失重分析等分别对氰酸酯／环氧树脂泡沫塑料的化学结构、泡沫泡孔结构和热力学性能进行了表征。结果表明，氰酸酯／环氧树脂泡沫已固化完全，观察不到2272 cm–1／2236 cm–1处的氰酸酯基团吸收峰和913 cm–1处的环氧基团吸收峰。氰酸酯／环氧树脂泡沫塑料为闭孔结构，泡孔均匀且基本上呈规则的球形；力学性能优异，比压缩强度为10.22 MPa · cm3／g；玻璃化转变温度为223℃，失重5%的分解温度为309℃，具有优良的耐热性。
채용량보법，이쌍분A형청산지화쌍분A형배양수지위주요원료제비료일충신형적청산지／배양수지포말소료。이용부리협변환홍외광보、소묘전자현미경、동태열궤계분석의、차시소묘량열분석화열실중분석등분별대청산지／배양수지포말소료적화학결구、포말포공결구화열역학성능진행료표정。결과표명，청산지／배양수지포말이고화완전，관찰불도2272 cm–1／2236 cm–1처적청산지기단흡수봉화913 cm–1처적배양기단흡수봉。청산지／배양수지포말소료위폐공결구，포공균균차기본상정규칙적구형；역학성능우이，비압축강도위10.22 MPa · cm3／g；파리화전변온도위223℃，실중5%적분해온도위309℃，구유우량적내열성。
A new type of cyanate/epoxy foam with bisphenol-A dicyanate ester prepolymer and diglycidyl ether of bisphenol-A as main materials was successfully prepared through a two-step process. The chemical structure,morphology and size of cell,thermal and mechanical properties of the foam were characterized by Fourier transform infrared spectroscopy(FTIR),scanning electron microscope,dynamic mechanical analysis,differential scanning calorimeter and thermal gravimetric analysis,respectively. The results show that the cyanate/epoxy foam is cure completely,and the characteristic peak of the–OCN group (2 272 cm–1/2 236 cm–1) and epoxide group (913 cm–1) are not observed on FTIR spectrum. The foam has relatively uniform closed cell and all the cells can be clearly observed and the cells are almost sphere. The foam has excellent mechanical properties,and the specific compressive strength is 10.22 MPa · cm3/g. Glass transition temperature is 223℃and temperature of 5wt%weight loss is 309℃, which reveals the excellent thermal properties.