發(fā)布時間：2018-03-24 01:22

  本文選題：重防腐涂料　切入點(diǎn)：工藝參數(shù)優(yōu)化　出處：《華北水利水電大學(xué)》2016年碩士論文

【摘要】：環(huán)氧玻璃鱗片是一種重防腐涂料,尤其是像海洋重防腐領(lǐng)域,它的應(yīng)用對海洋資源的開發(fā)和利用具有很大的促進(jìn)作用。本文主要研究環(huán)氧玻璃鱗片的防腐蝕性能,通過摩擦磨損試驗(yàn)、低溫暴露、鹽霧、紫外老化、附著力、光澤度、耐陰極剝離、電化學(xué)阻抗譜等一系列的測試,研究玻璃鱗片的防腐和耐磨性能,利用正交分析從配方選擇和施工工藝上對涂層材料進(jìn)行研究,使其配方和工藝參數(shù)得到優(yōu)化,涂層材料和性能更加優(yōu)異。結(jié)果表明:壓力0.70~0.75 MPa、走槍速度40~60 cm/s、噴涂距離15~20 cm、物料的初始溫度范圍40~70℃時,涂層的性能較好。環(huán)氧玻璃鱗片的耐磨性較好;耐蝕循環(huán)2400 h后,4種不同環(huán)氧類涂層表面均出現(xiàn)粉化、銹點(diǎn),變色明顯;環(huán)氧玻璃鱗片的結(jié)合力好于其他3種達(dá)到6.7MPa,并且劃線處的起泡數(shù)目最少,單邊擴(kuò)蝕只有2.5 mm,失光率最小。采用正交試驗(yàn)設(shè)計(jì)的方法,對影響玻璃鱗片涂層結(jié)合力、人工循環(huán)老化時間、光澤度和耐磨性的幾個因素進(jìn)行試驗(yàn),以數(shù)理統(tǒng)計(jì)為基礎(chǔ)對試驗(yàn)結(jié)果進(jìn)行計(jì)算和方差分析,結(jié)果表明:玻璃鱗片含量對涂層的性能影響最大,壓力次之,溫度和噴涂距離也有一定的影響;最佳的工藝參數(shù)范圍是:玻璃鱗片含量為15%~30%;壓力范圍為0.7MPa~0.75 MPa;噴涂距離為5cm~20 cm;溫度為50℃~60℃。用電化學(xué)的方法對環(huán)氧玻璃鱗片的耐腐蝕性能進(jìn)行分析,通過分析環(huán)氧玻璃鱗片的EIS阻抗譜、涂層電阻電容的變化、吸水率和特征頻率的變化特點(diǎn),論證了環(huán)氧玻璃鱗片涂層在各個浸泡腐蝕階段的防護(hù)機(jī)理,玻璃鱗片層層分割阻擋了腐蝕介質(zhì)的侵入,有效提高了涂層的耐滲透性。
[Abstract]:Epoxy glass flake is a kind of heavy anticorrosive coating, especially in the field of ocean heavy anticorrosion. Its application can promote the development and utilization of marine resources. Through a series of tests, such as friction and wear test, low temperature exposure, salt spray, ultraviolet aging, adhesion, glossiness, cathodic peeling resistance, electrochemical impedance spectroscopy, etc, the anticorrosion and wear resistance of glass scales were studied. By using orthogonal analysis, the coating material was studied in terms of formula selection and construction process, and its formulation and process parameters were optimized. The results show that the coating properties are better when the pressure is 0.70 ~ 0.75 MPa, the gun speed is 40 ~ 60 cm / s, the spraying distance is 1520 cm, the initial temperature range is 4070 鈩，

本文編號：1656085