OG-POSS 可协同增强硅树脂热保护涂层底漆的耐腐蚀性和附着性

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2024-10-09 DOI:10.1016/j.reactfunctpolym.2024.106066

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引用次数: 0

摘要

将八缩水甘油二甲基硅氧烷（OG-POSS）与正硅酸四乙酯、正硅酸四丙酯和正硅酸四丁酯混合溶液配合应用于金属基材和硅树脂热保护涂层的粘接。通过扫描电子显微镜（SEM）、盐雾试验、热重红外光谱（TGA-IR）和背温试验，系统研究了添加 OG-POSS 对底漆界面的影响。结果表明，OG-POSS 的添加有利于底漆硅烷膜的形成，使膜更加致密和连续。同时，硅烷膜具有优异的耐腐蚀性和附着力，最大附着力约为 1.42 兆帕。此外，OG-POSS 还在底漆中形成了独特的 Si-O-Si 笼结构，提高了界面层的抗烧蚀性，防止了涂层在恶劣环境下的降解和剥落。

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OG-POSS synergistically enhances the corrosion resistance and adhesion property of primer for silicone resin thermal protective coating

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OG-POSS synergistically enhances the corrosion resistance and adhesion property of primer for silicone resin thermal protective coating

Octaglycidyldimethylsilyl polyhydric silsesquioxane (OG-POSS) in coordination with tetraethyl orthosilicate, tetrapropyl orthosilicate and tetrabutyl orthosilicate mixed solution was applied to the bonding of metal substrate and silicone resin thermal protective coating. The influence of OG-POSS addition on the interface of primer was systematically investigated by means of scanning electron microscope (SEM), salt spray test, thermogravimetric infrared spectroscopy (TGA-IR) and back temperature test. Results showed that the addition of OG-POSS favored the formation of a silane film of the primer, resulting in a more compact and continuous film. At the same time, the silane film had excellent corrosion resistance and adhesion, with a maximum adhesion strength of about 1.42 MPa. In addition, OG-POSS provided a unique Si-O-Si cage structure in the primer, which improved the ablation resistance of the interface layer, preventing the degradation and peeling of the coating in harsh environments.

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.