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橡塑技术与装备 CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT

3 小结 势一致，都随着频率增大而变大。
（1）当 HDPE/PA6/HDPE-g-MAH/UHMWPE 复合 （5）从 SEM 图可以看出， UHMWPE 含量增加后，
体系中 UHMWPE 含量增多后，复合材料拉伸强度先升 缺口断面变越来越粗糙，有大量的沟壑出现，呈韧性
高后降低，断裂伸长率逐渐减小，而冲击强度有了大 断裂状态，提高了复合材料韧性。
幅度的提升，在 UHMWPE 含量为 9 份时，比 HPH 提
高了 137%。 参考文献 ：
[1] 赵梓年，马珩 . HDPE-g-MAH 对 PA6/UHMWPE 共混合金
（2）大分子量 UHMWPE 的加入使得复合体系后，
力学性能及结晶行为的影响 [J]. 塑料，2005(04):57-62+100.
复合材料分子链运动更加困难，随着 UHMWPE 含量 [2] 景新阳，于元章 .UHMWPE/HDPE/PA1012 复合材料的制备
的增加，复合体系的维卡软化点逐渐上升。 及性能研究 [J]. 塑料工业，2016,44(10):14-17+29.
[3] 左建东，曾宪通，陈俊，等 .HDPE/UHMWPE 共混物的制备
（3）少量的 UHMWPE 能够提高复合体系的熔融
及其性能 [J]. 塑料 ,2010,39(02):78-79+94.
温度和结晶度，但随着 UHMWPE 含量的增加，复合
[4] Lim K, Ishak Z, Ishiaku U S, et al. High‐density
材料中 HDPE 和 PA6 大分子链运动会受到影响，因此 polyethylene/ultrahigh‐molecular‐weight polyethylene
降低了材料结晶温度和结晶度。 bl e nd . I. T he pr oc e ssi ng , t he rm a l , a nd m e c ha ni c a l
properties[J]. Journal of Applied Polymer Science, 2010,
（4）由于 UHMWPE 大分子链的加入，复合体系
97(1):413-425.
整体流动性变差，随着 UHMWPE 含量增加，复合材 [5] 狄海燕，吴世臻，沈惠玲，等 .PA6/UHMWPE/HDPE 共混物
料的复数黏度逐渐增加，弹性模量和储能模量变化趋 的热性能研究 [J]. 天津工业大学学报，2006(06):12-14.

Preparation and performance study of HDPE/PA6/UHMWPE composites

Liang Zhengchen, Li Beibei, Wang Xuanlun*
(Chongqing University of Technology, Chongqing 40054, China)
Abstract: Researchers prepared high-density polyethylene (HDPE)/nylon 6 (PA6)/ultra-high density
polyethylene (UHMWPE) blend particles using twin screw melt blending, and then prepared composite
sheets through a single screw extrusion rolling process. The effects of UHMWEPE content on the mechanical
properties, heat resistance, crystallization properties, rheological properties, micro morphology and ultrasonic
welding strength of HDPE/PA6 composites were studied. The experimental results show that with the increase
of UHMWPE content, the tensile strength of the composite material shows a trend of first increasing and
then decreasing, and the elongation at break decreases. When the UHMWPE content is 9 parts, the impact
strength is increased by 149.1% compared to pure HDPE, and the tensile strength of the welded joint is
increased by 98.4%. Crystallization research has found that adding a small amount of UHMWPE can promote
the crystallization of HDPE and PA6.
Key words: ultra-high density polyethylene; Nylon 6; compound material; mechanical property
（R-03)

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