KR101736438B1 - Foam composition for sealing window frame - Google Patents

Abstract

The present invention relates to a foam composition for sealing window frames constructed when the window frames are installed in a building to fill gaps of inside and outside formed at the window frames and between outer walls. The foam composition for sealing the window frames of the present invention completes reticulation of a soft polyether or polyester urethane foam, having a pore structure of 25-90 ppi (pore per inch), density of 16-150 kg/m^3, air permeability of 1-200 cc/cm^2/se, and an open-cell pore structure, and immerses the soft polyether or polyester urethane foam in an impregnation solution and dries the same to form an impregnation layer, so as to have properties suitable for sealing the window frames by having a slow recovery time (SRT) in the range of 1-20 min.

Description

[0001] FOAM COMPOSITION FOR SEALING WINDOW FRAME [0002]

The present invention relates to a foam composition for sealing a window frame, which is applied to fill a gap between the window frame and the outer wall of the building when the window frame is installed in the building.

Houses, as well as apartments and large buildings, are equipped with doors of various shapes and sizes for accessing people or cargo. Various types of windows are installed for circulation and mining of the outside or for visual effects.

Most of the apartments inhabited by a large number of households have a balcony on the front, rear, or front and back, and a balcony or window frame is installed on the balcony to block the outside.

Such a window frame or chassis includes a window frame fixed to an opening of a wall forming a balcony or a window of the building, a chassis frame, and a door movably or openably installed on the chassis frame. On the other hand, after the construction of the window frame and the chassis frame, a gap is mostly formed between the window frame or the chassis frame and the bottom of the balcony or veranda. Accordingly, in order to finish or finish such a gap, the gap is filled with a backing material such as a foaming material, and is finally finished with a silicon bond.

If the chassis is installed on the waterproof jaw of the balcony, the urethane coating is applied to the balcony chassis and the waterproof jaw. When the window frame or the chassis is installed, the urethane coating coated on the gap between the window frame and the retaining wall and the gap between the chassis and the retaining wall has various problems Respectively.

In the conventional method, the polyurethane, the hardener and the petroleum are put into a certain container of the urethane, and it is transported to the work place by kneading with a hand or a machine. The primer is applied to a site to be applied and then filled with a foam material Apply urethane and use masking tape if necessary to flatten and flatten the surface.

In the conventional urethane construction method, it is necessary to insert a backup material prepared by using a loop, and it is necessary to mix polyurethane, hardener and petroleum into the container and harden after 2 to 3 hours to make it impossible to reuse. There was a problem that maintenance of the post-construction tool was troublesome. Particularly, the conventional urethane construction method is problematic in that when the temperature difference between summer and winter, daytime and nighttime is increased or decreased by 40 to 50 ° C, cracks are generated in the contact surface contacting the chassis and the retaining wall surface, there was.

In addition, in the conventional urethane coating method, gas is generated after the urethane coating, bubbles are generated, and there is a problem that the user has to complain about reworking. Urethane can not be cleaned if pollutants such as dust are added, There was a problem.

In view of such a conventional problem, Japanese Laid Open Patent Application No. 2006-91808 has proposed a window frame leak-barrier finishing tape. Korean Unexamined Patent Publication No. 2006-91808 discloses a polyurethane resin composition comprising a polyvinyl chloride (PVC) resin, a polyethylene resin, a polypropylene resin, a polystyrene resin polyurethane resin, an ABS (acrylonitrile butadiene styrene) resin, a polyacrylic resin, a polyurethane elastomer resin, A polyvinyl chloride adhesive, a polyethylene adhesive, a polypropylene adhesive, a polystyrene adhesive, a polyurethane adhesive, an ABS (acrylonitrile butadienestyrene) adhesive, or a polyacrylic adhesive And an adhesive layer coated with an adhesive composed of a silicone resin.

The conventional window frame water leakage barrier finishing tape as described above is easily deformed due to heat, low in sound absorption and heat insulation, and high in stability (SRT, SLOW RECOVERY TIME), so that dimensional stability during installation is unstable, And there is also a problem that the quality and aesthetics are deteriorated easily because of being easily protruded between the window and the outer wall.

