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Self-lubricating composite gasket for bearing and preparing method for gasket

A composite material, self-lubricating technology, applied in the field of bearing materials, can solve the problems of easy relative sliding, easy wear, low strength, etc.

Inactive Publication Date: 2012-07-04
JIANGSU CCVI BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has a layered structure, the bonding force of the same layer is strong, but the bonding force between layers is very weak, and it is easy to slide relative to each other, with low strength and easy wear and tear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Example 1: Weaving PTFE fibers and aramid fibers in a twill way, the fiber ratio is PTFE fibers / (PTFE fibers + aramid fibers) = 0.4, and the fabric thickness is 0.40 mm. Named CD01

[0029] 60% modified phenolic resin glue, 5% molybdenum disulfide, 10% nano alumina, 15% polytetrafluoroethylene powder. The dipping solution with a solid content of 20% was adjusted with absolute ethanol, and 20% of the fabric weight of the dipping solution was uniformly coated on the fiber braid, and then baked in an oven at 80 °C for 20 minutes, and 100Mpa was applied on the rolling mill. Roll forming under the conditions.

[0030] The above-mentioned materials were pasted on the surface of 45 steel with a phenolic binder and the above-mentioned self-lubricating material was cured at 200° C. for 2 hours under a pressure of 0.2 MPa.

example 2

[0031] Example 2: Weaving PTFE fibers and high-strength polyester fibers in a satin weave, the fiber ratio is PTFE fibers / (PTFE fibers + high-strength polyester fibers) = 0.65, and the fabric thickness is 0.51 mm. Positioning location CD02

[0032] 65% modified phenolic resin glue, 3% molybdenum disulfide, 12% nano alumina, 20% polytetrafluoroethylene powder. The dipping solution with a solid content of 25% was adjusted with absolute ethanol, and the 25% dipping solution by weight of the fabric was evenly coated on the fiber braid, and then baked in an oven at 80 °C for 20 minutes, and then applied on a rolling mill with 100Mpa Roll forming under the conditions.

[0033] The above-mentioned materials were pasted on the surface of 45 steel with a phenolic binder and the above-mentioned self-lubricating material was cured at 200° C. for 2 hours under a pressure of 0.2 MPa.

[0034] Example 2: Weaving PTFE fibers and Nomex fibers in a satin pattern, the fiber ratio is PTFE fibe...

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Abstract

The invention discloses a self-lubricating composite material gasket for a bearing and a preparing method for the gasket. A fiber mixed fabric is formed by weaving PTFE (polytetrafluoroethylene) fiber with at least one type of other fiber; an impregnated material is coated on the surface of the fiber mixed fabric; the final thickness of the fiber mixed fabric is 0.30 to 0.55 mm; the thickness of the gasket is 0.35 to 0.60 mm; the weight ratio of the PTFE fiber to the gasket is 0.3 to 0.7; and the other types of fibers can be any one or a few of aramid fiber, carbon fiber, high-strength polyester fiber and cotton fiber. The self-lubricating gasket has the characteristics of high strength and low friction coefficient, and is suitable to be used in heavy-duty occasions under the temperatures ranging from -50 to 180 DEG C.

Description

technical field [0001] The invention relates to a self-lubricating liner material, in particular to a self-lubricating composite material liner for bearings, which belongs to the technical field of bearing materials. Background technique [0002] Polytetrafluoroethylene (PTFE) has a very low coefficient of friction and good lubricity. Therefore, it has received widespread attention as a lubricating material. It has a layered structure, the bonding force of the same layer is strong, but the bonding force between layers is very weak, and it is easy to slide relative to each other, with low strength and easy wear. In order to improve this shortcoming, a variety of ingredients are added to improve its wear resistance; there is also a layer of spherical porous copper powder layer sintered on the surface of low carbon steel, and then rolled with a layer of PTFE or a friction-reducing material mixed with PTFE to make it Three-layer self-lubricating compound. Contents of the i...

Claims

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Application Information

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IPC IPC(8): D06M15/41D06M15/256D06M11/53D06M11/45D03D15/00F16C33/04D03D15/217D03D15/275D03D15/283D03D15/47D03D15/573
Inventor 朱伟陈亚林
Owner JIANGSU CCVI BEARING
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