SU1707044A1 - Adhesive for sticking coverings to walls and floors - Google Patents

Abstract

The invention relates to construction, in particular, to a construction composition for gluing floor and wall coverings, and can be used in the manufacture of finishing work for gluing PVC linings to concrete and asbestos cement surfaces of floors and walls. The invention makes it possible to reduce the viscosity of the composition, increase its stability over time, increase the drying time and reduce consumption due to that. that the composition is filled as .-- contains a filler selected from the group. containing kaolin, chalk, their mixture, as a thickener - a mixture of water, alkali and sodium carboxymethylcellulose with a mass ratio of 38.7: 1.0: 2.1, respectively1 and additionally a modifying agent in the form of a mixture of composition, May. %: rosin 14, xylene 4, white spirit 2, methyl phenylsiloxane 1, having a viscosity of 17.5 Mae. The composition according to the invention has the following composition, wt%: divinyl styrene latex 40-50, filler 5-8, thickener 30-40, modifying agent 5-8, water the rest. 4 tab. And | C

Description

The invention relates to construction, in particular, to a construction composition for gluing floor coverings, and can be used in the manufacture of finishing works for gluing polyvinyl chloride facing materials to concrete and asbestos-cement surfaces of floors and walls.

The closest in technical essence and the obtained result is. Ee mastic, comprising, in wt.%:

Divnilstirol

latex (dry

substance) 36.00-40.00

Kaolin5.00-20.00

Sulphate or

sodium chloride 2.00-5.00

Sludge from the production of mosaic slabs0.84-2.52 Water Else This composition makes it possible to increase the bonding strength of foamed linoleum with a concrete base to 5 kgf / cm and slightly improve the stickiness. The mastic paste of this composition (Latelin glue) is produced by an industrial enterprise, but when using this mastic there are considerable difficulties associated with its high viscosity, low stability of rheological properties and high consumption. Due to the high viscosity, the mastic is very difficult to apply on the substrate in an even layer, which is subsequently negative

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reflected on the strength characteristics of the coating and appearance: bumps and bumps remain. Due to the low stability of the rheological properties, the mastic can practically only be used in a freshly prepared form. During storage, a strong delamination of the composition occurs with the release of water and the formation of agglomerates, which also negatively affects the strength and technological properties of the mastic and is not eliminated with repeated mixing. The disadvantage of this composition is also its high consumption, approximately 700 g per 1 m2. In addition, the mastic has a too short drying time before tacking (4-5 min). This complicates the manufacturing process of the coating device, due to the film quickly forming on the surface of the adhesive layer, it is necessary to glue in small sections. This leads to a significant decrease in productivity. Because of these disadvantages, mastic has a very limited use.

The purpose of the invention is to reduce the viscosity of the composition, increase stability over time, increase drying time and decrease consumption.

This goal is achieved by the fact that a building composition comprising vinylstyrene latex, a filler and water, as a thickener, contains a mixture of water, alkali and sodium salt of carboxymethylcellulose in a weight ratio of 38.7: 1.0: 2.1, respectively, - but the modifying agent in the form of a mixture of composition, wt.h .: rosin 14,0; xi / yul 4.0; white spirit 2.0: methylphenylsiloxane 1.0.

The components of the proposed composition are taken in the following ratio, mass%: v Dia-nyl styrene latex 40-50 Filler 5-8 The specified thickener 30-40 The specified modifying agent 5-8 as the divinyl styrene latex used in the proposed composition SCS-65 GP of grade A, filler - kaolin, chalk or their mixture.

As a thickener. A mixture of water, alkali and sodium carboxymethylcellulose in a weight ratio of 38.7: 1: 2.1 is used. The mixture is preliminarily prepared, for which water, alkali (NaOH) and sodium carboxymethylcellulose are successively loaded into the tank and stirred for 3 hours at the speed of rotation of the stirrer blade shaft 70

rpm to obtain a homogeneous mass. The resulting mixture is characterized by the following parameters: viscosity 3.7 Pa "s, pH 6.5.

