KR101656029B1 - Multy insulation construction being composed of urethane layer and nonflammable natural fibrous material layer - Google Patents

Abstract

The present invention is characterized in that a hard urethane insulation layer is formed on the lower floor surface of a building roof structure of various structures and forms, the lower floor surface (ceiling) of the uppermost floor slab or the floor of the floor of the lowermost living room, Natural fibrous insulation layer or nonflammable mineral fiber insulation layer is laminated and formed as a surface layer to satisfy not only the energy saving design standard of the building but also a considerable safety against the fire, And to a method for constructing a composite layer insulating structure capable of increasing insulation efficiency and construction efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat insulating structure for forming a composite laminate of a hard urethane insulating material and a nonflammable natural fibrous insulating material,

The present invention can be applied to a floor surface of a building roof structure of various structures and forms, a floor surface of a floor of a floor of the floor of the floor of the uppermost slab or a floor of a floor of the floor of the floor of the building, (Cellulose fiber insulation / insulation material) or non-combustible mineral fiber (mineral fiber) laminated on the flame retardant material to form an integral composite insulation layer in an appropriate thickness ratio to provide insulation, sound insulation / sound absorption And fire safety, and a method of constructing the same.

As of 2005, Korea's total greenhouse gas emissions amounted to 594 billion tCO2. Of these, the emission rate of buildings and the transportation sector account for 25.6% and 16.7%, respectively. However, The government is expected to increase. In line with the policy direction of "carbon-abatement construction technology development", which is the first key policy of the three policies to implement the "green technology and new growth engine" strategy that the government is promoting, (Roof, exterior wall, window, etc.) of energy-related building permits, such as revising the "Energy-saving design standards" and "Eco-friendly housing construction standards".

Specifically, the "Energy-saving design standards for buildings" were formerly the backward-type enumeration standard for defining the thickness of each type of insulation material, such as the central region, the southern region, and the Jeju Island. However, Energy saving design standard (Ministry of Land, Infrastructure and Transport Notice No. 2013- 587) "has been revised based on the heat paring rate without discrimination of the insulation standard which is performance standard type of advanced country.

However, nowadays, according to the insulation standard of the above-mentioned "Energy-saving Design Criteria for Buildings", various insulation methods are used to increase the efficiency of insulation and the productivity of construction There is room for it.

In order to meet the policy direction of the "green technology and industrial new growth engine" strategy and the "carbon-reduction type building technology development" of the above-mentioned country, one of the concrete realization measures thereof is a multi-layer insulation structure And to contribute to energy saving and carbon reduction of the building by making use of the method and construction method,

As a result of the above-mentioned "Energy-saving design standards for buildings (Ministry of Land, Infrastructure and Transport Notice No. 2013- 587)",

Insulation materials such as styrofoam, extruded boards and urethane which have been generally used so far have a high heat insulation performance, but they have a high flammability,

The composite insulation layer can also be used as the interior finishing material of buildings conforming to the fire safety standards of the "Regulations on standards for evacuation and fire protection of buildings" (Ministry of Land, Transport and Communications No. 102)

In addition, the conventional insulation method based on the extrusion board insulation is a method of cutting the extrusion board insulation material in the case of a projecting structure such as a beam, a girder, a deck plate, etc., There is a problem in that not only the installation accuracy is lowered but also the thermal bridging occurs due to the gap or the like generated at the joint portion of the heat insulating material or the heat insulating effect is reduced by half,

In order to solve these problems, it is aimed to improve the efficiency of insulation and the productivity of construction by developing and using a composite layer insulation method in which two or more kinds of insulation materials are formed as an integral insulation layer of a composite layer structure by using an injection system.

In accordance with the insulation standard of the above-mentioned "Energy-saving design standards of buildings (Ministry of Land, Infrastructure and Transport Notice No. 2013- 587)" and the "Regulations on standards for the evacuation and fire protection structure of buildings (Ministry of Land Transportation Regulation No. 102) Developed an insulation method to form two or more insulation materials by injection system to ensure insulation performance, fire safety performance and sound insulation / sound absorption effect suitable for interior finishing materials such as neighborhood living facilities and ceilings of factories do.

It is possible to prevent the insulation construction and the thermal bridge phenomenon which are closed without any gap on the basis of any structure and form such as the reinforced concrete beam, the steel frame I-beam, the H-beam and the uneven deck plate base, And to reduce the construction period and reduce the construction cost, we will develop a multi-layer insulation method using injection system.

