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    • 6. 发明公开
    • Process for making thermoset polyphenylene oxide/epoxy laminates
    • 维他命Zur Herstellung von Laminaten aushitzehärtbaremPolyphenyloxid / -epoxid。
    • EP0537005A1
    • 1993-04-14
    • EP92309181.3
    • 1992-10-08
    • GENERAL ELECTRIC COMPANY
    • Minnick, Michael GeraldJain, Rakesh
    • C08J5/24
    • C08J5/24C08J2363/00C08L63/00C08L71/123H05K1/0373H05K2201/0212C08L2666/22
    • Broadly, the present invention comprises a solventless process wherein blends of thermoset polyphenylene oxide and epoxy can be processed into fiber reinforced laminates, and especially laminates prepared by the Wiggins Teape process. One aspect of the present inventive process comprises blending the polyphenylene powder with a liquid epoxy material, optionally with flame retardants and catalysts, preferably in a high shear mixer at elevated temperature, e.g. in the range of about 100°-130°C. The resultant up-staged or partially-cured blend is sufficiently solidified to be granulated into a powder for Wiggins Teape processing or, optionally, conventional press processing into a fiber reinforced laminates. Resin systems thus-prepared exhibit both improved solderability resistance and improved resistance to organic solvents when compared to thermoplastic systems.
    • 广泛地说,本发明包括无溶剂方法,其中热固性聚苯醚和环氧树脂的共混物可以加工成纤维增强层压材料,特别是通过Wiggins Teape方法制备的层压材料。 本发明方法的一个方面包括将聚苯醚粉末与液体环氧材料混合,任选地含有阻燃剂和催化剂,优选在高剪切混合器中,例如高温下。 在约100-130℃的范围内。所得到的上级或部分固化的共混物充分固化,以造粒成用于Wiggins Teape加工的粉末,或任选地,常规的冲压加工成纤维增强层压材料。 如此制备的树脂体系与热塑性体系相比表现出改进的耐焊接性和改善的耐有机溶剂性。