KR102242117B1 - Quasi-noncombustible heat-insulating composite board - Google Patents

Abstract

The present invention relates to a semi-noncombustible composite insulating plate, the composite end plate according to the present invention is a polyisocyanurate (PIR: polyisocyanurate) foam board; It is composed of 40 to 65% by weight of inorganic filler including calcium carbonate, talc, and zinc oxide laminated on the inner and outer surfaces of the polyisocyanurate foam board and 35 to 60% by weight of vinyl chloride resin, and the average of discontinuous independent cells Calcium carbonate-based foam insulation board having a particle diameter of 0.3 to 3.0 mm; And an inorganic adhesive layer between the polyisocyanurate foam board and the calcium carbonate foam insulation board: the thickness of the calcium carbonate foam insulation board is 5 to 30mm, and the above calcium carbonate foam insulation board: the thickness ratio of the polyisocyanurate foam board A 1:10-20, and the semi-non-combustible composite insulation board according to the present invention can be attached by installing an insulation material on the formwork without using fasteners, etc., or by directly pouring and attaching it to the formwork when placing concrete. In addition to being able to construct, it satisfies the requirements as a semi-noncombustible material (KS F ISO 5660-1, KS F 2271) stipulated in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport. I can.

Description

Semi-incombustible composite insulation board {QUASI-NONCOMBUSTIBLE HEAT-INSULATING COMPOSITE BOARD}

The present invention relates to a semi-non-combustible composite insulating plate, and more particularly, to a semi-non-combustible composite insulating plate in which a calcium carbonate-based foam insulating plate is bonded to the inner and outer surfaces of a polyisocyanurate (PIR) foam plate with an inorganic adhesive. As a result, it is useful as an insulation plate for building structures or various industrial facilities, especially as an external insulation plate.

In recent years, as an insulation construction method to reduce heat loss due to heating or cooling, external insulation construction of buildings in which an insulation layer is installed on the outer shell of buildings is widely practiced. It is known to be efficient and optimal for reducing energy loss through thermal bridge blocking.

As a heat insulating plate used for such external insulation construction, excellent plaster finish, light weight, heat insulation, moisture resistance, and flame retardancy are required.

Conventionally, such insulation plates include glass fiber press plates, beads expanded polystyrene foam (EPS) or extruded polystyrene foam (XPS), rigid polyurethane foam (PUR) having a linear structure, and polyisocyanus having a ring structure. PIR (polyisocyanurate) and phenolic foam (PF) are mentioned. Among them, EPS, XPS and PUR are lightweight and have the advantage of excellent heat insulation, water resistance, moisture permeability, and compressibility, but a flame retardant material that is vulnerable to fire ( Flame retardant grade 3), and has a problem of generating toxic gases in case of fire, and PIR has relatively improved deformation stability and flame retardancy due to improved physical and chemical stability compared to PUR, but similarly, it emits harmful gases during combustion. There is a problem, and PF has the advantage of being semi-non-combustible and excellent in insulation, but it is vulnerable to moisture, is relatively expensive, and has inferior workability, low tensile strength, and releases formaldehyde, a carcinogen, because foreign materials such as aluminum sheets are attached to the surface. There is a problem that it can be done, and the glass fiber press plate has a disadvantage that it is easy to contain moisture due to its weak water resistance, and in this case, the thermal insulation property is inferior. In addition, since it is a carcinogen, it is not desirable in terms of environmental protection and harmfulness to the human body.

According to the energy-saving design standards, amendments to building the case already Midland House of Commons as well, and also mandates the use of more insulation bead Legalist rating criteria 190mm, beyond the passive building a yeolgwanryuyul 0.15 W / m ^{2 ·} K in zero-energy buildings starting in 2025 Since it is mandatory, the demand for external insulation boards is expected to increase further in the future.

On the other hand, according to the enforcement decree of the Building Act, it is mandatory to use only non-combustible materials (flame retardant grade 1) or semi-incombustible materials (flame retardant grade 2) as exterior materials for buildings with six or more stories, which will soon be expanded to buildings with three or more stories.

