物理化学学报
物理化學學報
물이화학학보
ACTA PHYSICO-CHIMICA SINICA
2013年
4期
821-828
,共8页
自组装分子膜%有机镀膜%复合膜%表面自由能%疏水%微摩擦学性能
自組裝分子膜%有機鍍膜%複閤膜%錶麵自由能%疏水%微摩抆學性能
자조장분자막%유궤도막%복합막%표면자유능%소수%미마찰학성능
Self assembled monolayer%Polymer plating%Composite film%Surface free energy%Hydrophobicity%Micro-tribological property
采用自组装分子膜技术在烧结型NdFeB永磁体表面制备了三嗪硫醇三乙基硅烷(TES)自组装分子膜(TES-SAMs),在TES-SAMs的基础上利用自主开发的有机镀膜技术制备了具有含氟官能团的三嗪硫醇(ATP)有机纳米复合薄膜(TES-ATP).通过X射线光电子能谱仪(XPS)、傅里叶变换红外(FTIR)光谱仪、椭圆偏振光谱仪、原子力显微镜(AFM)和接触角测量仪对薄膜的表面状况进行评价,使用UMT-2型摩擦磨损试验机研究TES-SAMs和TES-ATP的微摩擦学性能.研究结果表明:TES-SAMs和TES-ATP的膜厚分别是5.08和29.78 nm;表面自由能从基体的73.13 mJ·m-2下降到TES-SAMs的63.69 mJ·m-2和TES-ATP复合膜的10.19 mJ· m-2,且TES-ATP复合膜对蒸馏水的接触角为123.5°,成功实现了NdFeB表面由亲水到疏水的转换. TES-SAMs和TES-ATP均能有效降低摩擦系数, TES-SAMs的摩擦系数为0.22, TES-ATP的摩擦系数为0.12,而基体的摩擦系数为0.71;同时, TES-ATP还表现出良好的抗磨性能. TES-ATP复合膜为微机电系统中的摩擦磨损问题的解决提供了一种新思路.
採用自組裝分子膜技術在燒結型NdFeB永磁體錶麵製備瞭三嗪硫醇三乙基硅烷(TES)自組裝分子膜(TES-SAMs),在TES-SAMs的基礎上利用自主開髮的有機鍍膜技術製備瞭具有含氟官能糰的三嗪硫醇(ATP)有機納米複閤薄膜(TES-ATP).通過X射線光電子能譜儀(XPS)、傅裏葉變換紅外(FTIR)光譜儀、橢圓偏振光譜儀、原子力顯微鏡(AFM)和接觸角測量儀對薄膜的錶麵狀況進行評價,使用UMT-2型摩抆磨損試驗機研究TES-SAMs和TES-ATP的微摩抆學性能.研究結果錶明:TES-SAMs和TES-ATP的膜厚分彆是5.08和29.78 nm;錶麵自由能從基體的73.13 mJ·m-2下降到TES-SAMs的63.69 mJ·m-2和TES-ATP複閤膜的10.19 mJ· m-2,且TES-ATP複閤膜對蒸餾水的接觸角為123.5°,成功實現瞭NdFeB錶麵由親水到疏水的轉換. TES-SAMs和TES-ATP均能有效降低摩抆繫數, TES-SAMs的摩抆繫數為0.22, TES-ATP的摩抆繫數為0.12,而基體的摩抆繫數為0.71;同時, TES-ATP還錶現齣良好的抗磨性能. TES-ATP複閤膜為微機電繫統中的摩抆磨損問題的解決提供瞭一種新思路.
채용자조장분자막기술재소결형NdFeB영자체표면제비료삼진류순삼을기규완(TES)자조장분자막(TES-SAMs),재TES-SAMs적기출상이용자주개발적유궤도막기술제비료구유함불관능단적삼진류순(ATP)유궤납미복합박막(TES-ATP).통과X사선광전자능보의(XPS)、부리협변환홍외(FTIR)광보의、타원편진광보의、원자력현미경(AFM)화접촉각측량의대박막적표면상황진행평개,사용UMT-2형마찰마손시험궤연구TES-SAMs화TES-ATP적미마찰학성능.연구결과표명:TES-SAMs화TES-ATP적막후분별시5.08화29.78 nm;표면자유능종기체적73.13 mJ·m-2하강도TES-SAMs적63.69 mJ·m-2화TES-ATP복합막적10.19 mJ· m-2,차TES-ATP복합막대증류수적접촉각위123.5°,성공실현료NdFeB표면유친수도소수적전환. TES-SAMs화TES-ATP균능유효강저마찰계수, TES-SAMs적마찰계수위0.22, TES-ATP적마찰계수위0.12,이기체적마찰계수위0.71;동시, TES-ATP환표현출량호적항마성능. TES-ATP복합막위미궤전계통중적마찰마손문제적해결제공료일충신사로.
@@@@A nanofilm (TES-SAMs) was prepared by self-assembly of 6-(3-triethoxysilylpropylamino)-1,3, 5-triazine-2,4-dithiol monosodium (TES) on a sintered NdFeB surface. A nano composite film (TES-ATP) was then prepared on the TES-SAMs surface by a self-developed polymer plating technique using 6-(N-allyl-1,1,2,2-tetrahydroperfluorodecylamino)-1,3,5-triazine-2,4-dithiol monosodium (ATP). The surface of the TES-SAMs and TES-ATP were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, spectroscopic ellipsometry, atomic force microscopy (AFM), and contact angle measurements. A UMT-2 tribometer was used to investigate their micro-tribological properties. The experimental results showed that the thicknesses of TES-SAMs and TES-ATP were 5.08 and 29.78 nm, respectively. The surface free energy of TES-ATP and TES-SAMs decreased from 73.13 mJ·m-2 for the substrate to 10.19 and 63.39 mJ·m-2, respectively. The contact angle of distilled water on TES-ATP was 123.5° , indicating transformation from a hydrophilic surface to a hydrophobic one. The friction coefficient was effectively reduced from 0.71 for the substrate to 0.22 for TES-SAMs and 0.12 for TES-ATP. In addition, the TES-ATP composite film possessed excellent anti-wear ability. Thus, the present TES-ATP composite film provides a novel approach to solving tribological issues in micro-electro-mechaanical system (MEMS).
