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Wear-resistant hard composite material using graphene as filler and preparation method thereof

A technology of composite materials and composite material plates, applied in the field of wear-resistant hard polymer composite materials and their preparation, to achieve excellent mechanical properties, prevent passivation cracks, and high specific surface area

Active Publication Date: 2014-03-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using graphene as a filler to improve the wear resistance of PVC composites has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the wear-resistant hard graphene / polymer-based composite material of the present invention is characterized in that it comprises the following processes:

[0029] (1) Preparation of a powder that is uniformly mixed with graphene and polymer matrix resin particles

[0030] First, mix appropriate amount of rare earth stabilizer and acrylate with polymer matrix resin particles, then slowly add graphene in batches under stirring, and stir at high speed for 5-10 minutes to obtain a uniformly mixed powder of graphene and polymer matrix. Among them, the role of acrylate is to accelerate the plasticization process of PVC, improve the rheology of PVC fluid and improve the appearance quality of PVC products.

[0031] (2) Add the above-mentioned powder into the torque rheometer, and knead for 3-10 minutes at a temperature of 150-280 ° C and a speed of 50-100 rpm to obtain a molten compound as a wear-resistant hard composite material Precursor;

[0032](...

Embodiment 1

[0036] Weigh 69g of polyvinyl chloride (PVC, average particle size is about 140μm), 1.03g of acrylic acid ester (ACR), 4.83g of stearic acid rare earth stabilizer (powder particle size is about 280μm), mix the three and use high speed The mixer (rotating speed 5000rpm) stirs evenly, then weighs 0.15g of graphene powder and adds it to the above mixed powder, and then uses a high-speed mixer (rotating speed 5000rpm) to stir evenly, and finally obtains a uniformly mixed powder of graphene and polymer matrix. The above-mentioned mixed powder was added into a torque rheometer, the temperature was raised to 165° C., and the mixture was mixed for 5 minutes at a rotational speed of 60 rpm to obtain a bulk composite material. The above materials are hot-pressed on a flat vulcanizing machine preheated to 185°C, and kept under pressure for 10 minutes under a pressure of 15MPa to obtain a rigid graphene / PVC composite material sheet with a thickness of 1.0mm .

[0037] Samples were taken ...

Embodiment 2

[0039] Weigh 69g of PVC (particle size is about 140μm), 1.03g of ACR, 4.83g of fatty acid rare earth stabilizer (powder particle size of 350μm), mix the three and use a high-speed mixer (speed 6000rpm) to stir evenly, and then weigh 0.828 g of graphene powder was added to the mixed powder and stirred evenly with a high-speed mixer (6000 rpm), to obtain a uniformly mixed powder of graphene and polymer matrix. Put the uniformly mixed powder into the torque rheometer, raise the temperature to 165°C, and knead for 5 minutes at a speed of 60rpm. After stopping the mixing, put the block composite material from the torque rheometer Remove and cool to room temperature. Then the bulk composite material was hot-pressed on a flat vulcanizing machine preheated to 185°C, and kept under pressure for 10 minutes at a pressure of 15MPa, and then cooled to room temperature to obtain a hard graphene / PVC composite sheet. The thickness of the graphene / polymer matrix composite plate is 1.5 mm.

...

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Abstract

The invention belongs to the field of macromolecular composite materials and in particular relates to a wear-resistant hard composite material using a novel nanocarbon material graphene as a filler and a preparation method thereof. The composite material is a hard composite material plate formed by blending and hot-pressing a polymer matrix and the graphene, and is prepared through the following steps: mixing the graphene, the polymer matrix and a rare earth stabilizing agent uniformly; melting and blending by using a torque rheometer to obtain a block-shaped composite; hot-pressing by using a flat vulcanizing machine to obtain the hard composite plate, wherein the composite material comprises 0.1-3wt% of two-dimensional graphene nanocarbon material. The polymer-based composite material using the carbon material as the filler has the characteristics of light weight, easiness in processing, corrosion resistance, friction resistance and the like, and is widely applied in the fields of national defense industry and automobiles. The composite material can meet the increasingly higher tribological performance requirements of the fields of aviation, aerospace, automobiles, machinery and the like on the existing high-performance polymer composite materials; the preparation process of the composite material is simple; industrial production is realized easily.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a wear-resistant hard polymer composite material with novel nano-carbon material-graphene as a filler and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC), as one of the four major engineering materials, is a widely used general-purpose plastic. PVC resin has the advantages of flame retardancy, chemical corrosion resistance, wear resistance, excellent electrical insulation and high mechanical strength, making it possible to produce plastic products that meet various needs by adding additives and other methods during processing , more commonly used such as wire casing, flooring, etc. With the rapid development of technologies in aviation, aerospace, automobiles, machinery and other fields, high-performance polymers and their composite materials play an increasingly important role due to their excellent tribological propert...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L25/06C08L67/02C08L23/06C08L23/12C08K3/04
Inventor 曾尤谢桂媛王函英哲任文才刘畅成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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