Semi-incombustible materials specified in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport are the Korean Industrial Standard KS F ISO 5660-1 [Combustion performance test-Heat emission, smoke generation, mass reduction rate-Part 1: Heat emission rate (cone calorimeter method)] The total heat release rate for 10 minutes after the start of the heating test according to the following conditions is 8 MJ/㎡ or less, and the maximum heat release rate for 10 minutes does not exceed 200 kW/㎡ continuously for 10 seconds or more, and fires harmful cracks penetrating the specimen after heating for 10 minutes, There should be no holes or melting (including all melting and extinguishing of the core material in the case of composite materials), and the result of gas toxicity test in Korean Industrial Standard KS F 2271, that the average stop time of the experimental rats should be 9 minutes or longer. Are demanding.

However, with the recent establishment of stronger insulation standards and fire standards than any other country, flame-retardant materials other than semi-incombustible materials, which have been widely used in the past, have become difficult to use as external insulation materials in buildings of a certain size. PF (brand name Z:IN) with an aluminum thin plate of about mm on the inner and outer surfaces and EPS (brand name zero-pole board) coated with a non-combustible material are commercially available. Since foreign materials such as polypropylene are attached, there is a problem that workability is inferior, tensile strength is low, and formaldehyde, which is a carcinogen, can be released. EPS coated with non-combustible material is an organic material, so it has inferior bonding to the finishing material and is flame-retardant when cutting. There is a problem that the uneven cross-section is exposed, and there is a concern that the non-flammable coating may be denatured by moisture such as rain or humidity.

A typical conventional technique for a semi-non-combustible insulating plate as a single plate instead of a composite plate is as follows.

Registered Patent Publication No. 10-1792186 (registered on October 25, 2017) includes 100 parts by weight of a resol-type phenolic resin; 5 to 15 parts by weight of expanded graphite; 5 to 15 parts by weight of a flame retardant; 1 to 20 parts by weight of a foaming agent; 1 to 20 parts by weight of a foaming agent; 1 to 30 parts by weight of an acid hardener; 1 to 12 parts by weight of at least one plasticizer selected from polyester polyol, polyether polyol, glycols, triphenyl phosphate, dimethyl terephthalate, and dimethyl isophthalate; It has been proposed an external insulation for PF construction made by foaming and curing a semi-non-combustible resin composition comprising 1 to 10 parts by weight of an inorganic filler made of aluminum hydroxide or calcium carbonate.

Registered Patent Publication No. 10-1563649 (registered on October 21, 2015) relates to 100 parts by weight of polystyrene resin, 15 to 25 parts by weight of expanded graphite, 15 to 25 parts by weight of aluminum hydroxide, ferric oxide: 5 to 15 parts by weight, 5-10 parts by weight of a mixture of melamine resin and epoxy resin in a weight ratio of 1:2, zirconium 1-3 parts by weight, isopentane 3-8 parts by weight, γ-aminopropyltriethoxysilane 3-8 parts by weight, It proposes a semi-non-combustible expanded polystyrene composition as an interior and exterior material for construction comprising a composition comprising 5-10 parts by weight of a curing agent.

In addition, Patent Publication No. 10-1900038 (registered on September 12, 2018) is based on 100 parts by weight of polystyrene resin, 25 to 40 parts by weight of alkali silicate; 5 to 15 parts by weight of aluminum metaphosphate; 20 to 25 parts by weight of hydrolyzed ethyl silicate; 10 to 15 parts by weight of silica aerogel; 10 to 15 parts by weight of rubber latex; And 10 to 20 parts by weight of a non-combustible filler containing at least two or more of aluminum silicate, perlite, tarc, kaolin, and aluminum hydroxide. Are proposing.

However, the interior and exterior materials for buildings according to the prior art have not been commercially available until now.

On the other hand, Registered Patent Publication No. 10-1211383 (registered on December 6, 2012) by the present applicant is a foam resin plate; It is composed of 40 to 65% by weight of inorganic filler including calcium carbonate, talc, and zinc oxide laminated on the surface of the above-described foamed resin plate, and 35 to 60% by weight of vinyl chloride resin, and the average particle diameter of the discontinuous independent cells is Inorganic foam plate of 0.3 to 3.0 mm; And an adhesive layer between the foamed resin plate and the inorganic foamed plate: the inorganic foamed plate has a thickness of 3 to 50 mm, and the inorganic foamed plate: an insulating composite plate having a thickness ratio of 1:1 to 20 of the foamed resin plate. It is being opened.

However, the above-described heat-insulating composite plate was not sufficiently satisfactory in terms of flame retardancy because EPS or PUR was used as a foamed resin plate, and an adhesive layer was an epoxy-based, rubber-based, or formaldehyde-based organic adhesive.

Registered Patent Publication No. 10-1792186 (registered on October 25, 2017) Registered Patent Publication No. 10-1563649 (registered on October 21, 2015) Registered Patent Publication No. 10-1900038 (registered on September 12, 2018) Registered Patent Publication No. 10-1211383 (registered on Dec. 6, 2012)

Therefore, the object of the present invention is to significantly improve the flame retardancy while maintaining the excellent general properties of the composite insulation plate described in Registered Patent Publication No. 10-1211383 by the applicant as a semi-noncombustible material prescribed in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport. It is to provide a semi-non-combustible composite insulation plate that meets the requirements.

According to a preferred aspect for smoothly achieving the above object of the present invention, a tensile strength of 0.08 ~ 0.22 N / mm ² Polyisocyanurate (polyisocyanurate: PIR) foam board; A discontinuous independent cell consisting of 40 to 65% by weight of an inorganic filler including calcium carbonate, talc, and zinc oxide and 35 to 60% by weight of a vinyl chloride resin laminated on the inner and outer surfaces of the above polyisocyanurate foam board. A calcium carbonate-based foam insulation board having an average particle diameter of 0.3 to 3.0 mm; And an inorganic adhesive layer between the polyisocyanurate foam board and the calcium carbonate foam insulation plate: the calcium carbonate foam insulation plate has a thickness of 5 to 30 mm, and the calcium carbonate foam insulation plate: polyisocyanurate The thickness ratio of the foam board is 1:10-20; The inorganic adhesive layer described above is harmless to the human body with a viscosity of 70,000 to 120,000 cps/25°C, consisting of 3 to 10% by weight of potassium silicate, 5 to 35% by weight of sodium silicate, 20 to 60% by weight of pencil stone, and the balance of water. It is formed by curing a one-component aqueous ceramic adhesive at 100° C. for 0.5 to 1 Hr or at room temperature for at least 7 days, and a semi-non-combustible insulating composite plate is provided.

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The above-described one-component water-based ceramic adhesive has a viscosity of 70,000-120,000 cps/25℃, a specific gravity of 1.39~1.52, a pot life at 25℃ of 40-60min, and a complete curing time at 100℃ of 0.5~ Curing at 1Hr or at room temperature is allowed to stand for at least 7 days so that moisture does not exist in the adhesive layer.

Meanwhile, the inorganic filler may be included in an amount of 25 to 35% by weight of calcium carbonate, 10 to 20% by weight of talc, and 5 to 10% by weight of zinc oxide based on the weight of the calcium carbonate-based foam insulating plate.

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The semi-non-combustible composite insulation board according to the present invention can be attached by installing an insulation material without the use of fasteners, etc., or by directly pouring and attaching an insulation material to the formwork when placing concrete, so excellent workability and construction without thermal bridges are possible, and mortar application , It has excellent workability and high economical efficiency as it is possible to perform exterior wall finishing work such as tile bonding construction with mortar interposed and stone bonding construction using mortar or epoxy adhesive directly on the insulation composite board without the use of anchor bolts, etc. As it meets the requirements as a semi-noncombustible material (KS F ISO 5660-1, KS F 2271) stipulated in the Ministry of Transportation Notice No. 2015-744, the exterior insulation of buildings such as apartments and officetels, roof insulation, and sports centers such as ice rink It can be applied to a wide range of fields such as floor insulation, reinforcement insulation, insulation for refrigeration and refrigeration facilities or refrigerated trucks, insulation and insulation of livestock such as pigs and barns, insulation of LPG or LNG or heavy oil tanks.

