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文章编号： 1672-6987（2023）02-0070-12； DOI： 10.16351/j.1672-6987.2023.02.010
曾艳宁*， 宁钊， 杨伟明， 席澳千(桂林理工大学 材料科学与工程学院，广西 桂林 541004)
摘要： 研究了改性介孔SBA-15的添加量对复合材料的性能影响，尤其是机械性能，热稳定性，再回收，自修复以及形状记忆的能力。首先利用γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)对介孔SBA-15进行改性，使其表面具有可反应的环氧官能团，然后用于对邻甲酚醛环氧类玻璃的增强。以端基二硫醇的2,2′-（1,4-亚苯基）-双［4-硫醇1,3,2-二氧杂戊烷（BDB）为交联剂，邻甲酚醛环氧树脂为预聚体，改性后的介孔SBA-15为增强剂，通过“巯基-环氧”点击反应得到高强度环氧类玻璃复合材料。研究表明当增强剂添加量为环氧树脂的10%(质量分数)时，环氧类玻璃复合材料的拉伸强度最高可达549 MPa，断裂应变为127%。
关键词： 环氧树脂； 类玻璃高分子； 硼酸酯键； 介孔SBA-15
中图分类号： TB 324文献标志码： A
引用格式： 曾艳宁， 宁钊， 杨伟明， 等. 介孔SBA-15增强硼酸酯交换基环氧类玻璃高分子［J］. 青岛科技大学学报(自然科学版), 2023, 44(2): 70-81.
ZENG Yanning, NING Zhao, YANG Weiming, et al. Enhancement of epoxy vitrimer based on boronic ester bond by mesoporous SBA-15［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2023, 44(2): 70-81.
Enhancement of Epoxy Vitrimer Based on Boronic Ester Bond
by Mesoporous SBA-15
ZENG Yanning, NING Zhao, YANG Weiming, XI Aoqian
(College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China)
Abstract: The effects of the SBA-15 contents on the properties of obtained composites, especially, mechanical properties, thermostability, reprocessing, shape memory and self-healing capacities were investigated. At first, mesoporous SBA-15 were modified by silane coupler (KH560) to give the surface epoxy groups. Vitrimer/SBA-15 composites were prepared through thiol-epoxy “click” chemistry reaction, using commercial o-cresol formaldehyde epoxy resin (o-CFER) as monomer, dithiol-containing boronic ester (2,2′-(1,4-phenylene)-bis［4-mercaptan-1,3,2-dioxaborolane, BDB) as cross-linker and modified SBA-15 as enhancer. It was observed that when SBA-15 content was 10% of o-CFER, obtained composite showed the best mechanical properties, the tensile strength of 549 MPa and breaking strain of 127%.
Key words: epoxy resin; vitrimer; boronic ester bond; mesoporous SBA-15
收稿日期： 2022-07-23
基金项目： 广西自然科学基金项目（2018GXNSFBA281121）；广西“百人”海外高层次人才引进资助项目（2018）.
作者简介： 曾艳宁（1986—），女，副教授.*通信联系人.