Korean Published Patent Application No. 2006-91808.

The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a method for manufacturing a semiconductor device, which can easily form a gap between an outer wall and a window frame, thereby facilitating the installation and immersing the impregnation layer in an impregnation solution to block external air, moisture, (SRT), air tightness, flame retardancy, and visco-elasticity of a foam composition for sealing a window frame.

It is an object of the present invention to provide a foam composition for sealing a window frame, which has a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 (cc / open-cell) porous polyether or polyester urethane foam having a pore structure and subjecting the film-formed soft polyether or polyester urethane foam to any one of water-dispersed polyurethane, polyethylene or water-based acrylic resin or A foam composition for sealing a window frame, which comprises immersing the composition in an impregnation solution comprising 20 to 50 parts by weight of a flame retardant and 1 to 5 parts by weight of a dispersant in an amount of 100 parts by weight,
The impregnating solution temperature is 20 to 80 캜, the impregnating time is 15 to 25 minutes, the water content of the foam composition is in the range of 50 to 200 gr / mm <
And the thickness of the impregnated layer is 1 to 3 mm.

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Wherein the foamed body is immersed in the impregnation solution and has a rotational elasticity in the range of 1 to 20 minutes.

The embodiment of the foam composition according to the present invention is characterized by having a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 cc / cm 2 / sec, an open- A foam preparation step of preparing a polyether or polyester urethane foam;
A film forming step of forming a flexible polyether or polyester urethane foam provided by the foam preparing step;
The flexible polyether or polyester urethane foam obtained by performing the film-forming treatment in the film-forming treatment step is added to 20 to 50 parts by weight of a flame retardant based on 100 parts by weight of the water-dispersed polyurethane, polyethylene or water-based acrylic resin, And 1 to 5 parts by weight of a dispersing agent, followed by drying to form an impregnation layer. In this method for manufacturing a foam composition for sealing a window frame,
The impregnating solution is impregnated in the impregnating solution at a temperature of 20 to 80 ° C. for 15 to 25 minutes to have a water content of 50 to 200 gr /
And the thickness of the impregnated layer is 1 to 3 mm.

The present invention relates to a method for producing a silicone rubber composition which has air tightness against moisture, heat, sound, flame retardancy and visco-elasticity, excellent heat resistance and very slow slow recovery So that it is advantageous to shorten the construction process of the window frame and to prevent the window pane from being easily pinched between the window and the outer wall, thereby improving the quality by aesthetically pleasing.

A foam composition for sealing a window frame according to a preferred embodiment of the present invention has a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 cc / A soft polyether or polyester urethane foam having an open-cell pore structure is dipped in the impregnation solution and then dried to form an impregnated layer.

When the urethane foam is prepared as described above, a reticle operation is performed to facilitate absorption of the liquid. In the film-forming process, the closed-cell is formed into an open-cell or the size of the cell is increased, thereby improving air permeability compared to the case where the initial urethane foam is produced, The present invention allows easy penetration into the interior through the open-cell, thereby making it possible to ensure uniform dispersion of the impregnation liquid and to secure the tackiness, airtightness, flame retardancy and weatherability to be obtained in the present invention.

The film forming process includes placing a polyurethane (PU) foam having an open cell pore structure in a sheet or roll in a closed chamber, placing the inside of the chamber in a vacuum state of 810 to 850 mbar on a pressure gauge, For 28 to 38 minutes.

These mixed gases are ignited by ignition combustion within 2 seconds to cause explosion of the flame, and the heat in the sealed chamber is released to the outside in a total of about 15 seconds to complete the membrane treatment of the soft urethane foam. do.

The impregnating solution is impregnated with the urethane foam prepared as described above, and the impregnating solution is prepared by mixing 20 to 50 parts by weight of the flame retardant and 1 to 100 parts by weight of the dispersing agent with respect to 100 parts by weight of the water-dispersed polyurethane or the water- 5 parts by weight.

