RU2548072C1 - Roof and hydraulic insulation putty "liquid rubber element" - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: roof and hydraulic insulation putty contains a film-forming component, such as an acrylic dispersion, mineral filler - chalk or microcalcite, solvent, defoaming agent - low-molecular heat-resistant synthetic rubber, surfactant - neonol, and also isopropyl and butyl alcohols. To give the necessary colour, putty may additionally include a dyeing pigment in the amount of 1.2-1.4%.

EFFECT: invention makes it possible to increase water resistance, elasticity, adhesive strength, makes it possible to install hydraulic insulation at low temperatures and in wet weather.

2 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to waterproofing materials used in construction for waterproofing flat and inclined roofs of concrete and metal, for waterproofing foundations, structures, pipelines and other structures, for chemical protection of concrete (reinforced concrete), metal structures from groundwater and medium aggressive environments, and carbonation and anti-icing salts.

State of the art

Known waterproofing composition for coatings (RF patent for the invention No. 2158742, IPC C08L 95/00, C08L 95/00, C08L 9/00, C08L 17/00, C08L 23/16, publ. 10.11.2000), which consists of the following components: bitumen 50-80 wt. %, pre-degraded in bitumen rubber crumb, which is a waste of rubber production of 10-25 wt. %, polydiene rubber SKI-3 1-5 wt. %, polyethylene (LDPE) or a triple copolymer of ethylene with propylene and dienes -SKEPT-40 1-10 wt. %, mineral oil 1-15 wt. %

The disadvantage of this composition is the low adhesion to the base, a narrow temperature range of operation, the need to heat immediately before applying to the base to 140 ° C, the inability to form a waterproofing coating with a monolithic seamless layer in bulk.

Known waterproofing composition (RF patent for the invention No. 2179986, IPC C08L 95/00, C08L 81/04, C09D 195/00, C09D 181/04, publ. 02/27/2002), including bitumen, mineral filler, plasticizers, as polymer additives polysulfide rubber thiocol or polysulfide polymer TMP-2. The composition has the following ratio of components, wt. %: bitumen - 46.14-85.0, polymer additive - 4.744-33.33, hardener - 0.40-2.48, plasticizer - 0.322-1.91, filler - 4.53-31.67. A diphenylguanidine vulcanization accelerator can be incorporated into the curing paste.

The disadvantage of this composition is the low adhesion to the base, as well as the need to heat immediately before applying to the base to 140 ° C, the inability to form a waterproofing coating with a monolithic seamless layer in bulk.

Known cold mastic for waterproofing (RF patent for the invention No. 2280055, IPC C09D195 / 00, publ. 07.20.2006), including bitumen, a functional additive, an organic solvent, a plasticizer, polycaproamide production waste, as a functional additive - a complex of modifying agents. from low molecular weight hydroxyl-containing rubber, with a ratio of butadiene and isoprene monomers of 80:20, a molecular weight of 3000-3500, a polyisocyanate and / or a filler, a desiccant, a urethane formation catalyst, a plasticizer, low molecular weight alcohol, in the following ratio of components, wt. h.: bitumen - 25-200, plasticizer - 17-200, polycaproamide production waste - 0.5-100, functional additive - 100, organic solvent - 8-100.

The disadvantage of this composition is the inability to apply at temperatures less than + 5 ° C and humidity above 65%, the difficulty of applying to wet sweating or iced metal surfaces, the inability to apply this composition to non-ferrous metal (for example, galvanized steel, which is often used for roofing) .

Known water-dispersion composition for weather protection of various structural elements (RF patent for the invention No. 2281965, IPC C09D 5/02, C09D 129/10, C09D 133/08, publ. 08/20/2006). The composition includes a film-forming - 44% solution of acrylic polymer in Finindisp RSD 20 solvent, a thickener - 40% Polyphob TR-117 acrylic latex, antifreeze-ethylene glycol, a pH regulator - 25% aqueous ammonia solution, preservative additive, antifoam additive, as a solvent - water and additionally ethyl alcohol, with a certain ratio of components.

A disadvantage of the known composition is the impossibility of its application at low temperatures (less than + 18 ° C), as well as insufficient water resistance and adhesion to the base.

The closest solution to the proposed invention in technical essence is the paint "Rubber" VD-AK-101 (Specifications 2316-001-475700236-97), which is a water-dispersion paint with a high content of dispersion (latex) and water thickener. The paint includes latex, microcalcid, water, a thickener, a pH regulator, soot and various functional additives in the following ratio, wt. %: latex - 49%; microcalcid - 29%; water - 19%; thickener - 0.25%; pH regulator - 0.5%; carbon black - 1.5%; the rest is 1%.

