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    • 5. 发明授权
    • COMPOSITE MATERIALS COMPRISING PPTA AND NANOTUBES
    • 包含PPTA和纳米管的复合材料
    • EP1737905B1
    • 2007-10-24
    • EP05739601.2
    • 2005-03-18
    • Teijin Twaron B.V.
    • BOERSTOEL, HannekeSWIERENGA, HendrikKLINKHAMER, Aart
    • C08K7/24C08K7/00D01D5/04
    • 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 to12 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)和长径比为至少100且横截面直径为5nm或更小的纳米管的复合材料,所述复合材料含有至多12重量%的纳米管,可获得 通过将纳米管添加到硫酸中,降低温度以固化混合物,向固体混合物中加入PPTA,加热至高于凝固点并混合混合物,并将混合物纺丝,浇铸或模塑成复合材料。 该方法包括以下步骤:a)在高于硫酸凝固点的温度下,将具有至少100的纵横比和5nm或更小的横截面直径的纳米管添加到硫酸; b)将温度降低至低于硫酸的凝固点并混合足够时间以固化混合物; c)向固体混合物中加入PPTA; 和d)加热至高于凝固点并混合混合物。