Abstract
The chemistry, mechanical and physical properties of several high temperature polyimides, polyarylene ethers and polyphenylquinoxalines are discussed. As examples, new semi-crystalline polyimides containing carbonyl and ether connecting groups exhibited glass transition temperatures (Tgs) of 215 to 247°C, crystalline melt temperatures (Tms) of 350 to 442°C, and high film properties. Polyarylene ethers derived from 9,9-bis(4-hydroxyphenyl)fluorene had Tgs of 223 to 280°C, number average molecular weights as high as 39,900 g mol−1, and good adhesive properties. Polyphenylquinoxalines containing pendent phenylethynyl groups were used to form adhesive bonds which exhibited good retention of strength to temperatures as high as 316°C.
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Hergenrother, P. Recent Advances in High Temperature Polymers. Polym J 19, 73–83 (1987). https://doi.org/10.1295/polymj.19.73
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DOI: https://doi.org/10.1295/polymj.19.73
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