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Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof

An ultra-high molecular weight and composite material technology, which is applied in the field of ultra-high molecular weight polyethylene high wear-resistant and high-temperature resistant composite materials and preparation, can solve the problems of poor flame retardant performance, cannot be used, and the wear resistance needs to be improved, and achieves a water absorption rate. The effect of low and high wear resistance, rigidity and surface hardness

Inactive Publication Date: 2016-08-24
CHONGQING BAWANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ultra-high molecular weight polyethylene has many excellent physical properties, it also has shortcomings: its flame retardancy is poor, and it cannot be used in high temperature environments. Secondly, its wear resistance needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, 75 parts of ultra-high molecular weight polyethylene, 5 parts of modifier, 10 parts of superfine calcium carbonate powder, and 10 parts of flame retardant are put into a high-speed mixer and mixed at high speed until uniform, and the mixture is put into a mold. Then, under the pressure of 8-10MPa, cold press the mold for 5-10 minutes to remove the air. After the air is exhausted, hot press at a pressure of 20MPa and a temperature of 170°C-200°C for 80-100 minutes. The composite material of the present invention can be obtained by cooling to room temperature under the condition of maintaining 15-18 MPa in 1 minute and demoulding.

Embodiment 2

[0017] First, 75 parts of ultra-high molecular weight polyethylene, 10 parts of modifier, 5 parts of superfine calcium carbonate powder, and 10 parts of flame retardant are put into a high-speed mixer and mixed at high speed until uniform, and the mixture is put into a mold. Then, under the pressure of 8-10MPa, cold press the mold for 5-10 minutes to remove the air. After the air is exhausted, hot press at a pressure of 20MPa and a temperature of 170°C-200°C for 80-100 minutes. The composite material of the present invention can be obtained by cooling to room temperature under the condition of maintaining 15-18 MPa in 1 minute and demoulding.

Embodiment 3

[0019] First, 75 parts of ultra-high molecular weight polyethylene, 10 parts of modifier, 10 parts of superfine calcium carbonate powder, and 5 parts of flame retardant are put into a high-speed mixer and mixed at high speed until uniform, and the mixture is put into a mold. Then, under the pressure of 8-10MPa, cold press the mold for 5-10 minutes to remove the air. After the air is exhausted, hot press at a pressure of 20MPa and a temperature of 170°C-200°C for 80-100 minutes. The composite material of the present invention can be obtained by cooling to room temperature under the condition of maintaining 15-18 MPa in 1 minute and demoulding.

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PUM

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Abstract

The invention relates to an ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as a preparation method thereof. The method comprises the following steps: ultrahigh molecular weight polyethylene, a modifier, ultrafine calcium carbonate powder and a fire retardant are mixed in proportion; a mixture is placed in a mould, under a pressure, cold pressing is carried out for 5-10 minutes, and air is discharged; heating and pressurization are carried out; in a condition that the pressure is maintained, the temperature is cooled to 40 DEG C or below, and demoulding is carried out in order to obtained the composite material. The composite material has the advantages of excellent performance, low price, and good cost performance.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene high wear-resistant and high-temperature resistant composite material and a preparation method thereof, belonging to the technical field of polymer composite materials. Background technique [0002] Ordinary ultra-high molecular weight polyethylene generally refers to polyethylene with a matrix viscosity average molecular weight greater than 1.5 million, which has excellent impact resistance and wear resistance, low friction coefficient, good self-lubrication, and excellent stress resistance Cracking performance, chemical stability, extremely low water absorption, electrical insulation, biological inertness, etc. Based on the wear resistance and impact resistance of ultra-high molecular weight polyethylene, it is used to manufacture mechanical parts such as chemical valves, pumps, sealing rings, gears, picks, and conveyors, such as worm gears, bearings, bearing bushes, etc., to replac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/26C08K3/04C08K5/098B29C43/52
Inventor 谭光英刘廷川
Owner CHONGQING BAWANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD