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    • 2. 发明授权
    • Ultra high molecular weight polyethylene multifilament yarns, and process for producing thereof
    • 超高分子量聚乙烯复丝纱线及其制造方法
    • US08137809B2
    • 2012-03-20
    • US12933772
    • 2009-04-09
    • Roelof MarissenHarm van der WerffJoseph Arnold Paul Maria SimmelinkEvert Florentinus Florimondus De Danschutter
    • Roelof MarissenHarm van der WerffJoseph Arnold Paul Maria SimmelinkEvert Florentinus Florimondus De Danschutter
    • D02G3/00
    • D01F6/04Y10T428/2913Y10T428/2967
    • The invention relates to a gel spun, ultrahigh molecular weight polyethylene (UHMWPE) multifilament yarn characterized in that said yarn comprises individual monofilaments having a coefficient of variation of their linear density, hereafter CVintra, of less than 30%, wherein the CVintra of a monofilament was determined from linear density values corresponding to a number of 20 representative lengths randomly extracted by cutting from said monofilament and using Formula 1 wherein χi is the linear density of any one of the representative lengths extracted from the monofilament under investigation and Formula 1A is the averaged linear density over the n=20 measured linear densities of said n=20 representative lengths. The invention also relates to a gel spun UHMWPE multifilament yarn characterized in that the yarn has a coefficient of variation in linear density between the monofilaments comprising said yarn, hereafter CVinter, of less than 50%. The invention also relates to a gel spinning process of producing thereof characterized in that a chamber is present before the spinning plate such that no further partitioning of the UHMWPE solution takes place before said solution being finally partitioned into individual monofilaments by the spinning plate and in which chamber the solution has a residence time τ at a constant throughput of UHMWPE solution of at least 5 sec. The invention also relates to a rope, net, medical cable or a composite comprising the yarns of the invention.
    • 本发明涉及一种凝胶纺丝超高分子量聚乙烯(UHMWPE)复丝纱线,其特征在于所述纱线包括其线密度变异系数(以下简称CVintra)的单根单丝小于30%,其中单丝的CVintra 由对应于通过从所述单丝切割而随机提取的20个代表性长度的数目的线密度值确定,并且使用公式1,其中χi是从被研究的单丝中提取的任何代表性长度的线密度,而式1A是平均值 所述n = 20个代表性长度的n = 20个线性密度的线密度。 本发明还涉及一种凝胶纺丝UHMWPE复丝纱,其特征在于,所述纱线具有小于50%的包含所述纱线的单丝之间的线密度变化系数(以下称CVinter)。 本发明还涉及其制造的凝胶纺丝方法,其特征在于在纺丝板之前存在室,使得在所述溶液最终通过纺丝板分成单个单丝之前不再进一步分配UHMWPE溶液,其中 室中,溶液在UHMWPE溶液的恒定通量下具有至少5秒的停留时间τ。 本发明还涉及一种绳,网,医用电缆或包含本发明纱线的复合材料。
    • 7. 发明授权
    • Process for making a carbon nanotubes/ultra-high molar mass polyethylene composite fibre
    • 制造碳纳米管/超高摩尔质量聚乙烯复合纤维的方法
    • US07780888B2
    • 2010-08-24
    • US11658155
    • 2005-07-14
    • Harm van der WerffShilun RuanTongxi YuPing GaoRoelef Marissen
    • Harm van der WerffShilun RuanTongxi YuPing GaoRoelef Marissen
    • D01F6/00C08K3/02
    • B82Y30/00D01F1/10D01F6/04
    • The invention relates to a process for making a carbon nanotubes/ultra-high molar mass polyethylene (CNTs/UHPE) composite fiber comprising the steps of a) pre-treating CNTs with an acidic aqueous solution; b) making a composition containing pre-treated CNTs dispersed in a solution of UHPE in a spin solvent; and c) spinning the composition obtained into fibers; wherein step b) comprises making a dispersion of pre-treated CNTs in an alcohol, and mixing this dispersion with a mixture of UHPE and spin solvent. With this process CNTs/UHPE composite fibers showing improved tensile properties are obtained at relatively low CNTs content. A further advantage is that no or hardly any additional components, like dispersion aids, need to be added to make a stable dispersion of CNTs in the spin composition. The invention also relates to a CNTs/UHPE composite fiber obtainable by the process according to the invention, and to semi-finished or end-use articles containing said composite fiber.
    • 本发明涉及一种制备碳纳米管/超高摩尔质量聚乙烯(CNTs / UHPE)复合纤维的方法,包括以下步骤:a)用酸性水溶液预处理CNT; b)制备含有预处理的CNT分散在UHPE在旋转溶剂中的溶液中的组合物; 和c)将得到的组合物纺丝成纤维; 其中步骤b)包括将预处理的CNT分散在醇中,并将该分散体与UHPE和旋转溶剂的混合物混合。 通过这种方法,CNTs / UHPE复合纤维在较低的CNTs含量下得到显示出改善的拉伸性能。 另一个优点是不需要或几乎没有任何附加的组分,如分散助剂,以便使CNT在纺丝组合物中的稳定分散。 本发明还涉及通过本发明的方法获得的CNTs / UHPE复合纤维,以及含有所述复合纤维的半成品或最终用途制品。
    • 9. 发明授权
    • Optically anisotropic spinning solution comprising a mixture of P-aramid
and aliphatic polyamide, and fibers to be made therefrom
    • 包含对位芳族聚酰胺和脂肪族聚酰胺的混合物的光学各向异性纺丝溶液以及由其制成的纤维
    • US5962627A
    • 1999-10-05
    • US844820
    • 1997-04-22
    • Harm van der WerffJohannes Marinus Surquin
    • Harm van der WerffJohannes Marinus Surquin
    • D01F6/90C08G69/32C08L77/10
    • D01F6/905G02B6/02033Y10T428/2969Y10T428/2971Y10T428/31504Y10T428/31725
    • It has been found that fibers which incorporate very good mechanical properties as well as very good adhesive properties can be made from an optically anisotropic spinning solution containing a mixture of a paraphenylene groups-containing, wholly aromatic polyamide component and another polyamide component if for the para-aromatic polyamide component full or partial use is made of copolymer in which 2,6-naphthylene units are present in addition to the paraphenylene units and the other polyamide component is an aliphatic polyamide. Preferably, the weight ratio of the para-aromatic polyamide component to the aliphatic polyamide component is 95:5 to 85:15. The aromatic copolyamide containing paraphenylene and 2,6-naphthylene is preferably obtained by polymerising paraphenylene diamine (PPD) and a stoichiometric amount of a mixture composed of terephthalic acid dichloride (TDC) and 2,6-naphthylene carboxylic acid dichloride (NDC) in a molar ratio TDC:NDC of 99:1 to 80:20.
    • 已经发现,包含非常好的机械性能和非常好的粘合性能的纤维可以由包含对苯二甲酸基团的全芳族聚酰胺组分和另一种聚酰胺组分的混合物的光学各向异性纺丝溶液制成,如果对于 芳族聚酰胺组分全部或部分使用由除了对亚苯基单元之外存在2,6-亚萘基单元并且其它聚酰胺组分为脂族聚酰胺的共聚物制成。 对位芳族聚酰胺成分与脂肪族聚酰胺成分的重量比优选为95:5〜85:15。 含有对苯二甲酸和2,6-亚萘基的芳香族共聚酰胺优选通过在对苯二甲酰胺(PPD)和化学计量量的由对苯二甲酸二氯化物(TDC)和2,6-亚萘基羧酸二氯化物(NDC)组成的混合物 摩尔比TDC:NDC为99:1至80:20。