Synthesis and characterization of hyperbranched thiol hardener and their curing behavior in thiol–epoxy

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE

Macromolecular Research Pub Date : 2024-10-24 DOI:10.1007/s13233-024-00334-x

Jin Han Song, Seung-Mo Hong, Seok Kyu Park, Hyeok Ki Kwon, Seok-Ho Hwang, Jong-Min Oh, Sang-Mo Koo, Giwon Lee, Chulhwan Park

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Abstract

Hyperbranched thiol (Hyperbranched mercaptopropionate, HBMP) was synthesized using a commercially available hydroxyl-terminal hyperbranched oligomer and 3-mercaptopropionic acid applying a low-temperature esterification reaction. The chemical structure and molecular weight analysis of synthesized HBMP were investigated by Fourier transform infrared spectroscopy (FT-IR) and gel permeation chromatography (GPC). The synthesized HBMP was analyzed with curing kinetics, thermal/mechanical properties, and adhesion trait with bisphenol-A-type epoxy resin compared to pentaerythritol tetra-mercaptopropionate (PETMP). The curing kinetics between HBMP and epoxy resin required higher activation energy compared to PETMP case. In addition, it was confirmed that as the content of HBMP increases, the thermal and mechanical properties decrease, but the adhesion property was greatly improved. These results indicate that incorporating hyperbranched thiol in epoxy resin is an efficient method to utilize the material as an adhesive layer.

Graphical abstract

Synthesis procedure of HBMP reaction with BoltornTM P1000 and 3-MPA.

Abstract Image

查看原文本刊更多论文

超支化巯基硬化剂的合成、表征及其在巯基环氧树脂中的固化行为

以市售羟基端超支化低聚物和3-巯基丙酸为原料，经低温酯化反应合成了超支化巯基丙酸（Hyperbranched mercaptopropy酸，HBMP）。采用傅里叶变换红外光谱（FT-IR）和凝胶渗透色谱（GPC）对合成的HBMP进行了化学结构和分子量分析。与季戊四醇四巯基丙酸（PETMP）相比，分析了合成的HBMP的固化动力学、热/力学性能以及与双酚a型环氧树脂的粘附特性。与PETMP相比，HBMP与环氧树脂之间的固化动力学需要更高的活化能。此外，还证实了随着HBMP含量的增加，材料的热学性能和力学性能下降，但粘接性能大大提高。这些结果表明，在环氧树脂中掺入超支化硫醇是一种有效的利用该材料作为粘接层的方法。figure abstract以BoltornTM P1000和3-MPA合成HBMP反应过程。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.