LDPE/PEW熔喷超细纤维及其非织造布性能

doi:10.16085/j.issn.1000-6613.2024-0859

化工进展 ›› 2025, Vol. 44 ›› Issue (7): 4032-4038.DOI: 10.16085/j.issn.1000-6613.2024-0859

• 材料科学与技术 • 上一篇

LDPE/PEW熔喷超细纤维及其非织造布性能

刘文龙¹(), 马秀清¹, 李长金², 何东洋¹, 高觊兴¹, 张杨¹, 李满意³, 杨卫民¹, 李好义¹()

^1.北京化工大学机电工程学院，北京 100029
^2.中国石油化工股份有限公司北京化工研究院，北京 100013
^3.山东康乃尔材料科技有限公司，山东滨州 256600

收稿日期:2024-05-26 修回日期:2024-07-09 出版日期:2025-07-25 发布日期:2025-08-04
通讯作者: 李好义
作者简介:刘文龙（2000—），男，硕士研究生，研究方向为微纳米纤维先进制造及应用。E-mail：2409565092@qq.com。
基金资助:
国家自然科学基金(U22B6012);中国石化首席科学家工作室项目(223207)

LDPE/ PEW melt-blown microfiber and its nonwovens performance

LIU Wenlong¹(), MA Xiuqing¹, LI Changjin², HE Dongyang¹, GAO Jixing¹, ZHANG Yang¹, LI Manyi³, YANG Weimin¹, LI Haoyi¹()

^1.College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
^2.Sinopec Beijing Research Institute of Chemical Industry, Beijing 100013, China
^3.Shandong Cornell Materials Technology Co. , Ltd. , Binzhou 256600, Shandong, China

Received:2024-05-26 Revised:2024-07-09 Online:2025-07-25 Published:2025-08-04
Contact: LI Haoyi

摘要/Abstract

摘要：

低密度聚乙烯（LDPE）具备优良的耐腐蚀性、耐磨性和疏水性，但加工流动性差，熔体成纤困难。以聚乙烯蜡（PEW）为添加剂，与LDPE共混改性后可制备出具有优异加工性能的高熔融指数纺丝原料。本文研究了不同原料配比下LDPE/PEW共混物的流动性能和热结晶性能，进一步采用熔喷工艺制备了LDPE/PEW非织造布，并对非织造布的微观形貌、纤维直径、防水透湿性能和过滤性能进行了研究和分析。结果表明，随着PEW含量的增加，共混物的熔融指数不断提升，熔体表现出良好的流动性和可纺性，熔喷纤维的直径显著细化，纤维平均直径最小可达5.7μm。在PEW的质量分数为70%时，熔喷非织造布的水接触角为144.8°，呈现优异的疏水性能。在32L/min测试流量下，非织造布的过滤性能为80.67%，滤阻仅为23.1Pa，表现出良好的高效低阻特性。

关键词: 低密度聚乙烯, 复合材料, 聚合物加工, 过滤, 超细纤维

Abstract:

Low-density polyethylene (LDPE) has excellent corrosion resistance, abrasion resistance and hydrophobicity, but it has poor processing fluidity and difficulty in melt fiberization. Polyethylene wax (PEW) was used as an additive and blended with LDPE to prepare high melt index spinning raw materials with excellent processing performance. In this paper, the fluidity and crystallization properties of LDPE/PEW blends under different raw material ratios were studied, LDPE/PEW nonwovens were prepared by melt-blown process, and the microscopic morphology, fiber diameter, waterproof and moisture permeability and filtration performance of the nonwovens were studied and analyzed. The results showed that with the increase of PEW content, the melt flow index of the blend continued to increase. The melt indicated good fluidity and spinnability, and the diameter of the melt-blown fiber was significantly refined. The average fiber diameter could reached as little as 5.7μm. When the mass fraction of PEW was 70%, the water contact angle of the melt-blown nonwovens was 144.8°, showing excellent hydrophobic characteristics. At the flow rate of 32L/min, the filtration performance of the nonwoven fabric was 80.67% and the filtration resistance was only 23.1Pa, indicating good high efficiency and low resistance characteristics.

Key words: low-density polyethylene, composites, polymer processing, filtration, microfiber

中图分类号:

TS174.8

刘文龙, 马秀清, 李长金, 何东洋, 高觊兴, 张杨, 李满意, 杨卫民, 李好义. LDPE/PEW熔喷超细纤维及其非织造布性能[J]. 化工进展, 2025, 44(7): 4032-4038.

LIU Wenlong, MA Xiuqing, LI Changjin, HE Dongyang, GAO Jixing, ZHANG Yang, LI Manyi, YANG Weimin, LI Haoyi. LDPE/ PEW melt-blown microfiber and its nonwovens performance[J]. Chemical Industry and Engineering Progress, 2025, 44(7): 4032-4038.

图/表 7

参考文献 17

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LDPE/PEW	冷结晶温/℃	冷结晶焓/J∙g^-1	熔融温度/℃	熔融焓/J∙g^-1	结晶度/％
7∶3	111.51	140.596	127.21	133.927	46.6
6∶4	115.85	163.745	128.69	150.310	52.3
5∶5	116.85	188.544	130.03	164.650	57.3
4∶6	116.28	196.430	130.95	187.686	65.3
3∶7	116.11	202.050	130.28	183.052	62.7

LDPE/PEW	冷结晶温/℃	冷结晶焓/J∙g^-1	熔融温度/℃	熔融焓/J∙g^-1	结晶度/％
7∶3	111.51	140.596	127.21	133.927	46.6
6∶4	115.85	163.745	128.69	150.310	52.3
5∶5	116.85	188.544	130.03	164.650	57.3
4∶6	116.28	196.430	130.95	187.686	65.3
3∶7	116.11	202.050	130.28	183.052	62.7

样品	水接触角/(°)	透湿率/g∙m^-2∙h^-1	透湿度/g∙m^-2∙Pa^-1∙h^-1
LDPE/PEW=7/3	137.9	143.6	0.102
LDPE/PEW=6/4	142.3	134.2	0.096
LDPE/PEW=5/5	142.6	132.3	0.094
LDPE/PEW=4/6	143.5	124.1	0.088
LDPE/PEW=3/7	144.8	120.2	0.085

样品	水接触角/(°)	透湿率/g∙m^-2∙h^-1	透湿度/g∙m^-2∙Pa^-1∙h^-1
LDPE/PEW=7/3	137.9	143.6	0.102
LDPE/PEW=6/4	142.3	134.2	0.096
LDPE/PEW=5/5	142.6	132.3	0.094
LDPE/PEW=4/6	143.5	124.1	0.088
LDPE/PEW=3/7	144.8	120.2	0.085

LDPE/PEW熔喷超细纤维及其非织造布性能

LDPE/ PEW melt-blown microfiber and its nonwovens performance

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