本文選題：金屬腐蝕防護 + 硅烷化處理�。� 參考：《長春工業(yè)大學》2015年碩士論文

【摘要】：鋼鐵是重要的結(jié)構(gòu)工程材料,應(yīng)用領(lǐng)域極其廣泛。當鋼鐵處于應(yīng)用環(huán)境中時,會受到腐蝕介質(zhì)對其造成的腐蝕破壞。由于鋼鐵的腐蝕會對社會的生產(chǎn)生活造成巨大的經(jīng)濟損失,甚至埋下重大的安全隱患,因此,開發(fā)鋼鐵腐蝕防護體系對于其工業(yè)應(yīng)用具有重要意義。目前,金屬表面防護效果最好的技術(shù)是鉻酸鹽鈍化技術(shù)以及磷酸鹽轉(zhuǎn)化膜技術(shù)。但這兩種技術(shù)因為毒性大、耗能高、污染環(huán)境,已不適應(yīng)現(xiàn)代工業(yè)的發(fā)展方向。因此,近年來出現(xiàn)的有機硅烷化處理技術(shù)——一種新型節(jié)能環(huán)保技術(shù)得以快速發(fā)展。將有機硅烷化處理技術(shù)應(yīng)用于金屬表面防護,得到了世界各國科學家和工程師的廣泛研究和關(guān)注,雖已取得一定成果,部分技術(shù)已得到工業(yè)應(yīng)用,如汽車涂裝生產(chǎn)線。但對硅烷試劑的水解條件與失效的研究還有待于進一步研究。本論文針對當前鋼鐵表面硅烷化處理工藝中存在的問題及現(xiàn)狀,在前人研究的基礎(chǔ)上,選用乙烯基三乙酰氧基硅烷(VTAS)和雙-三乙氧基硅丙基胺(BTSPA)這兩種硅烷偶聯(lián)劑,研究了適用于鋼鐵的硅烷試劑水解工藝條件,對成膜工藝條件進行了優(yōu)化。通過電化學測試確定了硅烷水解條件為：BTSPA硅烷最佳水解條件：硅烷含量3mL,醇水比20：80,pH 7,溫度20℃；BTSPA和VTAS混合硅烷最佳水解條件：硅烷含量8mL,醇水比80：15,pH4,溫度25℃。成膜工藝條件為：浸涂時間為60秒,固化溫度為100℃,固化時間為30分鐘。涂覆后的鋼片表面耐蝕性能明顯提高。
[Abstract]:Steel is an important structural engineering material, which is widely used in many fields. When steel is in application environment, it will be damaged by corrosion medium. Since the corrosion of iron and steel will cause huge economic loss to the production and life of the society, and even bury a great hidden danger of safety, it is of great significance to develop the corrosion protection system of iron and steel for its industrial application. At present, chromate passivation and phosphate conversion film are the most effective technologies for metal surface protection. However, these two technologies are not suitable for the development of modern industry because of their high toxicity, high energy consumption and environmental pollution. Therefore, the organic silane treatment technology, a new energy-saving and environmental protection technology, has been developed rapidly in recent years. The application of organosilane treatment technology to metal surface protection has been extensively studied and concerned by scientists and engineers all over the world. Although certain achievements have been made, some of the technologies have been applied in industry, such as automobile coating production line. However, the hydrolysis conditions and failure of silane reagents need to be further studied. In this paper, aiming at the existing problems and present situation of silane treatment on steel surface, two silane coupling agents, vinyl triacetylsilane (VTAS) and bis-triethoxysilylpropylamine (BTSPA), were selected on the basis of previous studies. The hydrolysis conditions of silane reagents suitable for iron and steel were studied and the process conditions of film formation were optimized. The optimum hydrolysis conditions of silane were determined by electrochemical test: the content of silane was 3 mL, the ratio of alcohol to water was 20: 80, pH 7, and the temperature was 20 鈩，

本文編號：1862852