引用本文:
黄志镗, 邓先模. 苯酚甲醛环氧树脂及间苯二酚甲醛环氧树脂的制备及其性能[J]. 高分子学报,
1964, 6(1): 36-41.
Citation: HUANG CHIH-TANG, DENG HSIEN-MU. THE PREPARATION AND PROPERTIES OF EPOXYLATED NOVOLAC RESINS[J]. Acta Polymerica Sinica, 1964, 6(1): 36-41.
Citation: HUANG CHIH-TANG, DENG HSIEN-MU. THE PREPARATION AND PROPERTIES OF EPOXYLATED NOVOLAC RESINS[J]. Acta Polymerica Sinica, 1964, 6(1): 36-41.
苯酚甲醛环氧树脂及间苯二酚甲醛环氧树脂的制备及其性能
摘要:
合成了苯酚甲醛环氧树脂及间苯二酚甲醛环氧树脂,它们皆是多环氧化合物,较双酚-A环氧树脂含有较多的环氧基数。将它们固化后,测定了它们的温度形变曲綫及等速升温下的失重。从所得结果可以看出,在双酚-A环氧树脂、苯酚甲醛环氧树脂及间苯二酚甲醛环氧树脂中所含环氧基数是递增的,固化后所得塑料的交联程度亦随着增加,玻璃化转变温度随交联程度增加而增加,在高弹态时的形变值则随着而减少。由于它们之间键的类型是相同的,它们的开始分解温度很相接近,亦即热稳定性是相似的。
English
THE PREPARATION AND PROPERTIES OF EPOXYLATED NOVOLAC RESINS
Abstract:
Two epoxylated novolacs based on phenol-formaldehyde and resorcinol-formaldehyde condensation products respectively were synthesized． Both of them contained more than two epoxy groups per molecule．After curing with various curing agents，the deformation under constant lpad and the weight loss at elevated temperatures of the cured resin were measured． It was proved that with an increase in the number of functionality present in the resin，the degree of cross linking was increased． As a consequence，the cured resin showed higher glass transition temperature and smaller deformation in high elastic state．Their high temperature performance was thus better than similar system based on the diglycidyl ether of bisphenol A resin．
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