摘要
In order to improve the toughness of the cured aromatic tetrafunctional epoxy resins,a dimer carboxylic acid named dimer fatty acid(DFA)was used to modify an aromatic tetrafunctional epoxy,N,N,N',N'-tetraglycidyl-2,2-bis[4-(4-aminophenoxy)phenyl]propane(TGBAPP).The curing behaviors of DFATGBAPP/MNA(methyl nadic anhydride)systems were studied by differential scanning calorimetry(DSC)method.And the thermal properties of the cured epoxy resin were investigated with the thermo-gravimetric analysis(TGA)and dynamic mechanical analysis(DMA).Besides,the toughness was characterized with the impact strength tested by charpy impact testing.The results indicated that the modification would improve the curing reactions,and the curing temperatures were decreased with the increasing content of DFA.The thermal properties were not influenced obviously,and the toughness could be improved when the epoxy resin was modified with DFA.
In order to improve the toughness of the cured aromatic tetrafunctional epoxy resins, a dlmer rarboxylic acid named dlmer fatty acid （DFA） was used to modify an aromatic tetrafunctional epoxy, N, N, N＇, N＇-tetraglycidyl-2,2-bis [ 4-（ 4-aminophcuoxy ） phenyl ] propane （TGBAPP）. The curing behaviors of DFA- TGBAPP/MNA （ methyl nadic anhydride） systems were studied by differential scanning calorimetry （DSC） method. And the thermal properties of the cured epoxy resin were investigated with the thermo-gravimetric analysis （TGA） and dynamic mechanical analysis （DMA）. Besides, the toughness was characterized with the impact strength tested by charpy impact testing. The results indicated that the modification would improve the curing reactions, and the curing temperatures were decreased with the increasing content of DFA. The thermal properties were not influenced obviously, and the toughness could be improved when the epoxy resin was modified with DFA.
基金
Shanghai Leading Academic Discipline Project,China(No.s30107)
the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning,China
the Project of Shanghai Science and Technology Committee,China(No.12520500300)
关键词
改性环氧树脂
二聚脂肪酸
固化行为
DFA
热性能
多功能
夏比冲击试验
差示扫描量热法
curing behavior
thermal property
N, N, N＇, N＇- telraglycidyl-2, 2-bis [ 4-（ 4-aminophenoxy ） phenyl ] propane （TGBAPP）
dimer fatty acid （ DFA）
toughen
