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    • 1. 发明授权
    • Composite materials comprising PPTA and nanotubes
    • 包含PPTA和纳米管的复合材料
    • US07534486B2
    • 2009-05-19
    • US10588160
    • 2005-03-18
    • Hanneke BoerstoelHendrik SwierengaAart Klinkhamer
    • Hanneke BoerstoelHendrik SwierengaAart Klinkhamer
    • B32B27/04
    • D01F1/02B82Y30/00D01D1/02D01F6/605Y10T428/249924Y10T428/24994Y10T428/2913Y10T428/2927Y10T428/30
    • The invention pertains to a composite material comprising PPTA (poly-p-phenyleneterephthalamide) and nanotubes having an aspect ratio of at least 100 and a cross-sectional diameter of 5 nm or less, the composite material containing up to 12 wt. % of nanotubes, obtainable by adding the nanotubes to sulfuric acid, decreasing the temperature to solidify the mixture, adding PPTA to the solid mixture, heating to above the solidifying point and mixing the mixture, and spinning, casting, or molding the mixture to the composite material.The process comprises the steps: a) adding nanotubes having an aspect ratio of at least 100 and a cross-sectional diameter of 5 nm or less to sulfuric acid at a temperature above the solidifying point of the sulfuric acid; b) decreasing the temperature to below the solidifying point of the sulfuric acid and mixing for a sufficient time to solidify the mixture; c) adding PPTA to the solid mixture; and d) heating to above the solidifying point and mixing the mixture.
    • 本发明涉及包含PPTA(聚对苯二甲酰对苯二胺)和纵横比至少为100且横截面直径为5nm或更小的纳米管的复合材料,该复合材料含有至多12wt。 通过将纳米管加入到硫酸中可获得的纳米管的百分比,降低温度以固化混合物,将PPTA加入到固体混合物中,加热到凝固点上方并混合该混合物,并将该混合物纺丝, 复合材料。 该方法包括以下步骤:a)在高于硫酸固化点的温度下,向硫酸中加入纵横比为至少100,横截面直径为5nm或更小的纳米管; b)将温度降低到硫酸的凝固点以下并混合足够的时间以固化混合物; c)向固体混合物中加入PPTA; 和d)加热到固化点上方并混合混合物。
    • 4. 发明申请
    • Composite materials comprising ppta and nanotubes
    • 包含ppta和纳米管的复合材料
    • US20070160821A1
    • 2007-07-12
    • US10588160
    • 2005-03-18
    • Hanneke BoerstoelAart KlinkhamerHendrik Swierenga
    • Hanneke BoerstoelAart KlinkhamerHendrik Swierenga
    • D04H13/00
    • D01F1/02B82Y30/00D01D1/02D01F6/605Y10T428/249924Y10T428/24994Y10T428/2913Y10T428/2927Y10T428/30
    • The invention pertains to a composite material comprising PPTA (poly-p-phenyleneterephthalamide) and nanotubes having an aspect ratio of at least 100 and a cross-sectional diameter of 5 nm or less, the composite material containing up to 12 wt. % of nanotubes, obtainable by adding the nanotubes to sulfuric acid, decreasing the temperature to solidify the mixture, adding PPTA to the solid mixture, heating to above the solidifying point and mixing the mixture, and spinning, casting, or molding the mixture to the composite material. The process comprises the steps: a) adding nanotubes having an aspect ratio of at least 100 and a cross-sectional diameter of 5 nm or less to sulfuric acid at a temperature above the solidifying point of the sulfuric acid; b) decreasing the temperature to below the solidifying point of the sulfuric acid and mixing for a sufficient time to solidify the mixture; c) adding PPTA to the solid mixture; and d) heating to above the solidifying point and mixing the mixture.
    • 本发明涉及包含PPTA(聚对苯二甲酰对苯二胺)和纵横比至少为100且横截面直径为5nm或更小的纳米管的复合材料,该复合材料含有至多12wt。 通过将纳米管加入到硫酸中可获得的纳米管的百分比,降低温度以固化混合物,将PPTA加入到固体混合物中,加热到凝固点上方并混合该混合物,并将该混合物纺丝, 复合材料。 该方法包括以下步骤:a)在高于硫酸固化点的温度下,向硫酸中加入纵横比为至少100,横截面直径为5nm或更小的纳米管; b)将温度降低到硫酸的凝固点以下并混合足够的时间以固化混合物; c)向固体混合物中加入PPTA; 和d)加热到固化点上方并混合混合物。