Study on Molding Process of Ether Anhydride Type Polyimide Materials. Issue 1 (February 2020)

• Record Type: Journal Article
• Authors: Chen, Xiaoqi; Wang, Zhengzheng; Xu, Haoran; Zhou, Haijun; Zhou, Mengmeng; Li, Yantao
• Is Part Of: IOP conference series. Volume 772:Issue 1(2020)
• Publication Date: 2020-02
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/772/1/012037
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: The main molding process of ether anhydride type polyimide materials which synthesized by the main meterials of pyromellitic dianhydride (PMDA), 3, 3', 4, 4'-tetracarboxydiphthalic dianhydride (OPDA) and Diamine diphenyl ether (ODA) was researched. The effects of molding temperature, molding time and molding pressure on the tensile properties of molded products were investigated. And the effects of dianhydride ratio on the properties and molding process of ether anhydr ide type polyimide materials was discussed. Results showed that samples molded by polyimide molding powder appeared the best comprehensive performance when the molar ratio of PMDA and OPDA was 2:1, with the tensile strength of 93.5 MPa, the elongation at break of 10.1%, the vitrification transition temperature of 340 °C and the thermal decomposition temperature of 5% was 574 °C. And molding process is under that the molding temperature is 410°C, the molding pressure is 4.0Mpa and the molding time is 15min.