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Electrical conductivity lubricating grease composition

A technology of grease composition and conductivity, which is applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of conductivity degradation, etc., and achieve the effect of good conductivity and good friction characteristics

Inactive Publication Date: 2012-12-19
NOK KLUEBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of using conventional conductivity-imparting substances, the tendency of conductivity to deteriorate over time was observed

Method used

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  • Electrical conductivity lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0059] (Examples 1-4, Comparative Examples 1-4)

[0060] In PFPE (40°C dynamic viscosity 400mm 2 / s) by adding a conductivity-imparting agent and kneading twice with a three-roll mill. The oil pressure of the three-roll mill is 1 MPa, the inlet and outlet of the first pass (pass) are 20 μm, the inlet and outlet of the second pass are 100 μm, and the inlet and outlet of the third pass are 20 μm.

[0061] The above-mentioned PFPE and conductivity-imparting agent were prepared according to the compounding ratios in Table 1 to obtain respective grease compositions. As PFPE, structural formulas (I), (III), and (IV) are specifically used.

[0062] Structural formula (I) CF 3 CF 2 CF 2 O[CF(CF 3 ) CF 2 O] m CF 2 CF 3

[0063] Dynamic viscosity at 40°C: 400mm 2 / s

[0064] Structural formula (III) RfO (CF 2 CF 2 O) j (CF 2 O) k Rf

[0065] Dynamic viscosity at 40°C: 310mm 2 / s

[0066] Structural formula (IV) F (CF 2 CF 2 CF 2 O) n CF 2 CF 3

[0067] Dynami...

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Abstract

The invention relates to an electrical conductivity lubricating grease composition which shows excellent electrical conductivity and has excellent frictional characteristics, and is characterized in that serving as a base oil, the composition contains perfluoropolyether, and serving as an electrical conductivity imparting agent, the composition contains carbon nano tubes, wherein the diameter of the carbon nano tubes is 40 to 200 nm, and the carbon nano tubes takes up 0.1 to 20 percent by weight in the whole lubricating grease.

Description

technical field [0001] The present invention relates to a conductive grease composition having high electrical conductivity and wear-inhibiting effect of sliding members. Background technique [0002] The printing method using electrostatic transfer copiers such as digital PPC and color PPC first forms an electrostatic latent image on the photosensitive drum, attaches the toner, and transfers the visible image formed on the photosensitive drum by charging the transfer electrode. Get started on printed paper. Next, the printing paper detached from the photosensitive drum is sent to the fixing roller, and the toner is fixed to the paper surface by heating and pressure. In such a printing process, static electricity is generated on, for example, the rollers of the fixing unit as the printing paper passes. As a mechanism for releasing this static electricity to the outside, a mechanism for discharging the roll shaft end by grounding (earth) is generally provided. However, if ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M169/00C10N50/10C10N30/06C10N40/02
Inventor 谷义人志村明彦新田敏夫
Owner NOK KLUEBER CO LTD
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