1 is a view showing a semi-non-combustible composite insulating plate according to the present invention.
2 is a diagram showing a semi-noncombustible material testing apparatus and method.
3 is a test report for the specimen of Comparative Example 1.
4 is a test report for the specimen of Comparative Example 2.
5 is a heating result diagram for a similar specimen of Comparative Example 2.
6 is a test report for the specimen of the example.
7 is a heating result diagram for a similar specimen of the example.
8 is a test report of a semi-non-combustible material for a calcium carbonate-based foam insulation plate applied to the semi-non-combustible composite insulation plate according to the present invention.
9 is a view showing a tensile strength meter used in the experimental example.
10 is a view showing a fracture state of a PIR specimen in an experimental example.

Hereinafter, the present invention will be described in detail.

As shown in Fig. 1, the semi-non-combustible heat-insulating composite board 1 of the present invention includes a polyisocyanurate foam board 12, calcium carbonate laminated on the inner and outer surfaces of the polyisocyanurate foam board 12, and Calcium carbonate-based foam insulation plate 11 consisting of 40 to 65% by weight of an inorganic filler including talc and zinc oxide and 35 to 60% by weight of a vinyl chloride resin and having an average particle diameter of 0.3 to 3.0mm of discontinuous independent cells; And an inorganic adhesive layer 13 between the polyisocyanurate foam board 12 and the calcium carbonate-based foam insulation plate 11, wherein the thickness of the calcium carbonate-based foam insulation plate 11 is 5 to 30 mm, The thickness ratio of the above-described calcium carbonate-based foam insulation plate 11: polyisocyanurate foam board 12 is 1:10-20.

The semi-noncombustible composite insulating plate 1 according to the present invention is lightweight and has high workability due to excellent bonding properties with dissimilar materials, has good mechanical properties and moisture resistance, as well as good workability.

As the foam board (core) 12 used in the semi-noncombustible insulating composite plate 1 according to the present invention, among organic insulating materials, PIR (thermal conductivity 0.019 W/m ² ·K) having relatively higher heat resistance than XPS, EPS or PUR; Typical tensile strength of 0.07~0.08 N/mm ² ; Total heat radiated for 10 minutes after heating without film 13 MJ/m ² ) and PF (thermal conductivity 0.019 W/m ² ·K; tensile strength 0.02 to 0.06 N/ mm ² ; Total heat released for 10 minutes after heating without a film was 12-13 MJ/m ² ).

Foam board (target core) External insulation plastering and finishing method required
Tensile strength level (N/mm ² ) Normally
Tensile strength (N/mm ² ) PIR (polyisocyanurate) 0.08 or more 0.07~0.08 PF (phenolic foam) 0.02~0.06

However, the semi-non-combustible thermal insulation composite plate using PF is a form in which an aluminum thin plate with a thickness of 0.2 mm (thermal conductivity 10 W/m ² ·K; total heat radiated for 10 minutes after heating is 1 MJ/m ² ) is bonded. Not only is it very difficult to attach the finishing material on the aluminum sheet forming the outer surface, but the tensile strength at the bonding interface ^{is only 0.01 N/mm 2} when constructing the mesh net, mortar and the finishing material, so that the aluminum sheet is removed from the PF. Even if the finishing material is attached using a fixing means, the tensile strength of the PF itself is 0.02~0.06 N/mm ² Since it is low enough, there is a high possibility that the PF itself may be fractured, and thus it is not suitable for the present invention.

