KR102558528B1 - A semi-nonflammable insulation material and manufacturing method for it - Google Patents

Abstract

The present invention relates to a semi-incombustible insulating material and a manufacturing method thereof, particularly a) a heat insulating material layer; b) A semi-noncombustible insulating material comprising a surface layer sequentially provided with a paper layer - a first aluminum sheet layer - a first glass mat layer - a flame retardant felt layer - a second glass mat layer - a second aluminum sheet layer on the surface of the insulating material layer.
According to the present invention, it is possible to provide a semi-noncombustible insulator having excellent thermal insulation properties, excellent waterproofness, significantly reducing the generation of harmful gases in the event of a fire, easy installation of a lightweight insulator, excellent strength, beautiful appearance, and excellent durability, and particularly excellent flame retardancy, which can be used as a filler for fire doors, and a method for manufacturing a semi-noncombustible insulator that can be manufactured with high productivity.

Description

A semi-nonflammable insulation material and manufacturing method for it

The present invention relates to a semi-noncombustible insulator and a method for manufacturing the same, and more particularly, to a semi-noncombustible insulator having excellent thermal insulation properties, excellent waterproofness, significantly reducing the generation of harmful gases in the event of a fire, easy installation of a lightweight insulator, excellent strength, a beautiful appearance, excellent durability, and particularly excellent flame retardancy, which can be used as a filler for fire doors, and a method for manufacturing a semi-noncombustible insulator that can be manufactured with high productivity. In addition, the present invention also relates to a fire door and a method for manufacturing a fire door using the semi-incombustible insulation.

The information described below merely provides background information related to the present invention and does not constitute prior art.

The indoor space is heated in winter and cooled in summer using an air conditioner, and since the increase in cooling and heating efficiency of the indoor space can be obtained through insulation, insulation construction using various insulation materials is being performed.

In particular, many casualties and property damage have occurred in recent large-scale fire accidents. In the case of this fire accident, it is pointed out that the cause of this fire accident was that the building's outer wall was constructed with insulation, adhesive mortar, and finishing materials without flame retardant and non-combustible performance, so the fire spread quickly and the damage increased further.

Accordingly, the government has significantly strengthened the fire safety standards for building finishing materials by revising the 'Rules on Standards for Evacuation/Fire Protection Structures of Buildings', which has been in force since April 2016.

Representative examples of insulation materials used in conventional insulation construction include styrofoam, foamed polyurethane, and foamed polyethylene. Among them, polyurethane series is widely used because it has the best thermal conductivity. However, in the case of polyurethane foam, which is widely used as a heat insulating material, it has many problems in use due to its high inflammability in the event of a fire and the generation of a large amount of toxic gas in the early stage of a fire.

Conventionally, phenolic foam insulation has been developed to provide excellent insulation, but in the case of phenolic foam insulation, strength is relatively weak and processing is not easy, so there is a limit to use alone in the field.

In addition, Korean Patent No. 1177383 discloses a method for manufacturing a fire-resistant composite material comprising forming an incombustible material on the front surface of an insulator and forming an aluminum foil on the front surface of the incombustible material and the back surface of the insulator. However, the method has a problem in that it does not satisfy the BS8414 test, which is an enhanced flame retardant performance test for fire-resistant composite materials, and improvement thereof is urgently requested.

Korean Patent No. 1177383

The present invention has been made to solve the problems of the prior art as described above, and has excellent insulation properties, excellent waterproofness, can significantly reduce the generation of harmful gases in the event of a fire, is easy to install, has excellent strength, and has a beautiful appearance. Its object is to provide a semi-noncombustible insulation that can be used as a filler for fire doors due to its excellent flame retardancy, and a method for manufacturing a semi-noncombustible insulation that can be manufactured with high productivity.

In addition, an object of the present invention is to provide a fire door with excellent flame retardancy, significantly reducing the generation of harmful gases in the event of a fire, excellent insulation, and excellent durability at the same time, and a method for manufacturing the same.

In order to solve these problems, the present invention

a) insulation layer 20;

b) The paper layer 11 - the first aluminum sheet layer 12 - the first glass mat layer 13 - the flame retardant felt layer 14 - the second glass mat layer 15 - The surface layer 10 provided with the second aluminum sheet layer 16 is provided sequentially on the surface of the heat insulating material layer 20.

The quasi-incombustible insulation 100 is characterized by including the surface layer 10 on both sides of the insulation layer 20.

The flame retardant felt layer 14 is a) graphite; b) a binder; c) sugar; and d) calcium carbonate; characterized in that the mixed solution is cured by coating.

The mixed solution is a) 100 parts by weight of graphite; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight sugar; and d) 10 to 60 parts by weight of calcium carbonate.

