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1. 发明申请

US20100187716A1 METHOD FOR PRODUCING LOWER SIZE, HIGH TENACITY AND HIGH MODULUS POLYETHYLENE FIBER 有权
标题翻译：用于生产较小尺寸，高密度和高模量聚乙烯纤维的方法
公开(公告)号：US20100187716A1
公开(公告)日：2010-07-29
申请号：US12671962
申请日：2008-09-11
申请人： Nianci Yang , Yuanjun Zhang , Bo Gao , Zhiquan Wu , Mingqing Lin , Chuanqing Wu , Yong Guo , Yunbo Zhou , Haijun Lin
发明人： Nianci Yang , Yuanjun Zhang , Bo Gao , Zhiquan Wu , Mingqing Lin , Chuanqing Wu , Yong Guo , Yunbo Zhou , Haijun Lin
IPC分类号： B29C47/08
CPC分类号： D01D5/06 , D01D4/02 , D01F6/04 , D02J1/228
摘要： The present invention discloses a process for producing low-titer, high-strength and high-modulus polyethylene fibers, comprising the following steps: dissolving the ultra-high molecular weight polyethylene into paraffin oil with a low viscosity to form a spinning solution with a concentration of 3˜15%; extruding the spinning solution through a thin spinneret with at least 10 orifices having a diameter φ of 0.7˜0.8 mm and a length/diameter ratio of 10˜12, by applying a high pressure in the range of 2.5±1.0 MPa to the spinning solution, such that the fluid in the orifices is extruded at a shear rate of 200˜3 500 sec−1; and then performing a jet stretch at a deformation rate of 200˜5 000 min−1 within an air-gap of 10˜15 mm between the spinneret and the quench bath surface; feeding the jet-stretched fluid into the quench bath to form gel filaments; extracting and drying the gel filaments; and performing a multistage ultrahigh post stretch on the dried gel filaments with a stretch ratio of 15 or less. In this process, the solution is extruded at a high rate by using a spinneret with small orifice diameter, thereby achieving a high shear rate and a high deformation rate, so the present process is a novel and effective spinning process.
摘要翻译：本发明公开了一种生产低滴度，高强度，高模量聚乙烯纤维的方法，包括以下步骤：将超高分子量聚乙烯溶解在低粘度的石蜡油中，形成浓度为 3〜15％通过具有至少10个具有直径＆孔的孔的薄喷丝板挤出纺丝溶液。通过向纺丝溶液施加2.5±1.0MPa的高压，使得孔中的流体以200〜200的剪切速率挤出，其中0.7〜0.8mm，长径比为10〜12。 3 500秒-1; 然后在喷丝板和淬火槽表面之间的10〜15mm的气隙内以200〜5000min -1的变形率进行喷射拉伸; 将喷射流体进料到骤冷浴中以形成凝胶长丝; 提取和干燥凝胶丝; 并且在拉伸比为15以下的干燥凝胶长丝上进行多级超高拉伸。在该方法中，通过使用孔径小的喷丝头，以高速挤出溶液，从而实现高剪切速率和高变形率，因此本方法是一种新颖有效的纺丝工艺。

2. 发明授权

US08858851B2 Method for producing lower size, high tenacity and high modulus polyethylene fiber 有权
标题翻译：生产低尺寸，高强度和高模量聚乙烯纤维的方法
公开(公告)号：US08858851B2
公开(公告)日：2014-10-14
申请号：US12671962
申请日：2008-09-11
申请人： Nianci Yang , Yuanjun Zhang , Bo Gao , Zhiquan Wu , Mingqing Lin , Chuanqing Wu , Yong Guo , Yunbo Zhou , Haijun Lin
发明人： Nianci Yang , Yuanjun Zhang , Bo Gao , Zhiquan Wu , Mingqing Lin , Chuanqing Wu , Yong Guo , Yunbo Zhou , Haijun Lin
IPC分类号： D01D5/16 , D02J1/22 , D01D5/06 , D01D4/02 , D01F6/04
CPC分类号： D01D5/06 , D01D4/02 , D01F6/04 , D02J1/228
摘要： The present invention discloses a process for producing low-titer, high-strength and high-modulus polyethylene fibers, comprising the following steps: dissolving the ultra-high molecular weight polyethylene into paraffin oil with a low viscosity to form a spinning solution with a concentration of 3˜15%; extruding the spinning solution through a thin spinneret with at least 10 orifices having a diameter φ of 0.7˜0.8 mm and a length/diameter ratio of 10˜12, by applying a high pressure in the range of 2.5±1.0 MPa to the spinning solution, such that the fluid in the orifices is extruded at a shear rate of 200˜3 500 sec−1; and then performing a jet stretch at a deformation rate of 200˜5 000 min−1 within an air-gap of 10˜15 mm between the spinneret and the quench bath surface; feeding the jet-stretched fluid into the quench bath to form gel filaments; extracting and drying the gel filaments; and performing a multistage ultrahigh post stretch on the dried gel filaments with a stretch ratio of 15 or less. In this process, the solution is extruded at a high rate by using a spinneret with small orifice diameter, thereby achieving a high shear rate and a high deformation rate, so the present process is a novel and effective spinning process.
摘要翻译：本发明公开了一种生产低滴度，高强度，高模量聚乙烯纤维的方法，包括以下步骤：将超高分子量聚乙烯溶解在低粘度的石蜡油中，形成浓度为 3〜15％通过具有至少10个具有直径＆孔的孔的薄喷丝板挤出纺丝溶液。通过向纺丝溶液施加2.5±1.0MPa的高压，使得孔中的流体以200〜200的剪切速率挤出，其中0.7〜0.8mm，长径比为10〜12。 3 500秒-1; 然后在喷丝板和淬火槽表面之间的10〜15mm的气隙内以200〜5000min -1的变形率进行喷射拉伸; 将喷射流体进料到骤冷浴中以形成凝胶长丝; 提取和干燥凝胶丝; 并且在拉伸比为15以下的干燥凝胶长丝上进行多级超高拉伸。在该方法中，通过使用孔径小的喷丝头，以高速挤出溶液，从而实现高剪切速率和高变形率，因此本方法是一种新颖有效的纺丝工艺。

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