{首页主词},&

氨基化氧化石墨烯在水性防腐防火一體化涂料中的應(yīng)用

2021-05-06 16:30:40 作者：王娜來(lái)源：材料研究學(xué)報(bào) 分享至：

摘要

用Hummers法制備氧化石墨烯（GO），并用乙二胺對(duì)氧化石墨烯（GO）進(jìn)行氨基化得到氨基化氧化石墨烯（NGO），將季戊四醇磷酸酯（PEPA）、三聚磷酸鋁（ATP）與NGO三者復(fù)配并添加到水性環(huán)氧樹(shù)脂中，制備出水性環(huán)氧防腐防火一體化涂料。使用IR、XRD、SEM等手段對(duì)GO和NGO的結(jié)構(gòu)和形貌進(jìn)行了表征。結(jié)果表明，已經(jīng)制備出GO并成功地對(duì)其表面實(shí)現(xiàn)了氨基化改性。電化學(xué)測(cè)試、鹽霧試驗(yàn)、耐火極限測(cè)試、殘?zhí)啃蚊卜治龊蜔崾е胤治龅慕Y(jié)果表明，顏基比P/B=0.2的復(fù)合涂層具有最佳的防腐性能和防火性能。

關(guān)鍵詞：材料失效與保護(hù) ; 水性環(huán)氧樹(shù)脂 ; 電化學(xué)阻抗譜 ; 氨基化氧化石墨烯 ; 防腐防火涂料

Abstract

The graphene oxide （GO） was prepared by the Hummers method, and then modified with ethylenediamine to obtain aminated graphene oxide （NGO）。 The anti-corrosion and fire-proof waterborne epoxy composite coating was prepared by adding pentaerythritol phosphate （PEPA）， aluminum triphosphate （ATP） and NGO to the waterborne epoxy resin, and then applied on the surface of steel sheet by air spraying method. The structure and morphology of GO and NGO were characterized by IR, XRD and SEM. The performance in anti-resistance and fire-proof resistance of the prepared coatings with different color ratios （pigment/resin ratio: P/B） was further investigated by means of electrochemical test, salt spray test, fire resistance test, residual carbon morphology analysis and thermogravimetric analysis. The results show that the composite coating with the P/B ratio of 0.2 presents the best comprehensive performance in anti-resistance and fire-proof.

Keywords： materials failure and protection ; waterborne epoxy resin ; chemical impedance spectroscopy ; aminated graphene oxide ; anti-corrosion and fire-retardant coating