改性碳纳米管原位增强C36二聚脂肪酸柔性不饱和聚酯树脂的制备与性能

doi:10.16085/j.issn.1000-6613.2019-1280

摘要/Abstract

摘要：

采用原位聚合制备MWCNTs-OH改性C₃₆二聚脂肪酸基柔性不饱和聚酯树脂，研究了掺入不同质量分数的MWCNTs-OH对DFA/UPR复合材料的力学性能、断面微观形貌、热稳定性以及耐溶剂性能的影响。经FTIR和SEM分析得出，MWCNTs-OH作为可反应型填料参与原位缩合反应，聚酯树脂的断裂方式为韧性断裂。不饱和聚酯树脂材料的综合性能在碳纳米管质量分数为0.6%时达到最佳，拉伸强度、弹性模量、断裂伸长率和弯曲强度分别提高了78.94%、111.02%、16.38%和70.03%，材料的热稳定性和耐溶剂性能得到有效改善。

关键词: 不饱和聚酯树脂, 碳纳米管, C₃₆二聚脂肪酸, 原位聚合, 增强增韧

Abstract:

A MWCNTs-OH modified C₃₆ dimer fatty acid-based flexible unsaturated polyester resin was prepared through the in-situ polymerization method. The aim of this study was to find a suitable nanofiller for UPR to improve the mechanical properties of DFA/UPR. The material structure, morphology of the tensile fracture surface, and elemental composition of the fracture surface were analyzed by FTIR and SEM. It was found that MWCNTs-OH grafted onto the DFA/UPR backbone by chemical bonds, and the material exhibited ductile fracture. The effects of the loading of MWCNTs-OH on the thermal stability, mechanical property and solvent resistance of the material were investigated using TGA, tensile analysis, flexural analysis, hardness analysis and solvent resistance analysis. The results indicated that compared to DFA/UPR, the material in the mass fraction of 0.6% MWCNTs-OH showed the optimum property, the tensile strength, elasticity modulus, elongation-at-break and flexural strength increased by 78.94%, 111.02%, 16.38%, and 70.03%, respectively, and the solvent resistance and thermal stability of the resin were effectively improved.

Key words: unsaturated polyester resin, multi-walled carbon nanotube, C₃₆ dimer fatty acid, in-situ polymerization, reinforced toughening

中图分类号:

TQ322.4⁺1

严旭明, 黄雪, 杨锐钊, 冯光炷. 改性碳纳米管原位增强C₃₆二聚脂肪酸柔性不饱和聚酯树脂的制备与性能[J]. 化工进展, 2020, 39(5): 1888-1896.

Xuming YAN, Xue HUANG, Ruizhao YANG, Guangzhu FENG. A new type of unsaturated polyester resin with reactive multi-walled carbon nanotube and C₃₆ dimer fatty acid: preparation and property[J]. Chemical Industry and Engineering Progress, 2020, 39(5): 1888-1896.

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改性碳纳米管原位增强C₃₆二聚脂肪酸柔性不饱和聚酯树脂的制备与性能

A new type of unsaturated polyester resin with reactive multi-walled carbon nanotube and C₃₆ dimer fatty acid: preparation and property

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