Effect of coprecipitated barium ferrite on the cure characteristics and dynamic properties of natural rubber-ferrite composites around percolation

2009 ◽  
Vol 113 (5) ◽  
pp. 3294-3299 ◽  
Author(s):  
Mahmoud Hosseny Moussa Makled ◽  
Hirohiko Washiya ◽  
Hiroshi Tsuda ◽  
Toshiyuki Matsui
Keyword(s):  
Natural Rubber ◽  
Barium Ferrite ◽  
Dynamic Properties ◽  
Cure Characteristics ◽  
Ferrite Composites ◽  
Rubber Ferrite Composites

Dielectric and Mechanical Properties of Rubber Ferrite Composites Containing Barium Ferrite

2002 ◽  
Vol 18 (4) ◽  
pp. 269-282 ◽  
Author(s):  
M. A. Soloman ◽  
Philip Kurian ◽  
M. R. Anantharaman
Keyword(s):  
Mechanical Properties ◽  
Magnetic Property ◽  
Barium Ferrite ◽  
Value Added ◽  
Dielectric Strength ◽  
High Tech ◽  
Synthetic Rubber ◽  
Ferrite Composites ◽  
Dielectric And Mechanical Properties ◽  
Rubber Ferrite Composites

The incorporation of various types of ferrites in rubber matrixes leads to the development of rubber ferrite composites (RFC). These RFC have a large number of applications as flexible magnets, high-tech sensors, for telecommunication and radiowave absorbers. Both natural and synthetic rubber has the potential of being value added by the incorporation of ferrites. Applications like microwave absorbers warrant that these composites have an appropriate dielectric strength with the required magnetic property. This can be achieved by synthesizing composites based on natural rubber and ferrites. In this paper we report the synthesis of RFC containing barium ferrite according to a specific recipe and its evaluation of dielectric and mechanical properties.

Effects of Magnetic Powder Loading on Mechanical Properties and Magnetic Properties of Natural Rubber

2006 ◽  
Vol 45 ◽  
pp. 1423-1428
Author(s):  
Somsak Woramongconchai ◽  
Chatchawan Lohitvisat ◽  
Aree Wichainchai
Keyword(s):  
Mechanical Properties ◽  
Magnetic Properties ◽  
Coercive Force ◽  
Natural Rubber ◽  
Barium Ferrite ◽  
Maximum Energy ◽  
Magnetic Powder ◽  
Elongation At Break ◽  
Maximum Energy Product ◽  
Energy Product

The effect of magnetic powders and powders loading on magnetic properties and mechanical properties of magnetic rubbers were studied. The natural rubber with magnetic powders, Barium ferrite, Neodymium iron boron, were used as starting materials to prepare magnetic rubbers. Barium ferrite (BaO.6F2O3) powders had been sintered at 1285 oC for 30 hours to improve its crystal structure. The physical properties of magnetic rubbers, residual flux density (Br), coercive force (Hc), maximum energy product (BHmax), hardness and density, had a trend to increase as enhancing magnetic powders loading. However, some properties such as, intrinsic coercive force (Hci), tensile strength and elongation at break, had a trend to decrease when the magnetic powder loading was increased. Magnetic properties of the anisotropic type, sintered powders, were higher than isotropic type, non-sintered powders, except the Hci because anisotropic magnetic rubber indicated crystal orientation in the same direction.

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