As a natural fiber-based thermal insulation material, a composite layer insulation method that can increase energy and carbon abatement and environment-friendly effect by recycling waste newspaper and processing it with less energy is developed.

According to the structure of the lower floor (ceiling) and the half-width of the roof structure of the building, by developing a multi-layer insulation method conforming to the relevant provisions of the "Fire Safety Standard for Sprinkler Facility (Notice No. 2013-21 of the Fire Emergency Management Agency) To be exempted.

By developing and using the composite layer insulation structure of the present invention and the construction method thereof, we are actively responding to the policy direction of the national "green technology and industrial new growth engine" strategy and "carbon-reducing building technology development" It can be expected that the following advantages and effects are expected.

First, in the revised "energy conservation design standards for buildings", the uppermost ceiling facing the outer region of the central region with the highest heat paring rate standard is specified to have a heat conduction ratio standard value of 0.18 W / ㎡K or less,

2, 3 and 4) according to the present invention can secure an insulation effect of less than 0.16 W / m < 2 > K, which is less than 11%

The thickness of the heat insulating layer to meet the above-mentioned heat conduction ratio standard should be equal to or more than 180 mm in the case of using a general extrusion board thermal insulator,

The composite layer insulation method (composite layer insulation method of FIGS. 2, 3 and 4) according to the present invention has a thickness of 140 mm which is smaller by 22% than that of the composite layer insulation method of the present invention (up to 150 mm in view of deviation of insulation construction by the injection system) .

Second, in accordance with the provisions of Article 24 of the 「Regulations on the Standards for the Evacuation and Fire Rescue of Buildings (Ministry of Land, Transport and Communications No. 102)」 above, apartment buildings, multifamily houses, multi-family houses, The interior finishing materials such as ceilings and walls of buildings are required to use flame retardant materials, semi-fire-retardant materials or fire-retardant materials to ensure fire safety.

In the case of the composite layer insulation method according to the present invention, the natural fibrous insulation layer, which is a flame retardant, is formed as a surface layer to compensate for the fire resistance of the hard urethane, so that it can be used as an internal finishing material suitable for the flame-

In addition, the spray type multi-layer thermal insulation method in which a non-combustible mineral fiber insulation layer is formed as a surface layer on a hard urethane insulation layer can be used as an internal finishing material suitable for a fire-retardant standard more safe than the above-mentioned fire retardant standards.

Third, by using the above-mentioned multi-layered thermal insulation method, it is possible to construct a seamless insulation without any gap on the base of any structure and form such as protruding structure as shown in Figs. 3 and 4 or a steel plate deck plate base having concave and convex on the bottom of a concrete slab,

It is possible to fundamentally solve the thermal bridge phenomenon that may occur in the case of a general extrusion board thermal insulation construction, thereby reducing defects in insulation work and securing insulation performance more reliably.

Fourth, by improving the efficiency of construction by the multi-layer insulation method, the construction time can be shortened by 20 ~ 30% and the construction cost can be reduced by 10 ~ 20% as compared with general extrusion board insulation method.

Fifth, according to the acoustic transmission loss test of the fibrous material, a 50-mm-thick fibrous material has a transmission loss of 14 db with respect to the noise of 250 Hz and 10 dB with respect to the noise of 500 Hz. In the case of the composite layer insulating layer, Sound insulation effect,

According to the sound absorption and reverberation test of the fibrous material, the sound absorption rate of the fiber material of 50 mm thickness was 0.65 for noise of 250 Hz and 1.04 for noise of 500 Hz, and the sound insulation effect of the above- have.

Sixth, the natural fibrous insulation material (cellulose-based heat insulation / insulation material) forming the surface layer of the above-mentioned multi-layered insulation structure is mostly recycled pulverized newsprint paper, so it consumes less energy in processing and production process, .

In accordance with Article 35 (2) of the 「Environmental Technology Development and Support Act」, on February 16, 2007, from the Director of Eco-friendly Product Promotion Agency entrusted with the task of environmental label certification from the Minister of the Environment, (Insulation and Insulation) in order to save resources and energy.

Seventh, in accordance with Article 15 of the Fire Safety Standards of the Sprinkler Facility (Notice No. 2013-21 of the National Emergency Management Agency), when the space between the ceiling and the ceiling of the slab is less than 1m, one of the ceiling and the half- Alternatively,

When the space between the ceiling and the half is less than 2m and the ceiling and the half are made of incombustible material,

Firefighting sprinklers are exempted from the obligation to install,

In the case of using a spray type composite layer insulation method in which a hard urethane insulation layer is formed on the bottom surface of a slab and a non-combustible mineral fiber insulation layer is formed as a surface layer thereon, the installation of the sprinkler can be waived in accordance with the above-mentioned "fire safety standards for sprinkler installation".

