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What happens to glass fiber under extreme chemical conditions?
Journal of Non-Crystalline Solids ( IF 3.2 ) Pub Date : 2020-08-04 , DOI: 10.1016/j.jnoncrysol.2020.120331
Dan Xing , Lin Chen , Qing Ma , Bin Hao , Sergey I. Gutnikov , Bogdan I. Lazoryak , Edith Mäder , Peng-Cheng Ma

In this study, the properties of E-glass fiber (GF) (0.5 g) exposed to sulfuric acid (100 mL, cH+=0.1 mol/L) and potassium hydroxide (100 mL, cOH=0.1 mol/L) solutions were studied. The results showed that after acid treatment, the GF was damaged with decreased tensile strength, and spiral cracks developed on the fiber surface. Acid corrosion of the GF was mainly attributed to the depletion of metal ions in the GF, and the ion-depletion-depth model was proposed to explain the mechanism. In the alkali solution, the SiOSi bonds in the network structure of the GF were degraded by the OH ions, resulting in the destruction of the glass network. It formed a corrosion layer with sheet-like nanostructures on the fiber surface, which prevented further attack of alkali ions on the fiber. Comparative results of the tensile strength of the treated GF confirmed that the filament was more susceptible to acid attack than alkali attack.



中文翻译:

在极端化学条件下玻璃纤维会怎样?

在这项研究中,电子玻璃纤维(GF)(0.5 g)暴露于硫酸(100 mL, CH+= 0.1 mol / L)和氢氧化钾(100 mL, CØH-研究了= 0.1 mol / L)溶液。结果表明,酸处理后,玻璃纤维被破坏,拉伸强度降低,纤维表面出现螺旋裂纹。GF的酸腐蚀主要归因于GF中金属离子的消耗,并提出了离子消耗深度模型来解释其机理。在碱溶液中,Ó的Si在GF的网络结构键是由OH降解-离子,导致玻璃网络的破坏。它在纤维表面形成了具有片状纳米结构的腐蚀层,从而防止了碱离子进一步侵蚀纤维。经处理的GF的拉伸强度的比较结果证实,长丝比碱侵蚀更容易受到酸侵蚀。

更新日期:2020-08-04
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