Search results

Analysis on the Mechanical and Electrical Properties of PI/MWNTs Nano-hybrid Films Mingyan ZHANG1, a, Penghe DIAO 1,b , Xiaoying ZHU 1,c 1College of Material Science & Engineering, Harbin University of Science and Technology, CHINA a taotaozh@hrbust.edu.cn b fantasydph@163.com c zhuxiaoying19@163.com Keywords: polyimide; multi-walled carbon nanotubes; mechanical property; electrical property Abstract: In this paper, MWNTs (multi-walled carbon nanotubes) were modified by the mixture acid of H2SO4 and HNO3, the PI (polyimide)/MWNTs nano-hybrid films were prepared by means of ultrasonic vibration and in-situ polymerization.
Materials Pyromellitic dianhydride (PMDA, purity 99%) and 4,4-oxydianilline (ODA, purity 99%), were purchased from Mudanjiang Insulation Material Co.
Journal of Polymer Science Part A: Polymer Chemistry, Vol. 45(15), (2007), p. 3349～3358 [2] J.
Allaoui: Effect of the length and the aggregate size of MWNTs on the improvement efficiency of the mechanical and electrical properties of nanocomposites-experimental investigation, Composites Part A: Applied Science and Manufacturing, vol. 34, (2003), p. 689–694

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Preparation of Novel Bioactive Titanium Coatings on Titanium Substrate by Reactive Plasma Spraying Masahiko Inagaki1, Yoshiyuki Yokogawa 2 and Tetsuya Kameyama 3 1 2266-98 Anagahira Shimoshidami Moriyama-ku, Nagoya, 463-8560, JAPAN, National Institute of Advanced Industrial Science and Technology (AIST), m-inagaki@aist.go.jp 2 2266-98 Anagahira Shimoshidami Moriyama-ku, Nagoya, 463-8560, JAPAN, National Institute of Advanced Industrial Science and Technology (AIST), y-yokogawa@aist.go.jp 3 2266-98 Anagahira Shimoshidami Moriyama-ku, Nagoya, 463-8560, JAPAN, National Institute of Advanced Industrial Science and Technology (AIST), t-kameyama@aist.go.jp Keywords: Reactive plasma spraying, titanium, titania, titanium nitride, coatings, bioactivity Abstract.
Introduction Surface modification of metallic titanium by chemical treatments [1,2] and ion implantation [3] has been studied to induce bioactivity for implant materials.
Ti powder (average particle size = 68±15 mm, 99.9%) were used as raw materials.
These samples were evaluated by micro Fourier transform infrared reflection spectroscopy (micro FT-IR) (MICRO-20, JASCO co.) and thin film X-ray diffraction (TF-XRD) (MPX3, MAC Science, Japan).

Introduction Bisphenol A(2, 2–bis(4-hydroxyphenyl)propane, BPA) is widely used as a major component of manufacturing polycarbonate resin and also as an antioxidant material for stabilizing in many plastic products.
The semiconductor TiO2 has been proved to be an excellent photocatalytic material on which many organic substrates have been shown to be oxidatively(in some cases reductively) degraded and ultimately mineralized completely under UV irradiation[8-10].
In acidic solution, the concentration of H+ is large, relatively concentration of OH- is very low, the corresponding raw materials that can generate hydroxyl radicals will decrease.
Acknowledgements This work was financially supported by the National High-Tech Research & Development Program of China(2009AA05Z105), the National Natural Science Foundation of China(21073123), Natural Science Foundation of Shenyang city(F10-205-1-11), and Education Bureau of Liaoning Province of China(LT2010097; LS2010153).
Chinese Journal of Catalysis.