The water-dispersed polyurethane is prepared by reacting diphenyl methane diisocyanate (C15H10N2O2), hexamethylene diisocyanate (CH2) 6 (NCO) 2, isophorone diisocyanate (C12H18N2O2) A polyol which is any one selected from the group consisting of aliphatic isocyanates and polyester selected from the group consisting of polyesters, polycarbonates, polyethers, and dimers thereof; .

The water-dispersed polyurethane is composed of an aliphatic isocyanate and a polyether polyol, and can be easily dispersed in water when the water-dispersed pulley urethane is added. In the case of containing the aliphatic isocyanate and the polyether polyol, .

The aqueous acrylic resin may be either butyl acrylate or ethyl acrylate. Wherein the resin may contain from 30 to 50% by weight of the water-dispersible polyurethane or from 30 to 50% by weight of the aqueous acrylic resin. When the content of the water-dispersed polyurethane or the water-based acrylic resin is out of the above range, the adhesive force to the polyurethane sponge can not be maintained.

As the flame retardant, an inorganic flame retardant and an organic flame retardant can be used. As the inorganic flame retardant, Al (OH) ₃ and Mg (OH) ₃ can be used. Examples of the organic flame retardant include Antiblaze-519 (Netherlands ICL), Antiblaze-52 CY (Netherlands ICL), Antiblaze-524 (Netherlands ICL), REOFOS-35 (Chemtura), REOFOS-50 (US Chemtura), REOFOS-65 (Chemtura), FYROL CEL (Netherlands AKZO NOBEL) , AMGARD-1045 (Dutch ICL), 20 to 50 parts by weight of a flame retardant are mixed with 100 parts by weight of the water-dispersed polyurethane or water-based acrylic resin or a mixture thereof, Dispersing the mixture at a high speed for 30 minutes, mixing 1 to 5 parts by weight of a dispersant with the dispersed resin mixture, and forming the viscous solution having a viscosity of 100 to 3,000 cps.

The impregnation solution prepared above was added to the impregnation solution having a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 cc / Impregnated with polyether or polyester urethane foam.

At this time, the temperature of the impregnation solution is 20 to 80 ° C, and the impregnation time is 15 to 25 minutes. Impregnation is carried out so that the water solution has a water content of 50 to 200 gr / mm 2. If the impregnating solution temperature is below 20 캜, the impregnation time is long and the impregnation is irregular, thereby causing a problem of quality deterioration. On the other hand, if the impregnation time is less than 15 minutes, there is a problem that the impregnation layer is formed unevenly, and if the impregnation time is longer than 25 minutes, the impregnation layer is formed excessively thick.

The soft polyether or polyester urethane foam impregnated in the impregnation solution is dried, the drying time is 10 to 60 minutes, and the drying temperature is 80 to 160 ° C. If the drying temperature is lower than 80 ° C., there is a problem that it is difficult to obtain a desired tackiness together with a decrease in dryness and a problem of airtightness, airtightness, flame retardancy, visco-elasticity and heat resistance of air, moisture, heat and sound If the drying temperature is higher than 160 ° C, the surface hardening temperature is excessively increased to cause surface carbonization (oxidation), thereby changing the physical properties. If the drying time is less than 10 minutes, the drying time is short, If the drying time is more than 60 minutes, excessive increase of the surface hardening temperature promotes carbonization of the product, which may cause serious problems in physical properties and durability of the product.

At this time, the foam composition having the impregnated layer preferably has an air permeability of 1 to 200 cc / cm 2 / sec and a thickness of the impregnated layer of 1 to 3 mm.

If the air permeability is less than 1 cc / cm 2 / sec, the rolled product is badly restored when it is rolled-taped with a closed-cell pore structure. In addition, when it is attached to an actual window frame frame, The airtightness of the membrane may be excessively deteriorated to impair the physical properties such as airtightness and buffering property. When the air permeability is 200 cc / cm2 / sec or more, And there is a problem in sealing properties such as airtightness.

