透過您的圖書館登入
IP:44.193.29.184
  • 學位論文

奈米粉體調質潤滑油磨潤特性研究

The Tribological Behavior of Nanoparticles in Liquid Paraffin

指導教授 : 康淵
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


中文摘要 奈米材料獲得廣大的重視,主要是由於其特殊之物理化學性能及在許多應用方面擁有廣泛潛力,是未來資訊技術和生物技術等多種學科深入發展的重要物質基礎。本文以溶膠-凝膠法合成奈米二氧化矽,並將不同的奈米粉體利用粉體表面改質技術進行改性,以改善奈米粉體在基礎油中的分散性及穩定性,另一方面針對基礎油添加奈米粉體對潤滑油耐磨耗性能影響,作一完整及深入的探討。 利用雷射粒徑分析儀、掃描式電子顯微鏡(SEM)分析奈米粉體的粒徑,能量散佈光譜儀(EDS)、X光粉體繞射儀(XRD)分析粉體其結晶相及結構型態的觀察,紅外線光譜儀分析奈米粉體表面之化合物與官能基及分子結構,分光光度儀測定奈米粉體在基礎油中分散的穩定性。磨耗試驗是利用TE53型多功能磨耗試驗機,以球對環(ball-on-ring)的接觸方式,探討奈米粉體作為潤滑油添加劑的磨潤行為。並利用場發射式電子顯微鏡(FE-SEM)、能量分析光譜儀、原子力顯微鏡(AFM)等儀器分析表面磨耗型態、化合膜組成及化合膜在磨耗表面的分佈情形。 實驗結果顯示:本研究合成出奈米級二氧化矽,粉體平均粒徑為58 nm,使用油酸修飾奈米粉體在基礎油中有良好的分散性及穩定性,油酸修飾小尺寸奈米粉體做為潤滑油添加劑,能夠明顯提高基礎油的抗磨及減摩能力。SEM、EDX、AFM分析結果表明,在摩擦過程中,奈米粉體存在於兩接觸表面間,形成微滾珠效應,以滾動摩擦方式取代原先之滑動摩擦方式,故其磨疤表面較為光滑平整,使得油酸修飾奈米粉體作為潤滑油添加劑表現出良好的磨潤性質。

關鍵字

磨潤學 磨耗 添加劑

並列摘要


Abstract Nano-size materials have attracted much attention in many fields of science and technology because of their special chemical and physical properties, including their high specific surface area and quantum effect, which well be very important to the advanced information and biological technology in the future. This work studies the preparation of SiO2 nanoparticles from tetraethylortho-silicate (TEOS) by the sol-gel process. The dispersion and the stability of liquid paraffin to which nanoparticles had been added, prepared by surface modification using oleic acid were studied. The tribological behaviors of liquid paraffin added by nanoparticles have been studied. The mean size of the nanoparticles and their distributions were analyzed using a laser particle size analyzer and scanning electron microscopy (SEM). The phase compositions of the nanoparticles were systematically analyzed using energy dispersive spectrometry (EDS) and X-ray diffraction (XRD).The structure of the modified nanoparticles that had been prepared using oleic acid was observed by infrared spectroscopy (IR). The dispersion stability of nanoparticles in liquid paraffin was determined by spectrophotometry. The tribological properties of nanoparticles as an additive in liquid paraffin were measured using a ball-on-ring wear tester to determine the optimal additive concentration. The distribution of the compound of the chemical reaction film on the wear surface was studied using SEM, EDS and atomic force microscopy. The results show that the SiO2 nanoparticles had a narrow particle size distribution when the sol-gel method was used. The particles had a mean size of about 58 nm. The nanoparticles that had been modified using oleic acid have excellent dispersion and stability characteristics in liquid paraffin. The results show that small nanoparticles as additives in liquid paraffin improve its antiwear and antifriction properties. SEM, EDS and AFM analyses show that thin films can be formed on rubbing surfaces using such nanoparticles, and smaller spherical nanoparticles are more likely to roll between the surfaces and thereby converted the sliding friction to rolling friction, reducing both the wear and the friction.

並列關鍵字

wear additive Tribology

參考文獻


[20]王惠君,“以回應曲面法探討溶膠-凝膠法製備奈米二氧化矽之參數影響”,碩士論文,中原大學化學工程研究所,桃園,1994。
[21]崔偉哲,“奈米粉體潤滑油之磨潤特性研究” ,碩士論文,國立台北科技大學,台北,1994。
[2]C. Donnet and A. Erdemir, “Historical Developments and New Trends in Tribological and Soild Lubricant Coatings,” Surface&Coatings Technology Vol. 180, No. 1, pp. 76-84, 2004.
[3]W. J. Bartz, “Some Investigations on the Influence of Particle Size on the Lubricating Effectiveness of Molybdenum Disulfide,” Tribology Transaction, Vol. 15, pp. 207-215, 1972.
[6]J. Zhou, J. Yang, Z. Zhang, W. Liu, and Q. Xue, “Study on the Structure and Tribology Properties of Surface-Modified Cu Nanoparticles,” Materials Research Bulletin, Vol. 34, Issue 9, pp. 1361-1367, 1999.

被引用紀錄


陳志祥(2011)。奈米炭應用在柴油引擎潤滑之研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-2707201121475400
巫健裘(2011)。添加奈米炭機油應用於實車測試之研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1807201119451500

延伸閱讀