1 is a flow chart of a composite layer insulation method according to the present invention.
Fig. 2 shows a composite layer insulation structure for forming a natural fibrous insulation layer (surface layer) on a rigid urethane insulation layer according to the present invention.
FIG. 3 shows a composite layer insulation structure in which a fibrous insulation layer is formed on the injection rigid urethane insulation layer according to the present invention with respect to a portion where the reinforced concrete beam protrudes.
FIG. 4 is a view showing a state in which the injection type rigid urethane heat insulating layer according to the present invention is formed on the bottom surface of a slab when a steel frame I-beam or H-beam projecting a slab is projected, And shows a composite layer insulating structure formed by adhering only with a heat insulating layer.
5 shows a composite layer insulation structure for forming a mineral fiber insulation layer (surface layer) on a rigid urethane insulation layer according to the invention.
Fig. 6 shows a composite layer insulation structure in which a natural fibrous insulation layer (surface layer) is formed on a hard urethane insulation layer according to the present invention and a floor finish is formed thereon, with respect to the bottom floor of the building.
7 shows a structure and a use state of the fibrous injection system, which includes a blowing machine for powder / pressure feeding fibrous insulation, a pressure feed pipe for fibrous insulation, a pump liquid system, (Spray on System) composed of a nozzle, a jet, and the like.
FIG. 7A shows a pump liquid system in the fibrous injection system, and FIG. 7B shows the detailed structure of the nozzle and the jet and the spray use state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

2, 3 and 4, the composite floor insulation structure formed on the lower floor surface or the lower floor surface (ceiling) of the uppermost floor slab of the roof structure of the building according to the embodiment of the present invention.

As the roof structure or the uppermost slab of the above-mentioned structure, the composite floor insulation structure of the present invention and the construction of the present invention can be applied to the floor surface requiring various construction such as reinforced concrete, unfilled concrete, steel frame, concrete and steel frame composite structure, The method can be easily and efficiently applied.

In carrying out the above-mentioned multi-layered thermal insulation structure and its construction method, it is necessary to clean and remove foreign materials such as dust, sand and protruding objects of 5 mm or more which are left on the floor surface of a building requiring insulation work, Remove solvents and other contaminants.

When the base surface of the adiabatic construction is a concrete surface, when the water content is 6% or more, the water content is dried to be less than 6%.

The construction of the hard urethane insulation layer should be performed when the temperature of the construction site is 5 ℃ ~ 55 ℃, humidity is 85% RH or less and wind speed is 20m / sec or less.

A water-soluble acrylic resin having a concentration of 35% by weight is used as a primer to be applied on the surface 210 of the adiabatic construction, the hard urethane insulation layer, the natural fibrous insulation layer and the mineral fiber insulation layer.

A hard urethane heat insulating layer 220 is formed on the primer layer by a urethane injection system,

The lower floor of the roof structure of the building in the central region or the lower floor of the uppermost slab

(Ceiling), which comprises:

When the surface layer is a natural fibrous insulating layer, the thickness of the hard urethane heat insulating layer is 90 mm to 100 mm,

When the surface layer is a mineral fiber insulating layer, the thickness of the hard urethane heat insulating layer is set to 100 mm to 110 mm,

The hard urethane insulation layer is uniformly applied with a thickness of 13 mm to 25 mm formed by one injection, and a curing time of 4 to 5 hours is set

A water-soluble acrylic resin is applied (250) to the hard urethane insulation layer 220 with a primer, and then a natural fibrous insulation layer 230 is formed thereon,

2, 3 and 4, the hard urethane insulating layer is formed to have a density of 0.03 to 0.06 g / cm3, a thermal conductivity of 0.020 to 0.024 W / mk and a thickness of 90 to 100 mm, and the natural fibrous insulating layer has a density of 0.03 to 0.05 g / cm < 3 >, a thermal conductivity of 0.033 to 0.035 W / mk, and a thickness of 50 mm to 60 mm, and the thickness of the entire multilayered heat insulating layer is 140 mm to 150 mm.

A water-soluble acrylic resin mixed with 20% by weight of cement is applied (260) on the natural fibrous insulation layer 230 to finish durability by firmly adhering and fixing the composite layer insulation layer to complete the durability of the composite layer insulation layer. Complete.

