KR20230156974A - Insulation construction method by spraying using water-based two-component non-combustible and inorganic fiber insulation composition - Google Patents

Abstract

The present invention is an insulation construction method by spraying using a two-component non-flammable insulation composition consisting of a water-based organic and inorganic binder component as the first liquid and a curing component as the second liquid and inorganic fiber. A first step of independently preparing a first liquid composed of organic and inorganic binders, a second liquid composed of a hardener component, and inorganic fibers, and the first liquid, the second liquid, and inorganic fibers are each independently insulated. It consists of a second step of spraying the area and a third step of drying the area where the insulation component was sprayed.
The insulation construction method by spraying according to the present invention uses water-soluble insulation components, so it is environmentally friendly without the use of separate organic solvents, and at the same time, it can be mixed and installed directly on site, so it has the advantage of easy insulation construction. It has good space filling and adhesion, so it is suitable for insulation construction on the ceiling of a building, the inside of a wall, etc., and is especially suitable for insulation construction in the space of a ship.

Description

Insulation construction method by spraying using water-based two-component non-combustible and inorganic fiber insulation composition}

The present invention is an insulation construction method of insulating by spraying using a two-component non-flammable insulation composition consisting of a water-soluble organic and inorganic binder component as the first liquid and a curing agent component as the second liquid and inorganic fiber (mineral fiber). It's about.

In general, insulation materials save energy by efficiently blocking heat loss and heat gain, and are used in buildings, factories, ceilings and walls to prevent surface condensation caused by a drop in surface temperature.

In particular, ships are all made of steel plate structures, so heat from solar rays easily flows into the interior, which tends to increase the internal temperature, so appropriate insulation materials and insulation construction must be considered for ships.

Depending on the composition, insulation materials are divided into organic insulation materials such as Styrofoam and polyurethane, and inorganic insulation materials such as glass fiber, mineral wool, asbestos, and perlite. These insulation materials are easy to construct compared to insulation materials in the form of blocks and boards. Insulation materials such as spray-type insulation materials that are good at filling and filling the space of buildings, have excellent insulation performance and sound insulation effects, and are made of non-combustible materials are widely known.

As a prior art related to insulation materials such as spray type (spray coating material), for example, in Patent Document 1, 100 parts by weight of cellulose short fibers with a fiber length of less than 3 mm derived from paper-making chemical pulp; 1 to 5 parts by weight of interfiber viscosity relaxer, 1 to 5 parts by weight of filler, 0.5 to 5 parts by weight of dispersant, 5 to 20 parts by weight of thickener, 1 to 5 parts by weight of organic adhesive; 5 to 10 parts by weight of organic flame retardant, 5 to 15 parts by weight of inorganic flame retardant; It contains 0.5 to 3 parts by weight of an antibacterial and anti-fungal agent and 400 to 700 parts by weight of purified water for viscosity control, and the cellulose short fibers with a fiber length of less than 3 mm are pulp made by pulverizing papermaking chemical pulp through a hammer process and a grinder process. A spray composition is disclosed, and Patent Document 2 contains 50 to 70% by weight of an inorganic binder containing liquid sodium silicate, an aqueous hydrochloric acid solution, an aqueous citric acid solution, an aqueous aluminum hydrogen phosphate solution, and an aqueous zinc chloride solution, 5 to 10% by weight of silica airgel, and an inorganic binder. 4 to 7% by weight of fiber, inorganic material containing one or more selected from the group consisting of vermiculite, diatomaceous earth, kaolin, bentonite, bauxite, ball clay, onyxel, attapulgite, quartz, glass bubble, coresil and microporous Disclosed is a non-combustible insulation material composition containing 20 to 30% by weight of a hollow body and 1 to 3% by weight of a silane compound.

In addition, regarding the spray-type (spray-coated) insulation material for ships, Patent Document 3 states that in the spray mortar composition applied to the thermal insulation area in the ship, the spray mortar composition contains 10 to 20% by weight of sodium silicate, 5 to 10% by weight of silicate, and white cement. A spray mortar composition consisting of 10 to 20% by weight, 3 to 6% by weight of prohexasilicate, 2 to 5% by weight of aluminum hydroxide, and 60 to 70% by weight of vermiculite is disclosed.

The present invention was completed after confirming that simple insulation construction, good adhesion, and excellent insulation effect were obtained through insulation construction using a two-component insulation composition consisting of inorganic fibers, water-based organic and inorganic binders, and curing agent.

