Comparison of the Properties of Epoxy Resins Containing Various Trifluoromethyl Groups with Low Dielectric Constant

被引：7
|
作者：
Zhang, Yurong [1 ]
Lin, Haidan [2 ]
Dong, Kai [1 ]
Tang, Shasha [1 ]
Zhao, Chengji [1 ]
机构：
[1] Jilin Univ, Coll Chem, Key Lab High Performance Plast, Minist Educ, Changchun 130012, Peoples R China
[2] State Grid Jilin Elect Power Co, Elect Power Res Inst, Changchun 130012, Peoples R China
来源：
POLYMERS | 2023年 / 15卷 / 13期
关键词：
trifluoromethyl substitution; low dielectric constant; hydrophobicity; thermal stability; CURE REACTION; METHYL;
D O I：
10.3390/polym15132853
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of epoxy resins containing various trifluoromethyl groups were synthesized and thermally cured with diaminodiphenylmethane (DDM) and aminophenyl sulfone (DDS). All epoxy resins exhibited excellent thermal stability with the glass transition temperatures of above 128 degrees C and 5% weight loss temperatures of above 300 & DEG;C. DDS-cured epoxy resins possessed higher thermal stability than that of DDM-cured epoxy resins, while DDM-cured epoxy resins showed better mechanical, dielectric, and hydrophobic properties. Additionally, DDM-cured epoxy resins with different locations and numbers of trifluoromethyl groups showed flexural strength in the range of 95.55 similar to 152.36 MPa, flexural modulus in the range of 1.71 similar to 2.65 GPa, dielectric constant in the range of 2.55 similar to 3.05, and water absorption in the range of 0.49 similar to 0.95%. These results indicate that the incorporation of trifluoromethyl pendant groups into epoxy resins can be a valid strategy to improve the dielectric and hydrophobic performance.
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页数：13
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