SU960212A1 - Composition for producing electrically conducting coatings - Google Patents

Description

(54) COMPOSITION FOR ELECTRIC PRINCIPLES

one

The use refers to paint-and-lacquer polymer compositions, in particular based on polymethacrylates, for electrically conductive coatings.

Known paint and varnish compositions for electrettopic pshh coatings containing various thermoplastic polymers and metal dispersed fillers ij.

However, their manufacture is associated with techno logical difficulties and coatings (they have relatively low electrical conductivity and low viability.

The closest to izofeteniya technical essence and the achieved result is the composition of electrically conductive coatings (enamel AC-588),

: - ...-. : t; -. . ., I

comprising methacrylic acid amide copolymer with methacrylic acid butyl ester, butyl methacrylate copolymer with methacrylic acid, powdered nickel and organic solvents G 2 3. COATINGS

 On the basis of a known composition, when necessary, they require additional time i drying in air (48 h) and do not have a sufficiently high electric / nost.

The goal of isofethen is to reduce the drying time and increase the conductivity of the coating.

The delivered grandfather is achieved by the fact that the composition for electrically conductive not qpbihy, which includes copolymer of methacrylic acid amide with methacrylic acid butyl ester, copolymer of butyl methacrylate with megacrylic acid, powdered nvkel and organic solvent, as an organic solvent, as the same solvent, as the same-type solvent, as the same-type solvent, as the same-type solvent, as the same-type solvent, as the same-type solvent, as the sample solvent, as the same-type solvent, as the sample solvent, as the same-type solvent, as the sample solvent, as the same-type solvent, as the sample solvent, as the same-type solvent, as the sample solvent, as the reference solvent, as the sample solvent, as the solvent, it is used as an organic solvent; and tolu20 1la and additionally - go through. dimethylamine polycondensation with 1,4-dichloro-2 butene, with the following ratio of components, wt.h:

Methacrylic acid amide copolymer with methacrylic acid butyl ester

Butyl methacrylate copolymer with methacrylic acid

Powdered nickel

 Dimethylamine polycondensation product with 1,4-dichloro-2-6-utene Ethyl alcohol Ethyl acetate Acetone

 Toluene

As a copolymer of me acid with butyl ester of lovoic acid, use cm TUv-01-370-69, and, as a quality measure of butyl methacrylate with meth acid, is BMK-5 resin according to -432-69.

The product of polycondensation with dimethyls with 1,4-dichloro-2-butene is an aliphatic polycationide containing ammonium nitrogen and | , J are multiple bonds in the polymer. Specific viscosity at 20 ° C in methanol equals O, O8-0.11, softening temperature 210-25 Cp.

As powdered nickel, carbonyl, electrolytic (GOST 9722-79) or silver (TU 48-07-104-71) nickel is used.

The composition is prepared as follows.

The required amount of resin AC, ethyl acetate is loaded into the mixer and stirred until the mixture is completely dissolved, after which powdered nickel is loaded and mixing is carried out until a homogeneous suspension is obtained (component A). At the same time, ethyl alcohol and dimethylamine polycondensation with 1,4-dichloro-2-butene are loaded into the second mixer, mixed until the latter is completely dissolved, and the required amount of BMK-5 resin in ethyl acetate is added. The mixture is stirred until homogeneous and diluted with a mixture of ethyl acetate, acetone and toluene (component B). Component A is then mixed with component B until a homogeneous suspension is obtained.

The coating is applied with a spray or a brush in two layers.

Table 1 shows the contents of the components in the known, suggested and control compositions.

The properties of the coatings are given in table. 2

Coatings based on the proposed composition are obtained with a significantly shorter drying time and better electrical conductivity, which makes it possible to use them, for example, for shielding devices. Table

10A

100 100 100 100 10О 52

66 1OO 52 25 2OO

726

666

543 300 800

7OO,

32 143 22 541О 2ОО

66

66

495 Film hardness on a maternity instrument M-3, not less than 0.4 Adhesion (according to TU6 10-93 6-7О) Film resistance to cyclic temperature effects (40-60 С) according to TU6-1О-936-7О Electrical resistance, Ohm / cm2ОУ Duration of drying, h48

Claims (2)

1. Gul V. Ye. To others. Electrically conductive materials M. Chem., 1968 with. 179-197. 2.Emal AS-588 conductor conductive. TU6-10-936-70 (prototype). ;