KR 10-1415088 B KR 10-1306632 B KR 10-1004888 B

The problem to be solved by the present invention relates to an insulation construction method by spraying using a water-based two-component incombustible insulation composition and inorganic fiber, and specifically, water-based organic and inorganic binders as the first liquid. It has good fillability and adhesion to spaces in buildings, especially ships, by spraying (spraying) using a two-component non-combustible insulation composition consisting of a hardening component as a second liquid and mineral fiber, and is non-combustible and insulating. The purpose is to provide this excellent insulation construction method.

As a means of solving the problem of the present invention, the insulation construction method by spraying using a water-based two-component non-combustible insulation composition and inorganic fiber is a). A first step of independently preparing the first liquid composed of aqueous organic and inorganic binders, the second liquid composed of a hardener component, and inorganic fibers, b). A second step and c) of spraying the first liquid, the second liquid, and the inorganic fiber each independently onto the insulated area. It consists of a third step of drying the area where the insulation component was sprayed.

One embodiment of the insulation construction method by spraying using the water-based two-component non-flammable insulation composition and inorganic fiber of the present invention is a). Sodium silicate, silica sol, zeolite, lime, cement for 100 parts by weight of one or more organic binders selected from aqueous acrylic emulsion, polyvinyl alcohol (PVA), ethylene vinyl acetate (EVA), and vinylpyrrolidone-vinylacetate copolymer. and a first liquid composed of 20 to 40 parts by weight of at least one inorganic binder selected from gypsum and functional additives, a second liquid composed of one or more components selected from borax and boric acid, functional additives, and glass fiber, The first step, b), of preparing one or more inorganic fibers selected from glass wool and cerak wool. A second step and c) of spraying the first liquid, the second liquid, and inorganic fibers independently on the insulated area. It consists of a third step of drying the area where the insulation component was sprayed.

The insulation construction method by spraying using a water-based two-component non-combustible insulation composition and inorganic fiber according to the present invention can be applied to the insulation of walls, ceilings and spaces of buildings, and is therefore not limited to insulating objects, especially ships. It is especially suitable for building insulation in spaces.

In addition, the insulation construction method by spraying according to the present invention uses water-soluble insulation components, so it is environmentally friendly as it does not require a separate organic solvent, and can be used immediately by adjusting the viscosity using water such as tap water on site. Construction is easy.

The insulation construction method by spraying according to the present invention uses a water-soluble insulation component, so it is environmentally friendly without the use of a separate organic solvent, and at the same time, it can be mixed and installed directly on site, so it has the advantage of easy insulation construction.

In addition, it has good space filling and adhesion, so it is suitable for insulation construction on the ceiling of a building, inside walls, etc., and is especially suitable for insulation construction in the space of a ship.

Hereinafter, the present invention will be described in more detail through specific details for carrying out the present invention and <Examples> and <Test Examples>, but the present invention is not limited by the description below and the Examples.

The insulation construction method by spraying using the water-based two-component non-flammable insulation composition and inorganic fiber of the present invention is a). The first step, b), of independently preparing the first liquid composed of aqueous organic and inorganic binders, the second liquid composed of a hardener component, and inorganic fibers. A second step and c) of spraying the first liquid, the second liquid, and the inorganic fiber each independently onto the insulated area. It includes a third step of drying the area where the insulation component was sprayed, and a functional additive is added to the first liquid and the second liquid, respectively.

The first step according to the present invention is a process of preparing the insulating composition according to the present invention, the first liquid composed of water-based organic and inorganic binders as main components, the second liquid composed of hardener as main components, and inorganic fiber. It consists of preparing each independently.

In the present invention, the water-based organic binder composed of the first liquid is one or more components selected from aqueous acrylic emulsion, polyvinyl alcohol (PVA), ethylene vinyl acetate (EVA), and vinylpyrrolidone-vinylacetate copolymer, The inorganic binder is one or more components selected from sodium silicate, silica sol, zeolite, lime, cement, and gypsum, and is preferably composed of 20 to 40 parts by weight of the inorganic binder relative to 100 parts by weight of the organic binder.

The aqueous acrylic emulsion of the present invention is a widely known polymer resin as a homopolymer and copolymer prepared by polymerizing acrylic acid and its derivatives by emulsion polymerization, and it is preferable that the aqueous acrylic emulsion is composed of an average molecular weight of 5,000 to 50,000.

