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[1]梁雪婷,等.端羟基超支化聚酯脂肪酸酯对尼龙6/玻璃纤复合材料性能的影响[J].武汉工程大学学报,2024,46(06):637-643.[doi:10.19843/j.cnki.CN42-1779/TQ.202403030]
 LIANG Xueting,,et al.Effect of fatty acid esters of hydroxyl-terminal hyperbranched polyester on performance of nylon 6/glass fiber reinforced composites[J].Journal of Wuhan Institute of Technology,2024,46(06):637-643.[doi:10.19843/j.cnki.CN42-1779/TQ.202403030]
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端羟基超支化聚酯脂肪酸酯对尼龙6/玻璃纤复合材料性能的影响
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
46
期数:
2024年06期
页码:
637-643
栏目:
材料科学与工程
出版日期:
2024-12-31

文章信息/Info

Title:
Effect of fatty acid esters of hydroxyl-terminal hyperbranched polyester on performance of nylon 6/glass fiber reinforced composites
文章编号:
1674 - 2869(2024)06 - 0637 - 07
作者:
1. 催化转化与能源材料化学教育部重点实验室(中南民族大学),湖北 武汉 430074;
2. 催化材料科学湖北省重点实验室(中南民族大学),湖北 武汉 430074;
3. 超支化聚合物合成与应用技术湖北省工程研究中心,湖北 武汉 430074
Author(s):
1. Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education(South-Central Minzu University),Wuhan 430074,China;
2. Hubei Key Laboratory of Catalysis and Materials Science(South-Central Minzu University),Wuhan 430074,China;
关键词:
Keywords:
分类号:
TB332
DOI:
10.19843/j.cnki.CN42-1779/TQ.202403030
文献标志码:
A
摘要:
玻璃纤维与尼龙的性质存在差异,其界面相互作用较弱,导致所得复合材料的机械性能低且表面粗糙。利用脂肪酸改性端羟基超支化聚酯(H24)合成了不同脂肪酸链长的端羟基超支化聚酯脂肪酸酯(H24-n,n=8,12,16,18),用于制备尼龙6/玻璃纤维复合材料。利用傅里叶变换红外光谱、氢-1核磁共振氢谱和凝胶渗透色谱表征了聚合物的化学结构和分子量。系统研究了H24-n的脂肪酸链长对尼龙6/玻璃纤维复合材料的机械性能、加工性能和热性能的影响规律。复合材料的综合性能随H24-n末端脂肪酸链长度的增大而提高;复合材料的流动性能随H24-18用量的增加而提高,而其机械性能则呈现先升高后降低的趋势。与空白样相比,经质量分数为0.9%的H24-18改性的复合材料的熔融指数、拉伸强度、弯曲强度和冲击强度分别提升了73.04%、14.53%、5.60%和9.71%。通过扫描电子显微镜、差示扫描量热法等技术分析了H24-n在提升复合材料性能方面的作用机制。
Abstract:
Due to the inherent differences in properties between glass fibers and nylon,the weak interfacial interactions result in low mechanical properties and rough surfaces of the composite materials of them. In this study,fatty acid esters of hydroxyl-terminal hyperbranched polyester with different fatty acid chain lengths (H24-n,n=8,12,16,18) were synthesized using fatty acid and hydroxyl-terminal hyperbranched polyesters (H24),to prepare nylon 6/glass fiber composites. The structure and molecular weight of the polymers were characterized using Fourier transform infrared spectroscopy,1H nuclear magnetic resonance spectroscopy and gel permeation chromatography. The influence of fatty acid chain length of H24-n on the mechanical,processing and thermal properties of nylon 6/glass fiber composites was systematically investigated. The performance of composites was improved with the increase of terminal fatty acid chain length of H24-n,and the flow properties of the composites increased with the increase of H24-18 content,while their mechanical properties increased firstly and then decreased. The melt index,tensile strength,flexural strength and impact strength of the composites with H24-18 mass fraction of 0.9% were improved by 73.04%,14.53%,5.60% and 9.71%,respectively,compared with those of nylon 6/glass fiber composites. The improving mechanism of H24-n in the composites was analyzed by scanning electron microscopy and differential scanning calorimetry.

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备注/Memo

备注/Memo:
收稿日期:2024-03-25
基金项目:国家自然科学基金区域创新联合基金重点项目(U23A20691);中南民族大学中央高校基本科研业务费专项资金(CZD24001);中南民族大学学术创新团队项目(XTZ24012)
作者简介:梁雪婷,硕士研究生。Email:[email protected]
*通信作者:张道洪,博士,教授。Email:[email protected]
引文格式:梁雪婷,张道洪. 端羟基超支化聚酯脂肪酸酯对尼龙6/玻璃纤维复合材料性能的影响[J]. 武汉工程大学学报,2024,46(6):637-643.
更新日期/Last Update: 2024-12-30