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A kind of antistatic, friction-resistant and wear-resistant polyoxymethylene material and preparation method thereof

A polyoxymethylene material and friction-resistant technology, which is applied in the field of polyoxymethylene materials and its preparation, can solve the problems of the decline in the mechanical properties of polyoxymethylene and reduce the friction coefficient of polyoxymethylene, and achieve excellent antistatic performance, good ion conductivity, and good anti-static properties. The effect of static electricity

Active Publication Date: 2021-10-22
安徽贺赢新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Xiang Dinghan and others from Nanjing University of Aeronautics and Astronautics used polytetrafluoroethylene (PTFE) and inorganic particles to fill polyoxymethylene together to improve the friction performance of polyoxymethylene, successfully reduced the friction coefficient of polyoxymethylene, and improved the friction performance of polyoxymethylene. However, the mechanical properties of its polyoxymethylene decreased

Method used

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  • A kind of antistatic, friction-resistant and wear-resistant polyoxymethylene material and preparation method thereof
  • A kind of antistatic, friction-resistant and wear-resistant polyoxymethylene material and preparation method thereof
  • A kind of antistatic, friction-resistant and wear-resistant polyoxymethylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Step (1): Dry polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide and polytetrafluoroethylene in vacuum at 80°C for 24 hours:

[0064] Step (2): Add 3kg of dried polyoxymethylene, 15g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and 300g of polytetrafluoroethylene into the extruder for melt extrusion at 180°C. The rotation speed is 50rpm, the extruded material is water-cooled, sheared and granulated, and the mixture is obtained:

[0065] Step (3) The mixture is discharged from the melt extrusion equipment, water-cooled to room temperature, and granulated to obtain polyoxymethylene material.

[0066] The mass ratio of polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and polytetrafluoroethylene in the polyoxymethylene material prepared in Example 1 is 100:0.5:10

[0067] The test results of the samples are shown in Table 1

Embodiment 2

[0069] Step (1): Dry polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide and polytetrafluoroethylene in vacuum at 80°C for 24 hours:

[0070] Step (2): Add 3kg of dried polyoxymethylene, 30g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and 300g of polytetrafluoroethylene into the extruder for melt extrusion at 180°C. The rotation speed is 50rpm, the extruded material is water-cooled, sheared and granulated, and the mixture is obtained:

[0071] Step (3) The mixture is discharged from the melt extrusion equipment, water-cooled to room temperature, and granulated to obtain polyoxymethylene material.

[0072] In the polyoxymethylene material prepared in Example 2, the mass ratio of polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and polytetrafluoroethylene is 100:1:10

[0073] The test results of the samples are shown in Table 1

[0074] The materials prepared in Comparative Examples 1-3 and ...

Embodiment 3

[0095] Step (1): Dry polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide and polytetrafluoroethylene in vacuum at 80°C for 24 hours:

[0096] Step (2): Add 3kg of dried polyoxymethylene, 45g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and 300g of polytetrafluoroethylene into the extruder for melt extrusion at 180°C. The rotating speed is 50rpm, the extruded material is water-cooled, sheared and granulated to obtain a mixture;

[0097] Step (3) The mixture is discharged from the melt extrusion equipment, water-cooled to room temperature, and granulated to obtain polyoxymethylene material.

[0098]The mass ratio of polyoxymethylene, tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt and polytetrafluoroethylene in the polyoxymethylene material prepared in Example 3 is 100:1.5:10

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Abstract

The invention discloses an antistatic, friction-resistant and wear-resistant polyoxymethylene material and a preparation method thereof. The polyoxymethylene material is a mixture of polyoxymethylene, ionic liquid and polytetrafluoroethylene. Its preparation method is to vacuum-dry polyoxymethylene, ionic liquid and polytetrafluoroethylene at 80-120°C for 24-48 hours respectively; dry the polyoxymethylene, ionic liquid and polytetrafluoroethylene according to the mass ratio of 100:0.1-2 : 1-20, put into melt extrusion equipment and carry out melt extrusion at 170-200 DEG C to obtain a mixture; discharge the mixture from the melt extrusion equipment and lower to normal temperature to obtain a polyoxymethylene material. The polyoxymethylene material in the present invention has excellent antistatic performance and friction and wear resistance, and its preparation method only needs to use common melting extrusion equipment, and the industrial preparation is simple.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a polyoxymethylene material with antistatic properties, friction resistance and wear resistance obtained by using ionic liquid and polytetrafluoroethylene and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM, polyformaldehyde) has good oil resistance, corrosion resistance, chemical resistance, wear resistance, self-lubrication, creep resistance and low water absorption, outstanding fatigue resistance, so polyoxymethylene is a comprehensive It is a thermoplastic engineering plastic with excellent performance and is one of the five major engineering plastics. Because it has the hardness, strength and rigidity similar to metal, the strength per unit mass is higher than most metals, so it is called "Sai Steel". In addition, it has good cost performance and the potential of physical modification and chemical modification, and is an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08L27/18C08K5/435
Inventor 李勇进王莲陈琴
Owner 安徽贺赢新材料科技有限公司
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