Zn<sup>2+</sup>-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究

蔡永祺; 梅启林; 姜端洋; 徐建蓉; 高琳沁; 丁国民

doi:10.14028/j.cnki.1003-3726.2024.24.100

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Zn²⁺-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究

研究论文 | 更新时间：2024-11-20

- Zn²⁺-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究
- Research on Metal-ligand Mechanism and Mechanical Properties of Zn²⁺-UV Precuring Acrylate Elastomer
- 高分子通报 2024年37卷第11期页码：1608-1619
- 作者机构：
  
  武汉理工大学材料科学与工程学院，武汉 430070
- 作者简介：
  
  *梅启林，E-mail：meiqilin@whut.edu.cn；丁国民，E-mail：sdscdgm@126.com
  *梅启林，E-mail：meiqilin@whut.edu.cn；丁国民，E-mail：sdscdgm@126.com
- 基金信息：
  
  湖北省自然科学基金面上项目(2022CFB384);国家自然科学基金(52003120);武汉理工大学自主创新研究基金(2022IVA004)
- DOI：10.14028/j.cnki.1003-3726.2024.24.100
  中图分类号：
- 纸质出版日期：2024-11-20，
  
  网络出版日期：2024-06-21，
  
  收稿日期：2024-04-03，
  
  录用日期：2024-05-15
- 稿件说明：
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蔡永祺, 梅启林, 姜端洋, 徐建蓉, 高琳沁, 丁国民. Zn²⁺-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究. 高分子通报, 2024, 37(11), 1608–1619

Cai, Y. Q.; Mei, Q. L.; Jiang, D. Y.; Xu, J. R. Gao, L. Q.; Ding, G. M. Research on metal-ligand mechanism and mechanical properties of Zn²⁺-UV precuring acrylate elastomer. Polym. Bull. (in Chinese), 2024, 37(11), 1608–1619
蔡永祺, 梅启林, 姜端洋, 徐建蓉, 高琳沁, 丁国民. Zn²⁺-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究. 高分子通报, 2024, 37(11), 1608–1619 DOI： 10.14028/j.cnki.1003-3726.2024.24.100.

Cai, Y. Q.; Mei, Q. L.; Jiang, D. Y.; Xu, J. R. Gao, L. Q.; Ding, G. M. Research on metal-ligand mechanism and mechanical properties of Zn²⁺-UV precuring acrylate elastomer. Polym. Bull. (in Chinese), 2024, 37(11), 1608–1619 DOI： 10.14028/j.cnki.1003-3726.2024.24.100.

摘要

为了同时提高聚丙烯酸酯弹性体的强度和变形能力，通过光预聚工艺制备了不同黏度的液态丙烯酸酯树脂，使用过氧化苯甲酰(benzoyl peroxide，BPO)和

-二甲基苯胺(

-dimethylaniline，DMA)作为固化体系并提供配位原子与锌离子(Zn

)产生金属配位键，增加分子链间的相互作用以提高聚合物的力学性能。研究发现在固化过程中树脂由淡黄色变为紫色，固化完全后最终变为绿色。深入探究了此体系颜色变化的原因，进而揭示Zn

与聚合物分子链的配合机理：Zn

同时与DMA中的N原子和BPO中的O原子产生配位键，当N、O上带有自由基时体系表现出紫色，无自由基时则表现为绿色。基于以上配位机理，Zn

与分子链产生的配位键位于链端，极大地提高了弹性体的断裂伸长率，使制备的金属配位丙烯酸酯弹性体的断裂伸长率可从基体的630%提升至7400%。基于金属配位键的弱键特点，研究发现适当的热处理可调节配位键的数量，经过150 ℃加热处理后，相比于无配位体系，Zn

配位丙烯酸酯弹性体的拉伸强度提高了28.6%，并且断裂伸长率提高了39.3%，即可同时提升弹性体的强度和变形能力。该研究为金属配位丙烯酸酯弹性体、高延伸丙烯酸酯弹性体的制备提供新思路，制备的弹性体可作为密封件、柔性传感器基体等在对材料的延展率有高要求的应用场景下使用。

Abstract

In order to improve the strength and deformation of acrylate elastomer simultaneously

the liquid acrylate resin with different viscosities was prepared through the UV precuring process

then benzoyl peroxide (BPO) and

-dimethylaniline (DMA) were used as the curing system

which provided N

O atom coordinating with Zn

so that the interaction between molecular chains was increased to enhance the mechanical properties of the elastomer. In the curing process

resin turned from light yellow to purple

and became green eventually after curing completely. The causes of the color change and the mechanism of Zn

with the molecular chain of polymer were revealed: when N

O atoms provided by BPO and DMA

respectively

with free radicals coordinated with Zn

the system became purple; the system turned green when the free radicals faded away completely. According to the coordination mechanism

metal coordination bonds generated between Zn

and the molecular chains were located at the end of the chain

which greatly increased the elongation at break of the elastomer

so that the elongation at break of Zn

-acrylate elastomer increa

sed to 7400% from 630%. Because of characteristics of the metal coordination bonds

we found that appropriate heat treatment can adjust the number of coordination bonds. After 150 ℃ treatment

the tensile strength and the elongation at break of Zn

-acrylate elastomer increased by 28.6% and 39.6%

respectively

compared to those of the pure acrylate elastomer. In other words

both the tensile strength and elongation at break of Zn

-acrylate elastomer increased. This study provides a strategy for metal coordination with acrylate polymer

which is expected to play a significant role in the research of high elongation acrylate elastomer. The elastomer prepared can be used as seals

flexible sensor substrates in scenarios requiring the high extension rate materials.

关键词

光预聚丙烯酸酯弹性体金属配位机理大变形能力

Keywords

PhotoprepolymerizationAcrylate elastomerMetal-ligand mechanismExcellent deformability

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Zn2+-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究

Research on Metal-ligand Mechanism and Mechanical Properties of Zn2+-UV Precuring Acrylate Elastomer

DOI：10.14028/j.cnki.1003-3726.2024.24.100

摘要

Abstract

关键词

Keywords

references

Zn²⁺-光预聚丙烯酸酯弹性体的配位机理及其力学性能研究

Research on Metal-ligand Mechanism and Mechanical Properties of Zn²⁺-UV Precuring Acrylate Elastomer