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材料导报  2023, Vol. 37 Issue (9): 21050030-8    https://doi.org/10.11896/cldb.21050030
  高分子与聚合物基复合材料 |
拉伸对PA6/PET/AX8900薄膜直线易撕裂性能的影响
董煜, 刘跃军*, 崔玲娜, 刘小超, 范淑红, 李霞
湖南工业大学先进包装材料与技术湖南省重点实验室,湖南 株洲 412007
Effect of Stretching on Linear Tear Property of PA6/PET/AX8900 Film
DONG Yu, LIU Yuejun*, CUI Lingna, LIU Xiaochao, FAN Shuhong, LI Xia
Hunan Provincial Key Laboratory of Advanced Packaging Materials and Technology of Hunan University of Technology, Zhuzhou 412007, Hunan, China
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摘要 以PA6为基体,引入PET相,制备五种不同配比的PA6/PET/AX8900复合材料薄膜和双向拉伸薄膜,采用SEM、DMA、DSC等研究了双向拉伸前后PA6/PET/AX8900复合材料薄膜的微观形貌、热力学和结晶行为,探讨了复合材料薄膜的直线撕裂性能、力学性能、阻隔性能和光学性能,同时研究相容剂EAG(AX8900)对PA6与PET相容性的影响。研究结果表明,添加3%AX8900对PA6/PET复合材料薄膜有明显的增容效果,PET在PA6基体中分散良好;当PET添加量从0%增加到35%时,PA6/PET/AX8900复合材料薄膜熔点降低,与此同时,由于PET中刚性苯环的存在,结晶温度从187.01 ℃下降到183.47 ℃。力学性能测试显示,当PET添加量为25%时,PA6/PET/AX8900薄膜拉伸强度相较于纯PA6膜提升25%,断裂伸长率基本不变。当拉伸比为3×1时,PET添加量为25%的PA6/PET/AX8900双向拉伸薄膜的拉伸强度较纯PA6提高了88%。直线易撕裂测试结果表明,当PET添加量从0%增加到25%时,复合材料薄膜的撕裂偏差从100%降低到46%。PET添加量为25%的PA6/PET/AX8900复合材料薄膜经过双向拉伸后,撕裂偏差相较于未拉伸前的PA6/PET/AX8900复合材料薄膜显著降低,当拉伸比为3×1时,PA6/PET/AX8900共混膜的撕裂偏差为3.2%;此外,当PET的添加量为25%时,PA6/PET/AX8900复合材料薄膜的阻隔性能和雾度都得到改善。
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董煜
刘跃军
崔玲娜
刘小超
范淑红
李霞
关键词:  PA6/PET/AX8900薄膜  相容性  双向拉伸  晶体结构  直线易撕裂性能    
Abstract: Using PA6 as the matrix and introducing the PET phase to prepare five different blending ratios of PA6/PET/AX8900 blended films and biaxially oriented films. Morphology, thermodynamics and crystallization behavior of the PA6/PET/AX8900 blended films before and after biaxial stretching were studied by SEM, DMA, DSC, etc. The linear tearing performance, mechanical properties, barrier properties and optical properties of the blend film were discussed. At the same time, the influence of the compatibilizer EAG (AX8900) on the compatibility of PA6 and PET was studied. The research results show that the addition of 3wt% AX8900 has a significant compatibilizing effect on the PA6/PET blend film, and the PET is well dispersed in the PA6 matrix;when the amount of PET added was increased from 0wt% to 35wt%, the melting point of the PA6/PET/AX8900 blend film decreased. At the same time, due to the presence of rigid benzene rings in PET, the crystallization temperature dropped from 187.01 ℃ to 183.47 ℃. The mechanical performance test showed that when the amount of PET added was 25wt%, the tensile strength of the PA6/PET/AX8900 film was increased by 25% compared with the pure PA6 film, and the elongation at break was basically unchanged. When the stretch ratio was 3×1, the tensile strength of the PA6/PET/AX8900 biaxially oriented film with a PET addition of 25wt% was 88% higher than that of pure PA6. The results of the straight-line tear test showed that when the amount of PET added was increased from 0wt% to 25wt%, the tear deviation of the blend film decreased from 100% to 46%. After the PA6/PET/AX8900 blend film with a PET content of 25wt% was biaxially stretched, the tear deviation was significantly lower than that of the unstretched PA6/PET/AX8900 blend film. When the stretch ratio was 3×1, the PA6/PET/AX8900 blend film had a tear deviation of 3.2%. In addition, when the added amount of PET was 25wt%, the barrier properties and haze of the PA6/PET/AX8900 blend film were improved.
Key words:  PA6/PET/AX8900 film    compatibility    biaxial stretching    crystal structure    linear tear property
出版日期:  2023-05-10      发布日期:  2023-05-04
ZTFLH:  TB34  
基金资助: 国家自然科学基金(11872179);湖南省自然科学基金(2018JJ4072);湖南省教育厅科学研究项目(18K079;19A138)
通讯作者:  *刘跃军,教授、博士研究生导师,华南理工大学博士,中南大学博士后,湖南工业大学包装与材料工程学院院长。主要从事高分子材料与工程、包装新材料与技术等领域的科研和教学工作。已承担国家科技支撑计划、国家自然科学基金、湖南省杰出青年基金等国家级和省部级项目10余项,先后荣获中国流变学青年奖、中国包装联合会科技进步奖等荣誉。在国内外知名学术刊物上发表论文100余篇,授权专利24项。yjliu_2005@126.com   
作者简介:  董煜,2014—2018年,本科就读于湖南工业大学包装与材料工程学院,专业为高分子材料与工程,2021年,湖南工业大学包装与材料工程学院材料学硕士毕业。主要研究方向为尼龙薄膜的拉伸。
引用本文:    
董煜, 刘跃军, 崔玲娜, 刘小超, 范淑红, 李霞. 拉伸对PA6/PET/AX8900薄膜直线易撕裂性能的影响[J]. 材料导报, 2023, 37(9): 21050030-8.
DONG Yu, LIU Yuejun, CUI Lingna, LIU Xiaochao, FAN Shuhong, LI Xia. Effect of Stretching on Linear Tear Property of PA6/PET/AX8900 Film. Materials Reports, 2023, 37(9): 21050030-8.
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http://www.mater-rep.com/CN/10.11896/cldb.21050030  或          http://www.mater-rep.com/CN/Y2023/V37/I9/21050030
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