By inviting the technicians to deliver lectures and consulting geological report of the mine, preliminary design specification and drawing and other materials, the students get a comprehensive understanding of the general situation of mine, mining area geological features, the surface layout of mine and the major problems in the production 2) Actual research underground, observation, working, having discussion with coal miners and technicians, along with lectures and relevant materials help the students deeply understand actual conditions of the mine. 3) Data compilation and writing practice report.
Acknowledgements The work was financially supported by the Research project of North China institute of science and technology in 2013(Instrctional) (HKJYZD201301), The research on the practical teaching reform of mining engineering based on the connotative development.
Funded by the North China institute of science and technology's teaching and research projects(hkjyzd201203), the research on the practical teaching reform of mining engineering for excellent engineers.
China science and technology information. 2007.1
Journal of Changsha university. 2007.3.

Transparent If the gem material has very good color but not sufficiently transparent or clean to be faceted, it can still be shaped and polished to become a very attractive cabochon[4].
Journal of East China Geological Institute, Vol. 20(1997), p.384-388(in Chinese with english abstract) [3] Shuli Zou.
Jewelry Science and Technology, Vol. 25(1997), p.50-51(in Chinese with english abstract) [4] Jie Lin, Shuli Zhou, Dong sheng.
How to Master Polishing-the Key Technique in Gemstone Processing, Super Hard Material &Gem, Vol. 49(2003), p.60-62(in Chinese with english abstract) [5] Qingfeng Ruan, Liangjv Zhang, Zhou Shuli.
Study on Cutting of Special Materials of Gemstone, Jewelry Science and Technology, Vol. 53(2004), p.57-59(in Chinese with english abstract) [6] Information on http://www.keewords.com/en/languages/polish/ [7] Information on http://www.jtv.com/library/gemstone-glossary,default,pg.html

Cantilever resonators have been fabricated from two types of materials, single crystal and polycrystalline 3C-SiC films.
Among SiC unique material properties, the high value of the Young's Modulus and the relatively low mass density permit to achieve higher resonant frequencies compared to other materials.
Summary Cantilever resonators have been fabricated from two types of materials, single crystal and polycrystalline 3C-SiC films.
In particular, because of its relatively high Young's Modulus the grown single crystal layer should be an optimal material for RF-MEMS applications giving the possibility of achieving higher resonant frequencies than with other materials.
Cheung: Journal of Vacuum Science & Technology B Vol. 25 (2007), p. 2553 [8] K.

The material is melted by discharge, the material is thought to blown off by the vaporizing explosion of the working fluid.
A part of the material is melted and removed by discharge.
The work-piece material was AISI 1045, having a thickness of 5 mm.
However, the material removal rate increased by 20%.
[2] Hideki TSUGE, Engineering and Industrial Application and Utilization of Micro-bubbles, Bulletin of the Society of Sea Water Science, Japan, Vol. 60, No.3 (2006) 157-159 (in Japanese)

CFRP composite material, which is reinforced with carbon fiber, features superior heat and corrosion resistance, and these benefits enables the gradual applications on aerospace industries and sports-entertainment business.
However, CFRP composite materials have the weakness in impact and hygrothermal environment. [1-3].
(1) Here, M is moisture absorption (%), Wd is material weight before absorbing moisture (g) and Wm is material weight after absorbing moisture(g).
Sala: Composites Part B Vol. 31(2000), p. 357-373 [3] Yuichiro Aoki, Ken Yamada, Takashi Ishikwa: composites science and technology Vol. 68(2007), p. 1376-1383 [4] H.
S: Journal of Composite Material Vol. 2(1976), p.2–16 [5] Kim, Y.

It explains that limestone dust has a certain activity, not the inert material.
In order to study the effects of limestone dust on the properties of cement mortar, this paper replaces cement with the same amount of limestone dust to do relevant tests. 1 Raw materials and test methods 1.1 Raw materials.
It is not inert material
Limestone powder's influence on the composite cementitious material hydration properties [D].
Journal of the Chinese Ceramic Society, 2006, 34(10):1243一1245.

Cold roll is one of the difficult-to-machine materials due to its high hardness.
Al2O3+Ti (NC) metal ceramic materials had various failure modes.
This is mainly because at high speed wear tracks fall off with the cutting materials
Journal of Materials Processing Technology, 2007, 166(1):3 21-329
Encyclopedia of Materials: Science and Technology, 2008, (1): 4692-4697