丙烯酸共聚改性液态丙烯酸酯树脂及其复合材料力学性能研究

doi:10.19936/j.cnki.2096-8000.20240528.002

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (5): 12-18.DOI: 10.19936/j.cnki.2096-8000.20240528.002

丙烯酸共聚改性液态丙烯酸酯树脂及其复合材料力学性能研究

陈述慧, 梅启林^*, 丁国民, 汪瑞, 蔡永祺, 姜端洋

武汉理工大学材料科学与工程学院,武汉430070

收稿日期:2023-03-14 出版日期:2024-05-28 发布日期:2024-06-17
通讯作者: 梅启林(1970—),男,教授,主要从事树脂基复合材料方面的研究,meiqilin@whut.edu.cn。
作者简介:陈述慧(1997—),男,硕士研究生,主要从事高分子复合材料方面的研究。
基金资助:
国家自然科学基金项目(52003120);中央高校基本科研业务费专项资金(2022IVA004);江苏省“双创计划”项目;湖北省自然科学基金一般面上项目(2022CFB384)

Study of acrylic copolymer modified liquid acrylate resin and its composite mechanical properties

CHEN Shuhui, MEI Qilin^*, DING Guomin, WANG Rui, CAI Yongqi, JIANG Duanyang

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2023-03-14 Online:2024-05-28 Published:2024-06-17

摘要/Abstract

摘要： 为了解决丙烯酸酯树脂拉伸强度不足及其与纤维界面结合较弱的问题,本文通过原位聚合的方法,以丙烯酸(AAc)共聚改性液态丙烯酸酯类低聚合树脂(AOLM),通过提高聚丙烯酸酯类树脂基体(PAOLM)分子间作用力,显著提升固化后树脂基体及其玻纤(GF)增强复合材料的整体力学性能。研究结果表明:引入的AAc使PAOLM红外光谱图中出现了分子内氢键(3 545 cm^-1)和分子间氢键(3 294 cm^-1)的振动吸收峰;与未改性的PAOLM相比,共聚改性后树脂P(AOLM-AAc)的拉伸强度和模量分别提高了20.86%和32.65%,弯曲强度和模量分别提高了18.14%和25.73%,冲击韧性提高了24.03%,玻璃化转变温度提高了10.03%;与采用AOLM制备的复合材料GF/PAOLM相比,采用AAc改性AOLM制备的复合材料GF/P(AOLM-AAc)的拉伸强度和弯曲强度分别提高了11.62%和37.18%。

关键词: 原位聚合, 共聚改性, 热塑性复合材料, 力学性能

Abstract: In order to solve the problem of insufficient tensile strength of acrylate resin and its weak bonding with fiber interface. In this paper, liquid acrylate low polymerization resin (AOLM) was modified by copolymerization of acrylic acid (AAc) to significantly improve the overall mechanical properties of the resin matrix and its glass fiber (GF) reinforced composites after curing by increasing the intermolecular force of polyacrylate resin matrix (PAOLM). The results show that the introduced AAc causes the appearance of vibrational absorption peaks for intramolecular hydrogen bonding (3 545 cm^-1) and intermolecular hydrogen bonding (3 294 cm^-1) in the infrared spectrogram of PAOLM. Compared with the unmodified PAOLM, the tensile strength and modulus of resin P(AOLM-AAc) are improved by 20.86% and 32.65%, respectively. The bending strength and modulus are increased by 18.14% and 25.73%, respectively. The impact toughness is improved by 24.03%, and the glass transition temperature is increased by 10.03% after copolymerization modification. Compared with the composite with AOLM (GF/PAOLM), the tensile strength and flexural strength of the composite with AAc-modified AOLM [GF/P(AOLM-AAc)] are increased by 11.62% and 37.18%, respectively.

Key words: in-situ polymerization, copolymerization modification, thermoplastic composites, mechanical properties

中图分类号:

TB332

陈述慧, 梅启林, 丁国民, 汪瑞, 蔡永祺, 姜端洋. 丙烯酸共聚改性液态丙烯酸酯树脂及其复合材料力学性能研究[J]. 复合材料科学与工程, 2024, 0(5): 12-18.

CHEN Shuhui, MEI Qilin, DING Guomin, WANG Rui, CAI Yongqi, JIANG Duanyang. Study of acrylic copolymer modified liquid acrylate resin and its composite mechanical properties[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(5): 12-18.

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丙烯酸共聚改性液态丙烯酸酯树脂及其复合材料力学性能研究

Study of acrylic copolymer modified liquid acrylate resin and its composite mechanical properties

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