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液体橡胶与热塑性颗粒增韧环氧树脂的协同效应

Synergistic Effects of Liquid Rubber and Thermoplastic Particles for Toughening Epoxy Resin.

作者信息

Wang Zhaodi, Lai Yuanchang, Xu Peiwen, Ma Junchi, Xu Yahong, Yang Xin

机构信息

College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

Yangtze River Delta Carbon Fiber and Composites Innovation Center, Changzhou 213000, China.

出版信息

Polymers (Basel). 2024 Sep 30;16(19):2775. doi: 10.3390/polym16192775.

DOI:10.3390/polym16192775
PMID:39408483
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11478654/
Abstract

This study aims to investigate the toughening effects of rubber and thermoplastic particles on epoxy resin (EP), and to understand the mechanism underlying their synergistic effect. For this purpose, three EP systems were prepared using diglycidyl ether of bisphenol-A (DGEBA) epoxy resin (E-54) and 4,4-Diamino diphenyl methane (Ag-80) as matrix resin, 4,4-diaminodiphenyl sulfone (DDS) as a curing agent, and phenolphthalein poly (aryl ether ketone) particles (PEK-C) and carboxyl-terminated butyl liquid rubber (CTBN) as toughening agents. These systems are classified as an EP/PEK-C toughening system, EP/CTBN toughening system, and EP/PEK-C/CTBN synergistic toughening system. The curing behavior, thermal properties, mechanical properties, and phase structure of the synergistic-toughened EP systems were comprehensively investigated. The results showed that PEK-C did not react with EP, while CTBN reacted with EP to form a flexible block polymer. The impact toughness of EP toughened by PEK-C/CTBN was improved obviously without significantly increasing viscosity or decreasing thermal stability, flexural strength, and modulus, and the synergistic toughening effect was significantly higher than that of the single toughening system. The notable improvement in toughness is believed to be due to the synergistic energy dissipation effect of PEK-C/CTBN.

摘要

本研究旨在探究橡胶颗粒和热塑性颗粒对环氧树脂（EP）的增韧效果，并了解其协同效应的潜在机制。为此，采用双酚A二缩水甘油醚（DGEBA）环氧树脂（E-54）和4,4-二氨基二苯甲烷（Ag-80）作为基体树脂，4,4-二氨基二苯砜（DDS）作为固化剂，酚酞聚芳醚酮颗粒（PEK-C）和羧基封端的丁基液体橡胶（CTBN）作为增韧剂，制备了三种EP体系。这些体系分别归类为EP/PEK-C增韧体系、EP/CTBN增韧体系和EP/PEK-C/CTBN协同增韧体系。对协同增韧EP体系的固化行为、热性能、力学性能和相结构进行了全面研究。结果表明，PEK-C不与EP反应，而CTBN与EP反应形成柔性嵌段聚合物。PEK-C/CTBN增韧的EP的冲击韧性明显提高，同时未显著增加粘度或降低热稳定性、弯曲强度和模量，且协同增韧效果显著高于单一增韧体系。韧性的显著提高被认为是由于PEK-C/CTBN的协同能量耗散效应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/2e6441974438/polymers-16-02775-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/a92aed0eb8ae/polymers-16-02775-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/3ccad890f5e3/polymers-16-02775-sch001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/8eec8083fb9f/polymers-16-02775-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/d8403b404640/polymers-16-02775-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/323c6ccfab6f/polymers-16-02775-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/ceb4ed8abde0/polymers-16-02775-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/49bc027e72e7/polymers-16-02775-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/5e4c051f5753/polymers-16-02775-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/405f00510e9a/polymers-16-02775-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/8f01fd11643e/polymers-16-02775-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/2e6441974438/polymers-16-02775-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/a92aed0eb8ae/polymers-16-02775-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/3ccad890f5e3/polymers-16-02775-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/ce28c7b8f791/polymers-16-02775-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/8eec8083fb9f/polymers-16-02775-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/d8403b404640/polymers-16-02775-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/323c6ccfab6f/polymers-16-02775-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/ceb4ed8abde0/polymers-16-02775-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/49bc027e72e7/polymers-16-02775-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/5e4c051f5753/polymers-16-02775-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/405f00510e9a/polymers-16-02775-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/8f01fd11643e/polymers-16-02775-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8d3d/11478654/2e6441974438/polymers-16-02775-g010.jpg

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本文引用的文献

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Polymers (Basel). 2023 Mar 10;15(6):1398. doi: 10.3390/polym15061398.
2
Nanosilica-Toughened Epoxy Resins.纳米二氧化硅增韧环氧树脂
Polymers (Basel). 2020 Aug 8;12(8):1777. doi: 10.3390/polym12081777.
3
Mechanical, Thermal, and Electrical Properties of BN-Epoxy Composites Modified with Carboxyl-Terminated Butadiene Nitrile Liquid Rubber.用羧基封端的丁腈液体橡胶改性的氮化硼-环氧树脂复合材料的力学、热学和电学性能
Polymers (Basel). 2019 Sep 23;11(10):1548. doi: 10.3390/polym11101548.