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摘要
选用聚乙烯(PE)为皮层,低熔点聚酯(LPET)为芯层进行双组分皮芯复合纺丝,制备了细旦ES纤维(热粘结聚酯纤维)。通过扫描电子显微镜、电子单纱强力机对纤维表面形态、力学性能等进行分析和测试,研究了纺丝温度、卷绕速度、牵伸倍数、牵伸温度、皮芯比例等对细旦ES纤维力学性能和可纺性的影响。结果表明:当PE挤出温度为182℃、200℃、203℃、205℃,LPET挤出温度为190℃、205℃、213℃、215℃时,细旦ES纤维纺丝过程顺利且纤维成型良好;当牵伸温度为80℃、牵伸倍数为1.75倍,卷绕速度为3600m/min,皮芯比为5∶5(质量比)时,纤维的可纺性、形态及力学性能良好。
Abstract
Fine denier ethylene-propylene side by side (ES)(thermally bonded polyester) fibers were prepared by selecting polyethylene (PE) as the skin layer and low melting point polyester (LPET) as the core layer for two-component skin-core composite spinning.The surface morphology and mechanical properties of the fibers were analyzed and tested by scanning electron microscope and electronic single-yarn strength machine,and the effects of spinning temperature,winding speed,drafting multiplier,drafting temperature,and skin-core ratio on the mechanical properties and spinnability of the fine denier ES fibers were studied.The results showed that the fine denier ES fiber spinning process was smooth and the fibers were well formed when the PE extrusion temperatures were 182℃,200℃,203℃,205℃,and the LPET extrusion temperatures were 190℃,205℃,213℃,215℃.When the drafting temperature was 80℃,the drafting multiplier was 1.75 times,the winding speed was 3600m/min,and the ratio of skin-to-core ratio was 5∶5,the fibers exhibited good spinnability,morphology and mechanical properties.
关键词
ES纤维
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低熔点聚酯
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皮芯复合纺丝
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纺丝工艺
Key words
ethylene-propylene side by side (ES) fiber
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low-melting point polyester
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sheath-core composite spinning
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spinning process
细旦ES纤维制备工艺与性能研究[J].
化工新型材料, 2025, 53(9): 154-158 DOI:10.19817/j.cnki.issn1006-3536.2025.09.012
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基金资助
南平市“揭榜挂帅”科技重大项目(N2021A004);福建省区域发展项目(2023H4019)
