Oriental Carbon Consulting purchases HTRT-1600 ultra-high temperature conductive material resistivity tester

The construction of a special graphite carbon material project with an annual output of 30000 tons has taken shape

Recently, the reporter visited the Oriental Carbon 30000 ton special graphite carbon material construction site located northwest of the intersection of Gongye Avenue and Gongye 1st Road in Shilong District, Pingdingshan City. The neatly constructed gray steel building material structure presented itself, outlining the physical appearance of the entire project.

Dongfang Carbon was founded in 2006 and is a high-tech enterprise specializing in the research and development, production, and sales of special graphite materials. It is listed as one of the fourth batch of specialized, refined, and new "little giant" enterprises by the Ministry of Industry and Information Technology, a national intellectual property advantage enterprise, and a national green factory. Its main products are widely used in fields such as photovoltaics, semiconductors, new energy batteries, machinery, electronics, and aerospace. The company has 142 independent intellectual property rights as of December 2023, including 9 inventions and 133 utility models.

Due to the continuous growth of market demand, in order to further meet the demand and expand production capacity, Dongfang Carbon raised a net amount of 369 million yuan in the initial stage of listing, which will be used for the first phase construction of a special graphite carbon material project with an annual output of 30000 tons.

Dongfang Carbon Consulting purchases HTRT-1600 ultra-high temperature conductive material resistivity tester

The HTRT-1600 system is mainly composed of a high-precision and high stability small current source, a high-precision AD sampling chip, an embedded chip, an intelligent management and analysis software for the upper computer, and a vacuum multi-stage temperature control heating device. It is an intelligent storage and analysis instrument for ultra-high temperature conductive resistivity. The testing of conductive metal samples is carried out by arbitrarily setting heating according to the testing process requirements, and analyzing the internal structural changes of the metal such as phase transition, carbides, solid solubility, etc. through precise measurement of resistivity during the process. The device can be directly powered on for heating and applied to graphite self heating, and can also be tested in a high-temperature environment. It is currently an important equipment for researching conductive materials, as well as an important scientific research equipment for universities and production testing units.

1、 Main performance: The electrical characteristics of conductive materials are mainly characterized by resistivity. The factors that affect resistivity include temperature, impurity content, cold deformation, heat treatment, etc. The influence of temperature is often represented by the temperature coefficient of the electrical resistivity of conductive materials. Except for near melting point and ultra-low temperature, the resistivity varies linearly with temperature in the general temperature range.

2、 Composite polymer conductive materials are made by filling composite, surface composite, or layered composite of general polymer materials and various conductive substances. The main varieties include conductive plastics, conductive rubber, conductive fiber fabrics, conductive coatings, conductive adhesives, and transparent conductive films.

The fundamental reason why graphite can serve as a conductive material lies in its structure and electronic properties. Graphite is an allotrope of carbon, composed of layers of carbon atom planes, each layer called graphene. In these planes, carbon atoms form a hexagonal honeycomb structure with sp ^ 2 hybridized orbitals, and each carbon atom is connected to its three nearest carbon atoms through sigma bonds, forming a very stable two-dimensional plane. In addition, each carbon atom also has an electron on the puz orbital that does not participate in the formation of the σ bond, but contributes to the π bond, forming a π electron cloud.

These π electrons are highly delocalized within the graphene layer and can move freely, thus exhibiting excellent electrical conductivity within the graphene layer. When these graphene layers are stacked to form graphite, although the interlayer interactions are weak (connected by van der Waals forces), the electrons within the layers can still provide good conductivity. This structure enables graphite to exhibit excellent electrical conductivity at the macroscopic level.

In addition to good conductivity, graphite also has the following characteristics, making it an excellent conductive material:

1. Chemical stability: Graphite has high chemical stability and is not easily reactive with most chemical substances.

2. High temperature stability: Graphite can still maintain its conductivity at high temperatures and is suitable for high-temperature environments.

3. Mechanical properties: Graphite has certain flexibility and strength, and can be processed into different shapes and sizes to meet different application needs.

4. Cost effectiveness: Compared with other conductive materials, graphite has the advantage of low cost and is suitable for large-scale applications.

Therefore, graphite is widely used in battery electrode materials, conductive coatings, conductive adhesives and other fields, and is a very important conductive material.

3、 Purpose:

1. Conductivity testing of graphene metal materials

2. Research on Metal Materials

3. Measurement of resistivity and conductivity of carbon based conductive materials

4. Measurement of resistivity and conductivity of metal oxide based conductive materials

5. Measurement of metal conductivity of bars, pipes, and profiles