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INVENTION
Patent of the Russian Federation RU2152416
A METHOD FOR PRODUCING AN ADHESIVE COMPOSITION USED FOR GLOSSING
BUILDING MATERIALS
The name of the inventor: Poluboyarov VA; Cherepanov A.N .; Ushakova EP; Korotaeva ZA; Cherepanov K.A.
The name of the patent holder: Institute of Solid State Chemistry and Mechanization of the SB RAS; Institute of Theoretical and Applied Mechanics SB RAS
Address for correspondence: 630128, Novosibirsk, ul. Kutateladze 18, IHTTM SB RAS, Ushakova EP
Date of commencement of the patent: 1998.11.26
The invention makes it possible to obtain an adhesive composition used in the construction industry for bonding building materials. The method comprises mixing a sodium liquid glass or a silicate bond adhesive with an active filler, which is a decathionized or calcium-containing zeolite with a particle size of not more than 100 μm. A certain ratio of components makes it possible to increase the strength of glue joints while maintaining their water resistance.
DESCRIPTION OF THE INVENTION
The invention relates to methods for producing adhesive compositions used for gluing building materials.
The closest technical solution chosen for the prototype is the method for producing an adhesive composition for gluing building materials, comprising mixing liquid sodium glass with the clay diatomite of the Vorotan deposit, ground in a ball mill to a specific surface equal to 2400 cm 3 / g ( Authorship of the USSR N 1728277, C 09 J 1/02, published by BI N 15, April 23, 1992). /1/
The disadvantage of the known technical solution is the insufficient strength of the adhesive seams and rigid binding to the raw material, the diatomite of the Vorotan deposit, which complicates the ability to approximate the production of this adhesive composition to the consumer.
The task solved by the claimed technical solution is to increase the strength of the adhesive joints while maintaining their water resistance by using more accessible raw materials.
This object is achieved due to the use of a decathionized or calcium-containing zeolite having a particle size of not more than 100 μm in the following component ratio, in the claimed process, comprising mixing sodium liquid glass with an active vehicle, as active filler. % :
Sodium liquid glass or silicate adhesive - 60-90
Calcium-containing zeolite - Other
As decathionized or calcium-containing zeolite, both natural and synthetic, including HZSM-5 , and calcium-containing natural zeolites of the Heilandite type can be used.
In the case of decathionized zeolites, for example HZSM-5 , there is an exchange reaction: Na + [D. Breck. Zeolite molecular sieves, 1976, Mir, p. 544-604] to form a sol of SiO 2 , which increases the strength of glue compounds. In this case, any other decationized zeolite can be used.
Instead of liquid glass, the silicate adhesive bond obtained from microsilica-containing wastes of ferrosilicon and silicon production was used in the claimed method.
Comparative analysis with the prototype allows us to conclude that the claimed method differs from the known one using a different feedstock, namely a decationized or calcium-containing aluminosilicate zeolite with a particle size of not more than 100 μm, and thus meets the criterion of "novelty".
The set of essential differences allows to solve the set task, that is, to improve the properties of the resulting adhesive composition, and to expand the geography of its implementation through the use of more accessible raw materials, hence, it can be concluded that the claimed technical solution meets the "inventive level" criterion.
CHARACTERISTICS OF INITIAL COMPONENTS
Sodium liquid glass TU 2278-80 for the channel and zeolites, specific gravity 1.2 , modulus 2-2.5 .
Decationized synthetic aluminosilicate zeolite type HZSM-5 .
Ca- containing mineral aluminosilicate zeolite of the Heylandite type having a typical composition of the unit cell Ca 4 [(Al 2 O) 8 (SiO 2 ) 28 ] 24 H 2 O.
Silicate adhesive bonded from silicon-containing wastes of ferrosilicon or silicon production, specific gravity 1.3-1.45 g / cm 3 and silicate module 2.5-3.5 , containing in its composition, according to X-ray diffraction analysis, 25% of SiO2 sol 2 .
The STATEMENT OF THE APPLICATION IS PROVIDED AS FOLLOWS:
Decathionized or calcium-containing zeolite, natural or synthetic, is ground in a ball mill and then screened off particles larger than 100 μm . Then, the resulting powdered zeolite is mixed with a sodium liquid glass or silicate glue-binder in the claimed ratios.
The resulting adhesive composition is applied by brush on both surfaces to be glued, applied one on top of the other and compressed for 3 minutes . Curing of the joint takes place within 15-60 minutes .
The adhesive compound becomes water resistant when heat treated at 200 ° C.
Specific examples of the proposed method, as well as the prototype example and the supernumerary examples, are given in the table.
As can be seen from the table, the declared limits of the components ratio make it possible to obtain the most durable adhesive seams, waterproof at heat treatment at 200 o C.
The glue proved to be excellent, in which instead of sodium liquid glass a silicate adhesive was used, made on the basis of microsilica waste produced by ferrosilicon and silicon, containing up to 25% of the SiO2 sol.
Thus, the claimed process makes it possible to obtain an adhesive composition with good properties from a fairly common and available raw material, for example, such as natural calcium zeolites
CLAIM
-
A method for producing an adhesive composition comprising mixing a liquid sodium glass or a silicate adhesive bond prepared from microsilica waste produced by ferrosilicon or silicon with an active filler, characterized in that the active excipient is a decathionized or calcium-containing zeolite with a particle size of not more than 100 μm at The following ratio of components, wt. % :
Sodium liquid glass or silicate adhesive - 60 - 90
Decathionized or calcium-containing zeolite - Other
The process of claim 1 , wherein the zeolite is a decolonized synthetic aluminosilicate zeolite of the HZSM-5 type .
The process of claim 1 , wherein the zeolite is a calcium-containing natural zeolite-heylandite.
print version
Date of publication 31.10.2006гг
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