The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

Citation: Qing Zhao, Xing-yi Wang, Yan-hong Hu. The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin[J]. Chinese Journal of Polymer Science, 2015, 33(10): 1359-1372. doi: 10.1007/s10118-015-1685-0 shu

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

1.
Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
2.
Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
基金项目:
This work was financially supported by the Shanghai key RD Program (No. DZ1100105).

摘要: Polyimides (PIs) with various molecular weights synthesized via the reaction of aromatic diamine monomer containing tert-butyl groups with aromatic dianhydride were highly soluble in common organic solvents and some epoxy resins at room temperature. These PIs can be incorporated in the absence of organic solvent into epoxy resin E51 with the loading below 2 wt% forming EP-PI composites. No phase separation is observed by SEM on cryogenically fractured surfaces of EP-PI composites. The PI can improve mechanical properties, especially impact strength. Adding 2 wt% PI-1.5W, the impact strength reaches to 55 kJ/m2 with the increase in tensile and flexural strengths by 14% and 3%, respectively. SEM analyses for the fracture surface suggest that PI reduces the crosslink density, improves the plasticity of epoxy resin and changes the mode of fracture from fragile to ductile. Moreover, the glass transition temperature of EP-PI composites was found to increase to a significant extent.

关键词:

English

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

1.
Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
2.
Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
Received Date: 04 March 2015
Revised Date: 30 April 2015
Available Online: 05 October 2015
Fund Project:
This work was financially supported by the Shanghai key RD Program (No. DZ1100105).

Abstract: Polyimides (PIs) with various molecular weights synthesized via the reaction of aromatic diamine monomer containing tert-butyl groups with aromatic dianhydride were highly soluble in common organic solvents and some epoxy resins at room temperature. These PIs can be incorporated in the absence of organic solvent into epoxy resin E51 with the loading below 2 wt% forming EP-PI composites. No phase separation is observed by SEM on cryogenically fractured surfaces of EP-PI composites. The PI can improve mechanical properties, especially impact strength. Adding 2 wt% PI-1.5W, the impact strength reaches to 55 kJ/m2 with the increase in tensile and flexural strengths by 14% and 3%, respectively. SEM analyses for the fracture surface suggest that PI reduces the crosslink density, improves the plasticity of epoxy resin and changes the mode of fracture from fragile to ductile. Moreover, the glass transition temperature of EP-PI composites was found to increase to a significant extent.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

English

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

English

The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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