【摘要】：混凝土腐蝕破壞發(fā)生在基礎(chǔ)建筑、道路橋梁、水利水電、海洋工程等各個領(lǐng)域之中,腐蝕不但造成巨大的經(jīng)濟損失,而且威脅著人類生命財產(chǎn)安全,因此開展混凝土結(jié)構(gòu)防腐蝕的研究對國民經(jīng)濟建設(shè)和國防建設(shè)有重大意義。本論文以不同的反應(yīng)型溶劑作為環(huán)氧樹脂的分散介質(zhì),分別制備了糠醛/丙酮/環(huán)氧基滲入固結(jié)型防腐材料、甲基異丁基酮/環(huán)氧基滲入固結(jié)型防腐材料、無溶劑環(huán)氧防腐涂料。本文的主要研究內(nèi)容和結(jié)果如下:第一,使用糠醛丙酮反應(yīng)型溶劑制備了糠醛/丙酮/環(huán)氧基滲入固結(jié)型防腐材料并對其基礎(chǔ)物理性能,滲透性能,耐腐蝕性能進(jìn)行研究。研究結(jié)果表明:糠醛/丙酮/環(huán)氧基滲入固結(jié)型防腐涂層具有優(yōu)異的基礎(chǔ)物理性能,涂層干濕粘接強度高達(dá)10.9MPa及6.9MPa,對砂漿有明顯的增強作用。材料與砂漿具有良好的潤濕性能,能夠滲透于砂漿表面3.5mm深。通過對材料與砂漿的滲透性能研究,發(fā)現(xiàn)材料與砂漿之間的潤濕性能大于大部分粘度較小的有機溶劑。涂層具有良好的耐腐蝕性能,在10%的氫氧化鈉溶液及5%的硫酸溶液中浸泡28天涂層完好無損。第二,酮類化合物與伯胺能夠縮合成酮亞胺,因而環(huán)氧樹脂、胺類化合物與酮類化合物兩兩之間均能夠發(fā)生縮合反應(yīng)最終形成大分子。本論文研究了不同酮類化合物在三者的縮合反應(yīng)體系中的反應(yīng)活性,最終選用反應(yīng)活性及滲透性兼顧的甲基異丁基酮作為環(huán)氧樹脂的反應(yīng)型溶劑制備出甲基異丁基酮/環(huán)氧基滲入固結(jié)型防腐材料。研究了不同縮水甘油醚及其用量對材料性能的影響、不同類型固化劑對材料性能的影響及通過羥醛縮合改性對材料性能的影響。研究結(jié)果表明:甲基異丁基酮/環(huán)氧基滲入固結(jié)型防腐材料均具有良好的透明性,其透光率高達(dá)80%。而使用腰果酚醛胺型復(fù)合固化劑固化的涂層基礎(chǔ)物理性能、滲透性能及耐腐蝕性能均較好。在上述基礎(chǔ)上,使用雙官能度縮水甘油醚并且與甲基異丁基酮復(fù)合比例為1/2時所得到的涂層配方綜合性能最佳。第三,使用縮水甘油醚類反應(yīng)型溶劑A作為環(huán)氧樹脂的分散介質(zhì),制備出了無溶劑環(huán)氧防腐涂料,并對其基礎(chǔ)物理性能及耐腐蝕性能進(jìn)行研究。研究結(jié)果表明:無溶劑環(huán)氧防腐涂料具有良好的基礎(chǔ)物理性能及耐腐蝕性能,其涂層性能還得到了第三方檢測機構(gòu)的認(rèn)證。本論文還針對涂料的施工工藝進(jìn)行了研究,在某養(yǎng)殖池中進(jìn)行現(xiàn)場施工,對糠醛/丙酮/環(huán)氧基滲入固結(jié)型防腐涂料及無溶劑環(huán)氧防腐涂料的施工工藝進(jìn)行了完善。
[Abstract]:Concrete corrosion damage occurs in many fields, such as basic construction, road and bridge, water conservancy and hydropower, ocean engineering and so on. Corrosion not only causes huge economic losses, but also threatens the safety of human life and property. Therefore, it is of great significance for national economy construction and national defense construction to carry out the research on corrosion prevention of concrete structure. In this paper, different reactive solvents were used as dispersing medium to prepare furfural / acetone / epoxy group infiltrated and consolidated anticorrosive materials, and methyl isobutyl ketone / epoxy group infiltrated and consolidated anticorrosive materials. Solventless epoxy anticorrosive coating. The main contents and results of this paper are as follows: firstly, furfural / acetone / epoxy group infiltrated and consolidated anticorrosive materials were prepared with furfural acetone reactive solvent and their basic physical properties, permeability and corrosion resistance were studied. The results show that furfural / acetone / epoxy group infiltrated and consolidated anticorrosive coating has excellent basic physical properties. The dry and wet bonding strength of the coating is as high as 10.9MPa and 6.9 MPA respectively. The material has good wettability with mortar and can penetrate deep 3.5mm on mortar surface. It is found that the wettability between the material and the mortar is higher than that of most organic solvents with low viscosity through the study of the permeability of the material and mortar. The coating has good corrosion resistance. The coating soaked in 10% sodium hydroxide solution and 5% sulfuric acid solution for 28 days is intact. Secondly, ketone compounds and primary amines can be condensed to form keto-imine, so epoxy resin, amine compounds and ketones can be condensed to form macromolecules. In this paper, the reactivity of different ketones in the condensation reaction system was studied. Finally methyl isobutyl ketone with both reactive activity and permeability was selected as the reactive solvent of epoxy resin to prepare methyl isobutyl ketone / epoxy group infiltrated and consolidated anticorrosive material. The effects of different glycidyl ethers and their contents on the properties of the materials, the effects of different curing agents on the properties of the materials and the effects of the condensation modification of hydroxyl aldehyde on the properties of the materials were studied. The results show that the penetration of methyl isobutyl ketone / epoxy group has good transparency and its transmittance is as high as 80%. The basic physical properties, permeability and corrosion resistance of the coatings cured with cashew phenolic amine compound curing agent were better. On the above basis, the composite properties of the coating obtained by using difunctional glycidyl ether and the ratio of 1 / 2 with methyl isobutyl ketone are the best. Thirdly, a solventless epoxy anticorrosive coating was prepared by using glycidyl ether reactive solvent A as the dispersing medium of epoxy resin, and its basic physical properties and corrosion resistance were studied. The results show that the solventless epoxy anticorrosive coating has good basic physical properties and corrosion resistance. In this paper, the application technology of coating was studied, and the field construction of furfural / acetone / epoxy group infiltrating and consolidation coating and solventless epoxy anticorrosive coating were improved.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU528

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