Heat-conducting friction-resistant polyformaldehyde composite material and preparation method thereof

A composite material and anti-friction technology, which is applied in the field of anti-friction polyoxymethylene composite materials and its preparation, can solve the problems that polyoxymethylene needs to be further improved, and achieve the effect of low friction coefficient and wear rate

Active Publication Date: 2014-03-05
大连路阳科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to further improve the friction performance of POM, many researchers at home and abroad blend POM with other polymers (such as polytetrafluoroethylene, polyurethane) or use fibers (such as CF, GF, aramid fibers, whiskers) and inorganic nano Particles (graphite, molybdenum disul

Method used

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  • Heat-conducting friction-resistant polyformaldehyde composite material and preparation method thereof
  • Heat-conducting friction-resistant polyformaldehyde composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take by weighing 120g polyoxymethylene resin, 0.12g antioxidant 2246 and mix, the mixture is added into open mill and carry out masticating; After masticating for 2 minutes, 6g polytetrafluoroethylene and 6g polyurethane elastomer are respectively added into open mill; Refining for 2 minutes, adding 24g of wollastonite, 6g of copper powder and 0.6g of zinc stearate after surface treatment to the masticated product obtained in the previous step and mixing for 10 minutes, and then compression molding the blend on a flat vulcanizing machine , the compression molding temperature is 170-180° C., and the hot pressing pressure is 10 MPa to obtain the polyoxymethylene composite material.

Embodiment 2

[0030] Take by weighing 120g polyoxymethylene resin, 0.12g antioxidant 2246 and mix, the mixture is added into open mill and carry out masticating; After masticating for 2 minutes, 6g polytetrafluoroethylene and 6g polyurethane elastomer are respectively added into open mill; Refining for 2 minutes, adding 18g of wollastonite, 12g of copper powder and 0.6g of zinc stearate after surface treatment to the masticated product obtained in the previous step and mixing for 10 minutes, and then compression molding the blend on a flat vulcanizer Molding, the compression molding temperature is 170-180° C., and the hot pressing pressure is 10 MPa to obtain a polyoxymethylene composite material.

Embodiment 3

[0032] Take by weighing 120g polyoxymethylene resin, 0.12g antioxidant 2246 and mix, the mixture is added into open mill and carry out mastication; After masticating for 2 minutes, 12g polytetrafluoroethylene, 6g polyurethane elastomer are added into open mill respectively; Refined for 2 minutes, respectively added 12g of wollastonite, 18g of copper powder, and 1.2g of zinc stearate to the masticated product obtained in the previous step and mixed for 10 minutes, and then pressed the blend on a flat vulcanizer Molding, the compression molding temperature is 170-180°C, and the hot pressing pressure is 10MPa to obtain a polyoxymethylene composite material.

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Abstract

The invention belongs to the field of polymer composite materials, and relates to a heat-conducting friction-resistant polyformaldehyde composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 100 parts of polyformaldehyde resin, 0.1-1 part of an antioxidant, 5-20 parts of polytetrafluoroethylene, 5-10 parts of polyurethane elastomer, 5-30 parts of wollastonite, 5-50 parts of copper powder, 0.1-2 parts of a coupling agent and 0.5-3 parts of a lubricant. The treated wollastonite and copper powder are mixed with polyformaldehyde, polytetrafluoroethylene, polyurethane, the antioxidant and the lubricant through a two-roll mixing mill, and then the mixture is subjected to tabletting in a flat vulcanizing machine to obtain the friction-resistant polyformaldehyde composite material. The composite material prepared by the method disclosed by the invention has the characteristics of low friction factor and good mechanical properties, and can be applied to preparation of wear-resistant parts including bearings, gears and the like.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a friction-resistant polyoxymethylene composite material and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM) is an engineering plastic with excellent comprehensive properties, with a high degree of crystallinity (generally up to 70% to 85%), a glass transition temperature Tg of -30°C, a melting point of 182°C, and a density of 1.4 to 1.6g / cm 3 , is one of the resin varieties in plastics whose specific strength and specific stiffness are close to metal. POM has high strength and rigidity, good dimensional stability, excellent corrosion resistance, wear resistance, self-lubrication and creep resistance, no noise, fatigue resistance, convenient processing and molding, cheap and easy-to-get raw materials, and is widely used in the fields of machinery and electronics. In recent years, with the improvement of the use environm...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08L27/18C08L75/04C08K13/06C08K9/06C08K3/34C08K3/08
Inventor 曲敏杰吴立豪万长宇
Owner 大连路阳科技开发有限公司
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