本文選題：GFRP + 酸性介質(zhì)　； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：GFRP(Glsss Fiber Reinforced Plastic)是玻璃纖維增強(qiáng)樹脂基復(fù)合材料的英文簡稱。由于其具有質(zhì)量輕、強(qiáng)度高、耐蝕性好、絕緣耐溫性能優(yōu)良等優(yōu)越的性能,在石油天然氣的集輸管道領(lǐng)域被廣泛用。然而作為耐腐蝕性材料的應(yīng)用,近年也出現(xiàn)了玻璃鋼管道腐蝕破損的情況。因?yàn)槲覈^大部分油氣田輸送介質(zhì)為酸性,而且關(guān)于弱酸性介質(zhì)對玻璃鋼管道腐蝕的研究較少,因此進(jìn)行GFRP管材在酸性介質(zhì)中的腐蝕行的研究具有十分重要的意義。本文采用石油集輸管道中常用的酸酐類玻璃纖維增強(qiáng)環(huán)氧樹脂管材作為試驗(yàn)研究對象,以吉林油田提供的三種濃度的石油混合液作為腐蝕介質(zhì),在實(shí)驗(yàn)室條件下通過設(shè)定不同的溫度、壓力及試驗(yàn)周期進(jìn)行了相關(guān)試驗(yàn)。利用Fick模型對材料的吸濕性能進(jìn)行了理論研究,通過掃描電子顯微鏡、紅外光譜、XPS等分析方法對材料的腐蝕行為進(jìn)行了表征,并對腐蝕過程中材料性能的演變規(guī)律進(jìn)行了分析。研究表明,酸酐類玻璃鋼管材的吸濕性能符合Fick擴(kuò)散模型,且溫度對擴(kuò)散系數(shù)的影響最大。腐蝕過程中,材料表面出現(xiàn)了腐蝕現(xiàn)象,經(jīng)分析主要是樹脂基體發(fā)生了一定程度的水解反應(yīng),而纖維及界面未出現(xiàn)明顯的腐蝕。在本文研究時(shí)間范圍內(nèi),隨著腐蝕時(shí)間的延長,除硬度之外,材料的密度及力學(xué)性能等均呈指數(shù)形式下降,并最終接近某一平衡值,這與試驗(yàn)時(shí)間有關(guān)。因此可以采用力學(xué)性能指標(biāo)進(jìn)行材料失效與否的評判。
[Abstract]:GFRP Glsss Fiber reinforced Plastics (GFRP) is an abbreviation for glass fiber reinforced resin matrix composites. Because of its light weight, high strength, good corrosion resistance and excellent insulation and temperature resistance, it is widely used in the field of petroleum and natural gas gathering pipeline. However, as a corrosion resistant material, FRP pipes have been corroded in recent years. Because most of the oil and gas field transport medium in China is acidic, and there is little research on the corrosion of GFRP pipe in the weak acidic medium, it is of great significance to study the corrosion behavior of GFRP pipe in acid medium. In this paper, the commonly used acid anhydride glass fiber reinforced epoxy resin pipe is used as the experimental research object, and three kinds of petroleum mixtures of different concentrations provided by Jilin Oilfield are used as corrosion medium. Experiments were carried out under laboratory conditions by setting different temperatures, pressures and test cycles. The hygroscopicity of the material was studied by Fick model. The corrosion behavior of the material was characterized by scanning electron microscope (SEM) and infrared spectroscopy (IR) XPS, and the evolution of the material properties during the corrosion process was analyzed. The results show that the hygroscopicity of FRP pipes is in accordance with the Fick diffusion model, and the temperature has the greatest influence on the diffusion coefficient. Corrosion occurred on the surface of the material during the corrosion process. The main reason was that the resin matrix was hydrolyzed to a certain extent, but the fiber and the interface were not corroded obviously. In the study time range, with the increase of corrosion time, the density and mechanical properties of the material decrease exponentially except hardness, and finally approach a certain equilibrium value, which is related to the test time. Therefore, mechanical properties can be used to judge the failure of materials.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB332

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本文編號：2012535