The disadvantage of this composition is:

- the inability to apply at temperatures less than + 5 ° C and humidity above 65%;

- the difficulty of isolating the metal surfaces of roofs, pipelines from edge corrosion due to poor adhesion to metal substrates, especially non-ferrous metals;

- the difficulty of applying to wet sweating or ice-covered metal surfaces;

- contains ingredients that are soluble in water, respectively, the composition dissolves during prolonged interaction with water.

Disclosure of invention

The objective of the proposed technical solution is the creation of cold mastic for waterproofing, with increased adhesion to the base (concrete and metal, including non-ferrous) and the ability to form waterproofing and roofing in a cold way by pouring or painting with a brush or roller without using fire or heating and use additional rolled insulating materials.

The technical result is to increase water resistance, elasticity, adhesive strength, as well as the ability to perform waterproofing at low temperatures (up to -20 ° C), as well as in wet weather.

The specified technical result is achieved by the fact that the mastic roofing and waterproofing "ELEMENT Liquid Rubber" contains a film-forming component, a mineral filler, a solvent and functional additives, and the mastic contains an acrylic dispersion as a film-forming component, chalk or microcalcite as a mineral filler, as a solvent - solvent, as defoamer - synthetic rubber, heat-resistant low molecular weight, as a surfactant - neonol, as well as propyl and butyl alcohols, with the following component ratio, in wt. %: acrylic dispersion - 28.0-36.0; chalk or microcalcite - 15.0-22.0; solvent - 30.0-35.0; modifier additive-inverter - 10.0-12.0; isopropyl alcohol - 3.5-4.0; butyl alcohol - 1.5-2.0; antifoam - 0.1-0.2; Surfactant - 0.04-0.06.

To give the desired color, the mastic may additionally contain a coloring pigment in an amount of 1.2-1.4 wt. %

Roofing and waterproofing mastic “ELEMENT Liquid Rubber” is a solution of light-, ozone- and weather-resistant rubber in a solvent, modified with a high-modulus resin, with reinforcing fillers and pigments. The claimed composition of the mastic is characterized in that in order to improve the physicomechanical and protective properties it does not contain bitumen and water, which subsequently lead to the appearance of the disadvantages existing in the known waterproofing compositions.

Brief Description of the Drawings

In FIG. 1 shows a computer model of a molecule of a copolymer of acrylic acid.

In FIG. Figure 2 shows a computer model of a molecule of a copolymer of acrylic acid after exposure to a modifying additive-inverter.

The implementation of the invention

Mastic roofing and waterproofing "Liquid rubber ELEMENT" contains the following components, in wt. %:

acrylic dispersion - 28.0-36.0;

chalk (microcalcite) - 15.0-22.0;

solvent - 30.0-35.0;

modifier additive-inverter - 10.0-12.0;

isopropyl alcohol - 3.5-4.0;

butyl alcohol - 1.5-2.0;

antifoam - 0.1-0.2;

surface-active substance (surfactant) - 0.04-0.06;

and also in the composition of the mastic, if necessary, a coloring pigment can be added - 1.2-1.4.

As the film-forming in the composition of the mastic, an acrylic dispersion is used, which is obtained by polymerization of acrylic acid esters based on emulsifiers and stabilizers. The use of acrylic dispersion in the composition of the mastic makes it possible to produce elastic vapor-permeable coatings having high light and weather resistance, possessing high adhesion (adhesion) to many types of substrates. Due to the small particle size (0.05-0.15 microns), the mastic penetrates deeply into the porous substrates, thereby strengthening them.

Chalk or microcalcite, a natural inorganic fine product of the carbonate group, is used as a mineral filler in the composition. It is an environmentally friendly powder, usually white or light with a touch of color. The use of such a filler in the composition provides additional weather resistance, strength and hardness. The filler content in the composition of the mastic is 15-22 wt. % An increase in the content of the filler composition in the formulation leads to a significant increase in the effective viscosity of the material, processability and operational properties of the composition decrease, and in turn, a lower content leads to an increase in the fluidity of the composition.

As a solvent in the proposed composition using solvent. The solvent is a mixture of aromatic hydrocarbons with a low content of naphthenes, paraffins and unsaturated cyclic hydrocarbons. According to the technology of application, the solvent is added to the soluble material dosed, until a working viscosity is obtained. A decrease in the amount of solvent below the claimed limit leads to an unacceptable increase in viscosity, and an increase above the established limit leads to an unacceptable decrease in it. In both cases, the thickness of the waterproofing coating goes beyond the required values, which leads to a decrease in adhesion.