As shown in FIG. 3, in the case where the base portion is made of reinforced concrete, the beam is wrapped with the same method and thickness to form a composite layer insulation layer. FIG. 4 shows that the base portion is made of concrete and steel frame I- -beam. The other process is as shown in Fig. 2. When the surface layer is a natural fibrous insulating layer, the thickness of the hard urethane insulating layer is 90 to 100 mm,

When the surface layer is a mineral fiber insulating layer, the thickness of the hard urethane heat insulating layer is set to 100 mm to 110 mm,

The hard urethane insulating layer is omitted from the protruding portion of the steel frame I-beam or H-beam 470 and is formed by wrapping only the natural fibrous insulating layer 430 having a thickness of 50 to 60 mm or the mineral fiber insulating layer 430 having a thickness of 50 to 60 mm .

5 shows a composite layer insulation method using a spray type hard urethane insulating layer and a mineral fiber insulation layer. The other process is the same as the method of FIG. 2, in which the hard urethane insulating layer 520 is adhered to a thickness of 100 to 110 mm A mineral fiber insulation layer 530 having a density of 0.04 to 0.07 g / cm 3, a thermal conductivity of 0.040 to 0.080 W / mk and a thickness of 50 mm to 60 mm is formed thereon to form an overall composite layer heat insulating layer having a thickness of 150 to 160 mm.

6, the hard urethane insulation layer 620 has a thickness of 50 to 60 mm, the natural fiber insulation layer 630 has a thickness of 30 to 60 mm, The total thickness of the composite layer insulating layer is 80 to 90 mm, and the heat conduction ratio is 0.29 W / m 2 K or less.

The constituent components of the natural fiber-reinforced thermal insulation material are 80% by weight of the whole of the recycled pulp made from recycled newsprint paper, a mixture of boric acid corresponding to 13.5% by weight of the whole as a refractory admixture and 6.5% .

The natural fiber insulation layer is formed by spraying / mixing an acrylic resin as a mixture with a natural fiber insulation material using a fiber spraying system. The mixing ratio of the natural fiber insulation material is 35 wt% (1: 312.5 to 343.75) of acrylic resin diluted to a concentration of 35% by weight with respect to 5 to 3 m < 3 > of natural fibrous heat insulating material in terms of volume by using 16 kg of water- do.

When the natural fibrous insulating layer or the mineral fiber insulating layer is formed on the hard urethane insulating layer, the air pressure is kept constant at 3 to 4 kg / cm 2, while the spray pressure is maintained in the range of 10 to 15 kg / cm 2, And spraying the mixed liquid with the natural fiber or mineral fiber insulation material while spraying angle of 70 to 90 degrees with respect to the base surface is sprayed and sprayed. The thickness formed by one injection spraying is 30 mm or less .

The fibrous injection system used for constructing the natural fibrous insulation layer or the mineral fiber insulation layer includes a blowing machine 720 which can pressurize up to 100 m while injecting and dispersing a heat insulating material and maintaining the blowing pressure / injection amount / A pumping system 750 having a diameter of 6 to 7 Cm and a 250 PSI compressor capable of sending a mixture of 10 to 12 L per minute at a constant pressure / injection rate / speed up to 100 m, And a nozzle 760 having a plurality of jets 761. The nozzles 760 are formed of a plurality of nozzles 760,

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications and equivalent embodiments may be possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined only by the appended claims.

210: a base member such as a top floor slab or roof of a building
220: Hard urethane insulation layer
230: Natural fibrous insulation layer
240: Primer layer applied to the substrate
250: primer layer applied to the surface of the hard urethane heat insulating layer
260: Water-soluble acrylic resin finishing layer mixed with 20% by weight of cement to be applied to the surface of the natural fibrous heat insulating layer
310: protruding base member such as roof top slab or roof of a building
320: Hard urethane insulation layer
330: Natural fibrous or mineral fiber insulation layer
340: Primer layer applied to the substrate
350: primer layer applied to the surface of the hard urethane heat insulating layer
360: Water-soluble acrylic resin finishing layer mixed with 20% by weight of cement applied to the surface of a natural fibrous or mineral fiber insulating layer
410: Upper-layer slab of a building or a protruded steel base member such as a roof
420: Hard urethane insulating layer
430: natural fibrous or mineral fiber insulation layer
440: primer layer applied to the substrate
450: Primer layer applied to the surface of the hard urethane heat insulating layer
460: a water-soluble acrylic resin finishing layer obtained by mixing 20% by weight of cement to be applied to the surface of a natural fibrous or mineral fiber insulating layer
470: I-beam or H-beam
510: a base member such as a roof top slab or a roof of a building
520: Hard urethane insulation layer
530: Mineral fiber insulation layer
540: Primer layer applied to the substrate
550: a primer layer applied to the surface of the hard urethane heat insulating layer
560: Water-soluble acrylic resin finishing layer mixed with 20% by weight of cement applied to the surface of the mineral fiber insulation layer
610: The base member of the living room floor of the lowermost building
620: Hard urethane insulation layer
630: Natural fibrous insulation layer
640: Primer layer applied to the substrate
650: primer layer applied to the surface of the hard urethane heat insulating layer
660: water-soluble acrylic resin finishing layer mixed with 20% by weight of cement applied to the surface of the natural fibrous insulating layer
670: Living room flooring finish
710: Insulation material hopper of blowing machine
720: Blowing machine
730: Insulating material feeding tube
750: Pumping Liquid System
751: Mixed liquid feed tube
752: Water storage drum
753: Drum for storing mixed liquid
760: Nozzles
761: Mixture jet jet
762: Mixed liquid in sprayed state
763: Spray state in which fibrous insulating material and mixed liquid are injected simultaneously and mixed

