Anisotropic rubber magnet and its manufacture, motor and magnetic roller

Anisotropic rubber magnet and its manufacture, motor and magnetic roller

CN
  • CN 100,580,016 C
  • Filed: 09/10/2004
  • Issued: 01/13/2010
  • Est. Priority Date: 09/12/2003
  • Status: Active Grant
First Claim
Patent Images

1. anisotropic rubber magnet, it contains paracril, softening agent, lubricant and ferrite powder at least, it is characterized in that:

  • with respect to 100 weight part paracrils, the ratio of softening agent is 10~

    30 weight parts, the ratio of lubricant is 8~

    30 weight parts, the ratio of ferrite powder with count 66%~

    80% with undefined ferrite volume fraction, orientation degree be 84% or more than, the mooney viscosity ML of described paracril under 100 ℃

    1+4Be 30~

    60, the content of the vinyl cyanide in the described paracril is 18~

    50 weight %, and the density as pressed of described ferrite powder is 3.3Mg/m 3Or more than, Ferrite volume fraction=[(by the volume of the ferrite powder of density calculation)/(by the total of the volume of each composition of each density calculation)] * 100Wherein, the density of described ferrite powder is set at 5.1Mg/m 3Described each density is the density of paracril, softening agent and lubricant, and they are set at 1.0Mg/m 3, Described softening agent is phthalic ester or trimellitate, and described lubricant is at least a in paraffin class, fatty acid, metallic soap class, fatty acyl amide, higher alcohols and the fatty acid ester.

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