Preparation and Properties of Ultra-Smooth Surfaces of Polyimide Composites

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2024-05-31 DOI:10.1134/S156009042460027X

Yawen Guo, Lielun Zhao, Tiantai Kang, Yan Jiang, Haobin Zhang, Hongwen Zhang

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Abstract

In this paper, TiO₂ particles submicron were prepared by sol-gel method and modified with 3-aminopropyl triethoxysilane (KH550) after coating SiO₂ on its surface. Subsequently, combined with the breath figure method (BF), slippery liquid-infused porous surfaces (SLIPS) of polyimide composites were prepared by a two-step method using TiO₂/SiO₂ particles, amino terminated polysiloxanes (APT-PDMS), 2,2'-bis[4-(4-aminophenoxyphenyl)]propane (BAPP) and 1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA) as the raw materials. The compositions and properties of the composites were characterized by infrared spectroscopy, nuclear magnetic resonance and thermal weight loss, respectively. The apparent morphology of the porous membrane was observed by scanning electron microscopy, and the hydrophobic properties of the porous membrane were investigated before and after the infilling of the silicone oil by contact angle tester. The results show that the hydrophobicity of the porous substrate prepared when the content of TiO₂/SiO₂ particles is 15% and the concentration of composite material is 20 mg/mL is the best, and the sliding angle of the oil-filled SLIPS is 2° at the minimum. The SLIPS owns good stability, self-cleaning, and anti-freezing properties and so on.

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聚酰亚胺复合材料超光滑表面的制备与性能

摘要本文采用溶胶-凝胶法制备了亚微米级TiO2颗粒，并在其表面涂覆SiO2后用3-氨丙基三乙氧基硅烷（KH550）对其进行改性。随后，结合呼吸图法（BF），以 TiO2/SiO2 颗粒、氨基端聚硅氧烷（APT-PDMS）、2,2'-双[4-(4-氨基苯氧基苯基)]丙烷（BAPP）和 1,2,4,5-环己烷四羧酸二酐（HPMDA）为原料，通过两步法制备了聚酰亚胺复合材料的滑液注入多孔表面（SLIPS）。复合材料的成分和性质分别通过红外光谱、核磁共振和热失重法进行了表征。用扫描电子显微镜观察了多孔膜的表观形貌，并用接触角测试仪研究了硅油填充前后多孔膜的疏水性能。结果表明，TiO2/SiO2 颗粒含量为 15%、复合材料浓度为 20 mg/mL 时制备的多孔基底疏水性最好，充油 SLIPS 的滑动角最小为 2°。这种 SLIPS 具有良好的稳定性、自洁性和抗冻性等。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Science, Series B 化学-高分子科学

CiteScore

1.80

自引率

8.30%

发文量

审稿时长

>0 weeks

期刊介绍： Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed