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Describing Method for Information Protecting Composite Materials Liu Heng, Zeng Zhaoyang, Wu Chao Department of Camouflage and Simulation Engineerings PLA University of Science and Technology, Nanjing, Jiangsu Province, China zengzy1212@hotmail.com Keywords: microwave absorption, composite material, information protection.
Introduction Microwave absorption materials have been widely used in information protection technology, however, new materials that have higher absorption ability and lighter mass are still in urgent need for many cases, especially in defense information protecting.
Compositing technology is widely used in fabricating new microwave absorption materials[1,2], because this technology can gather advantages of different materials.
However, the relation between the properties of the composite material and the properties of the involved elementary materials is a bit blurry.
HP8722ES vector analyzer was used to measure the electric-magnetic parameters of the elementary materials.

Research on Microstructure Structure Formation Mechanism of Cement-Emulsifying Asphalt and waterborne Epoxy cementing materials Fan Shen1, a*, Mingyu Zhao 2, b, Ji Lu2, c, Qingjun Ding2, d 1School of Material Science and Engineering, Wuhan Institute of Technology, Hubei, Wuhan, 430073, China 2State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Hubei, Wuhan, 430070, China awwwsf5227@163.com, bzmyzhaomingyu@126.com, clujijay@163.com, ddingqj@whut.edu.cn Keywords: CAE; Structure Formation Mechanism; SEM Abstract.
Raw materials and design of proportion Raw materials.This experiment adopts the cationic slow crack-modified emulsion asphalt, huaxin P.O 4.5 ordinary Portland cement, homemade nonionic curing agent self emulsifying waterborne epoxy resin.
Huang: Journal of Building Materials, Vol.15 (2012), p91-95
Hu: Journal of Southeast University (Natural Science Edition), Vol.5 (2002), p.480-487
Ding: Journal of Central South University: Science and Technology, Vol.43 (2012), p.105-110

Thus, these composite materials can be processed by machining, extrusion and rolling.
MgB2 dispersed in Al matrix composite materials was made by 3DPC method.
No remarkable defects are observed in these composite materials.
%In is the highest among MgB2/Al-In composite materials.
Zhao, Journal of applied physics, volume91.number10, 15 (2002) 250

Introduction Nanometer material science is a frontier discipline, originated in the eighteen sixties research of colloidal particles.
Nanometer material science is to unite the interdisciplinary physics, colloid chemistry, coordination chemistry, chemical reaction kinetics, surface, interface and other disciplines, is an important part of modern material science, called in twenty-first Century for the material.
Journal of Jilin Architecture and Civil Engineering Institute, 2003:27 32 [3] Gleiter H.Nanostructured Materials [J].Japan, Prog Mater Sci, 1989, (33):223
Nanchang College Journal, 2002 ( 4 ) :74-76
New building material nanoparticle materials used in cement and other materials, 2003 (2):22 23

The surveys found that the majority of mines adopt cement as cementitious materials, all backfilling materials or hierarchical backfilling materials as aggregate.
The content of MgO in new materials was large, so the early hydration degree of new materials was high [15].
[11] M.C.G.JUENGER, P.J.M.MONTEIRO, E.M.GARTNER: Journal of Materials Science Vol. 41 (2006), p. 7074
[14] Xiong Zhang, Hui Lu, Yongjuan Zhang, Ming Zhao: Architecture &Technology Journal of Xian University (Natural Science Edition) Vol. 3 (2011) p. 379, In Chinese
[18] Fusheng Tao, Lipeng Tao, Yanting Song: Journal of Building Materials Vol. 4 (2001) p.277, In Chinese.

The original and immersed materials were cut into the smaller samples whose size were 4.5 mm×4.5 mm, as shown in Fig. 1 and Fig. 2.
Secondly, referring to morphology characteristics in previous SEM images and the equalized histograms, different materials and image background segmentation thresholds were gained.
Liu, Experimental research on waterproof performance damage of waterproof membrane under the mechanical circumstance in tunnel, Journal of Building Materials. 13 (2010) 487-491 [5] Q.X.
Yang, CT image artifacts and its solution, Journal of Mathematical Medicine. 22 (2009) 206-210 [7] Q.X.
Zheng, Experimental study of CT test on the failure of acrylate spray-applied waterproof layer in the groundwater environment, Science China·Technological Sciences. 53 (2010) 512-518

These compositions called as cellulosic materials.
Materials and Methods A.
The cellulosic materials decomposed in different temperature.
Cellulosic materials occurs between 200oC to 400oC [14,15].
New Application of Kenaf (Hibiscus Cannabinus L.), Journal of Membrane Science, 315: 141-146. (2008) [4] Rasha M.

Knowledge-intensive is a significant feature of the modern service-oriented industrial structure, and knowledge service is a main part of knowledge science.
On the System Theory and Modeling of Tribo-Systems.Chinese Journal of Tribology, 2010,vol. 30, pp1-8
Journal of Xi’an Jiaotong University, 2010,vol.44, pp.72-76+93
Current Advances in Materials and Processes,2003,16,1219
Journal of Materials Processing Technology, 2002, 129 (1-3):pp. 463-466

However, since the material performance requirements of hot-stamping dies have not been standardized, and special die materials have not been developed, the choice of materials is based on improving the safety coefficient, which leads to material waste and increased costs.
In this article, the performance requirements of hot-stamping dies are analyzed to obtain the main force indices and a material selection formula, providing a scientific basis for the selection of hot-stamping die materials.
Tekkaya．A review on hot stamping[J]．Journal of Materials Processing Technology, 2010, 210(15)：2103-2118
International Journal of Precision Engineering and Manufacturing. 2012, 13(7): 1101-1106
Mechanical engineering materials，2001，25(12)：36-40.

China 2School of Materials Science and Engineering, Wuhan University of Technology, No. 122, Luoshi Road, Wuhan, 430070, P.
Daniel, Effects of material and geometric nonlinearities on the tensile and compressive behavior of composite materials with fiber waviness, Composites Science and Technology 61 (2001) 125-134
Chou, Flexible composites, Journal of Materials Science 24 (1989) 761-783
Chou, Effect of fiber waviness on the nonlinear elastic behavior of flexible composites, Journal of Composite Materials 22 (1988) 1004-1025
Daniel, Fabrication methods for unidirectional and crossply composites with fiber waviness, Journal of advanced materials 26 (1995) 19-26