本文關(guān)鍵詞：有機(jī)蒙脫土對(duì)玻璃纖維的表面改性研究　出處：《華東理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

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【摘要】：玻璃纖維增強(qiáng)聚合物復(fù)合材料因其具有優(yōu)異的性能而被廣泛應(yīng)用于汽車制造、航空航天、軌道交通、建筑、風(fēng)力發(fā)電等各大領(lǐng)域。復(fù)合材料界面是影響其性能的重要因素,為改善玻璃纖維復(fù)合材料的界面性能,本文采用在玻璃纖維表面沉積有機(jī)蒙脫土片層的方式對(duì)玻璃纖維進(jìn)行表面改性,系統(tǒng)研究了有機(jī)蒙脫土的剝離及其在分散介質(zhì)中的穩(wěn)定性、剝離的蒙脫土在玻璃纖維表面的沉積、沉積蒙脫土的玻璃纖維與環(huán)氧樹脂及聚丙烯復(fù)合材料的界面性能。結(jié)果表明：超聲波處理有利于有機(jī)蒙脫土穩(wěn)定分散于分散介質(zhì)中,且隨超聲波作用時(shí)間增長穩(wěn)定性不斷提高；SEM顯示超聲波作用有利于有機(jī)蒙脫土在玻璃纖維表面大量且均勻的沉積,超聲波作用下沉積時(shí)間以30min為宜；相較于酸性分散體系,有機(jī)蒙脫土在中性條件下穩(wěn)定性良好,能較均勻的沉積于玻璃纖維表面,但沉積量較少。在分散介質(zhì)中添加KH550偶聯(lián)劑有利于有機(jī)蒙脫土在玻璃纖維表面的沉積,偶聯(lián)劑的濃度以1%為宜。有機(jī)蒙脫土在玻璃纖維表面的沉積量對(duì)界面粘結(jié)強(qiáng)度有影響,界面剪切強(qiáng)度隨玻璃纖維表面有機(jī)蒙脫土沉積量的增加呈現(xiàn)先增加后降低的趨勢。玻璃纖維經(jīng)加入KH550偶聯(lián)劑的有機(jī)蒙脫土分散液處理可與環(huán)氧樹脂及聚丙烯樹脂形成良好的界面結(jié)合,與環(huán)氧樹脂的復(fù)合材料其界面剪切強(qiáng)度增加38.87%,與聚丙烯的復(fù)合材料其界面剪切強(qiáng)度增加106.79%。
[Abstract]:Glass fiber reinforced polymer composites have been widely used in automobile manufacturing, aerospace, rail transit, construction because of their excellent properties. The interface of composite is an important factor to affect the properties of glass fiber composites, so it can improve the interfacial properties of glass fiber composites. In this paper, organic montmorillonite layer was deposited on the surface of glass fiber to modify the surface of glass fiber. The peeling of organic montmorillonite and its stability in disperse medium were studied systematically. The deposition of exfoliated montmorillonite on the surface of glass fibers. The interfacial properties of glass fiber deposited montmorillonite with epoxy resin and polypropylene composites. The results show that ultrasonic treatment is beneficial to the stable dispersion of organic montmorillonite in the dispersion medium. And the stability increases with the time of ultrasonic wave. SEM showed that ultrasonic wave was beneficial to the deposition of organic montmorillonite on glass fiber surface, and the appropriate deposition time was 30 minutes. Compared with the acidic dispersion system, organic montmorillonite has good stability under neutral conditions and can be deposited on the surface of glass fiber uniformly. The addition of KH550 coupling agent in the dispersion medium is beneficial to the deposition of organic montmorillonite on the surface of glass fiber. The suitable concentration of coupling agent is 1%. The amount of organic montmorillonite deposited on the surface of glass fiber has an effect on the interfacial bond strength. The interfacial shear strength increased firstly and then decreased with the increase of the amount of organic montmorillonite deposited on glass fiber surface. Glass fiber treated with organic montmorillonite dispersion with KH550 coupling agent could be treated with epoxy resin and polymer. Propylene resin formed a good interfacial bonding. The interfacial shear strength of the composites with epoxy resin increases 38.87 and that with polypropylene increases 106.79.
【學(xué)位授予單位】：華東理工大學(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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