本文關(guān)鍵詞： 玄武巖 復(fù)合材料 表面處理 上漿 界面　出處：《東華大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：玄武巖纖維（BF）是一種無(wú)機(jī)礦物纖維，具有優(yōu)異的力學(xué)性能、耐高溫、耐酸堿、對(duì)環(huán)境無(wú)污染等一系列優(yōu)良性能。從而以其為增強(qiáng)體制成的復(fù)合材料，廣泛應(yīng)用于航空航天、建筑、農(nóng)業(yè)等軍工和民用領(lǐng)域。但是，由于玄武巖纖維表面光滑且表面呈現(xiàn)化學(xué)惰性，作為樹(shù)脂基復(fù)合材料的增強(qiáng)體時(shí)與樹(shù)脂的粘附性及浸潤(rùn)性差，使得復(fù)合材料無(wú)法充分發(fā)揮玄武巖纖維的力學(xué)性能優(yōu)勢(shì)。因此，，對(duì)該纖維進(jìn)行表面處理以改善復(fù)合材料的界面性能具有重要意義。 本文采用紅外光譜和X射線熒光光譜分析玄武巖纖維表面原有上漿劑成分，設(shè)計(jì)了三種去膠方案并驗(yàn)證去膠效果的好壞；采用五種新型水性乳液型上漿劑，沒(méi)有上漿劑3個(gè)用量，對(duì)玄武巖織物進(jìn)行上漿處理；采用手糊成型方式，將未處理和處理后的玄武巖纖維制成玄武巖/環(huán)氧樹(shù)脂復(fù)合材料，并對(duì)其進(jìn)行拉伸，彎曲，沖擊等力學(xué)實(shí)驗(yàn)，從宏觀力學(xué)角度評(píng)價(jià)和分析表面處理對(duì)復(fù)合材料力學(xué)的影響； 結(jié)果表明：經(jīng)過(guò)上漿劑表面處理之后，玄武巖/環(huán)氧樹(shù)脂復(fù)合材料的拉伸強(qiáng)度明顯提升而模量略有下降；彎曲強(qiáng)度和沖擊強(qiáng)度均未上升，與未處理基本持平，而彎曲模量和沖擊模量略有下降。說(shuō)明上漿劑在纖維表面和樹(shù)脂間形成了柔性界面，改善了復(fù)合材料的拉伸性能。但對(duì)彎曲和沖擊性能的改善并不明顯。其中，HA50c-5%, HA50c-10%兩種組合效果最好。
[Abstract]:Basalt fiber (BF) is an inorganic mineral fiber with excellent mechanical properties, high temperature resistance, acid and alkali resistance, no pollution to the environment and so on. Widely used in aerospace, construction, agriculture and other military and civil fields. However, due to the smooth surface of basalt fiber and the surface of chemical inertia. As the reinforcements of resin matrix composites, the adhesion and wettability of resin are poor, which makes the composites unable to give full play to the advantages of the mechanical properties of basalt fibers. It is of great significance to improve the interfacial properties of the composite by surface treatment of the fiber. In this paper, infrared spectrum and X-ray fluorescence spectrum are used to analyze the original sizing agent composition on basalt fiber surface, three kinds of degumming schemes are designed and the effect of degumming is verified. The basalt fabric was sizing with five new waterborne emulsion sizing agents without three dosage of sizing agent. The untreated and treated basalt fibers were made into basalt / epoxy resin composites by hand paste molding, and tensile, flexural and impact mechanical experiments were carried out. The effect of surface treatment on the mechanical properties of composites was evaluated and analyzed from the viewpoint of macroscopic mechanics. The results show that the tensile strength of basalt / epoxy resin composites increases obviously and the modulus decreases slightly after surface treatment. The flexural strength and impact strength did not increase, but the flexural modulus and impact modulus decreased slightly, indicating that the sizing agent formed a flexible interface between the fiber surface and the resin. The tensile properties of the composites were improved, but the bending and impact properties of the composites were not obviously improved. The combination of HA50c-5 and HA50c-10% was the best.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB332

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