丙烯酸酯改性聚硅氧烷的合成及其紫外光固化性能

谢美昌; 黄海清; 向洪平

doi:10.14028/j.cnki.1003-3726.2026.25.354

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丙烯酸酯改性聚硅氧烷的合成及其紫外光固化性能

研究论文 | 更新时间：2026-05-29

- 丙烯酸酯改性聚硅氧烷的合成及其紫外光固化性能
- Synthesis, UV-Curing and Properties of Acrylated Polysiloxane
- 高分子通报 2026年
- 作者机构：
  
  广东工业大学材料与能源学院　广州　 511400
- 作者简介：
  
  xianghongping@gdut.edu.cn
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2026.25.354
  中图分类号：
- 收稿：2025-12-04，
  
  录用：2026-03-02，
- 稿件说明：
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谢美昌, 黄海清, 向洪平. 丙烯酸酯改性聚硅氧烷的合成及其紫外光固化性能. 高分子通报, doi: 10.14028/j.cnki.1003-3726.2026.25.354

Xie, M. C.; Huang, H. Q.; Xiang, H. P. Synthesis, UV-curing and properties of acrylated polysiloxane. Polym. Bull. (in Chinese), doi: 10.14028/j.cnki.1003-3726.2026.25.354
谢美昌, 黄海清, 向洪平. 丙烯酸酯改性聚硅氧烷的合成及其紫外光固化性能. 高分子通报, doi: 10.14028/j.cnki.1003-3726.2026.25.354 DOI：

Xie, M. C.; Huang, H. Q.; Xiang, H. P. Synthesis, UV-curing and properties of acrylated polysiloxane. Polym. Bull. (in Chinese), doi: 10.14028/j.cnki.1003-3726.2026.25.354 DOI：

摘要

以八甲基环四硅氧烷(D

)和3-甲基丙烯酰氧基丙基甲基二甲氧基硅烷(KH-571)为原料，通过开环–缩聚法成功制备出紫外光固化丙烯酸酯化聚硅氧烷。通过实时红外光谱(RTIR)、傅里叶变换红外光谱(FTIR)、核磁共振波谱(NMR)和热重分析(TG)等表征手段，系统研究了其分子结构、光聚合动力学、机械性能和热稳定性。实验结果表明，该丙烯酸酯化聚硅氧烷具有快速的光聚合能力，且丙烯酸酯双键转化率随丙烯酰氧基含量的增加而显著提高。同时，样品具有良好的机械性能和热稳定性，且通过调节反应物的配比可有效调控其性能。当聚合物链段中二甲基与丙烯酰氧基的链节数之比15:1时，所制备的样品PSi-15的丙烯酰氧基含量最高，交联程度最大，表现出最佳的拉伸强度(616.32 kPa)；而样品PSi-50丙烯酰氧基含量较低，Si―O―Si柔性链段提供了较好的分子柔顺性，能够在强度与柔韧性之间取得较好的平衡，展现出最佳的韧性(92.31 kJ/m

)。该光固化聚硅氧烷凭借其原料简单、成本低、固化效率高及性能可调的特点，具有广泛的应用前景。

Abstract

A UV-curable acrylated polysiloxane was prepared from octamethylcyclotetrasiloxane (D

) and 3-methacryloxypropylmethyldimethoxysilane (KH-571)

via

ring-opening polycondensation

which is simple

low-cost

and highly efficient. The molecular structure

photopolymerization kinetics

mechanical properties

and thermal stability of the resultant material were systematically investigated using multiple characterization techniques

including real-time infrared spectroscopy (RTIR)

Fourier-transform infrared spectroscopy (FTIR)

nuclear magnetic resonance (NMR) spectroscopy

and thermogravimetric analysis (TG). The experimental results demonstrated that the acrylated polysiloxane possessed excellent

rapid photopolymerization capability

with the double bond conversion rate increasing significantly as the acryloyloxy group content increased. The prepared samples exhibited superior mechanical properties and thermal stability

which could be effectively regulated by adjusting the reactant ratio. Specifically

sample PSi-15

with a methyl-to-acryloyloxy chain segment ratio of 15:1

had the highest acryloyloxy group content and crosslinking degree

thereby exhibiting the optimal tensile strength (616.32 kPa). In contrast

sample PSi-50 had a lower acryloyloxy group content

and the flexible Si―O―Si segments endowed the polymer with good molecular flexibility. At this reactant ratio

the sample achieved a favorable balance between strength and flexibility

showing the best toughness (92.31 kJ/m

). Owing to its readily available raw materials

low cost

high curing efficiency

and tunable performance

this UV-curable polysiloxane has broad application prospects in relevant fields.

关键词

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