Self-healing and reprocessable bismaleimide-diamine thermosets containing disulfide linkages

被引：6

作者：

Kitagawa, Shogo ^{[1
]}

Ozawa, Masahiro ^{[1
]}

Shibata, Mitsuhiro ^{[1
]}

机构：

[1] Chiba Inst Technol, Fac Engn, Dept Appl Chem, 2-17-1 Tsudanuma, Narashino, Chiba 2750016, Japan

来源：

POLYMER | 2023年 / 278卷

关键词：

Self-healing materials; Thermosetting bismaleimide resins; Disulfide metathesis; Bis(2-maleimidoethyl) disulfide; Jeffamine (R); COMPOSITES; NETWORKS; BOND;

D O I：

10.1016/j.polymer.2023.126008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mixtures of bis(2-maleimidoethyl) disulfide (BMIEDS), 4-aminophenyl disulfide (APDS), and Jeffamine (R) ED-600 (JA, an aliphatic polyether diamine) at a maleimide/NH2 ratio of 2/1 were prepolymerized at 170 degrees C and then compression-molded at 180 degrees C to obtain the cured products (BMIEDS-APDS-JAs). Similarly, BMIEDS/JA, bis(4-meleimidophenyl) disulfide (BMIPDS)/APDS/JA and BMIPDS/JA cured products (BMIEDS-JA, BMIPDS-APDSJAs, and BMIPDS-JA) were prepared. The Fourier-transform infrared spectroscopy (FT-IR) of the cured products revealed that the maleimide/amine Michael addition reaction proceeded almost completely. The glasstransition temperature (T-g) and mechanical strength of the cured products decreased with the increase in JA weight fraction, and those of the BMIEDS-based cured products were lower than those of the BMIPDS-cured products. The highest JA fraction BMIEDS-APDS-JA and BMIESD-JA were healed three times at 100 degrees C, whereas none of the BMIPDS-based cured products exhibited self-healing properties. However, all the BMIPDS-based cured products were reprocessed by compression molding at 180 degrees C.

引用

页数：10

共 32 条

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