A method of preparing pantograph metal-impregnated carbon slide material by using nano-carbon powder

Abstract

The invention belongs to the technical field of novel carbon materials, and provides a method for preparing a pantograph carbon-impregnated slide strip material by using nano carbon powder. The methodcomprises the following steps: 1, selecting and proportioning raw materials, wherein the raw materials include a dry material and a binder in a weight ratio of 65:35 to 74:26, the dry material includes an aggregate and a powder in a mass ratio of 60:40 to 80:20, the aggregate employs pitch coke which has a true density of 2.08 / cm<3> or more, an ash content of 0.20% or less, a sulfur content of 0.5% or less and a volatile matter content of 0.5% or less, the powder employs nano carbon powder with D50 of 30-80 nm, and the binder employs modified coal tar pitch which has a softening point of 110-120 DEG C, a coking value of 55% or more and an ash content of 0.30% or less; 2, performing grinding; 3, performing granulation extrusion; 4, performing roasting; 5, performing metal impregnation: after a calcined product is preheated, pouring the calcined product into a molten metal solution, placing the mixture in a vacuum device for vacummizing, performing preheating again, performing cooling to room temperature and then discharging the product. The metal-impregnated carbon slide strip material prepared by the preparation method of the invention has the advantages of stable structure and strong physical and chemical properties, and can be widely applied to the field of pantograph materials.

Description

technical field [0001] The invention belongs to the technical field of new carbon materials, and in particular relates to a method for preparing pantograph metal-impregnated carbon slider materials by using nano-carbon powder. Background technique [0002] With the development of science and technology, rail transit plays an increasingly important role in the national economy. Today, with the rapid development of my country's national economy, the rail transit industry, especially high-speed rail, bullet trains, and passenger and freight electric locomotives, is showing a booming situation. In countries with more developed railway electrification in the world, most of the catenary wires used are copper or copper alloy wires, and hard carbon slides or impregnated boards are widely used. Carbon skateboards have been developed in recent years. Carbon slides are generally used on European and American high-speed trains and have high mechanical strength. In the operation of ICE ...

AI Technical Summary

Problems solved by technology

Carbon skateboard materials in the prior art often have performance deficiencies due to various factors