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Matrix resin with excellent toughness finds extensive applications in structural material fields recently. In this article, phthalazinone‐bearing copoly(biphenyl ether nitrile) (PPBEN) was synthesized, followed by solution blending with commercial benzoxazine resins to enhance their toughness. The relationship between loading amount of PPBEN and combined performance of the blend system was systematically...
In this paper, a novel soluble copoly(aryl ether nitrile) containing phthalazinone and biphenyl moieties (PPBEN) was synthesized for the first time to improve the impact resistance of tetraglycidyl 4,4'‐diaminodiphenylmethane epoxy resin cured with 4,4‐diaminodiphenylsulfone. Then a series of blends were prepared via solution blending with different contents of PPBEN. The thermal and mechanical properties...
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