Vinyl Hyperbranched Polysiloxane Modified Release Coating and Its Properties

Ming-yan Zhuang; Yan-dong Wang; Kai Xi

doi:10.11777/j.issn1000-3304.2025.25140

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Vinyl Hyperbranched Polysiloxane Modified Release Coating and Its Properties

Research Article | 更新时间：2025-10-29

- Vinyl Hyperbranched Polysiloxane Modified Release Coating and Its Properties
- Acta Polymerica Sinica Vol. 56, Issue 11, Pages: 2058-2066(2025)
- 作者机构：
  
  南京大学化学化工学院高性能高分子材料与技术教育部重点实验室南京 210023
- 作者简介：
  
  Kai Xi, E-mail: xikai@nju.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25140
  CLC：
- CSTR：32057.14.GFZXB.2025.7451
- Received：02 July 2025，
  
  Accepted：29 July 2025，
  
  Published Online：30 September 2025，
  
  Published：20 November 2025
- 稿件说明：
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庄铭彦, 王延东, 袭锴. 乙烯基超支化聚硅氧烷改性离型涂层及其性能. 高分子学报, 2025, 56(11), 2058-2066

Zhuang, M. Y.; Wang, Y. D.; Xi, K. Vinyl hyperbranched polysiloxane modified release coating and its properties. Acta Polymerica Sinica, 2025, 56(11), 2058-2066
庄铭彦, 王延东, 袭锴. 乙烯基超支化聚硅氧烷改性离型涂层及其性能. 高分子学报, 2025, 56(11), 2058-2066 DOI： 10.11777/j.issn1000-3304.2025.25140. CSTR： 32057.14.GFZXB.2025.7451.

Zhuang, M. Y.; Wang, Y. D.; Xi, K. Vinyl hyperbranched polysiloxane modified release coating and its properties. Acta Polymerica Sinica, 2025, 56(11), 2058-2066 DOI： 10.11777/j.issn1000-3304.2025.25140. CSTR： 32057.14.GFZXB.2025.7451.

摘要

在近几十年中，有机硅涂层已成为应用最广泛的防粘涂层. 其性能主要取决于3个因素：交联密度、表面能和表面粗糙度. 在电子工业快速发展的背景下，开发具有更高机械性能和更好离型性能的离型涂层愈发成为一项挑战. 在本工作中，我们开发了一种用于有机硅离型涂层的乙烯基超支化聚硅氧烷，并将其应用于离型剂配方改性. 结果表明，改性后的离型涂层拉伸强度最高可接近原有的300%，而且更致密的交联网络还提高了离型涂层的稳定性，并显著减少了聚合物链段从涂层到压敏胶的迁移，从而使剥离力低至13.84 g/25mm，并具有96.2%的高残余黏着率. 本工作也探究了交联结构的变化对剥离力、表面粗糙度和表面能的影响. 此外，热重分析结果显示改性离型剂具有良好的热稳定性，表明其在工业应用中具有广阔的应用前景.

Abstract

Release coating is an essential specialty antifouling coating used in industrial processes

primarily for isolating and separating two interfaces. Currently

commercial release agents fall into three main categories: silicone

fluorine-containing

and non-silicon. Silicone release agents are the most widely used due to their excellent performance and relatively low cost. However

fluorine-containing and non-silicon release agents are hindered in their application to more fields due to various use restrictions. As industrial technology continues to develop and the need for higher-performance products increases

release coatings

which are in direct contact with products

must also continuously improve their performance to meet process requirements. The domestic release agent market is mainly monopolized by foreign companies such as Dow Corning and Wacker Chemie. Although domestic enterprises have recently started to develop such products

their performance is still poor. Therefore

it is necessary to develop higher-performance release coatings and study the formula and structure of release agents to break the technical blockade imposed by foreign enterprises and design new release agent formulas. Based on this

the mechanical and thermal properties of the release coating were effectively improved by introducing hyperbranched vinyl polysiloxane (HPVSi)

a resin with low viscosity

high density of functional groups

and spherical topology. The effects of crosslinking density

surface roughness

and surface energy on the peeling force of the release coating were also studied. The results showed that the modified release coatings exhibited tensile strengths that approach 400% of the initial value. The denser crosslinked network enhanced the stability of the release coatings and substantially reduces the migration of polymer chain from the coatings to the pressure-sensitive adhesive. This resulted in a peel force as low as 13.84 g/25mm and a high residual adhesion rate of 96.2%. This study also explored the effect of changes in crosslinking structure on peel force

surface roughness

and surface energy. Furthermore

thermogravimetric analysis demonstrated that the modified release agent exhibited good thermal stability

indicating its potential for industrial applications.

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