Conductive cement with nano-graphite

Abstract

The invention belongs to the technical fields of building material industrial technology and overvoltage and grounding technology, and relates to conductive cement added with nano-graphite, which comprises the following compositions by weight percentage: 40 to 48 percent of cement, 5 to 30 percent of nano-graphite, 6 to 15 percent of carbon element, 1 to 8 percent of activated bentonite, 1 to 6 percent of copper sulphate, 1 to 6 percent of acrylamide, 1 to 6 percent of conductive pearl powder and 1 to 8 percent of asbestos. The conductive cement reduces corrosion on metal conductors, can also strengthen water absorption, moisture retention, and stability under the action of heavy current, further reduces the corrosivity of the conductive cement, and improves the performance of conductive cement products.

Description

technical field [0001] The invention relates to conductive cement, which belongs to the field of building material industry technology, overvoltage and grounding technology, and in particular to conductive cement added with nano-graphite. Background technique [0002] With the development of human society and science and technology, modern architecture requires that cement materials not only maintain the original characteristics, but also some special functional properties to meet the needs of multi-functional and intelligent buildings, but due to the traditional cement functions currently used Single, can no longer meet the needs of modern construction projects and the needs of new technologies, especially in the performance of controlling the grounding resistance value, it is necessary to make certain improvements to the traditional cement materials currently used. [0003] In the current existing technology, the method to solve the technical problem of controlling the per...

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Problems solved by technology

[0006] The nano-graphite conductive cement adopting the above-mentioned technical solution formula, because the technical solution of the present invention uses a certain proportion of nano-graphite, the nano-graphite can be prepared according to the document [Guo chen, etal.Preparation and characterization of graphite nanosheets from ultrasonic powdering technique[J]. Carbon, 2004, 42 (4): 753-759] the preparation method of recording, expanded graphite is soaked in the ethanol aqueous solution of volume ratio 65:35 12 hours, pulverizes several hours in ultrasonic cleaner then, makes nano-graphite, When this kind of nano-graphite is combined with cement, it has good dispersion, is not easy to agglomerate, and is relatively easy to form a conductive network, which enhances the conductivity; at the same time, a certain proportion of carbon, activated bentonite, copper sulfate, acrylamide, and conductive pearl powder are also used. , asbestos, the combination of these ingredients and materials can increase the strength, cohesion, water retention and reduce the shrinkage of cement products after proper proportion combination, solve the problem of low strength of conductive cement products, and enhance the mechanical strength of cement , and at the same time improve the cohesion and water retention of cement and reduce the shrinkage and pH value of cement products, and improve the performance of conductive cement products

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