The aqueous acrylic emulsion contains one or more monomers selected from acrylic acid, butyl acrylate, 2-ethylhexane acrylate, vinyl acetate, styrene, acrylonitrile, methyl methacrylate, ethylhexaacrylate, butyl acrylate, etc.

In addition, polyvinyl alcohol (PVA), ethylene vinyl acetate (EVA), and vinylpyrrolidone-vinylacetate copolymer are widely known polymer resins, and can be easily obtained by those skilled in the art of the present invention.

The inorganic binder composed of the first liquid is a component that improves the compatibility between inorganic fibers and organic binders and the durability of the insulation material while providing incombustibility and insulation properties to the insulation composition. Inorganic binders include sodium silicate, silica sol, zeolite, One or more ingredients are selected from lime, cement and gypsum.

The first liquid contains additional functional additives in addition to the organic and inorganic binders. The functional additive is a component formulated to improve the miscibility, homogeneity, and stability of the components contained in the first liquid, and the functional additive is a surfactant. , one or more ingredients selected from dispersants, antifoaming agents, and preservatives are appropriately adjusted in the range of 10 to 25 parts by weight based on 100 parts by weight of the organic binder.

The surfactant includes, for example, polyoxyethylene, fatty alcohol ether, fatty acid ester, polyoxypropylene, sorbitan monooleate, sorbitan monopalmitate, anionic surfactant such as sodium-oleic acid sulfonate, and quaternary chloride. Cationic surfactants such as ammonium and alkyl-amine hydrochloride can be used, and sodium hexametaphosphate is used as a dispersant, modified silicone oil is used as an antifoaming agent, and chloronaphthene is used as a preservative.

In the present invention, borax and boric acid, which are composed of the second liquid, are crosslinking agents for polyvinyl alcohol (PVA), which are composed of organic binder components, and are ingredients that harden or solidify the organic binder component. It is preferable to use borax and boric acid in combination. Additionally, it consists of combining calcium carbonate as a surfactant and drying aid.

It is advisable to mix the second liquid with boric acid in the same proportion to 100 parts by weight of borax, 30 to 45 parts by weight of surfactant, 25 to 30 parts by weight of calcium carbonate, and 2 to 5 parts by weight of antifoaming agent.

The inorganic fiber selected in the present invention is a component that provides thermal insulation properties of the insulation composition, and one or more components are selected from glass fiber, glass wool, and cerak wool, and preferably glass fiber. is selected.

The mineral fibers are used by cutting them into sizes of 2 to 60 mm in length, and it is preferable to use a mixture of fibers of various lengths. When spraying the cut inorganic fibers, there is a problem in that fine powder, etc. scatters into the air. Therefore, it is preferable to use a mixture of 5 to 10 parts by weight of antistatic agent and dust absorbent per 100 parts by weight of inorganic fiber.

In the second step according to the present invention, the first liquid containing the binder as the main ingredient, the second liquid containing the hardener as the main ingredient, and the inorganic fiber are applied to the area to be insulated, such as the wall, ceiling, and space of the wall of the building. It consists of a process of spraying and insulating parts, spaces, etc. of ships.

The first and second liquids used for insulation construction in the second step are sprayed at the insulation site by regularly pyroxitizing water as a solvent to have an appropriate viscosity.

The first liquid is mixed with water and diluted to a concentration of 40 to 45% by weight, and the second liquid is diluted to 20 to 25% by weight and sprayed. For good spraying, the first liquid has a viscosity of 1500 to 6,000 mPa·s. It is desirable to maintain the viscosity of the second liquid at 300 to 600 mPa·s.

In addition, the spraying method of the first liquid, the second liquid, and the inorganic fiber independently sprays the first liquid, the second liquid, and the inorganic fiber at the same time, but for the attachment of the inorganic fiber, the first liquid and the second liquid are sprayed for the first time. It is preferable to spray the inorganic fibers after spraying, and the first and second liquids use a spraying means having a spray nozzle with a diameter of 0.5 to 5 mm, and the diameter of the nozzle is determined by the appropriate spray amount of the binder and the hardener. It is set considering the adhesion and drying time, and the inorganic fiber is sprayed using a hose with a hose diameter of 10 to 200 mm.