Therefore, in consideration of the tensile strength aspect, PIR containing an isocyanurate ring by the trimerization reaction of isocyanate is selected as the core material, but the required amount of isocyanate that exactly matches the chemical equivalent of the polyol is about 105% (index 105). Excess isocyanate is used for the formation of polyisocyanurate, so it varies depending on the foaming rate, but the tensile strength is 0.08 to 0.22 N/mm ² within the index 220 to 350, specifically the tensile strength is 0.09 to 0.16 N/mm ² You can choose an appropriate PIR.

The calcium carbonate-based foam insulating plate 11 laminated on the inner and outer surfaces of the polyisocyanurate foam board 12 is substantially the same as the inorganic foam plate described in Patent Publication No. 10-1211383 by the present applicant, In the semi-non-combustible heat insulating composite plate 1 according to the present invention, although it is common that the calcium carbonate-based foam heat insulating plate 11 is laminated on the inner and outer surfaces of the polyisocyanurate foam board 12 as shown in FIG. 1, If necessary, laminated on only one surface of the polyisocyanurate foam board 12, or in some cases, a plurality of the above-described calcium carbonate-based foam insulation boards 11 and a plurality of polyisocyanurate foam boards 12 It goes without saying that the hawks may be stacked alternately and alternately stacked with each other, and this is also within the scope of the present invention.

The fire protection performance of the calcium carbonate-based foam insulation board (11) is shown in Table 2, which is a test according to the requirements of semi-incombustible materials (KS F ISO 5660-1, KS F 2271) stipulated in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport. Results, and Figure 8 is a test report for this.

Test Items standard Calcium carbonate foam insulation board Remark Semi-incombustible material Heat release rate Total calories released 8MJ/㎡ or less 3.3 1.9 2.8 Semi-noncombustible
Suitable Exceeding 200kW/㎡
Time(s) Do not exceed 200kW/㎡ continuously for 10s or more 0 0 0 Cracks, holes, melting, etc. penetrating the test material (including the core material in the case of composite materials) There won't be No No No Gas Hazard Mean Time to Stop Behavior in Rats
(min: sec) 9 min or more 14:32 13:10

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On the other hand, the inorganic adhesive layer 13 between the above-described polyisocyanurate foam board 12 and the calcium carbonate-based foam insulation plate 11 is 3 to 10% by weight of potassium silicate, specifically 7 to 9% by weight, sodium silicate 5 -35% by weight, specifically 7 to 15% by weight, 20 to 60% by weight of pencil stone, specifically 40 to 55% by weight, the balance is made up of water by curing a one-component aqueous ceramic adhesive that is harmless to the human body. Is formed.

The above-described one-component water-based ceramic adhesive exhibits excellent adhesion strength, heat resistance, water resistance, and adhesion workability.

The sodium silicate described above is used as a binder, and if it is less than 5% by weight, there is a concern that the adhesion may be weakened, and if it exceeds 35% by weight, the adhesion may decrease when exposed to moisture or moisture in the atmosphere. It is not preferable because the brittleness of the hardened layer becomes strong and there is a risk of breaking when bent.

In addition, the above-described potassium silicate is used as a phase stabilizer, and when it is less than 3% by weight, the effect on the phase stability is insignificant, and when it exceeds 10% by weight, it is not preferable because there is a concern that phase stability is rather impaired.

In addition, seokpilseok, classified as agalmatolite, functions as a viscosity modifier and non-combustible material, and if it is less than 20% by weight, the effect of increasing flame retardancy may be insufficient, and if it exceeds 60% by weight, the flow stability decreases due to excessive viscosity increase. It is not desirable because there is a concern.

On the other hand, if necessary, a water-soluble polymer emulsion such as polyvinyl alcohol, polyvinyl acetate, ethylene vinyl acetate, or acrylic emulsion may be used instead of water constituting the remainder, which is also within the scope of the present invention.

The above-described one-component water-based ceramic adhesive has a viscosity of 70,000 to 120,000 cps/25°C, a specific gravity of 1.39 to 1.52, a pot life of 40 to 60 min at 25°C, and a complete curing time at 100°C of 0.5 to It is 1Hr, and when it is cured at room temperature, it should be allowed to stand for at least 7 days, preferably about 1 month or longer to completely cure so that no moisture exists in the adhesive layer.

