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Self-lubricating double-layer composite material and preparation method thereof

A composite material and self-lubricating layer technology, which can be applied to other household appliances, etc., can solve the problems of inability to meet the requirements of high-precision fit, complex manufacturing process, and binder toxicity, and increase manufacturing costs and energy consumption. easy effect

Pending Publication Date: 2019-01-11
合肥波林新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-layer self-lubricating composite material compounded with adhesive is limited by the adhesive and bonding compound process conditions, and it cannot meet the use requirements under some high-temperature operating conditions. It will cause peeling failure, and the adhesive has certain toxicity, which is easy to cause environmental pollution
Although the three-layer composite material with a sintered copper powder layer to improve the bonding strength of the matrix layer and the surface layer can be used under working conditions, this type of thin-layer composite material, such as the application number 200810235590.0 "oil-lubricated or grease-lubricated self- Lubricated Sliding Bearing" patent document, the disclosed self-lubricating layer thickness is 0.02mm, because the self-lubricating layer is too thin, the surface self-lubricating layer cannot be cut and processed, and cannot meet the requirements of high-precision fit in some industrial occasions. In addition, the surface self-lubricating layer The change of friction coefficient after wear cannot meet the requirements of some industrial working conditions that require long-term stable friction; and this type of thick-layer composite material is very easy to peel off during machining and under unstable variable load conditions; in addition The production process of such materials is complicated, the cost is high, and the energy consumption increases

Method used

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  • Self-lubricating double-layer composite material and preparation method thereof

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Effect test

Embodiment 1

[0047] A self-lubricating double-layer gear pump side plate, using the self-lubricating double-layer composite material of the present invention, its structure also includes that the side plate has an "8" shape, and the thickness of the self-lubricating layer 2 is 0.15mm.

[0048] The metal base layer 1 is made of carbon steel plate, and the surface of the metal base plate is roughened by brushing and sandblasting.

[0049] The blind holes on the surface of the metal base layer 1 are blind holes 3 whose bottom area is larger than the area of ​​the opening. The blind holes are evenly distributed on the metal base layer 1. The diameter of the blind holes is 1mm, the depth of the blind holes is 2mm, and the total surface area of ​​the blind holes is 50% of the surface area of ​​the metal matrix layer.

[0050] The polymer matrix in the self-lubricating layer 2 is polytetrafluoroethylene, and the additives in the self-lubricating layer include solid lubricant and wear-resistant ag...

Embodiment 2

[0063] A self-lubricating bearing uses the self-lubricating double-layer composite material of the present invention, and its structure further includes that the bearing is hollow cylindrical, and the thickness of the self-lubricating layer 2 is 0.03mm.

[0064] The metal base layer 1 is made of carbon steel plate, and the surface of the metal base plate is roughened by brushing and sandblasting.

[0065] The blind holes on the surface of the metal base layer are cylindrical blind holes 3, and the blind holes are evenly distributed on the metal base layer 1. The diameter of the blind holes is 0.5 mm, the depth of the blind holes is 0.5 mm, and the total surface area of ​​the blind holes is 1 / 2 of the surface area of ​​the metal base layer. 35%.

[0066] The polymer matrix in the self-lubricating layer 2 is polyether ether ketone. The additives in the self-lubricating layer include solid lubricant and anti-wear agent, and the solid lubricant is graphite; the anti-wear agent is...

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Abstract

The invention discloses a self-lubricating double-layer composite material and a preparation method thereof, and belongs to the field of self-lubricating materials. The structure of the self-lubricating double-layer composite material comprises a metal matrix layer and a self-lubricating layer, wherein a blind hole is arranged on one side of the metal matrix layer, the self-lubricating layer is embedded on the surface of the metal matrix layer, the thickness of the metal matrix layer is 1-50 mm, the thickness of the self-lubricating layer is 0.03-1.0 mm, the self-lubricating layer comprises apolymer matrix and an additive, and the adding amount of the additive is 5-35 wt%. According to the present invention, the self-lubricating double-layer composite material is obtained by raw materialpre-mixing raw materials, hole forming, compounding and heating curing; the preparation method has advantages of simple preparation process, low energy consumption and less pollution; and the obtaineddouble-layer composite material has strong bonding force and good self-lubricating property, can be used under severe working conditions, and can reduce the occurrence of peeling failure.

Description

technical field [0001] The invention belongs to the field of self-lubricating materials, in particular to a self-lubricating double-layer composite material and a preparation method thereof. Background technique [0002] At present, the self-lubricating materials with polymer-based composite materials as the self-lubricating layer mainly have three layers in the market, including the metal matrix layer, the middle layer and the surface layer of the self-lubricating composite material. [0003] The intermediate layer usually consists of a binder or a layer of sintered spherical copper powder. The three-layer self-lubricating composite material compounded with adhesive is limited by the adhesive and bonding compound process conditions, and it cannot meet the use requirements under some high-temperature operating conditions. It will cause peeling failure, and the adhesive has certain toxicity, which is easy to cause environmental pollution. Although the three-layer composite ...

Claims

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Application Information

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IPC IPC(8): B29C65/70B29K27/18B29L9/00
CPCB29C65/70B29C66/00141B29C66/0224B29C66/026B29K2027/18B29L2009/003
Inventor 郑合静章然高文娟陈山虎房卫东
Owner 合肥波林新材料股份有限公司
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