Processable polyimide resins and their composites for long-term application at 300 ℃
A series of processable and high-temperature resistant polyimide resins terminated with 4-phenylethynyl phthalic anhydride were synthesized by PMR (for in situ polymerization of monomer reactants) using isopropyl alcohol as esterifying agent. The resin solution stored at room temperature for sixteen...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2023-09-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000828 |
| _version_ | 1797335423079415808 |
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| author | HU Hai MENG Xiangsheng KE Hongjun WANG Xianwei LI Xianming GONG Dirong WANG Zhen |
| author_facet | HU Hai MENG Xiangsheng KE Hongjun WANG Xianwei LI Xianming GONG Dirong WANG Zhen |
| author_sort | HU Hai |
| collection | DOAJ |
| description | A series of processable and high-temperature resistant polyimide resins terminated with 4-phenylethynyl phthalic anhydride were synthesized by PMR (for in situ polymerization of monomer reactants) using isopropyl alcohol as esterifying agent. The resin solution stored at room temperature for sixteen weeks has no solid precipitation, and the viscosity of the solution does not change significantly, which shows good storage stability at room temperature. The minimum melt viscosity of the imide oligomers is less than 300 Pa·s, which is suitable for compression moulding or autoclaved process. The cured polyimides exhibit extremely high glass transition temperatures (Tg) up to 462℃. The flexural strength and modulus of T300/PMR-PE-2 carbon fiber composite are 963 MPa and 53 GPa, respectively. The inter-laminar shear strength of the composite is 56 MPa. Moreover, the composite can maintain no lower than 66% of their room temperature mechanical properties at 300℃. After isothermal aging in air atmosphere for 500 h at 300℃, the mass loss of the composite is only 0.96%, meanwhile, the composite retention rate maintains 72% of its room temperature flexural strength and 98% of its room temperature inter-laminar shear strength, which demonstrates its excellent thermal-oxidative aging resistance. |
| first_indexed | 2024-03-08T08:36:53Z |
| format | Article |
| id | doaj.art-f8b4bae118d0469fb1882825177a5854 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-03-08T08:36:53Z |
| publishDate | 2023-09-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-f8b4bae118d0469fb1882825177a58542024-02-02T00:46:49ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812023-09-0151918319110.11868/j.issn.1001-4381.2022.00082820230919Processable polyimide resins and their composites for long-term application at 300 ℃HU Hai0MENG Xiangsheng1KE Hongjun2WANG Xianwei3LI Xianming4GONG Dirong5WANG Zhen6School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315021, Zhejiang, ChinaLaboratory of Polymer and Composite Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, ChinaZhejiang Qinghe Advanced Material Technology Co., Ltd., Taizhou 318000, Zhejiang, ChinaLaboratory of Polymer and Composite Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, ChinaAerospace Institute of Special Materials and Technology, Beijing 100074, ChinaSchool of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315021, Zhejiang, ChinaLaboratory of Polymer and Composite Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, ChinaA series of processable and high-temperature resistant polyimide resins terminated with 4-phenylethynyl phthalic anhydride were synthesized by PMR (for in situ polymerization of monomer reactants) using isopropyl alcohol as esterifying agent. The resin solution stored at room temperature for sixteen weeks has no solid precipitation, and the viscosity of the solution does not change significantly, which shows good storage stability at room temperature. The minimum melt viscosity of the imide oligomers is less than 300 Pa·s, which is suitable for compression moulding or autoclaved process. The cured polyimides exhibit extremely high glass transition temperatures (Tg) up to 462℃. The flexural strength and modulus of T300/PMR-PE-2 carbon fiber composite are 963 MPa and 53 GPa, respectively. The inter-laminar shear strength of the composite is 56 MPa. Moreover, the composite can maintain no lower than 66% of their room temperature mechanical properties at 300℃. After isothermal aging in air atmosphere for 500 h at 300℃, the mass loss of the composite is only 0.96%, meanwhile, the composite retention rate maintains 72% of its room temperature flexural strength and 98% of its room temperature inter-laminar shear strength, which demonstrates its excellent thermal-oxidative aging resistance.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000828processablehigh temperature resistancepolyimide resincarbon fiber compositeisothermal aging |
| spellingShingle | HU Hai MENG Xiangsheng KE Hongjun WANG Xianwei LI Xianming GONG Dirong WANG Zhen Processable polyimide resins and their composites for long-term application at 300 ℃ Cailiao gongcheng processable high temperature resistance polyimide resin carbon fiber composite isothermal aging |
| title | Processable polyimide resins and their composites for long-term application at 300 ℃ |
| title_full | Processable polyimide resins and their composites for long-term application at 300 ℃ |
| title_fullStr | Processable polyimide resins and their composites for long-term application at 300 ℃ |
| title_full_unstemmed | Processable polyimide resins and their composites for long-term application at 300 ℃ |
| title_short | Processable polyimide resins and their composites for long-term application at 300 ℃ |
| title_sort | processable polyimide resins and their composites for long term application at 300 ℃ |
| topic | processable high temperature resistance polyimide resin carbon fiber composite isothermal aging |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000828 |
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