The mixed solution includes: i) 1 to 50 parts by weight of a toxic gas adsorbent; ii) 5 to 100 parts by weight of starch; iii) 10 to 60 parts by weight of hollow silica; iv) 10 to 60 parts by weight of sodium bicarbonate; and v) 50 to 200 parts by weight of water glass.

The semi-incombustible insulation 100 is characterized in that it is used as a filler for fire doors.

Also, the present invention

In the manufacturing method of the semi-noncombustible heat insulating material 100,

S1) preparing the heat insulating material layer 20;

S2) preparing the surface layer 10;

S3) combining the heat insulating material layer 20 and the surface layer 10;

Including,

The surface layer 10 is sequentially a paper layer 11 - a first aluminum sheet layer 12 - a first glass mat layer 13 - a flame retardant felt layer 14 - a second glass mat layer 15 - It provides a method for manufacturing a semi-noncombustible insulator, characterized in that it is a surface layer provided with a second aluminum sheet layer 16.

Preferably, the semi-incombustible insulation 100 includes the surface layer 10 on both sides of the insulation layer 20.

In the manufacturing method of the fire door,

It provides a method for manufacturing a fire door, characterized in that for filling the semi-incombustible insulation inside the outer frame of the fire door.

Also, the present invention

Provided is a fire door manufactured by the method for manufacturing a fire door described above.

According to the present invention, it is possible to provide a semi-noncombustible insulator having excellent thermal insulation properties, excellent waterproofness, significantly reducing the generation of harmful gases in the event of a fire, easy installation of a lightweight insulator, excellent strength, beautiful appearance, and excellent durability, and particularly excellent flame retardancy, which can be used as a filler for fire doors, and a method for manufacturing a semi-noncombustible insulator that can be manufactured with high productivity.

In addition, the present invention can provide a fire door that has excellent flame retardancy, can significantly reduce the generation of harmful gases in the event of a fire, has excellent insulation properties, and at the same time has excellent durability, and a manufacturing method thereof.

1 shows a schematic cross-sectional view of a quasi-incombustible insulation according to an embodiment of the present invention.
Figure 2 shows a schematic cross-sectional view of a semi-incombustible insulation according to another embodiment of the present invention.
Figure 3 shows a schematic diagram of a semi-noncombustible insulation manufacturing method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

Figure 1 shows a cross-sectional schematic diagram of a semi-noncombustible insulation according to an embodiment of the present invention, Figure 2 shows a cross-sectional schematic diagram of a semi-noncombustible insulation according to another embodiment of the present invention, Figure 3 is an embodiment of the present invention It shows a schematic diagram of a method for manufacturing a semi-noncombustible insulation according to an embodiment.

In the present invention, the isocyanate index means that the actual amount of polyisocyanate used is divided by the theoretically required stoichiometric amount of polyisocyanate necessary for the reaction of the polyol with active hydrogen in the reaction mixture, multiplied by 100. It can also be expressed as (Eq of NCO/Eq of active hydrogen) x 100.

The semi-noncombustible insulation 100 according to the present invention

a) insulation layer 20;

b) The paper layer 11 - the first aluminum sheet layer 12 - the first glass mat layer 13 - the flame retardant felt layer 14 - the second glass mat layer 15 - The surface layer 10 provided with the second aluminum sheet layer 16 in order on the surface of the heat insulating material layer 20.

The semi-noncombustible insulation 100 according to the present invention

In the manufacturing method of the semi-noncombustible heat insulating material 100,

S1) preparing the heat insulating material layer 20;

S2) preparing the surface layer 10;

S3) combining the heat insulating material layer 20 and the surface layer 10;

Including,

The surface layer 10 is sequentially formed by the paper layer 11 - the first aluminum sheet layer 12 - the first glass mat layer 13 - the flame retardant felt layer 14 - the second glass mat layer 15 - The second aluminum sheet layer 16.

Preferably, the semi-incombustible insulation 100 of the present invention includes the surface layer 10 on both sides of the insulation layer 20. In this case, the flame retardancy is remarkably excellent, so it can be usefully used as a filler for fire doors.

In the present invention, the paper layer 11 is included to bond the first aluminum sheet layer 12 and the heat insulating material layer 20, and an adhesive is applied to both sides of the paper. The first aluminum sheet layer 12 and the heat insulating material layer 20 are coupled through the paper layer 11 .

In the present invention, the first aluminum sheet layer 12 and the second aluminum sheet layer 16 may be a known aluminum sheet used for semi-noncombustible insulation.

In the present invention, the first glass mat layer 13 and the second glass mat layer 15 may be a known glass mat used for a semi-incombustible heat insulating material.

