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Sliding material and sliding bearing

A sliding material and lubricating oil technology, used in shafts and bearings, bearing components, base materials, etc., can solve the problems of unachievable sliding performance of porous resin layer, exposed metal materials, and poor durability, and achieve excellent low dust generation. Excellent performance, durability, and low coefficient of friction

Inactive Publication Date: 2011-07-06
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in recent years, sliding bearings used in office machinery, etc. have become more stringent in terms of rotation accuracy and durability year by year. Even for the above-mentioned multilayer sliding bearings, once the solid lubricant fails, the coating film will peel off, and the substrate The metal material is exposed, which causes problems such as poor durability
In addition, even when a porous resin layer is used for the sliding surface, there is a possibility that the connected porosity of the porous resin layer cannot even achieve the sliding performance satisfying the above-mentioned required performance.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0123] According to the volume ratio of 50:50, ultrahigh molecular weight polyethylene powder (XM220 manufactured by Mitsui Chemicals Co., Ltd.) and sodium benzoate powder (reagent manufactured by Wako Pure Chemical Industries, Ltd.) were mixed in a mixer for 5 minutes to obtain a mixed powder. This mixed powder was heat-compressed (200° C. x 30 minutes) and then cut to form a predetermined molded body (test piece of φ3 mm x 13 mm). The molded body was washed with hot water at 80° C. in an ultrasonic cleaner for 10 hours to elute the sodium benzoate powder. Then, it was dried at 100° C. for 8 hours to obtain a porous body having a continuous porosity of 48%. At 60°C, make silicone oil (Shin-Etsu Chemical Co., Ltd. KF96H-6000 (dynamic viscosity 6000mm 2 / s (25°C)) vacuum impregnated in the porous body to obtain a test piece. The oil content was 45% based on the total volume of the porous body.

Embodiment 2

[0125] Polyetheretherketone resin powder (150PF manufactured by VICTREX) and sodium benzoate powder (reagent manufactured by Wako Pure Chemical Industries, Ltd.) were mixed in a mixer at a volume ratio of 50:50 to obtain a mixed powder. This mixed powder was heat-compressed (360° C. x 30 minutes) and then cut to form a predetermined molded body (test piece of φ3 mm x 13 mm). The molded body was washed with hot water at 80° C. in an ultrasonic cleaner for 10 hours to elute the sodium benzoate powder. Then, it was dried at 100° C. for 8 hours to obtain a porous body having a continuous porosity of 48%. At 60°C, make silicone oil (Shin-Etsu Chemical Co., Ltd. KF96H-6000 (dynamic viscosity 6000mm 2 / s (25°C)) vacuum impregnated in the porous body to obtain a test piece. The oil content was 45% based on the total volume of the porous body.

Embodiment 3

[0127] According to the volume ratio of 40:10:50, polyetheretherketone resin powder (150PF manufactured by VICTREX), carbon fiber (MLD100 manufactured by Toray Co., Ltd.) and sodium benzoate powder (reagent manufactured by Wako Pure Chemical Industries, Ltd.) were mixed in a mixer. Mix for 5 minutes to obtain a mixed powder. This mixed powder was heat-compressed (360° C. x 30 minutes) and then cut to form a predetermined molded body (test piece of φ3 mm x 13 mm). The molded body was washed with hot water at 80° C. in an ultrasonic cleaner for 10 hours to elute the sodium benzoate powder. Then, it was dried at 100° C. for 8 hours to obtain a porous body having a continuous porosity of 48%. At 60°C, make silicone oil (Shin-Etsu Chemical Co., Ltd. KF96H-6000 (dynamic viscosity 6000mm 2 / s (25°C)) vacuum impregnated in the porous body to obtain a test piece. The oil content was 45% based on the total volume of the porous body.

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Abstract

A sliding material, comprising a resin porous body soaked with a lubricating oil and having communication holes at a ratio of 30% or more. The resin porous body having the communication holes is obtained by molding a resin mixed with a pore forming material into a molded body and extracting the pore forming material from the molded body by using a refrigerant in which the pore melting material ismolten and the resin is not molten. A sliding bearing comprises a sliding material formed of the sliding material having a sliding surface sliding on a mating material to support the sliding material, and a lubrication oil supply layer formed of a metal sintered body for supplying the lubricating oil.

Description

technical field [0001] The present invention relates to a sliding material for forming a sliding part, a sliding bearing using the sliding material, a sliding material for forming a sliding part used in a low-pressure atmosphere such as a clean atmosphere or a vacuum, and a soft matching part or requirement Sliding bearings with high rotational accuracy. Background technique [0002] The performance required for sliding parts molded from sliding materials such as lubricating resin compositions has become more stringent year by year, and the demand for excellent low friction and low wear in the initial state and ensuring the initial sliding performance for a long time is also increasing. very strong. In the case of using a resin material with lubricating oil as the above-mentioned sliding material, it can be achieved by adjusting the affinity between the resin used as the base material and the lubricating oil, adding fillers that form the lubricating oil conduction path, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M177/00C10M105/04C10M107/38C10M171/00F16C33/20C08J9/26C08L101/00C10N20/00C10N30/00C10N30/06C10N40/02C10N50/08C10N70/00C10M101/02C10M169/04
Inventor 筒井英之平田正和江上正树
Owner NTN CORP