High-strength wear-proof composite material and preparation method thereof

A composite material and high-strength technology. It is applied in the field of composite materials with high strength and wear resistance. It can solve the problems of insufficient strength and load-bearing capacity, large connection gaps, and complex molding, and achieve excellent sliding wear resistance. , good chemical stability, good fatigue resistance

Inactive Publication Date: 2016-06-29
JIANGSU INTCO MEDICAL PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the metal material is used, the part has good strength and load-carrying capacity, but the connection gap is large, it is easy to shake, and it is not resistant to impact and wear; Thickness is often thinner, easy to break, and its strength and bearing capacity cannot meet the requirements
Moreover, plastic injection molding is more complex and costly than metal stamping

Method used

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  • High-strength wear-proof composite material and preparation method thereof

Examples

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Effect test

example 1

[0029] Prepare as follows:

[0030] (1) Spread the 60-100 mesh spherical bronze powder flatly on the 1.8mm wall thickness SPCC steel plate, the thickness of the copper powder is 0.4mm, the sintering temperature is 900℃, the holding time is 30 minutes, nitrogen protection, and sintering to obtain a strong composite copper Powder board.

[0031] (2) Mix and dry each component of the material of the plastic layer according to the following mass percentages: PEEK (polyether ether ketone) 65%, PTFE (polytetrafluoroethylene) 10%, PI (polyimide) 24%, Graphite 1%.

[0032] (3) Put the copper powder board in the appeal step (1) into the cavity of the hot pressing mold as an insert, and then spread the plastic layer mixture in the appeal step (2) on the copper powder layer. The thickness is 2mm higher than the copper powder layer, pressurized to 1.5MPa, the cavity is heated to 330°C and kept at a constant temperature for 25 minutes, then pressurized to 7MPa, and heated to 360°C, then kept at...

Embodiment 2

[0035] (1) Spread the 60-100 mesh spherical bronze powder on a 3.0mm wall thickness SPCC steel plate. The thickness of the copper powder is 0.3mm, the sintering temperature is 880℃, the holding time is 40 minutes, nitrogen protection, and sintering to obtain a strong composite copper. Powder board.

[0036] (2) Mix and dry each component of the material of the plastic layer according to the following mass percentages: PEEK (polyether ether ketone) 55%, PTFE (polytetrafluoroethylene) 13%, PI (polyimide) 30%, Graphite 2%.

[0037] (3) Put the copper powder board in the above step (1) into the cavity of the hot pressing mold as an insert, and then spread the plastic layer mixture in the above step (2) on the copper powder layer. The thickness is 2.5mm higher than the copper powder layer, pressurized to 2MPa, the cavity is heated to 350°C and kept at a constant temperature for 30 minutes, then pressurized to 8MPa, and heated to 375°C, then kept at a constant temperature for 40 minutes...

Embodiment 3

[0040] (1) Spread the 60-100 mesh spherical bronze powder on the 0.5mm wall thickness SPCC steel plate, the thickness of the copper powder is 0.35mm, the sintering temperature is 850℃, the holding time is 35 minutes, nitrogen protection, and sintering to obtain a strong composite copper Powder board.

[0041] (2) Mix and dry each component of the material of the plastic layer according to the following mass percentages: PEEK (polyether ether ketone) 69%, PTFE (polytetrafluoroethylene) 15%, PI (polyimide) 15%, Graphite 1%.

[0042] (3) Put the copper powder board in the above step (1) into the cavity of the hot pressing mold as an insert, and then spread the plastic layer mixture in the above step (2) on the copper powder layer. The thickness is 3mm higher than the copper powder layer, pressurized to 1MPa, the cavity is heated to 320°C and kept at a constant temperature for 20 minutes, then pressurized to 6MPa, and heated to 370°C, then kept at a constant temperature for 30 minutes...

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Abstract

The invention discloses a high-strength wear-proof composite material which is prepared from a metal base body, a copper powder layer and a plastic layer. The metal base body and the copper powder layer are sintered at the high temperature to form a copper powder plate. The plastic layer is embedded into the copper powder layer, so that the metal base body and the plastic layer are tightly combined together. The plastic layer is prepared from, by mass, 55-70% of polyether-ether-ketone (PEEK), 10-15% of polytetrafluoroethylene (PTFE), 15-30% of polyimide (PI) and 1-2% of graphite. The invention further discloses a preparation method of the composite material. The high-strength wear-proof composite material has the advantages of being high in strength, resistant to impact and wear, free of pollution, environmentally friendly and nontoxic.

Description

Technical field [0001] The invention relates to a new type of composite material, in particular to a composite material with high strength and wear resistance. Background technique [0002] At present, with the development of the aerospace industry, automobile industry, mechanical industry, medical machinery and various transmission parts, the requirements for all kinds of skateboards, slides and connecting friction parts are getting higher and higher. In the wheelchair adjustment and operation structure, friction and impact will inevitably occur. For example: armrest adjustment slider, U-shaped bottom support, half-folded back, etc. [0003] These parts often require tight connections, high strength, impact resistance, friction reduction and wear resistance. However, in terms of practical application, these parts generally use metal cold-rolled steel plates, using stamping and spraying processes. Due to the use of metal materials, this part has good strength and load-bearing pr...

Claims

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Application Information

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IPC IPC(8): B32B15/08B32B15/085B32B27/20B32B27/28B32B27/32B32B9/00B32B37/06B32B37/10B32B15/20
CPCB32B15/08B32B9/007B32B15/085B32B15/20B32B27/20B32B27/281B32B27/288B32B27/322B32B37/06B32B37/10B32B2250/03B32B2260/025B32B2264/108B32B2305/30B32B2307/554B32B2307/558B32B2307/56B32B2311/12B32B2327/18B32B2371/00B32B2379/08B32B2605/00
Inventor 刘方毅王茂坤李进
Owner JIANGSU INTCO MEDICAL PROD CO LTD
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