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    • 3. 发明申请
    • LOW CREEP, HIGH STRENGTH UHMWPE FIBRES AND PROCESS FOR PRODUCING THEREOF
    • 低强度,高强度UHMWPE纤维及其制造方法
    • US20100249831A1
    • 2010-09-30
    • US12681694
    • 2008-10-06
    • Martin Pieter VlasblomRoelof R. MarissenJoseph Arnold Paul Maria J.A.P.M Simmelink
    • Martin Pieter VlasblomRoelof R. MarissenJoseph Arnold Paul Maria J.A.P.M Simmelink
    • A61B17/04D01F6/04C08F110/02
    • D01F6/04D07B1/025D07B2205/2014D07B2801/10
    • The invention relates to a process for producing gel-spun ultra high molecular weight polyethylene (UHMWPE) fibres having high tensile strengths and improved creep rates wherein the UHMWPE used in said process comprises per thousand carbon atoms between 0.1 and 1.3 methyl side groups; and between 0.08 and 0.6 of methyl end groups; and wherein the overall draw ratio (DRoverall=DRfluid×DRgel×DRsolid) is at least 7000 provided that the fluid draw ratio DRfluid=DRsp×DRag is at least 100, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air gap. The invention further relates to gel-spun UHMWPE fibres produced thereof. The gel-spun UHMWPE fibres of the invention have a tensile strength of at least 4 GPa, and a creep rate as measured at 70° C. under a load of 600 MPa of at most 6×10−7 sec−1. The gel-spun UHMWPE fibres produced thereof are useful in a variety of applications, the invention relating in particular to ropes, medical devices, composite articles and ballistic-resistant articles containing said UHMWPE fibres.
    • 本发明涉及一种制备具有高拉伸强度和改善的蠕变速率的凝胶纺丝超高分子量聚乙烯(UHMWPE)纤维的方法,其中在所述方法中使用的UHMWPE包括0.1-1.3个甲基侧基的千个碳原子; 和甲基端基的0.08和0.6之间; 并且其中总体拉伸比(DRoverall = DRfluid×DRgel×DRsolid)至少为7000,条件是流体拉伸比DRfluid = DRsp×DRag至少为100,其中DRsp是喷丝孔中的拉伸比,并且DRag是拉伸比 在气隙中。 本发明还涉及其生产的凝胶纺丝UHMWPE纤维。 本发明的凝胶纺丝UHMWPE纤维的拉伸强度为至少4GPa,在600MPa的载荷下在70℃下测定的蠕变速率为6×10-7秒-1以下。 其生产的凝胶纺丝UHMWPE纤维可用于各种应用中,本发明特别涉及包含所述UHMWPE纤维的绳索,医疗装置,复合制品和防弹制品。