全部

• 2018-12-11 16:55發(fā)布了問答

  納米材料的制作是哪個(gè)國家Z先發(fā)展起來的？

  　

  273人看過

• 2018-11-24 15:32發(fā)布了問答

  煅燒過程中的納米粒子固體粉末會(huì)發(fā)生團(tuán)聚現(xiàn)象怎么解決？

  要專業(yè)的解決方法

  384人看過

• 2018-11-12 10:11發(fā)布了問答

  求大家?guī)驼艺矣嘘P(guān)Zn-Pb-O系列陶瓷的信息

  找到請直接貼在下面，謝謝～～Z好是關(guān)于水熱合成的，其他方面比如現(xiàn)狀等等也需要

  204人看過

• 2016-11-04 07:27發(fā)布了問答

  納米釉 銻釉 鋯釉 鈦釉 的區(qū)別？

  　

  479人看過

• 2015-06-09 06:25發(fā)布了問答

  納米材料商標(biāo)注冊第幾類

  　

  364人看過

• 2014-01-12 03:23發(fā)布了問答

  名詞解釋 什么叫納米材料

  　

  369人看過

• 2012-07-23 05:53發(fā)布了問答

  什么是安然納米微元生化紡織品

  認(rèn)真的給大家解釋一下就好!因?yàn)楹枚嗳硕疾幻靼?

  571人看過

• 2011-05-09 17:15發(fā)布了問答

  專業(yè)英語翻譯，急用

  This paper presents a procedure for preparing a nanofluid which is solid–liquid composite material consisting of solid nanoparticles with sizes typically of 1–100 nm suspended in liquid. By means of the procedure， Cu–H2O nanofluids with... This paper presents a procedure for preparing a nanofluid which is solid–liquid composite material consisting of solid nanoparticles with sizes typically of 1–100 nm suspended in liquid. By means of the procedure， Cu–H2O nanofluids with and without dispersant were prepared， whose sediment photographs and particle size distribution were given to illustrate the stability and evenness of suspension with dispersant. Aiming at the dispersion of nano-Cu is regarded as the guide of heat transfer enhancement， the dispersion behavior of Cu nanoparticles in water were studied under different pH values， different dispersant types and concentration by the method of zeta potential， absorbency and sedimentation photographs. The results show that zeta potential has good corresponding relation with absorbency， and the higher absolute value of zeta potential and the absorbency are， the better dispersion and stability in system is. The absolute value of zeta potential and the absorbency are higher at pH 9.5. Hexadecyl trimethyl ammonium bromide (CATB) and sodium dodecylbenzenesulfonate (SDBS) can significantly increase the absolute value of zeta potential of particle surfaces by electrostatic repulsions， and polyoxyethylene (10) nonyl phenyl ether (TX-10) can form a thick hydration layer on the particle surfaces by steric interference， which leads to the enhancement of the stability for Cu suspensions. In the 0.1% copper nano-suspensions， the optimizing concentrations for TX-10， CATB， and SDBS are 0.43， 0.05， and 0.07%， respectively， which have the best dispersion results. . 2007 Elsevier Inc. All rights reserved. Keywords: Copper nano-suspensions; Dispersion and stability; Zeta potential; Absorbency 展開

  577人看過

• 2010-12-08 15:45發(fā)布了問答

  什么屬于細(xì)胞狀食品

  　

  430人看過

• 2008-05-16 16:42發(fā)布了問答

  找一些做實(shí)驗(yàn)的網(wǎng)站

  如物理、化學(xué)、生物。要找有實(shí)驗(yàn)步驟的，Z好是有演示的那種！各位拜托了！

  334人看過

• 2007-05-28 11:17發(fā)布了問答

  關(guān)于納米材料的問題

  幫我想一些越刁鉆得越好，Z好是別人想不到的，不能夠撞車的關(guān)于納米材料的問題，但是不要太過分，因?yàn)橐獑柦淌诘?

  783人看過

• 2006-07-27 19:09發(fā)布了問答

  納米的好處在那里

  　

  350人看過