Below, through <Examples> and <Test Examples>, the insulation construction method by spraying using the water-based two-component incombustible insulation composition and inorganic fibers of the present invention will be explained in more detail.

<Example 1>

Insulating ingredients were added to the prepared mixing tank according to the composition and ratio shown in Table 1 below, and uniformly mixed and homogenized to prepare the first solution with a concentration of 40% by weight and the second solution with a concentration of 20% by weight, respectively. The viscosity of the first and second liquids was measured to be 1800 Pa·s and 400 Pa·s, respectively.

In addition, glass fibers cut into lengths of 6 mm, 20 mm, and 30 mm were mixed at the same weight ratio, and glass fibers were prepared by uniformly spraying antistatic agent and dust absorbent.

1st liquid 2nd liquid Composition ingredients Composition ratio (parts by weight) Composition ingredients Composition ratio (parts by weight) Acrylic emulsion 50 borax 50 polyvinyl alcohol 50 boric acid 50 sodium silicate 30 Surfactants 15 Surfactants 8 calcium carbonate 22.5 dispersant 5 defoamer 2.5 defoamer 3 water 560 antiseptic 2 water 222

<Example 2>

The first liquid and the second liquid prepared in Example 1 were filled in the storage tanks of each spray means equipped with a spray nozzle with a diameter of 4.0 mm, and separately in the storage tank of the spray means equipped with a hose with a diameter of 100 mm. Prepare an insulation composition for insulation construction by filling it with the glass fiber prepared in step 1.

Prepared width Liquid 1, Liquid 2, and glass fiber were sprayed to form a 5 mm thick insulation layer, and then dried for a certain period of time to complete the insulation construction.

<Test example>

Drying time and adhesion strength of the insulation material for the insulation construction of the present invention according to <Example 2>. Thermal conductivity and incombustibility were tested and the results are shown in [Table 2] below.

Test Items unit Example 2 Test Methods drying time Touch dry candle 30 KSF 4715 Hardening minute 10 Adhesion strength kgf/㎡ 72.5 thermal conductivity w/mk 0. 29 KS L 9016 nonflammable mass loss % 9.5 KS F ISD 1182:2004 temperature difference ℃ 1.8

By using the insulation material composition according to the present invention, both thermal insulation and non-combustible properties can be realized at the same time, and since insulation construction can be easily performed by spraying, it is expected to be very commercially advantageous as it is an environmentally friendly construction. there is.

Claims (5)

a). A first step of independently preparing a first liquid composed of aqueous organic and inorganic binders, a second liquid composed of a hardener component, and inorganic fibers,
b). A second step of independently spraying the first liquid, the second liquid, and the inorganic fiber to the insulated area, and
c). Spraying using an aqueous two-component incombustible insulation composition and inorganic fibers, comprising a third step of drying the area where the insulation component is sprayed, and wherein functional additives are added to the first liquid and the second liquid, respectively. Insulation construction method using (spray coating) The method of claim 1, wherein the organic binder is one or more components selected from aqueous acrylic emulsion, polyvinyl alcohol (PVA), ethylene vinyl acetate (EVA), and vinylpyrrolidone-vinylacetate copolymer, and the inorganic binder is sodium silicate and silica. It is one or more components selected from sol, zeolite, lime, cement and gypsum, and is composed of 20 to 40 parts by weight of an inorganic binder based on 100 parts by weight of the organic binder. Insulation construction method by spraying. The method of claim 2, wherein the functional additive additionally added to the first liquid is one or more components selected from surfactants, dispersants, antifoaming agents, and preservatives, and the functional additives additionally added to the second liquid are surfactants, carbonic acid, etc. A water-based two-component non-flammable insulation composition characterized by calcium and anti-foaming agent, and an insulation construction method by spraying using inorganic fibers. The method of claim 3, wherein the first liquid and the second liquid are each diluted with water at the insulation site and sprayed at 40 to 45% by weight for the first liquid and 20 to 25% by weight for the second liquid. Insulation construction method by spraying using liquid non-flammable insulation composition and inorganic fiber. The method of claim 4, in the second step, the first liquid, the second liquid and the inorganic fiber are sprayed simultaneously or the first liquid and the second liquid are sprayed first and then the inorganic fiber is sprayed, and then the first liquid and the second liquid are sprayed respectively. and an insulation construction method by spraying an aqueous two-component non-flammable insulation composition and inorganic fibers by simultaneously spraying inorganic fibers.