SU773032A1

SU773032A1 - Method of painting silicate articles

Info

Publication number: SU773032A1
Application number: SU792758651A
Authority: SU
Inventors: Нина Васильевна Архинчеева; Константин Максимович Марактаев; Тамара Александровна Бадеева; Николай Владимирович Рудаков; Анатолий Сергеевич Шумилин
Original assignee: Восточно-Сибирский технологический институт
Priority date: 1979-04-26
Filing date: 1979-04-26
Publication date: 1980-10-23

Description

Изобретение относитс к обработке искусственных камней и керамических изделий и може быть использовано дл декоративной отделки силикатного кирпича и бетона после пропаривани или автоклавировани . Известен способ окраски силикатных издели заключающийс в нанесении на их поверхность краски, состо щей из жидкого стекла, тонкомо лотого наполнител и пигмента, и последующей сушки, согласно которому нанос т краску, состо щую из жидкого стекла и смеси фосфатов, буры; борной кислоты И ОКИСЛОВ металлов и сушат при 200-250 С 1. Недостатки этого способа - сушка при высокой температуре и многокомпо 1ентность состава наполнител . Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс способ окраски силикатнг,1Х изделий ,иутсм нанесени на их поверхность краски, содержащей жидкое стекло и тонкомолотый наполнитель на основе необожженного перлита и термообработки. Согласно этому способу краску готов т из 30-50% жидкого стекла плотностью 1,3-1,36 с модулем 2,5-3,5 н 50-70% тонкомолотого 1еобожженного перлита с крас щим пигментом в количестве 1-5% (сверх 100%) и нанос т на поверхность издели с температурой 15-25°С, выдерЖ11вают сутки и подвергают термообработке при 150160°С в течение 3-,4 ч 2. Недостатками этого способа вл ютс длительность сушки (более суток) и низка степень белизны окраски. Цель изобретени - интенсификатщ процесса и повышение степени белизны покрыти . Достигаетс это тем, что согласно способу окраски силикатных изделий путем нанесени на их поверхность краски, содержащей жидкое л стекло и тонкомолотый наполнитель, и термообработки , к-раску нанос т на поверхность изделий , нагретую до 40-45°С, причем в качествеThe invention relates to the processing of artificial stones and ceramic products and can be used for the decorative finishing of silicate bricks and concrete after steaming or autoclaving. A known method of dyeing silicate products consists in applying a paint on their surface, consisting of liquid glass, fine-grained filler and pigment, and subsequent drying, according to which paint is applied, consisting of liquid glass and a mixture of phosphates, borax; boric acid and metal oxides and dried at 200–250 ° C. 1. The disadvantages of this method are high temperature drying and a multiple composition of the filler composition. The closest to the proposed technical essence and the achieved result is a method of painting silicate, 1X products, and means of applying paint on their surface containing liquid glass and fine ground filler based on unfired perlite and heat treatment. According to this method, the paint is prepared from 30-50% of liquid glass with a density of 1.3-1.36 with a module of 2.5-3.5 N 50-70% of fine ground calcined perlite with a dye pigment in an amount of 1-5% (above 100%) and applied to the surface of the product with a temperature of 15-25 ° C, they are kept for 24 hours and subjected to heat treatment at 150160 ° C for 3, 4 hours. coloring. The purpose of the invention is to intensify the process and increase the degree of whiteness of the coating. This is achieved by the fact that, according to the method of dyeing silicate products by applying a paint containing liquid glass and finely ground filler to their surface and heat treating, K-decomposition is applied to the surface of products heated to 40-45 ° C, and as

Claims

The formula of the invention of the tunic is white dolomite and expanded. The method of painting silicate products by perlite, which in various proportions of applying paint to their surface containing co-milled in a ball mill to a specific surface of 10,000 cm ² / g. The optimal composition of the filler and the drying mode are pre-selected / on 2x2x2 cm cubed samples. For this, plastic molding samples are prepared from a mixture of filler and liquid glass with a modulus of 3.3 and a density of 1.34 g / cm ³ , with various modes and tested for compressive strength and water resistance. Water resistance is determined after the samples are in water for two days.

Under the same drying conditions, based on ⁵⁰ perlite rocks, the samples show low strength and low water resistance. Preliminary exposure of the products during the day in air increases the water resistance (at optimum compositions Cr _azm . = 0.9-G, 0). Drying VNIIPI Order 7422/29 liquid glass and finely ground heat treatment fillers, characterized in that, in order to intensify the process and increase the degree of whiteness of the coating, the paint is applied to the surface of the products, heated to 40-45 ° C, and is introduced as a finely ground filler into the paint a mixture containing, wt.%:

Dolomite 40-60

Expanded perlite 40-60, and heat treatment is carried out at 100-120 ° C for 1.5-2 hours