SU579254A1 - Polymineral mix for finish coatings - Google Patents

Description

I

This invention relates to polymeric mineral blends for finishing coatings.

A polymer-mineral mixture is known, including mineral and organic binder and aggregate 5.

A polymer-mineral blend for finishing coatings is also known, including white Portland cement, polymeric binder, hydrated lime, white quartz sand, titanium dioxide and the addition of silicone compound t 2 1 ..

The disadvantages of the known mixtures are low frost resistance and durability of coatings in a water-saturated state, and high polymer intensity.

Closest to the invention, Vets is a second polymer-mineral mixture.

The purpose of the invention is to increase the frost resistance, the strength of coatings in a water-saturated state and the reduction of poly-intensity.

This is achieved by the fact that a polymer-mineral mixture for finishing coatings, including Portland white cement, polymer bond, lime hydrate, white silica sand, titanium dioxide and the addition of organosilicon compound, contains an aqueous emulsion of polyethylsiloxane as the organosilicon compound in the following ratio, wt.%:

Portland cement White 16.8-16.0 Polymer binder 4.5-5.1 Lime gilrate 6.0-6.3 Titanium dioxide1.0-1.49

Aqueous emulsion of polyethylsiloxane 0.1-0.11. Quartz white sand Else. As PCO.: For example, a pivivinylaietat yuk1 plasticized dispersion is used, for example.

Vodnchyu emu. polyethylsilox: a use a 30% aiiHvt concentrate. Examples of mixtures, wt.%:

Porland cement white

Polymeric binder-dispersion polyvinyl acetate plasticized

Lime Hydrate Titanium Dioxide

Polyethylene hydrosiloxane water emulsion

White quartz sand

The mixture is prepared in standard mortar mixers by mixing, in the indicated proportions, dry and liquid components with water to obtain a homogeneous mass with a mobility of 9-10 cm along the cone of StroyCNIL. The shelf life of the mixture is 3-4 hours.

The mixture to be applied to the surface to be finished (concrete, brick, wood, plaster, slate, slate) is applied mechanically, using the nabrayeg method, the color of the coating is white.

Depending on the requirements for color, coating coating, coloring of any kind of indicators

2

Have

15.9

15.8

5.0

5.1 6.2

6.0

1.0 1.2

0.10

Oh, 10 72.0 71.6

These are obtained by introducing into the mixture atmospheric alkoxid resistant mineral and organic pigments or through the use of colored portland cement.

The test results of the physicomechanical properties of the compositions at the age of 28 days are presented in a comparative table.

In comparison with the known finishes, the resulting coatings have a frost resistance and durability in a water-saturated state by 1.52, 0 times higher, and a polymer intensity - 35% lower.

Known polymer-mineral

mixture (prototype) 3

Compressive strength in water condition, kgf / cm

Compressive strength in air-dry condition, kgf / cm

h

Bending strength, kgf / cm Adhesion to concrete, kgf / cm Water absorption,% Frost resistance, cycle

Restoration of the strength properties of water-saturated strains after drying to constant weight at temperature. 50-60 ° C.%

Claims (2)

1. Author's certificate of the USSR (375269, class C 04 B 25/02, 1970. 2. Authors certificate of the USSR And 391097, cl. From 04 To 25/02, 1971.