SU975652A1 - Raw mix for making acid-resistant composition - Google Patents

Description

The invention relates to building materials, namely, silicate acid-resistant solutions and mastics, and can be used in the construction of protective coatings for floors / building structures, equipment, tanks, baths and other structures subjected to the action of acids and their solutions, except fluorinated.

In addition, the proposed composition can be used for the protection of building structures and facilities operating in conditions of elevated temperatures up to 800 C.

The known composition of acid-resistant solution, including liquid glass, sodium silicofluoride and inert aggregate 13.

However, with long-term effects of water and highly dilute acid solutions, such a composition significantly reduces its mechanical strength, the adhesion to the piece material 1m, becomes permeable to acid solutions.

Closest to the invention in its technical essence and the effect achieved is an acid-resistant composition comprising a liquid

glass, sodium silicofluoride, organic additive and aggregate 2}. However, the known material resistant to the effects of solutions of acids of various concentrations and acid salts, has insufficient mechanical strength and water resistance,

The aim of the invention is to increase the mechanical strength and water resistance of the composition.

This goal is achieved by the fact that the raw material mixture for the manufacture of an acid-resistant composition, including liquid glass, sodium silicate, a filler and an organic additive, additionally contains nepheline flame retardant in the following ratio of components, wt.%:

20

Liquid glass 22.0-28.0 Silicon fluoride sodium0, 22-2.8 Organic additive0, 22-1.1

25 Nepheline flame retardant1,1-3,36 Filler Else Liquid glass - an aqueous solution of water-soluble sodium silicate 30 or potassium with a ratio of silica to an alkali metal oxide (S i O.:, S 02: K2.0) within approximately 2.50-3.00 with a specific weight of approximately 1.35-1I42 is used in an amount that ensures the workability of the mixture in the accepted method of production, within 22-28% of the total mass of acid-resistant material. As a curing initiator for curing acid-resistant material is applied salt neftoristovodorodnoy acid, sodium silicofluoride with grain size 0.15 mm IU it in an amount of 0,22-2,8% by weight of the total composition, etc. In order to increase mechanical NOSTA water resistance and acid-resistant material in the second composition additionally introduced nepheline retardant. Nepheline fire retardant in the form of a fine powder with a residue on a 5 µm sieve of not more than 5% in an amount that provides the increased mechanical strength increased mechanical strength, namely in the range of 1.1-3.36% of the total weight of the composition. The organic additive in the amount of 0.22-1.1% of the total mass of the material is selected from the group that includes f.ofuryl alcohol, furfural and furfural-acetone monomer. The last of these additives is the product of the interaction of furfural and acetone. The listed organic additives can be taken individually or mixed with oneself, back or all together. As an inert filling material, quartz sand, crushed rocks with a high content of silica, for example, diamonds, can be used to create the mineral core of the trapezoidal material. andesite, basalt and other acid resistant rocks. To prepare the putty, preference should be given to inert aggregate in the form of diabase powder with a grain size of up to 0.15 mm and with a grain content of less than 75 mm of at least 60% by weight. In the preparation of the solution, it is advisable to use as an inert aggregate a dry mixture consisting of quartz sand that does not contain clay and lime impurities, a grain size of not more than 1.2 mm and a powder from diabase or andesite. The proposed material is made by mixing the dosed components in a mortar mixer. Initially, inert blender and hardening initiators are stirred for 3-4 minutes in an amount necessary for one month. Then, pre-mixed liquid glass with an organic additive is added to the dry mixture, after which stirring is continued for another 4-5 minutes until the mixture is fully homogeneous, Example 1 similar glass a.v., 1.38 g / cm, ac.% 22.0 sodium refluoride, wt.%, 0.22 epheline polystyrene, ae.% 1D URFURYL PIER, wt.% - 0.22 hard sand, ae,% 38.23 ibasic defect, May,% 38.23 Example 2 Liquid glass beats ,at. 1.38 g / cm, May,% 23.0 Silicon-sodium fluoride, wt.% 1.15 Nepheline flame retardant, wt.% 2.3 Furfuryl alcohol, wt.% 0.69 Quartz sand,, wt.% 36.43 Diabase powder, wt.% 36.43. Example 3 Liquid glass beats, c. 1.38 g / cm, May,% 28.0 Silica, sodium fluoride, wt.% 2.8 Nepheline flame retardant, wt.% 3.36 Furfuryl alcohol, May,% 1f 1 Diabase powder, wt.% 32.22 Quartz sand, wt.% 32.52 Example 4 Liquid glass j beats, b, 1.38 g / cm, wt,% 26.0 Cream-fluorine sodium, May,% 1.3 Nephilic flame retardant, wt.% 2.60 Furfuryl alcohol , wt.% 0.78 Diabase flour, wt.% 69.32 Example 5 Liquid glass b.w., 1.38 g / cm, wt.% 27.0

Fluorosilicate

sodium, May.%

Nepheline

fire retardant, mao,%

Furfurip alcohol

wt%

Andesite Powder

wt%

PRI me R

Liquid glass

beats, in, 1.38 g / cm,

wt.%

Fluorosilicate

sodium, wt.%

Nepheline

fire retardant, wt.%

Furfural, wt.%

Quartz sand,

wt.%

Diabase powder

wt.%

Example

Liquid glass

ud 1.38 g / cm

wt.%

Silicon fluoride sodium, May.% Nepheline anti-mass,%,

Furfurolacetone

0,69

monomer, wt.%

Quartz sand, 36.43. May.%

Diabase powder,

wt.% 36,43

In the first three examples, compositions of an acid-resistant solution with the addition of nepheline flame retardant are given in the amount of 1.1, 2.3 and 3.36% of the total

0 weight, in examples 4 and 5, the compositions of acid-resistant putties on diabase and andesitic fillers with nepheline additive in the amount of 2.6 and 2.7% of the total weight {in examples 5-5, furfuryl alcohol was used), In Examples 6 and 7, the compositions of an acid-resistant solution with the addition of nepheline flame retardant in the amount of 2.3% of the total mass and an organic additive in the form of furfural and furfurol acetone monomer are presented. Prepared samples after 30 days of storage in air are tested for compression and bending. For water resistance tests, the samples were held in water for 90 days. Results

0

are shown in the table.

Claims (1)

FurFurilosaline alcohol Furfuryl alcohol furfural furfurol-acetone monomer. Diabase powder and quartz sand Diabase powder Andesitic powder Diabase powder, quartz sand The economic effect, for example, in floors, calculated by reduced costs due to an increase in the quality of the floors, made using the proposed blend, is 65 rubles compared to the known mixture. for every 100 m floor. The proposed material can be used on objects that perform anticorrosion coatings of acid resistant material. Formula of the Invention A raw material mixture for the manufacture of an acid-resistant composition, including liquid glass, sodium silicofluoride, a filler, and an organic additive, which is aptly so that, in order to increase mechanical strength and water resistance, it also contains nepheline fire retardant in the following ratios of components ,%: Liquid glass 22.0-28.0 Silicon fluoride sodium 0.22-2.8 Organic additive 0.22-1.1 Non-nephilic flame retardant1.1-3.36 Filler Other Sources of information taken into account during the examination 1.Subbotki MI ,, Kuritsyna YS, Acid-resistant concretes and mortars based on liquid glass, M., Publishing House Building, 1967, p. 93-96. 2, USSR Author's Certificate 299150, cl. From 04 To 19/04, 1969.