The modifying additive-inverter is a high-modulus car-forming resin, a molecular machine-inverter of pigments and fillers from the aqueous phase to the organic. After the modifying additive-inverter is added to the acrylic acid copolymer, not only the shape of the molecule changes (see Fig. 1-2), but also its properties. This change is due to the introduced functional groups of the claimed modifying additive-inverter.

Inverting additive is an inverter of pigments and fillers from the aqueous phase to the organic phase, which also prevents corrosion from spreading, accelerating the physical drying of the enamel film. Provides adhesion to both ferrous and non-ferrous metals. Inverter additive is a synthesized product, which includes:

1) neonol 9-6,

2) pentaerythritol,

3) phthalic anhydride,

4) triethylamine,

5) citric acid

6) monoethanolamine,

7) isopropyl alcohol.

The additive is a “guardian of corrosion” and prevents corrosion from spreading even if the coating is damaged. Such a card-forming resin accelerates the physical drying of the mastic film, provides adhesion to both ferrous and non-ferrous metals.

Isopropyl alcohol and butyl alcohol are used as solvents, and they are used in a certain ratio, which provides the necessary homogeneous composition. The addition of these alcohols within the specified limits provides the necessary water displacement of moisture from the surface of the base.

To ensure the necessary functional properties of the mastic, a defoamer (for example, synthetic heat-resistant low molecular weight SKTN rubber) and a surfactant (for example, neonol) are used in its composition.

Also, the coloring pigment can be added to the composition of the mastic, if necessary to obtain colored mastic.

The proposed mastic roofing and waterproofing is prepared according to the following technology.

The estimated amount of acrylic dispersion, chalk or microcalcite, solvent, modifying additives-inverters, isopropyl and butyl alcohol, antifoam and surfactant, if necessary, coloring pigment is loaded into the mixer without heating when the mixer is working, and mix the pigment, if necessary, and mix until completely dissolved.

Ready-made mastic for waterproofing before curing is a liquid (viscous) mass that allows you to form a coating with a layer of the required thickness (from 0.4 mm to 4 mm) by free casting, brush, roller, using high-pressure equipment (e.g. spray gun).

After curing, a waterproofing coating with the necessary properties is formed. In this case, the mastic, adhesive bonding to a concrete, cement, metal or other base during the curing process, does not require additional bonding of rolled materials. Mastic due to the high drying speed allows you to effectively fix defects (bumps, sinks, small cracks) on the surface of the base, which in turn guarantees the absence of bubbles under the roofing material.

Thus, the declared mastic roofing and waterproofing "ELEMENT Liquid Rubber" provides increased water resistance, elasticity, adhesive strength, as well as the ability to perform waterproofing at low temperatures (up to -20 ° C), as well as in wet weather.

A comparative analysis of the claimed invention showed that the set of essential features of the claimed complex is not known from the prior art and, therefore, meets the condition of patentability “Novelty”.

In the prior art there were no signs that coincided with the distinguishing features of the claimed invention and affecting the achievement of the claimed technical result, therefore, the claimed invention meets the patentability condition "Inventive step".

The above information confirms the possibility of using the inventive mastic as a roofing and waterproofing material, in particular for waterproofing concrete and metal roofs, for waterproofing foundations, structures, pipelines and other structures, for protection against groundwater, medium aggressive environments, etc., and therefore corresponds patentability condition “Industrial applicability”.

Claims (2)

1. Roofing and waterproofing mastic, containing a film-forming component, a mineral filler, a solvent and functional additives, characterized in that the mastic contains an acrylic dispersion as a film-forming component, chalk or microcalcite as a mineral filler, solvent as a solvent, and antifoam as a solvent - synthetic heat-resistant rubber, low molecular weight, as a surfactant - neonol, as well as isopropyl and butyl alcohols, with the following content and components, in wt. %:
acrylic dispersion - 28.0-36.0;
chalk or microcalcite - 15.0-22.0;
solvent - 30.0-35.0;
modifier additive-inverter - 10.0-12.0;
isopropyl alcohol - 3.5-4.0;
butyl alcohol - 1.5-2.0;
antifoam - 0.1-0.2;
surfactant - 0.04-0.06. 2. Mastic according to claim 1, characterized in that the mastic further comprises a coloring pigment in an amount of 1.2-1.4 wt. %

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