CN104497670A - Acetylene black-added conducting paint material - Google Patents

Abstract

The invention discloses an acetylene black-added conducting paint material. A preparation method of the material comprises the following steps: adding acetylene black to paint, and ultrasonically oscillating under a normal-temperature sealed condition. Since the acetylene black is more developed in secondary structure compared with carbon black, the prepared conducting paint is good in conducting performance.

Description

A kind of interpolation acetylene black electric conduction paint material

Technical field

The present invention relates to a kind of electro-conductive material, particularly one paint electro-conductive material and preparation method thereof, belongs to chemical field.

Background technology

Along with increasing sharply of various commercialization and domestic electronic appliances quantity, Electromagnetic Interference (EMI) has become a kind of new social effects of pollution.At present some economically developed countries and relevant international organization have promulgated the regulation of shielding EMI in the world, and in recent years, computer and Computer Communication Networks almost enter each field, and the consequent needs solution electromagnetic radiation from computer problem.Computer Electromagnetic Radiation is leaked in two ways, i.e. leakage and radiation leakage.For the former, various outlet line coated with conductive is painted, can the leakage of counterchecking electromagnetic wave; For the latter, spray machine room inwall by electroconductive paints and computer case is shielded, the radiation leakage of electromagnetism can be avoided.Electroconductive paints is except except the application in antistatic, EMI shielding etc., and the optics that electroconductive paints is excellent and chemical property, make it in a series of high-tech area, as the aspect such as molecular circuit, electron membrane all has wide market outlook.

Electroconductive paints tempo is abroad very fast, enter practical stage, and the research and development of China in electroconductive paints is started late.Within 1984, electroconductive paints research is tackled key problems as key scientific and technological projects by China, and applies at electron trade, coal industry.But because also there is a big difference compared with abroad in the kind of product, performance and industrialization, mainly go back dependence on import.And developing rapidly in recent years along with China's electronic industry, very urgent to the demand of anti-electrostatic, elimination electrostatic product, also requirement electroconductive paints replaces part metals goods to carry out electromagnetic wave shielding, and this research and development being cut to electroconductive paints brings sound social environment.

In general, more high better to the shielding properties of electromagnetic shielding material, but, see through threshold values by the conductor of filled-in composite to learn, the loading level that one-dimensional electric particle is formed needed for conductive effect is often comparatively large, and massfraction generally reaches about 60%-80%, when so huge incorporation, paint class material then as easy as rolling off a log be full of cracks goes bad, and work-ing life is shorter than common paint greatly.Electro-conductive fiber is added in paint, electroconductive paints can be prepared, electro-conductive fiber content is higher, the electric conductivity of electroconductive paints is better, but during the too high levels worked as, electroconductive paints cost is high and the work-ing life of film forming is short, and in order to overcome this problem, the present invention prepares a kind of excellent electroconductive paints by adding appropriate acetylene black in paint.Acetylene black is decomposed the acetylene of the refining purity more than 99% obtained by manufacture gas when calcium carbide route or petroleum naphtha (raw gasline) pyrolysis, the carbon black obtained after continuous pyrolysis.Its its crystallization and secondary structure compared with furnace treated black is more flourishing, therefore electroconductibility is also more excellent, has joined wherein, can fully be blended in the middle of paint, the electric conduction paint stable performance of preparing.

Summary of the invention

The object of this invention is to provide a kind of interpolation acetylene black electric conduction paint material, the preparation method of this material carries out as follows:

(1) appropriate acrylic resin, vinylbenzene and acetaldehyde are put in a container successively, and ceaselessly stir;

(2) in above-mentioned solution, add polyethylene wax powder, make it mix elementary paint mixture, for subsequent use;

(3) get appropriate acetylene black, levigate further with grinding pot;

(4) in preliminary mixture, add quality for the acetylene black powder described in 15-30%;

(5), under normal temperature air tight condition, sonic oscillation 1-2h, obtains electric conduction paint material.

Preferentially, the contained mass ratio of described elementary paint component of mixture is: acrylic resin (40-50%), vinylbenzene (20-40%), acetaldehyde (20-40%) and polyethylene wax powder (5-10%).

The present invention has following advantages and characteristic:

(1) paint stabilization can be good;

(2) conductivity is strong;

(3) technique is simple, with low cost.

Embodiment

Embodiment one:

Get 40g acrylic resin, 20g vinylbenzene and 35g acetaldehyde to put into successively in a container, ceaselessly stir; Add polyethylene wax powder 5g again after stirring, make it mix for subsequent use; Separately get acetylene black 15g, with levigate in grinding pot, after join in preliminary mixture, under normal temperature air tight condition, sonic oscillation 1h, can obtain a kind of electric conduction paint material.

Embodiment two:

Get 400g acrylic resin, 200g vinylbenzene and 350g acetaldehyde to put into successively in a container, ceaselessly stir; Add polyethylene wax powder 50g again after stirring, make it mix for subsequent use; Separately get acetylene black 150g, with levigate in grinding pot, after join in preliminary mixture, under normal temperature air tight condition, sonic oscillation 1h, can obtain a kind of electric conduction paint material.

Embodiment three:

Get 4000g acrylic resin, 2000g vinylbenzene and 3500g acetaldehyde to put into successively in a container, ceaselessly stir; Add polyethylene wax powder 500g again after stirring, make it mix for subsequent use; Separately get acetylene black 2000g, with levigate in grinding pot, after join in preliminary mixture, under normal temperature air tight condition, sonic oscillation 1.5h, can obtain a kind of electric conduction paint material.

Claims (2)

1. add a preparation method for acetylene black electric conduction paint material, it is characterized in that the method comprises the steps:

(1) appropriate acrylic resin, vinylbenzene and acetaldehyde are put in a container successively, and ceaselessly stir;

(2) in above-mentioned solution, add polyethylene wax powder, make it mix, obtain elementary paint mixture;

(3) get appropriate acetylene black, levigate further with grinding pot;

(4) in preliminary mixture, add quality for the acetylene black powder described in 15-30%;

(5), under normal temperature air tight condition, sonic oscillation 1-2h, obtains electric conduction paint material.

2. a kind of preparation method adding acetylene black electric conduction paint material according to claim 1, it is characterized in that, contained by described elementary paint mixture, mass ratio is: acrylic resin (40-50%), vinylbenzene (20-40%), acetaldehyde (20-40%) and polyethylene wax powder (5-10%).