Claims (14)

A primer layer applied to the inside surface of the building requiring insulation;
A hard urethane insulating layer formed on the primer layer using a urethane injection system;
A primer layer applied on the hard urethane heat insulating layer;
A natural fibrous insulation layer formed on the primer layer using a fiber injection system,
And a finish layer applied on the natural fibrous insulating layer,
The natural fibrous insulating layer is formed by simultaneously spraying and mixing the natural fibrous insulating material and the mixed liquid using the fibrous injection system,
The natural fibrous insulating material is a mixture of 80% by weight of the whole of the recycled pulp made of recycled newsprint paper, 13.5% by weight of boric acid as the refractory admixture, and 6.5% by weight of borax as the other refractory admixture ≪ / RTI >
The mixed solution is composed of a liquid in which 35% by weight of water-soluble acrylic resin and 65% by weight of water are mixed based on the concentration,
The mixing ratio of the natural fiber insulation and the mixture is in a ratio of 16 kg of the mixed liquid to 210 kg of the natural fiber insulation, and a ratio of 1: 312.5 ~ 343.75)
Wherein the natural fibrous insulating layer has a density of 0.03 to 0.05 g / cm3, a thermal conductivity of 0.033 to 0.035 W / mK, and a thickness of 30 to 60 mm. delete The method according to claim 1,
The hard urethane heat insulating layer is prepared by mixing and spraying polyol and MDI, which are the materials of the hard urethane heat insulating layer, at a volume ratio of 1: 1 at the same time by using the urethane injection system,
The urethane injection system was pumped by a drum of Polyol and MDI, respectively, and transferred to a long hose equipped with hot wire.
High pressure compressed air or an airless metering device,
Wherein the hard urethane heat insulating layer has a density of 0.03 to 0.06 g / cm 3, a thermal conductivity of 0.020 to 0.024 W / mK and a thickness of 50 mm to 110 mm. delete delete The method according to claim 1,
Wherein the primer used in the primer layer applied to the base surface and the primer layer applied on the hard urethane thermal insulation layer is a liquid in which 35 wt% of water-soluble acrylic resin and 65 wt% of water are mixed, based on the concentration, Insulation structure. delete The method according to claim 1,
[0030] In the above-described multi-layered thermal insulation structure,
Wherein the thickness of the rigid urethane heat insulating layer is from 90 mm to 100 mm, the thickness of the natural fibrous heat insulating layer is from 50 mm to 60 mm, the thickness of the entire multilayer insulation layer is from 140 mm to 150 mm, and the heat transmission rate is 0.18 W / The method according to claim 1,
Wherein the floor of the floor of the lowest living room of the building is used for heat insulation construction of the multi-
Wherein the thickness of the hard urethane heat insulating layer is 50 mm to 60 mm, the thickness of the natural fibrous heat insulating layer is 30 mm to 40 mm, the thickness of the entire multilayer insulation layer is 80 mm to 90 mm and the heat transmission rate is 0.29 W / m 2 K or less. The method according to claim 1,
[0030] In the above-described multi-layered thermal insulation structure,
Wherein the thickness of the hard urethane heat insulating layer is from 100 mm to 110 mm, the thickness of the natural fibrous heat insulating layer is from 50 mm to 60 mm, the thickness of the entire multilayered insulation layer is from 150 mm to 160 mm, and the heat transmission rate is 0.18 W / delete delete delete delete

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