Active-carbon thermal-insulation material and preparation method thereof

Abstract

The invention relates to an active-carbon thermal-insulation material and a preparation method thereof, belongs to the technical field of materials, especially belongs to the technical field of carbon, and concretely, relates to a heat-insulation warm-keeping material and a preparation method for the heat-insulation warm-keeping material. The material is obtained by performing charring and crushing on some vegetable raw materials, mixing with carbon black according to a certain ratio, pouring into a stirring pot, adding a bonding agent, uniformly stirring under a warm-keeping condition and performing compression molding. Light porous active carbon is formed by utilizing easily-available cheap herbaceous plants through charring and has low heat-conduction electric-conduction coefficients, and carbon black is added as a reinforcing agent, so that the thermal-insulation electric-insulation properties are provided, and also the effect of enhancing the strength is given play. The obtained material is spread at the bottom of a resistance furnace and has the characteristics of being capable of bearing gravity of a product at the upper part without being damaged; the thermal-insulation material is easy for paving, and a damaged block is easy to repair; the material is good in thermal insulation effect, helps to reduce energy consumption, and is economic and practical; and the material helps to solve the phenomena that a conventional resistance-furnace thermal-insulation material is complex for paving and bad in thermal-insulation effect and causes flying of dust.

Description

technical field [0001] The invention relates to an activated carbon thermal insulation material and a preparation method thereof, belonging to the technical field of materials, in particular to the technical field of carbon. Specifically, it relates to a thermal insulation material and a preparation method of the thermal insulation material. Background technique [0002] Activated carbon belongs to amorphous carbon, porous, large surface area, high temperature resistance, low thermal conductivity; carbon black is also a kind of amorphous carbon, which is a powdery carbon material with extremely fine particles, which has excellent high temperature resistance and heat insulation performance , At the same time, it can enhance the mechanical strength of the product and belongs to the non-conductor. At present, the temperature of some industrial resistance furnaces is as high as 2600 °C, especially the insulation material of graphitization furnace usually uses quartz sand as the ...

AI Technical Summary

Problems solved by technology

The purpose is to solve the shortcomings of existing high-temperature resistance furnaces, silicon carbide furnaces, graphitization furnaces, etc., such as poor heat preservation effect, complicated operation, and poor environmental conditions, and provide an activated carbon heat preservation material to overcome the large heat loss and serious current loss of the existing furnace type. Disadvantages such as complicated operation and large dust