Synthesis and Coating Performance of Rapid Room Temperature Moisture Curing Polysilazane

Yong-chao Niu; Tian-hao Li; Ying Lu; Li-jie Liu; Bo Yu; Zhen-yu Wen; Bang-you He; Jun Chen; Yu-jie Song

doi:10.11777/j.issn1000-3304.2025.25116

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Synthesis and Coating Performance of Rapid Room Temperature Moisture Curing Polysilazane

Research Article | 更新时间：2025-10-29

- Synthesis and Coating Performance of Rapid Room Temperature Moisture Curing Polysilazane
- Acta Polymerica Sinica Vol. 56, Issue 11, Pages: 2050-2057(2025)
- 作者机构：
  
  1.江西理工大学材料科学与工程学院赣州 341000
  2.中国科学院宁波材料技术与工程研究所宁波 315201
  3.宁波杭州湾新材料研究院宁波 315336
  4.浙江欣世辰新材料有限公司衢州 324000
- 作者简介：
  
  Tian-hao Li, E-mail: litianhao2057@nimte.ac.cn
  Yu-jie Song, E-mail: songyujie@nimte.ac.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25116
  CLC：
- CSTR：32057.14.GFZXB.2025.7442
- Received：07 May 2025，
  
  Accepted：19 June 2025，
  
  Published Online：26 September 2025，
  
  Published：20 November 2025
- 稿件说明：
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牛勇超, 李天昊, 卢营, 刘丽洁, 余波, 文贞玉, 何邦友, 陈军, 宋育杰. 室温湿气快速固化聚硅氮烷的合成及涂层性能研究. 高分子学报, 2025, 56(11), 2050-2057

Niu, Y. C.; Li, T. H.; Lu, Y.; Liu, L. J.; Yu, B.; Wen, Z. Y.; He, B. Y.; Chen, J.; Song, Y. J. Synthesis and coating performance of rapid room temperature moisture curing polysilazane. Acta Polymerica Sinica, 2025, 56(11), 2050-2057
牛勇超, 李天昊, 卢营, 刘丽洁, 余波, 文贞玉, 何邦友, 陈军, 宋育杰. 室温湿气快速固化聚硅氮烷的合成及涂层性能研究. 高分子学报, 2025, 56(11), 2050-2057 DOI： 10.11777/j.issn1000-3304.2025.25116. CSTR： 32057.14.GFZXB.2025.7442.

Niu, Y. C.; Li, T. H.; Lu, Y.; Liu, L. J.; Yu, B.; Wen, Z. Y.; He, B. Y.; Chen, J.; Song, Y. J. Synthesis and coating performance of rapid room temperature moisture curing polysilazane. Acta Polymerica Sinica, 2025, 56(11), 2050-2057 DOI： 10.11777/j.issn1000-3304.2025.25116. CSTR： 32057.14.GFZXB.2025.7442.

摘要

开发室温湿气快速固化高性能涂层，对于多种基材适配和应用场景拓展具有重要意义. 本研究以有机聚硅氮烷(OPSZ)为基础树脂，通过使用3-氨基丙基三乙氧基硅烷(KH-550)进行修饰，制备了一种室温湿气快速固化的有机聚硅氮烷涂层材料(OPSZ/KH-550). 实验表明，KH-550的引入显著加速了OPSZ在潮湿环境下的水解缩合反应，提高了涂层的固化速度，完全固化时间最快可达到8 h. 涂层在固化过程中形成了―Si―N―和―Si―O―的混合交联网络结构，随着KH-550含量的增加，涂层交联密度提升，力学性能得到提升. 固化后的OPSZ/KH-550涂层仍然保持了OPSZ优异的综合性能，具有高硬度、强附着力、疏水以及防腐蚀的特性.

Abstract

Polysilazane coatings exhibit high crosslinking density

strong adhesion

good anti-aging and anti-permeation performances due to its unique ―Si―N― main chain structure. However

the coating process of high-temperature curing and prolonged curing time limits its practical applications. The development of high-performance coatings capable for rapid room-temperature moisture curing is importance for adapting to diverse substrates and expanding application scenarios. In this work

organic polysilazane coating materials (OPSZ/KH-550) with rapid room temperature moisture curing properties were prepared by chemically modifying organic polysilazane (OPSZ) with 3-aminopropyltriethoxysilane (KH-550). The curing processes were monitored and analyzed by Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimeter (DSC). By analyzing the relative contents of Si―H groups using methyl as an internal standard

the progression of the curing reaction was evaluated. Experimental results demonstrated that the introduction of KH-550 accelerated the hydrolysis and condensation reactions of OPSZ in moisture environment

which could significantly enhance the curing rate of the coatings. The complete curing time could be reduced to as short as 8 h. During the curing process

the Si―H

Si―N and Si―OEt bonds initially underwent hydrolysis reactions to form Si―OH groups. Subsequently

these Si―OH groups participated in condensation reactions to generate Si―O―Si bonds

ultimately forming a hybrid crosslinked network structure containing both ―Si―N― and ―Si―O― bonds. With the increase of KH-550 contents

the crosslinking density improved

leading to better mechanical properties. The cured OPSZ/KH-550 coating showed good comprehensive performance characteristics

including high hardness

strong adhesion

hydrophobicity

and corrosion resistance. These properties endow the rapid room temperature moisture curing polysilazane coating materials with wild application prospects in the field of protective coatings.

关键词

Keywords

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