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Experimental Materials Sisal fiber was supplied by Guangxi Sisal Company, glass fiber was supplied by Chongqing Glass fiber Company, phenol formaldehyde resin was purchased from Wuhan High Balance Composite Materials Co.
Analysis on reason, sisal fiber is a kind of plant fiber, it can improve the mixing performance of material and debase the density of frictional materials.
Conclusion The hybrid fiber used as braking friction materials have the advantages of favorable friction and wear properties，higher impact strength.
Acknowledgements The authors would like to acknowledge National Natural Science Foundation of China (GrantNo.:50763001), Guangxi Natural Science Foundation of China (Grant No.: 2010GXNSFA013030) the Guangxi Science and Guangxi Applied Basic Research special Foundation (No.: 0836016) for financial support.
Journal of Materials Science, 34: (1999), 2903 [3] P Gopal ,L R Dharani , F D Blum.

To prepare the renewable carrier materials for immobilization of nitrifying bacteria, polylactic acid (PLA) dichloromethane solution was added to chitosan aqueous solution, mixed by agitation at a speed of 150 rpm / min.
But the current microbial carriers are mostly made from the raw materials such as PVA and sodium alginate [3-5]; there exist some problems in their properties like mass transferring capacity, biocompatibility, and stability.
(2) The surface of PLA microspheres was modified by grafting chitosan molecules, forming a rough, porous and hydrophilicmorphology structure, which can be used as carrier materials for immobilizing nitrifying bacteria
Technology biology immobilized and control of water pollutants [M].Science press. 2002
Chemical Journal of Chinese Universities，2004, 749(24):4

The correlation between the electrical resistivity and aging parameter was established, which allows one to estimate the materials degradation of 2.25Cr-1Mo steel.
Experimental Test material is 2.25Cr-1Mo steel which is widely used as a reactor material.
Ryu : Journal of the Korean Society for Nondestructive Testing Vol. 21, No. 5 (2001), p. 532-541
Son : Journal of the Korean Society for Nondestructive Testing Vol. 20, No. 5 (2000), p.445-450
Nam : Journal of the Korean Society for Nondestructive Testing Vol. 20, No. 5(2000), p. 424-430

Therefore, the research of ITO nano-powder is one of the hot spot in materials science.There are many methods for the preparation of ITO powder, such as chemical precipitation, sol-gel method [3], hydrothermal method [4], metal spray combustion method [5] and spray pyrolysis method.
Estreicher :Journal of Functional Materials .
Estreicher : Journal of Functional Materials.
Estreicher:Journal of Jilin University(Science Edition).
Forum Vol. 351(1979), p. 79 [9] C.M, Z.L.Pei and X.D.Bai .Estreicher :Chinese Journal of Materials Research.

These materials are able to swell in both aqueous and organic media, and can absorb both polar and nonpolar solution.
Progress in Polymer Science.
Journal of Materials Science: Materials in Medicine.
Journal of the American Chemical Society.
Colloid and Polymer Science.

Wan: Journal of Applied Polymer Science.
Zhao: Journal of Applied Polymer Science.
Yao: Journal of Applied Polymer Science.
Ono: Journal of Wood Science.
Shiraishi: Journal of Applied Polymer Science.

Sefat, Potential of electrospun nanofibers for biomedical and dental applications, Materials 9 (2016) 73-94 [10] F.L Zhou, R.H Gong, I.
Qin, Medical Textile Materials, Woodhead Publishing, Cambridge, 2016 [13] P.H.
Ranganathan, Needleless Electrospinning Technology – An Entrepreneurial Perspective, Indian Journal of Science and Technology 9 (2016) 2-11 [23] D.
Syková, Nanofibers prepared by needleless electrospinning technology as scaffolds for wound healing, Journal of Materials Science: Materials in Medicine 23 (2012) 931–941 [26] D.
Chang, Electrospun nanofibrous materials for tissue engineering and drug delivery, Science and Technology of Advanced Materials 11 (2010) 2-12 [34] S.

Synthesis of aminotriacetic acid intercalated MgAl-layered double hydroxides and its selective IR absorption properties Tianlei Wang1,a, XiaoJuan Liu1,b, MeiTang Liu1,c, HongWen Ma1,d, Lin Lin2,e 1 School of Materials science and technology, China University of Geosciences, Beijing 100083, China 2 Qingdao TFL Chemicals Co.
LDHs also known as layered double hydroxyl compound metallic hydroxides, is a kind of anionic layered functional materials.
The authors also sincerely thank National Laboratory of Mineral Materials of China and Blue Sky Technology Co.
Materials Research Bulletin, 3 (2012) 532-536
Journal of Materials Chemistry, 9(1999) 805-811

So far, the research about this filed mainly focuses on combination technology of far infrared functional materials and its energy saving effect.
Natural minerals are the basic materials for the preparation of far infrared functional materials, some of which have excellent physiochemical properties and low cost.
Schartel: Fire and Materials Vol. 27(2003), p. 151–162 [2] H.
XU: Journal of Tongji University (Natural Science), Vol. 35(2007), p. 1425 -1429
Liao, et al.: Journal of Tongji University (Natural Science), Vol. 30(2002), p. 183~188 [11] J.

Experimental material and method The substrate materials is alloy structure steel 4140, coating material is even mixture which consists of WC and two kinds of binding phase powder (A , B) ground by ball milling separately, each mass rate is 3 to 1, the graininess of the powder is 5~15μm, A is Fe60 (C,0.5-1wt%.
Agren: Materials Science and Engineering A 452–453 (2007), p. 37-45 [2] Z.X Wang, A.X Yang, T Zang, D.Y He: Materials Engineering (2008), p. 56-59 [3] T Li, Q.F Li, J.Y.H.
Fuh: Materials Science and Engineering A 430 (2006), p. 113–119 [4] Bilge Yaman, Hasan Mandal: Materials Letters.
New carbide base materials for sparying.
Thermal spray 2003: Advancing the Science＆Applying the Technology.