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High abrasion proof conductive pyrophyllite-graphite composite material and preparation method thereof

A composite material and high wear-resistant technology, which is applied in the direction of manufacturing tools and ceramic molding machines, etc., can solve the problems of serialization, insufficient refinement, and no industrial chain has yet been formed, so as to achieve cost reduction, good electrical conductivity, and prolong service life Effect

Inactive Publication Date: 2011-10-12
HANGZHOU TENGSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the serialization and refinement of pyrophyllite products are not enough, and a real industrial chain has not yet been formed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 4g of graphite powder (1-2 μm in particle size) and 46g of pyrophyllite powder (325 mesh in particle size), stir them evenly and put them into a planetary ball mill for wet ball milling for 1 hour, wherein the mass ratio of water to powder is 1: 1. Dry in a blast drying oven at 80°C for 24 hours to obtain the high wear-resistant conductive pyrophyllite powder-graphite composite material, and the speed of the ball mill is controlled at 150r / min.

[0013] Weigh 2.0 g of the above-mentioned high wear-resistant conductive pyrophyllite powder-graphite composite material, put it into a mold, and press it with a hydraulic press at a pressure of 5-10 MPa, keep the pressure for 3 minutes, demould, and measure the volume resistivity of the sample to 110Ω·cm .

Embodiment 2

[0015] Weigh 5g of graphite powder (1-2 μm in particle size) and 45g of pyrophyllite powder (with a particle size of 800 mesh), stir them evenly and put them into a planetary ball mill for 6 hours of wet ball milling, wherein the mass ratio of water to powder is 1.5: 1. Dry at 80°C for 24 hours in a blast drying oven to obtain the high wear-resistant conductive pyrophyllite powder-graphite composite material, and the speed of the ball mill is controlled at 200r / min.

[0016] Weigh 2.0 g of the above-mentioned high wear-resistant conductive pyrophyllite powder-graphite composite material, put it into a mold, and press it with a hydraulic press at a pressure of 5-10 MPa, keep the pressure for 3 minutes, demould, and measure the volume resistivity of the sample to 25Ω·cm .

Embodiment 3

[0018] Weigh 10g of graphite powder (1-2 μm in particle size) and 40g of pyrophyllite powder (600 mesh in particle size), stir them evenly and put them into a planetary ball mill for wet ball milling for 3 hours, wherein the mass ratio of water to powder is 1.25: 1. Dry in a blast drying oven at 80°C for 24 hours to obtain the high wear-resistant conductive pyrophyllite powder-graphite composite material, and the speed of the ball mill is controlled at 150r / min.

[0019] Weigh 2.0g of the above-mentioned high wear-resistant conductive pyrophyllite powder-graphite composite material, put it into a mold, press it with a hydraulic press, the pressure is 5-10MPa, keep the pressure for 3 minutes, demould, and measure the volume resistivity of the sample to 12Ω·cm .

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Abstract

The invention discloses a high abrasion proof conductive pyrophyllite-graphite composite material and a preparation method thereof. The high abrasion proof conductive pyrophyllite-graphite composite material is produced by a method including the following steps of: evenly mixing pyrophyllite powder with graphite powder, performing wet ball milling on the mixed materials in a ball mill, drying the obtained mixed powder and then performing press forming on the powder by means of an oil press, thereby obtaining the high abrasion proof conductive pyrophyllite-graphite composite material. The invention develops the high abrasion proof conductive pyrophyllite-graphite composite material with pyrophyllite as the major raw material, thereby realizing comprehensive utilization of mineral resources; therefore, preparation of a low-cost high-performance conductive material becomes possible.

Description

(1) Technical field [0001] The invention relates to a high wear-resistant conductive pyrophyllite-graphite composite material and a preparation method thereof, in particular to a method for preparing a high wear-resistant conductive pyrophyllite-graphite composite material at low cost. (2) Background technology [0002] Inorganic conductive powder is added to coatings, plastics, rubber, and chemical fibers. It has antistatic, conductive, and electromagnetic wave shielding functions. It is widely used in aviation, electronics, automobiles, building materials, chemicals, military and other fields. Although various metal powders have strong conductivity, except for silver, aluminum, nickel, copper and other powders are easy to oxidize and have poor corrosion resistance; in addition, metal powders are generally dense and easy to sink to the bottom and agglomerate, so the dispersion is not good. In recent years, conductive coatings that are easy to paint and easy to use have achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/00
Inventor 张俭张津瑞
Owner HANGZHOU TENGSHI TECH