The composition of the modifying agent is methylphenylsiloxane Copolymer-5. This product is a clear liquid with no visible impurities.

Copolymer-5 is characterized by the following indicators: kinematic viscosity at 20 ° C - 65-85 St; flash point 300 ° C; pour point 70 ° C; acidity (pH) 6.5; silicon content 32%; evaporability at 500 ° С for 1 h 66.

Copolymer-b / is known as a product used in industry as a heat carrier.

The modifying agent is obtained as follows. Rosin is dissolved in a solvent containing xylene and white spirit in a ratio of 2; 1 (parts by weight). The content of rosin in the solvent is 70%. Methylphenylsiloxane is introduced into the resulting solution of rosin in an amount of 5% by weight with respect to the solution rosins. The components are mixed for 20 minutes and then incubated for 6 hours at 60-70 ° C, stirring occasionally. The resulting product (modifying agent) differs from the mixture of the starting components (without heat treatment for 6 hours) in viscosity ( Table 1), which influences the property of echnogo product.

Properties of the products are given in table.1.

The technology of preparation of the composition consists of two stages; a thickener and modifying agent is first prepared, and then mixed in a mixer. In this case, the mixer is introduced sequentially: a mixture of water, alkali and sodium carboxymethylcellulose, a filler, divinylstyrene latex, a modifying agent and water. The components are mixed for 20 minutes at a speed of rotation of the paddle shaft of the stirrer at 70 rpm. The resulting mixture is poured with a flexible hose into the tank.

A composition is used to glue the roll-on polyvinyl chloride materials to the hollow and wall coatings. To do this, a layer of the composition with a thickness of 0.3-0.4 mm is applied to the concrete or asbestos-cement base and held (until cast), and then PVC material is combined with the base. After the material is laid, it is smoothed with an elastic spatula. The joints of the material panels are treated by cold welding.

The compositions are given in table. 2. in the table. 3 - quality indicators of properties; in tab. 4 shows the viscosity stability of the present and known composition over time.

The adhesion strength is determined according to a known technique for the tensile stress of a polyvinyl chloride lining material from concrete. The tests were carried out 24 and 72 hours after gluing. Tackiness is assessed by tearing strength 10 minutes after bringing the surfaces to be glued before contact. The drying time (until tack-free) is determined by a known method.

Claims (1)

Invention Formula A building composition for bonding floors and walls, including divinyl styrene latex, filler, thickener and water, characterized in that, in order to reduce the viscosity of the composition, increase its stability over time, increase drying time and reducing the consumption, the composition as a filler contains a filler selected from the group containing kaolin, chalk, their mixture, as a thickener - a mixture of water, alkali and sodium carboxymethylcellulose in a mass ratio of 38.7: 1.0: 2.1, respectively additionally modifying agent in the form of a mixture of the composition, parts by weight: Rosin14 Xylene 4 White spirit 2 Methylphenylsiloxane 1 having a viscosity of 17.5 Pa “s, with the following ratio of components of the composition, wt%: Divinylstyrene latex40-50 Filler 5-8 Specified thickener 30-40 Specified modifying agent 5-8 Water Else Table 1 Components : Content of components, wt.X, consisting of ::: iii: i: Li :: ii ::: ii ::: i: :: i:: Divinile Tyrolnyn latex SKS-65 GP (commodity) Caolin8 Iel - The thickener is a mixture of water, intact and sodium salt of Arboxylacetyl Cellulose with a sweat ratio of 38.7: 1: 2.2 (cf.m.) Modifying agent7 Water5 Sodium Sulphate Vlllm waste treatment of mosaic slabs Smssy rosin and non-vinylsiloxane, n “half-halogen heat treatment” Note. Compounds 8-P - control; composition 12 - lime Table 2 pl 7 50 17 5 50 6 1.5 5 6 6, B 5 5 39 7 2,0 35 J9 28 558) M C, 0 6.0 5.0 37 5.0 5.2 g SnjKOCTk is composed of "xyness from 1p" or storing T "6l" "3 Spreadsheets