SU684050A1 - Binder of decorative enamel for stencil printing - Google Patents

Description

one

The invention relates to the decoration of glass-maklevyh coatings by screen printing,

Decorative glass enamels for screen printing consist of a filler and a binder. As a rule, ceramic paints or glass powders with pigments serve as a filler.

A decorative enamel binder is known, including, by weight,%: kerosene 55, rosin 28, castor oil 17 ij.

However, the binder does not provide a pattern of the required quality,

To the proposed binder, the most closely related binder of decorative enamel for screen printing, including weight, h: kerosene 1,4; natural drying oil 1,6; liquid paraffin 0.9 2.

The disadvantage of such a binder is its limited applicability — at low enamel burning temperatures (STO-SeO C) as a result of incomplete thermal destruction of the binder.

The color of the decorative enamel changes dramatically, which degrades the quality of the pattern. This eliminates the possibility of using this binder of decorative enamel on products with a low heat treatment temperature, for example, from aluminum and its alloys, glass, etc.

The aim of the invention is to create a binder that provides a high-quality pattern on the products after firing enamel at 570-58 ° C,

The goal is achieved by the fact that the binder of decorative enamel, a screen printing agent, including kerosene and vaseline oil, additionally contains turpentine oil, cyclohexamethanol and methyl methyl silicate in the following ratio of components, weight, hours:

Kerosene5.0-1O, 0

Turpentine oil 0,, 5 Vaseline oil 1, O-2.5 Shkloheksanol86,0-91,0

Metasilicate sodium 0, 5-2.0

The compositions of —Hz of the proposed binder are given in Table. one.

Table

Comparative indicators of the quality of the resulting pattern at a firing temperature of 57 ° -580 ° C, depending on the composition of the binder of the decorative enamel, lead & money in the table. 2. The ratio of filler: binder is 6О-70: ЗО-40. The quality of the pattern (contour clarity, continuity) is characterized by the printing properties of the decorative enamel, in particular

14

L21

15

I

18

Sh

22

Famous

From tab. 2 - it can be seen / that the proposed binder ensures obtaining a high-quality pattern at LOW. X temperatures (570-580 C) of firing of decorative enamel.

Table 2

Black coating, in continuous injections, not melted

Contour drawing

blurred, pattern melted discontinuous

Contour drawing

clear, melted and continuous pattern

The contour of the drawing is rae myt, the drawing is melted down

Claims (2)

Invention Formula Decorative enamel binder for screen printing, including kerosene and liquid paraffin, the viscosity of the binder, determined on the instrument B 3-4 after the time of expiration of a certain volume of liquid, and the color of the pattern after firing, About reproduction The colors of firing are judged by the diffuse reflection coefficient (DLC) measured on the whitenometer of the construction of the Novocherkassk Polytechnic Institute. 5 6840 sh e so that, in order to obtain a high-quality pattern on the products after firing enamel at 570-580 ° C, the binder further contains turpentine oil, cyclohexanol and sodium metasilicate in the following ratio of components, weight. h: Kerosene 5.0-10-10 Turpentine oil 0.5-1.5 Vaseline oil 1.0-2.510 Cyclohexanol 86.0-91.0 Sodium metasilicate "0.5-2.0 506 Sources of information received into account during the examination 1. O. Goncharov, et al. Study of the mechanized process of decorating enameled products - Proceedings of Novocherkassk Polytechnic th Institute, 1969, t. 198, s, 125. 2. Skvortsov, E. A., et al. Dvkorirov, “by the silk-screening method on a pop-up machine — Glass and Ceramics, 1964, No. 8, p. 38