Composition for obtaining a carbon-containing composite material

 

(57) Abstract:

The invention is intended for material and can be used to obtain catalysts, sorbents, film heaters. The composition contains, by weight. hours : graphite 100-500; carbon 35-50; antimony trioxide 30-40; chloroparaffin 15-20; phenol-formaldehyde resin 50-70; peroxide Dicumyl 0.3 to 1.0; polyurethane rubber 100; solvent, for example ethyl ester acetic acid 100-150. The composition has operational reliability, temperature stability on electronography surface, retains the basic geometric and physico-chemical characteristics regardless of operating voltage. 1 C.p. f-crystals, 2 tab.

The invention relates to the field of materials science and, in particular, to obtain carbon composite materials having conductivity, which can be used in various fields of national economy, for example, for the manufacture of thin film heaters, as carriers of catalysts and adsorbents, in electrocatalysis, electrosorption, electrochemistry, etc.

Known carbon-containing composite material having electrical conductivity containing particles Graffigna in the matrix of polyacrylonitrile or polyurethane (EP, 0197745, 1986).

The disadvantage of this material is low and short-term adhesion of the graphite particles to the matrix material.

Known composition to obtain a carbonaceous material used as a compact adsorbents containing carbon, phenol resin, silicon carbide, ethyl alcohol (EN, 2026735, 1995).

Also known composite material used to absorb oil containing graphite, carbon black, synthetic fibers and rubber powder (EN, 2108147, 1998).

However, these materials have a low conductive characteristics.

Known composite material having a high electrical conductivity containing carbon black and graphite in the form of particles with a predominant size of 0.25-of 0.41 μm uniformly dispersed in a polyimide matrix, and the material can be made in the form of a flexible film (ER, 0413289, 1991).

The material has a resistivity of 11010Ohm/cm2and volume of 0.33-2,5106OSM.

The closest in technical essence and the achieved result is a composition for obtaining a carbon-containing composition is thermoplastic urethane), polyolefin resin, antimony trioxide, aluminum oxide, cranioleuca and gaidouronisi solvent (SU, 1113391, 1984).

The disadvantage is obtained from the known composition of the material is the instability of its properties, especially when changing the operating voltage.

The present invention is to provide a composition for obtaining a carbon-containing material with operational reliability, temperature stability on electronography surface and preserves the basic geometrical and physico-chemical characteristics regardless of operating voltage.

The problem is solved by the described composition to obtain a carbon-containing composite material containing the following components, wt. including:

Graphite - 100-500

Carbon - 35-50

Antimony trioxide - 30-40

Chloroparaffin - 15-20

Phenol-formaldehyde resin - 50-70

Peroxide Dicumyl - 0,3-1,0

Polyurethane rubber is 100

Solvent - 100-150

Preferably the solvent to use the ethyl ester of acetic acid.

When carrying out the invention have been used commercially available substances on the basis of the polymer material according to the invention was prepared as follows. Ball mill load consistently 100 m H. polyurethane rubber, 100 m including graphite, 35 m H. carbon technical element, 15 m CH chloroparaffin, 30 m H. trioxide antimony, 80-100 m H. ethyl ester of acetic acid. Components are mixed with a mechanical stirrer for 15 to 20 hours to obtain a homogeneous mass. After stirring the mixture discharged from the ball mill to a reactor equipped with a mixer. Then the reactor add 20 m H. ethyl ester acetic acid, 50 m H. powdered phenol-formaldehyde resin and 0.3 m H. peroxide of Dicumyl. Stirred reactor 30-40 minutes to dissolve the phenol-formaldehyde resin. Received comprobadas polymeric material is applied by method of irrigation on moving polymeric substrate type Dacron at 80-100oC and utverjdayut in the process of manufacturing products for 10-15 min at (1505)oC.

Examples of other specific compounds are shown in table 1, and some operational characteristics of conductive materials obtained from different formulations, including formulations, shown as a comparative, are shown in table 2.

It should be noted that the carbon-containing composite material,(size) and physico-chemical characteristics, such as strength and constancy of chemical composition, regardless of the applied voltage in the range 12 to 220 C.

1. Composition for obtaining a carbon-containing composite material having electrical conductivity, containing carbon black, rubber, polyurethane, antimony trioxide, a polymer resin, a solvent, characterized in that the polymer resin it contains phenol-formaldehyde resin and optionally graphite, chloroparaffin and peroxide Dicumyl in the following ratio, wt.h.:

Graphite - 100-500

Carbon - 35-50

Antimony trioxide - 30-40

Chloroparaffin - 15-20

The phenol-formaldehyde resin - 50-70

Peroxide Dicumyl - 0,3-1,0

Polyurethane rubber is 100

Solvent - 100-150

2. Composition under item 1, characterized in that the solvent it contains ethyl ester of acetic acid.

 

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1 ex

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2 tbl, 1 ex

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11 cl, 1 dwg, 4 ex

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