Preparation method and application method of graphene-nano polytetrafluoroethylene composite modified filler

A polytetrafluoroethylene, compound modification technology, applied in the field of new materials, can solve problems such as difficult to realize industrial production, environmental protection performance to be discussed, efficiency of impurity removal reaction, etc., to achieve improved compatibility, large industrial application prospects, dispersion good effect

Active Publication Date: 2019-06-21
深圳市驭晟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

Although this method can uniformly disperse graphene and nano-polytetrafluoroethylene, it needs to introduce many chemical reagents, the environmental protection performance is questionable, and the process is complicated, the removal of impurities and the reaction efficiency are low, and it is difficult to realize industrial production at present.

Method used

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  • Preparation method and application method of graphene-nano polytetrafluoroethylene composite modified filler
  • Preparation method and application method of graphene-nano polytetrafluoroethylene composite modified filler
  • Preparation method and application method of graphene-nano polytetrafluoroethylene composite modified filler

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Embodiment 1

[0026] Example 1, the present invention specifically prepares graphene-nano polytetrafluoroethylene composite modified filler through the following flow process:

[0027] First, take 10 parts by weight of powdered graphene and add it to 800 parts by weight of deionized water, and heat it to 80°C in a water bath and mix and stir to fully dissolve the graphene to obtain solution A; take 2 parts by weight of silane coupling agent 15 parts by weight of ethanol and 1 part by weight of deionized water were mixed and stirred for 30 minutes to obtain solution B, and 5 parts by weight were added to solution A, and then the reaction temperature was kept at 80°C, reacted in a water bath for 3 hours, and then cooled to room temperature , filtered and washed with deionized water to obtain a modified graphene filler M with lipophilic properties. Pretreatment with a coupling agent can prevent the fillers from stacking and agglomerating due to van der Waals force. Carry out batching according...

Embodiment 2

[0034] First, take 10 parts by weight of powdered graphene and add it to 800 parts by weight of deionized water, and heat it to 80°C in a water bath and mix and stir to fully dissolve the graphene to obtain solution A; take 2 parts by weight of silane coupling agent 15 parts by weight of ethanol and 1 part by weight of deionized water were mixed and stirred for 30 minutes to obtain solution B, and 5 parts by weight were added to solution A, and then the reaction temperature was kept at 80°C, reacted in a water bath for 3 hours, and then cooled to room temperature , filtered and washed with deionized water to obtain a modified graphene filler M with lipophilic properties. Pretreatment with a coupling agent can prevent the fillers from stacking and agglomerating due to van der Waals force. Carry out batching according to graphene filler M and nano polytetrafluoroethylene weight ratio is 1:5, and add the water-ethanol mixed solution that the mass ratio of adding is 3:2 and stir an...

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Abstract

The invention discloses a preparation method and an application method of graphene-nano polytetrafluoroethylene composite modified filler. Modified graphene and nano-spherical polytetrafluoroethylenefiller are compounded, and nano-spherical polytetrafluoroethylene and flaky graphene filler are uniformly compounded by a binder with a spray drying method, so that the prepared composite filler not only has abrasion resistance of graphene, but also has the lubricating property of nano-polytetrafluoroethylene. When the composite filler is used, the method is relatively simple, all that is requiredis that the composite filler and a small amount of small molecular oil are added to a polymer matrix together, stirred evenly, and then granulated by a granulator. Compared with existing materials, the composite filler can effectively reduce the friction coefficient and wear rate of materials, and can improve the mechanical property of the materials.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to the preparation and application method of a graphene-nano polytetrafluoroethylene composite modified filler. Background technique [0002] With the advancement of science and technology and the development of industry, more and more automation equipment is currently used in various industries. The process of automation is inseparable from the operation and action of mechanical parts and mechanisms, and mechanical parts are inevitable in the process of operation. Friction and wear will occur. Studies have pointed out that friction consumes more than 1 / 3 of the world's primary energy, and 60% of the damage to mechanical parts is caused by wear. Therefore, it is of great practical significance to study wear-resistant and lubricating composite materials. Friction fillers are particularly critical. And anti-wear and anti-friction materials have always been the key research obj...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08L23/06C08L27/18C08L91/06C08K9/06C08K3/04
Inventor 陈威
Owner 深圳市驭晟新材料科技有限公司
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