关振威,张玉忠,周锴,李静.耐高温冲击无机-有机杂化纳米防腐涂层制备及性能研究[J].表面技术,2018,47(5):172-176.
GUAN Zhen-wei,ZHANG Yu-zhong,ZHOU Kai,LI Jing.Preparation and Property of Inorganic-Organic Hybrid Nano-coatings for Thermal Shock and Anti-corrosion Protection[J].Surface Technology,2018,47(5):172-176 |
| 耐高温冲击无机-有机杂化纳米防腐涂层制备及性能研究 |
| Preparation and Property of Inorganic-Organic Hybrid Nano-coatings for Thermal Shock and Anti-corrosion Protection |
| 投稿时间：2017-12-25 修订日期：2018-05-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.05.026 |
| 中文关键词: 无机有机杂化涂层 纳米填料 防腐涂层 电子束焊接 高温冲击 水性涂料 |
| 英文关键词:inorganic/organic hybrid coating nano fillers anti-corrosion coatings electron-beam welding thermal shock waterborne coating |
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| 目的 制备一种兼具腐蚀防护与耐高温冲击的涂层材料。方法 以无机硅酸盐和有机硅乳液为成膜物，纳米氧化锆分散液和水性铝粉浆为耐热填料，配合防腐颜料和助剂，制备出了耐高温冲击防腐涂料。通过扫描电子显微镜、中性盐雾测试、耐温性测试和耐电子束焊接测试，分别评价耐高温冲击防腐涂料涂覆后的微观形貌、对高强度合金钢的腐蚀防护能力、长期耐高温性能和耐瞬时高温冲击性。调整无机/有机树脂比例，对比腐蚀防护性与耐温性的相关关系。结果 以纯无机树脂为成膜物，涂层的耐温性可达700 ℃，但防腐性能较差，耐中性盐雾时间低于24 h。以纯有机树脂为成膜物，涂层的耐温性为400 ℃，耐中性盐雾时间大于336 h。以无机/有机质量比为2:1制备的杂化纳米涂层的耐温性为700 ℃，耐中性盐雾时间为168 h。纳米填料以分散液为载体进行添加后，可以在涂料中形成较好的分散，成膜后陶瓷填料依旧保持纳米尺度，涂层的耐温度冲击性得到了较大提升，在电子束焊接热冲击后，涂层形貌完整。结论 无机/有机树脂的合适质量比可以在有效提高涂层防腐性能的同时保持涂层的耐温性，纳米氧化锆以分散液的形式加入，可以提高涂层的耐高温冲击性，该涂层可以用于高强度钢的焊接防护。 |
| 英文摘要: |
| The work aims to fabricate hybrid coatings for thermal shock and anti-corrosion protection. The anti-corrosion thermal shock protection coatings were prepared by taking inorganic silicate and organic silicone emulsion as binder and nano Zirconium oxide dispersions and aluminium pastes as thermal pigments and mixing anti-corrosion pigments and additives. SEM, salt spray test, thermal test, and electron-beam welding (EBW) test were respectively taken to evaluate morphology, corrosion resistance for high-strength alloy steel, long term thermal resistance and flash thermal shock properties. Relationship between corrosion and thermal resistance was studied and compared by adjusting ratio of inorganic resin and organic resin. With pure inorganic resin as binder, the thermal resistance of coatings was up to 700 ℃, but the anticorrosion was poor and the salt spray resistance time was less than 24 h. With pure organic resin as binder, the thermal resistance of coatings was up to 400 ℃ and the salt spray resistance time was more than 336 h. For hybrid nano-coatings prepared by inorganic/organic mass in ratio of 2:1, the thermal resistance was up to 700 ℃ and salt spray resistance time was 168 h, Nano-filler was dispersed in the coating when added with dispersion liquid as carrier. Ceramic filler was still in binder in nanoscale after film formation. The thermal shock resistance was improved dramatically and the coating morphology was complete after the thermal shock of electron beam welding. Anticorrosion performance and thermal resistance of coatings can be improved and maintained by choosing appropriate inorganic/organic resin ratio. The thermal shock protection can be strengthened by adding nano Zironium oxide in dispersion liquid. Such coatings can be used in protection of high-tensile steel under EBW. |
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