SU1011613A1 - Composition for making rigid mineral wool slabs - Google Patents

Abstract

A COMPOSITION FOR MANUFACTURING .STICK MINERAL TILES, including mineral wool, clay component, water, and additive, which THAT, in order to reduce bulk density and thermal conductivity, it additionally contains asbestos type U1, as a clay component contains asbestos in the form of a 4% stable asangel water suspension, and sodium ethylsiliconate as an additive, in the following ratio of components, wt.%: Mineral wool 25.0-40.0 Askancol in the form of a 4% stable aqueous suspension Ascangel 4, 0-8,0 Voda48,5-65,0 Et sodium silicate 0.5-1.0 Asbestos U1-GO grade 3.0-5.0 9

Description

о оо The invention relates to the industry of building materials, but also to compositions for the manufacture of hard mineral wool boards used for thermal insulation of building structures and structures. The known mass for the manufacture of mineral wool slabs, including wool, pereno-furilovuyu with lu, bentonite clay, ethyl silicate tl. The closest in technical essence and the achieved result to the invention is a composition for the manufacture of hard mineral wool, including, wt.%: Mineral wool 23-30 Water45-58 Refractory clay 10-25 Sodium tripolyphosphate 2-5 Frother 0.8-1.2 - Non-woven slabs of this mixture have a bulk weight of 250,400, flexural strength of 3.0 kg / cm. A disadvantage of lime compositions is their increased bulk density and relatively large thermal conductivity. The purpose of the invention is to reduce the bulk density and thermal conductivity. Delivered to those achieved is that COMPOSE-PNHIA for the manufacture of hard mineral wool slabs, including mineral wool, a clay component, a zod, and an additive, additionally contains asbestos UT grade, as a clay component contains askankol in the form of a 4% stable aqueous suspension. Askangel and sodium ethylsiliconate as an additive with a lean component ratio, wt%: 25.0-40, Lecancol mineral wool in the form of 4% STANT 1 IVOA ROUND suspension of Ascange4, 0-8, O 48.5-65 , Water Ethylsiliconate sodium 0.5-1.0 Asbestos U1 grade, 0 V Mineral wool, made of blast-furnace slag, was used in this composition, which is characterized with the following indicators: bulk weight - 75 kg / m; thermal conductivity 0, 043 W / mK. Lska-ikol - 4% stable asgangel suspension is made as follows: in a propeller mixer (with heating), an aqueous ascangel suspension is prepared with a 20% concentration and extractant:) for 4 hours at 70-80 ° C, During this time, Ascangel (Bentonite montmorillonite clay swells strongly. Then the suspension is diluted with hot water (- (; 80 -) / to a concentration of 4% and a 10% solution of chemical water is added to it at the rate of 5.5 % bitch soda in relation to the dry asgangel, brought to a boil at, hold for 25-30 minutes. a stable sodium montmorillonite colloid is formed which does not stand up, is not filtered and has a similarity to starch paste. Production of hard mineral wool plates from the indicated composition is carried out using a wet method. concentrations, asbestos, U1 grade, sodium ethylosiliconate and nocj; e stirring, mineral wool is poured with water, stirred for 3-5 minutes. after which the production of a homogeneous mixture is formed using a vacuum press in a mold, and then immersed in the trolleys and dried in a D tunnel dryer at 110-150 ° C. The proposed technology made the product. The compositions and properties of the obtained products are shown in the table.

40

h:

25

Known

0.065 35

.1,5

0.060 25

: ..., 5 0.055 15

Oh 5

3.0 With an increase in the content of raw materials of above specified limits, the resulting material is characterized by an increased mechanical strength of 4.0 kg / cm, but also has an increased bulk weight of 420 kg / m. and thermal conductivity of 0.075 W / mK. At a decrease in the content of components below the specified limits, the resulting material characterizes a bulk weight of 150 kg / mg and, accordingly, low mechanical strength 1, 5 kg / cm Introduction to the composition of the mass of dissolved asbestos U1 grade in a composition with mineral wool and Water suspension of Asgangel causes an increase in physico-mechanical and thermal properties of mineral wool plates - a decrease in bulk density, an increase in the upper limit of strength. The introduction of sodium ethyl silicate lowers water absorption and the product becomes hydrophobic. The use of the proposed composition in construction saves basic materials, reduces the mass of the structure, reduces heat loss in the environment. The expected technical and economic effect is also due to the reduction in the cost of hard mineral wool slabs by simplifying technology and using non-deficient raw materials.

Claims (1)

COMPOSITION FOR MANUFACTURING RIGID MINERAL ORBIT BOARDS, including mineral wool, clay component, water and additive, based on the fact that, in order to reduce bulk mass and thermal conductivity, it additionally contains asbestos of UT grade, in as a clay component contains ascankol in the form of a 4% stable aqueous suspension of ascangel, and as an additive - sodium ethylsiliconate, in the following ratio, wt.%: Mineral wool 25.0-40.0 Askankol in the form of 4% sustainable aqueous suspension ascangel 4.0-8.0 Water 48.5-65.0 Ethyl Siliconate Sodium 0.5-1.0 Asbestos of the U1st grade 3.0-5.0 3 SU _m . 1011613