On the other hand, the water content of the foam composition is preferably in the range of 50 to 200 gr / mm < 2 >, and if the water content of the impregnation solution is 50 g / If the water content is 200 gr / mm < 2 > or more, the product is immersed excessively, resulting in both problems of drying and adhesion in roll-taping operation, and economical operation cost can not be secured.

If the thickness of the impregnated layer is 1 mm or less, the airtightness, flame retardancy and visco-elasticity of the air, moisture, heat, sound and the like are lowered and the heat resistance is lowered and the elasticity opposite to the slow recovery And the thickness of the impregnated layer is not less than 3 mm, it has airtightness against moisture, heat, sound, and flame retardancy and visco-elasticity, and heat resistance is high, but slow recovery ).

On the other hand, the water content of the foam composition is preferably from 50 to 200 g / mm < 2 >, and if the water content of the impregnation solution is less than 50 gr / mm & There is a problem with this.

The polyurethane urethane foam having a pore size of 50 ppi, a width of 300 mm, a length of 300 mm and a thickness of 50 mm was tested for the foam composition for sealing a window frame of the present invention, the urethane foam and the urethane foam subjected to the film- Test data as shown in Table 1 were obtained.

As can be seen from Table 1, after the impregnation treatment of the urethane foam with respect to the general urethane foam, the physical properties such as relative elongation were improved due to the tacky property of the impregnating composition, and the roll- ), It is possible to secure the workability of the site and convenience of the user's work.

In addition, the change in relative hardness is lowered through the structural change of the open-cell pore structure in the closed-cell structure. On the other hand, the relatively low hardness property value is the roll- Taping) It is not only easy to work by strengthening the softness when attaching, but it also enhances the adhesion between wall and window frame frame after attaching to the wall of window fixing frame after attaching actual window frame seal to improve airtightness, heat insulation, It is found that the present invention contributes to the proper expression of window frame seal characteristics by further reinforcing and reinforcing.

In addition, the air permeability is increased through the change of the open-cell pore shape in the closed-cell structure, so that the impregnation composition easily infiltrates into the corresponding urethane foam, so that the flame retardancy, And adhesion and waterproofness can be easily achieved.

Claims (5)

A foam composition for sealing a window frame,
A porous polyether or polyester having a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 (cc / cm 2 / sec) and an open-cell pore structure The flexible polyether or polyester urethane foam obtained by subjecting the urethane foam to a film-forming treatment and 20 to 50 parts by weight of a flame retardant based on 100 parts by weight of a water-dispersed polyurethane, polyethylene or an aqueous acrylic resin, And 1 to 5 parts by weight of a dispersant, followed by drying to form an impregnated layer. In this case,
The temperature of the impregnation solution is 20 to 80, the impregnation time is 15 to 25 minutes, the water content of the foam composition is in the range of 50 to 200 gr / mm <
Wherein the impregnated layer has a thickness of 1 to 3 mm.
delete delete The method according to claim 1,
Wherein the foamed body immersed in the impregnating solution has a reticulatability in the range of 1 to 20 minutes.
A method for producing a foam composition for sealing a window frame,
A soft polyether or polyester urethane foam having a pore structure of 25 to 90 ppi (pore per inch), a density of 16 to 150 kg / m 3, an air permeability of 1 to 200 cc / cm 2 / sec and an open-cell pore structure ;
A film forming step of forming a flexible polyether or polyester urethane foam provided by the foam preparing step;
The flexible polyether or polyester urethane foam obtained by performing the film-forming treatment in the film-forming treatment step is added to 20 to 50 parts by weight of a flame retardant based on 100 parts by weight of the water-dispersed polyurethane, polyethylene or water-based acrylic resin, And 1 to 5 parts by weight of a dispersing agent, followed by drying to form an impregnation layer. In this method for manufacturing a foam composition for sealing a window frame,
The impregnating solution is impregnated in the impregnating solution at a temperature of 20 to 80 ° C. for 15 to 25 minutes to have a water content of 50 to 200 gr /
Wherein the thickness of the impregnated layer is 1 to 3 mm.