In the semi-non-combustible thermal insulation composite plate 1 according to the present invention, after mortar is applied to the constructed outer wall of concrete, a calcium carbonate-based foam plate is attached without the use of anchor bolts, and the finishing material is directly attached after applying the mortar without mesh bonding or mesh bonding. It is possible to perform finishing external insulation construction with high workability and workability for external walls.

If the necessity of using anchor bolts is eliminated, heating heat leakage due to thermal bridges caused by anchor bolts can be prevented, condensation on the surface of the finished exterior material can be prevented, as well as rainy seasons and rainy seasons. In the case of heavy rain such as a typhoon, moisture penetration through the path of the anchor bolt and the resulting rust can be eliminated at the source.

Moreover, the semi-non-combustible composite insulating plate 1 according to the present invention is used as a formwork by directing one side of the calcium carbonate-based foam plate 11 toward the concrete, and at the same time, the inner wall or the outer wall finish insulation material without the need to remove it after curing the concrete. Can be used immediately.

Hereinafter, the present invention will be described in more detail through Examples and Comparative Examples and Test Examples.

Comparative Example 1: Preparation of specimens and evaluation of semi-noncombustible materials

A 10-mm-thick semi-non-combustible calcium carbonate-based foam insulation board was bonded to the upper and lower surfaces of a 30-mm-thick PIR foam board (core) using a two-component epoxy adhesive. It was evaluated whether it satisfies the requirements as a semi-noncombustible material (KS F ISO 5660-1, KS F 2271) specified in No.

2 shows the heating apparatus and method, the torch gas opening was maximized, and the distance between the flame and the test object was kept at a distance of 15 cm, so that the flame radiant heat was exerted, and the heating time was 10 minutes, and the test report for the following results was shown. It is shown in 3.

<Evaluation result> NG (2018.10.29) Korea Institute of Construction Materials Test

1. Heat emission (semi-non-combustible standard 8MJ/m²: 13.8 / 13.3 / 16.3 (not suitable))

2. Heat release rate exceeding 200kW/m²: 0 (suitable)

3. Penetration of test object after test: None (appropriate)

4. Mean stop time of mouse behavior (standard; more than 9 minutes): 12:56 / 13:23 (appropriate)

Comparative Example 2: Preparation of specimens and evaluation of semi-noncombustible materials

Instead of the two-component epoxy adhesive in Comparative Example 1 to help improve flame retardancy, a one-component aqueous ceramic adhesive composed of 5% by weight of potassium silicate, 9% by weight of sodium silicate, 50% by weight of seokpilseok, and 36% by weight of water was used. After application, it was cured at room temperature for 2 days to prepare a specimen, and then it was evaluated whether the requirements as a semi-non-combustible material (KS F ISO 5660-1, KS F 2271) specified in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport were satisfied, and FIG. 4 Is the test report for the evaluation result.

<Evaluation result> NG (2019.03.28) Korea Institute of Construction Materials Testing

1. Heat dissipation (semi-non-combustible standard 8MJ/m²: 13.3 / 11.8 / 11.5 (not suitable))

2. Heat release rate exceeding 200kW/m²: 0 (suitable)

3. Penetration of test object after test: None (appropriate)

4. Mean stop time for mouse behavior (standard: more than 9 minutes): 13:02 / 12:47 (suitable)

The evaluation result showed a certain level of improvement compared to Comparative Example 1, and the improvement of flame retardancy by the inorganic adhesive layer was confirmed, but it did not reach the level of the semi-non-combustible material, and the calcium carbonate-based foam plate was cracked due to the expansion of the gas generated from the uncured adhesive layer. It was found that the amount of heat dissipated from the PIR foam board increased due to heat flow penetration through this crack.

On the other hand, Figure 5 is a result diagram for a similar specimen.

