本文關(guān)鍵詞： 水性環(huán)氧樹脂 乳化瀝青 試驗方法 粘結(jié)強(qiáng)度 相結(jié)構(gòu)　出處：《重慶交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：冷拌瀝青路面技術(shù)可在常溫下生產(chǎn)、施工,節(jié)能減排,綠色環(huán)保,但其路用性能相對于熱拌瀝青路面技術(shù)還有一定的差距,無法適應(yīng)我國的交通水平。將水性環(huán)氧樹脂乳液與乳化瀝青共混,期望制備出的水性環(huán)氧-乳化瀝青復(fù)合材料既保持乳化瀝青的諸多優(yōu)秀特性,又具有水性環(huán)氧樹脂的高粘結(jié)力,以滿足我國的高等級公路乃至重載交通的應(yīng)用要求。本文首先選用兩種化學(xué)接枝法制備的水性環(huán)氧樹脂,對其固化過程影響因素進(jìn)行研究,探討了水性環(huán)氧樹脂固化成膜的相關(guān)試驗方法,結(jié)果表明,水性環(huán)氧樹脂固化好壞的關(guān)鍵在于薄膜中的水分能否散失;剛性環(huán)氧固化后強(qiáng)度較高,但存在常溫難以破乳、固化后水分包裹于薄膜之中的問題;柔性環(huán)氧易破乳,固化后薄膜無水分殘留,固化強(qiáng)度較剛性環(huán)氧略低。經(jīng)比較后,選擇柔性水性環(huán)氧樹脂,采用自乳化和混合兩種方法制備水性環(huán)-乳化瀝青復(fù)合材料。自乳化法制備結(jié)果并不理想,所得水性環(huán)氧-乳化瀝青穩(wěn)定性差,不能較長時間貯存�；旌戏▽⑺原h(huán)氧樹脂分別與陰離子乳化瀝青和陽離子乳化瀝青共混復(fù)配,結(jié)果表明,水性環(huán)氧樹脂與陰離子乳化瀝青的相容性較陽離子乳化瀝青要好。對水性環(huán)氧-陰離子乳化瀝青復(fù)合材料在不同影響因素下進(jìn)行性能測試表征。結(jié)果表明:固化溫度對水性環(huán)氧-乳化瀝青的影響主要在與前期的固化速度及強(qiáng)度增長速度,對其最終強(qiáng)度影響不大;水性環(huán)氧-乳化瀝青的最終粘結(jié)強(qiáng)度隨水性環(huán)氧摻量的增加而提高;在水性環(huán)氧完全固化后,水性環(huán)氧-乳化瀝青的粘結(jié)強(qiáng)度隨著時間推移仍有小幅度增長。使用熒光顯微鏡觀察水性環(huán)氧-乳化瀝青的微觀結(jié)構(gòu)并進(jìn)行數(shù)字圖像表征,結(jié)果顯示:本文所述的水性環(huán)氧-乳化瀝青為二相體系,瀝青為連續(xù)相,環(huán)氧為分散相;對玻璃、瀝青、水泥三種不同基材界面,環(huán)氧相分布均勻,縱向無分層;水性環(huán)氧樹脂在水性環(huán)氧-乳化瀝青薄膜固化過程中有自行團(tuán)聚的現(xiàn)象,固化溫度越低,固化后環(huán)氧樹脂團(tuán)聚越明顯;本文所選用的乳化瀝青和水性環(huán)氧樹脂相容性并不最優(yōu),水性環(huán)氧樹脂在該體系下固化后不能理想的交聯(lián)成網(wǎng)。
[Abstract]:Cold mix asphalt pavement technology can be produced at room temperature, construction, energy saving and emission reduction, green environmental protection, but its road performance compared with the hot mix asphalt pavement technology there is a certain gap. The waterborne epoxy resin emulsion and emulsified asphalt blend can not meet the traffic level in China. The waterborne epoxy emulsified asphalt composite material can not only keep many excellent properties of emulsified asphalt. The waterborne epoxy resin has high adhesion to meet the application requirements of high grade highway and even heavy traffic in China. In this paper, two kinds of chemical grafted epoxy resin were first used to prepare waterborne epoxy resin. The influencing factors of curing process were studied, and the relative test methods of curing film of waterborne epoxy resin were discussed. The results showed that the key of curing waterborne epoxy resin was whether the moisture in the film could be lost. The strength of rigid epoxy resin is high, but it is difficult to demulsify at room temperature. Flexible epoxy resin is easy to demulsify, and the cured film has no moisture residue, and the curing strength is slightly lower than that of rigid epoxy resin. After comparison, flexible waterborne epoxy resin is selected. Waterborne cyclized asphalt composites were prepared by self-emulsification and mixing. The results of self-emulsification were not satisfactory and the stability of waterborne epoxy-emulsified asphalt was poor. Water borne epoxy resin was mixed with anionic emulsified asphalt and cationic emulsified asphalt respectively by mixing method. The compatibility of waterborne epoxy resin and anionic emulsified asphalt is better than that of cationic emulsified asphalt. The effect of curing temperature on waterborne epoxy-emulsified asphalt is mainly related to the curing rate and strength growth rate. It has little effect on the ultimate strength; The ultimate bond strength of waterborne epoxy emulsified asphalt increases with the increase of the content of waterborne epoxy resin. After the waterborne epoxy is completely cured. The bond strength of waterborne epoxy emulsified asphalt increases slightly with time. The microstructure of waterborne epoxy emulsified asphalt is observed by fluorescence microscope and characterized by digital image. The results show that the waterborne epoxy emulsified asphalt is a two-phase system, the asphalt is a continuous phase, and the epoxy is a dispersed phase. For glass, asphalt, cement three different substrate interface, epoxy phase distribution is uniform, longitudinal no delamination; Waterborne epoxy resin has the phenomenon of self-agglomeration during the curing process of waterborne epoxy-emulsified asphalt film. The lower the curing temperature, the more obvious the agglomeration of epoxy resin after curing. The miscibility of emulsified asphalt and waterborne epoxy resin is not optimal in this paper.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U414

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本文編號：1449946