本文選題：h-BN-KH560 + h-BN-HBP　； 參考：《西南石油大學(xué)》2017年碩士論文

【摘要】：利用無機(jī)納米材料與聚合物制備無機(jī)-聚合物復(fù)合材料是近年來復(fù)合材料研究的熱點(diǎn)之一。BN因其優(yōu)異的物理化學(xué)性能如耐化學(xué)腐蝕、抗高溫性等應(yīng)用于聚合物復(fù)合材料領(lǐng)域,制備高性能的BN-聚合物復(fù)合材料。復(fù)合材料的性能與BN的分散性以及與聚合物之間的界面相容性密切相關(guān)。未經(jīng)處理的BN因其表面惰性,在聚合物中的不均勻分散且與聚合物的相互作用力弱,限制了其性能的發(fā)揮。因此BN的表面改性成為其呈現(xiàn)優(yōu)越性能的關(guān)鍵。本文對BN的表面進(jìn)行改性,制備性能優(yōu)異的BN/EP復(fù)合材料及其復(fù)合涂層,研究BN的不同表面化學(xué)改性對環(huán)氧涂層的抗腐蝕性能的影響。因此,本文對BN表面進(jìn)行修飾,將改性后的材料添加到環(huán)氧樹脂基體中制備復(fù)合涂層,并對復(fù)合涂層的抗腐蝕性能進(jìn)行研究,將從以下三個(gè)方面著手:(1)在h-BN的表面通過多巴胺的作用引入小分子環(huán)氧基團(tuán),制備出h-BN-KH560,研究了表面接枝對環(huán)氧復(fù)合涂層的抗腐蝕性能的影響。結(jié)果表明,表面接枝KH560能改善h-BN與環(huán)氧樹脂之間的相容性,增強(qiáng)與環(huán)氧樹脂之間的相互作用,改善h-BN在環(huán)氧樹脂中的分散性,從而提高環(huán)氧復(fù)合涂層的抗腐蝕性能;(2)在h-BN表面接枝超支化聚合物-聚芳酰胺,制備出h-BN-HBP,成功制備環(huán)氧復(fù)合涂層,并對其進(jìn)行抗腐蝕性能的測試,研究結(jié)果表明超支化改性h-BN能增強(qiáng)h-BN與環(huán)氧樹脂之間的相互作用,增強(qiáng)h-BN在環(huán)氧樹脂的分散性及相容性,進(jìn)而提高BN/環(huán)氧復(fù)合涂層的抗腐蝕性能;(3)利用h-BN的層狀結(jié)構(gòu)以此作為支撐模板,將Fe3O4粒子通過多巴胺的橋聯(lián)作用固定在h-BN表面上,制備h-BN-Fe3O4復(fù)合材料,結(jié)果表明h-BN作為支撐模板有效減少了 Fe3O4的團(tuán)聚,二者對提高環(huán)氧涂層的抗腐蝕性能起到協(xié)同作用。因此,本論文將上訴三種材料以一定比列分別添加到環(huán)氧樹脂中,通過噴涂、固化等過程制備復(fù)合涂層。利用SEM觀察涂層斷面得到h-BN-KH560、h-BN-HBP、h-BN-Fe3O4在環(huán)氧樹脂中的分散情況,結(jié)果表明三種BN復(fù)合材料比h-BN單獨(dú)使用在環(huán)氧樹脂的分散性及相容性均得到大幅度提高。并利用EIS、SEM觀察涂層電極浸泡前后的形貌、高溫高壓試驗(yàn)及鹽霧實(shí)驗(yàn)等手段對復(fù)合涂層的耐腐蝕性能做出測試,結(jié)果表明:添加少量的h-BN-KH560、h-BN-HBP、h-BN-Fe30就能顯著增強(qiáng)環(huán)氧樹脂涂層的抗腐蝕性能。
[Abstract]:The preparation of inorganic polymer composites using inorganic nano-materials and polymers is one of the hot topics in recent years. BN is used in polymer composites for its excellent physical and chemical properties such as chemical corrosion resistance, high temperature resistance and so on. High performance BN-polymer composites were prepared. The properties of the composites are closely related to the dispersibility of BN and the interfacial compatibility between the composites and polymers. Because of its inert surface, the untreated BN is not uniformly dispersed in the polymer and has weak interaction with the polymer, which limits the performance of BN. Therefore, the surface modification of BN is the key to its superior performance. In this paper, the surface of BN was modified and the excellent BN/EP composite and its composite coatings were prepared. The effect of different surface chemical modification of BN on the corrosion resistance of epoxy coating was studied. Therefore, the surface of BN was modified, the modified material was added to the epoxy resin matrix to prepare the composite coating, and the corrosion resistance of the composite coating was studied. The effect of grafting on the corrosion resistance of epoxy composite coating was studied by introducing small molecule epoxy group into the surface of h-BN by dopamine in order to prepare h-BN-KH 560 from the following three aspects. The results show that the surface grafted KH560 can improve the compatibility between h-BN and epoxy resin, enhance the interaction between h-BN and epoxy resin, and improve the dispersion of h-BN in epoxy resin. Therefore, the anticorrosive property of epoxy composite coating was improved by grafting hyperbranched polymer-polyaromamide on the surface of h-BN to prepare h-BN-HBP.The epoxy composite coating was successfully prepared and its corrosion resistance was tested. The results show that the hyperbranched modified h-BN can enhance the interaction between h-BN and epoxy resin, and enhance the dispersion and compatibility of h-BN in epoxy resin. Furthermore, the corrosion resistance of BN/ epoxy composite coating was improved. The layered structure of h-BN was used as the supporting template to immobilize the Fe3O4 particles on the surface of h-BN through the bridging action of dopamine to prepare h-BN-Fe3O4 composites. The results show that h-BN as a supporting template can effectively reduce the agglomeration of Fe3O4 and play a synergistic role in improving the corrosion resistance of epoxy coatings. Therefore, in this paper, three kinds of materials were added to epoxy resin to prepare composite coatings by spraying and curing. The dispersion of h-BN-KH560h-BN-HBP- h-BN-Fe3O4 in epoxy resin was observed by SEM. The results showed that the dispersion and compatibility of the three BN composites were much better than those of h-BN alone. EIS-SEM was used to observe the morphology of the coating electrode before and after immersion, and the corrosion resistance of the composite coating was tested by means of high temperature and high pressure test and salt spray test. The results show that the corrosion resistance of epoxy resin coating can be significantly enhanced by adding a small amount of h-BN-KH560h-BN-HBPnh-BN-Fe30.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB332;TB306

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 周文英;王子君;董麗娜;睢雪珍;;聚合物/BN導(dǎo)熱復(fù)合材料研究進(jìn)展[J];合成樹脂及塑料;2015年02期

2 高建;袁正凱;虞錦洪;陸紹榮;饒保林;江南;;氮化硼納米片/環(huán)氧樹脂復(fù)合材料的制備與熱性能研究[J];絕緣材料;2014年02期

3 劉燕燕;吳耀國;劉凱;于秀菊;;納米二氧化鈦的制備及其在環(huán)氧樹脂改性中的應(yīng)用[J];材料科學(xué)與工程學(xué)報(bào);2011年02期

，

本文編號：1927988