SU896040A1 - Binder for construction materials - Google Patents

Description

(S) BENT FOR CONSTRUCTION MATERIALS

The invention relates to construction materials, in particular to the preparation of living materials used in the manufacture of products used in construction. The sulphite-yeast brewing (PRT) and phosphoric acid f 1 J. are known. The disadvantages of the known stranger are the low adhesiveness and, consequently, the low strength of the products obtained on the latter. The closest in technical essence and the achieved result to the invention is the phenol-formaldehyde resin, which contains sulfite-alcohol bard (lignosulfonic acid derivative), boric acid, boric acid, plasticizer (synthetic rubber latex) and water. Products based on the specified one are characterized by good heat resistance. 2 J However, the water resistance of such products is not high enough. The purpose of the invention is to increase the water resistance of the material. The goal is achieved by the fact that, as a building material binder, including a ligno-sulphate-derived, resole phenol-formaldehyde resin and water, contains a sulphite-yeast brewer as a lignosulfonic sulphate and additionally contains an average and (or) acid ammonium salt of an inorganic acid and ethyl silicate sodium polyhydroxy siloxane liquid in the following ratio of components, wt,%: Sulfite yeast mash3.56-7.2 Resol phenol-formaldehyde resin, 0-58.6 medium and (or) acidic mmonium salt of inorganic acid, 0.4-15.0 Sodium ethyl silicate or polyethylsiloxane liquid 0,, 0 Water 20-80 The preparation technology is as follows. Sulfite-yeast brew (DMS), which is an aqueous solution of lignosulfonic acids and (or) their sodium, calcium, mage. ammonium salts, mixed with a water-alcohol solution or an aqueous emulsion silicone water-repellent agent (ethyl silicate sodium-GCG-10 or polyethylsiloxane new liquid-GCG-9), then the resulting mixture is injected with a phenol-formaldehyde resin (phenol-10) -5 12 25 9.7-39 44 52

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Claims (2)

thirty . 71 0. 4 alcohols brand B-TU-05-116-75). After complete dissolution of the components, the resulting composition is combined with a saturated aqueous solution of ammonium salt. The slabs were diluted with water or used in a concentrated form. Samples are made on the basis of a binder, for example, a weight of perlite sand (25 g), which is mixed with a calculated amount of binder (15 by dry residue from the weight of the sand) until the latter is evenly distributed over the sand surface. The mixture prepared in this way is placed in a form with nests of the size of mm and is subjected to heat treatment in a drying cabinet at C for 5 hours. In the table. Figures 1 and 2 present examples of a specific implementation of the proposed binding agent and material properties based on the binding agent proposed and known for a binding agent. Table 1 5 From table. 1 and 2, it follows that articles based on the proposed visitor are characterized by a higher water resistance than articles based on the known visor. Claims of the invention A construction resin containing a lignosulfone derivative, a resol phenol-formaldehyde resin and water, characterized in that, in order to improve the water resistance of the material, it contains a sulphite-yeast mash as a lignosulfone derivative and additionally contains an average and (or acidic ammonium salt of inorganic acid and sodium ethyl silicate or polyethylsiloxane liquid in the following ratio of components, wt.%: Sulfite-yeast mash 3.56-7.21 Resole phenol op «, 0-58,6 maldehyde resin, Medium and / or acid ammonium salt of neo rocanic 0, A-15.0 acid, sodium ethyl ethyl silicate or polyethyl hydroxylox ,, 0 new liquid 20-80 Water Sources of information, which are examined during examination t. USSR author's certificate 68917, class C OA B 29/02, 1977. 2. USSR author's certificate 30084, cl. S O B A / 02, 1972 ootype).