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公开(公告)号:US5532295A
公开(公告)日:1996-07-02
申请号:US146517
申请日:1993-11-01
CPC分类号: C08J9/32 , C08J9/0085 , C08J2379/08 , Y10T428/249953 , Y10T428/249971 , Y10T428/249974 , Y10T428/249975 , Y10T428/249976 , Y10T428/249978 , Y10T428/31721
摘要: A low-density, porous material is prepared by mixing together microballoons and an oligomeric precursor to a polyetherimide polymer. The oligomeric precursor has an initial viscosity sufficiently low that it can flow and wet the microballoons when first heated to a polymerization processing temperature, and thereafter polymerize. Fibers may be controllably incorporated into the material during processing to impart specific properties, and air may be controllably incorporated into the material during processing to further decrease its density.
摘要翻译: 通过将微球和低聚前体混合到聚醚酰亚胺聚合物中来制备低密度多孔材料。 低聚前体的初始粘度足够低,当第一次加热至聚合加工温度时,其可以流动并湿润微球,然后聚合。 纤维可以在处理过程中可控地结合到材料中以赋予特定的性质,并且空气可以在处理过程中可控制地结合到材料中以进一步降低其密度。
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公开(公告)号:US5691390A
公开(公告)日:1997-11-25
申请号:US678362
申请日:1996-03-20
CPC分类号: C08J9/32 , C08J9/0085 , C08J2379/08 , Y10T428/249953 , Y10T428/249971 , Y10T428/249974 , Y10T428/249975 , Y10T428/249976 , Y10T428/249978 , Y10T428/31721
摘要: A low-density, porous material is prepared by mixing together microballoons and an oligomeric precursor to a polyesterimide polymer. The oligomeric precursor has an initial viscosity sufficiently low that it can flow and wet the microballoons when first heated to a polymerization processing temperature, and thereafter polymerize. Fibers may be controllably incorporated into the material during processing to impart specific properties, and air may be controllably incorporated into the material during processing to further decrease its density.
摘要翻译: 通过将微球和低聚前体混合到聚酯酰亚胺聚合物中来制备低密度多孔材料。 低聚前体的初始粘度足够低,当第一次加热至聚合加工温度时,其可以流动并湿润微球,然后聚合。 纤维可以在处理过程中可控地结合到材料中以赋予特定的性质,并且空气可以在处理过程中可控制地结合到材料中以进一步降低其密度。
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