Example: Specimen Preparation and Evaluation

A specimen having the same adhesive layer as Comparative Example 2 was prepared, except that the room temperature curing days were set to 10 days in Comparative Example 2, and then a semi-non-combustible material (KS F ISO 5660-1) specified in Notification No. 2015-744 of the Ministry of Land, Infrastructure and Transport. , KS F 2271) was evaluated, and FIG. 6 is a test report for the evaluation result.

<Evaluation result> OK (2019.06.18) Korea Institute of Construction Materials Test

1. Heat release (semi-non-combustible standard 8MJ/m²: 7.0 / 7.4 / 7.0 (appropriate)

2. Heat release rate exceeding 200kW/m²: 0 (suitable)

3. Whether or not to penetrate the test body after the test: None (appropriate)

4. Mean stop time of mouse behavior (standard: more than 9 minutes): 14:44 / 14:22 (appropriate)

The specimens of the examples were found to be suitable as semi-non-combustible materials as there was no gas generation even after flame heating and no surface expansion or cracking occurred.

On the other hand, Figure 7 is a result diagram for a similar specimen.

Test Example: PIR tensile strength measurement

Using the PIR specimen (index 240; foaming magnification (volume increase of 12 times) as'PIR-1' and the PIR specimen (index 280; foaming magnification of 7 magnification) as'PIR-2', the apparatus shown in FIG. Tensile strength was measured using, and the results are shown in Table 3 below, and a fractured specimen is shown in FIG. 10.

Test piece Test force (KN) Specimen dimensions The tensile strength
(N/mm ² ) Remark Width(mm) Length(mm) Area (mm ² ) PIR-1 0.18 44 44 1936 0.093 Fracture PIR-2 0.30 44 44 1936 0.155 Fracture

The average tensile strength of the PIR-1 specimen was 0.093 N/mm², and the average tensile strength of the PIR-2 specimen was 0.155 N/mm². Therefore, when these PIR specimens were used as core materials, the European standard value of the external thermal insulation plastering method was 0.08N/ It was found to meet the requirement of mm² or more.

In the above, although the present invention has been described in detail, the present invention is not limited thereto, and various changes and modifications can be made therefrom by those skilled in the art, but this is also within the scope of the present invention.

1: Semi-non-combustible thermal insulation composite plate according to the present invention (1)
11: calcium carbonate-based foam insulation board 12: polyisocyanurate foam board
13: Inorganic adhesive layer

Claims (4)

Polyisocyanurate (PIR) foam board with a tensile strength of 0.08~0.22 N/mm ^2;
A discontinuous independent cell consisting of 40 to 65% by weight of an inorganic filler including calcium carbonate, talc, and zinc oxide and 35 to 60% by weight of a vinyl chloride resin laminated on the inner and outer surfaces of the above polyisocyanurate foam board. A calcium carbonate-based foam insulation board having an average particle diameter of 0.3 to 3.0 mm; And
It consists of an inorganic adhesive layer between the above-described polyisocyanurate foam board and the calcium carbonate-based foam insulation plate:
The thickness of the calcium carbonate-based foam insulation plate is 5 to 30 mm, and the thickness ratio of the calcium carbonate-based foam insulation plate: polyisocyanurate foam board is 1:10-20;
The inorganic adhesive layer described above is harmless to the human body with a viscosity of 70,000 to 120,000 cps/25°C, consisting of 3 to 10% by weight of potassium silicate, 5 to 35% by weight of sodium silicate, 20 to 60% by weight of pencil stone, and the balance of water. One component water-based ceramic adhesive, formed by curing 0.5 ~ 1Hr at 100 ℃ or at least 7 days at room temperature,
Semi-incombustible composite insulation board. delete The semi-non-combustible composite insulating plate of claim 1, wherein the inorganic filler is contained in an amount of 25 to 35% by weight of calcium carbonate, 10 to 20% by weight of talc, and 5 to 10% by weight of zinc oxide based on the weight of the calcium carbonate-based foam insulating plate. . delete

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