In the present invention, the first aluminum sheet layer 12 and the first glass mat layer 13 and the second glass mat layer 15 and the second aluminum sheet layer may be bonded through a known method. For example, they may be bonded through fusion, or an inorganic adhesive may be used. As an example of a rescue chuck, it can be heat-sealed with PET during fusion.

Preferably, in the present invention, the flame retardant felt layer 14 is a) graphite; b) a binder; c) sugar; and d) calcium carbonate; the mixture of the coating is cured.

The combination of the flame retardant felt layer 14, the first glass mat layer 13, and the second glass mat layer 15 may be performed by coating the mixed solution on the first glass mat or the second glass mat and bonding the uncoated glass mat before curing, and then curing the mixed solution, or by coating the mixed solution on each glass pat, positioning the coated surfaces facing each other before curing, and then curing and bonding.

The mixed solution is a) 100 parts by weight of graphite; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight sugar; and d) preferably 10 to 60 parts by weight of calcium carbonate. In this case, it has excellent insulation properties, excellent waterproofness, can significantly reduce the generation of harmful gases in the event of a fire, and is easy to install a light-weight insulation material, has excellent strength, has a beautiful appearance, and has excellent durability at the same time. In particular, it has remarkably excellent flame retardancy.

In the mixture, a) graphite; b) a binder; c) sugar; known materials used in semi-incombustible insulation materials may be used, and specifically, the b) binder may be acrylic, epoxy, urethane, or silicone, preferably water-based acrylic. In this case, it has excellent compatibility with sugar and water glass, has excellent flame retardancy, excellent waterproofness, excellent heat insulation, is easy to install the heat insulating material due to its light weight, has excellent strength, has a beautiful appearance, and has excellent durability.

The d) calcium carbonate may be conventionally known calcium carbonate, and may be included in an amount of 5 to 100 parts by weight based on 100 parts by weight of graphite in the mixture. In this case, it has excellent flame retardancy, excellent waterproofness, can significantly reduce the generation of harmful gases in the event of a fire, has excellent thermal insulation properties, is easy to install a lightweight insulation material, has excellent strength, has a beautiful appearance, and at the same time, it is possible to provide a quasi-noncombustible insulation material with excellent durability.

In addition, the mixed solution includes: i) 1 to 50 parts by weight of a toxic gas adsorbent; ii) 5 to 100 parts by weight of starch; iii) 10 to 60 parts by weight of hollow silica; iv) 10 to 60 parts by weight of sodium bicarbonate; and v) 50 to 200 parts by weight of water glass.

The above i) to v) may be included in the mixed solution alone or two or more may be included at the same time.

The toxic gas adsorbent i) is an oxide or complex of a transition metal; or activated carbon or zeolite; may be included alone or simultaneously. preferably at the same time oxides or complexes of transition metals; and activated carbon or zeolite at the same time.

The transition metal may be one of the elements of groups 4 to 7 and groups 3 to 12 in the periodic table, and is preferably one or more selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, nb, Mo, Tc, Ru, Rh, Pd, Ag, and Cd.

A known oxide or complex of the transition metal may be used as the oxide or complex of the transition metal, and specific examples thereof may include Cu ₂ O, CuO, CeO ₂ , Co ₃ O ₄ , PdO or SeO ₂ , but are not limited thereto.

The toxic gas adsorbent can absorb toxic gases such as HCN, CO, HCl, HBr, HF, CO ₂ and NOx generated from the insulation layer in case of fire to reduce the diffusion of toxic gases to the outside of the semi-noncombustible insulation. In particular, it is possible to significantly reduce human damage caused by toxic gases by preventing the diffusion of HCN gas, which is fatal to the human body.

The ii) starch may be corn starch or potato starch as a specific example, but is not limited thereto.

The iii) hollow silica is preferably a closed type without pores on the surface, preferably hollow silica having a diameter of 10 to 120 microns, apparent specific gravity of 5 to 20 Kg/m3, or true density of 125 to 300 Kg/m3. It is good to use. In addition, known sodium bicarbonate may be used as the iv) sodium bicarbonate.

For the v) water glass, known water glass may be used.

Preferably, the flame retardant felt layer 14 has a thickness of 0.5 to 10 mm. If it is within the above range, it has excellent flame retardancy, excellent waterproofness, can significantly reduce the generation of harmful gases in the event of a fire, has excellent thermal insulation properties, is easy to install a lightweight insulation material, has excellent strength, and has a beautiful appearance.

In the present invention, a known heat insulating material may be used as the heat insulating material used as the heat insulating material layer 20, and specific examples thereof may include foamed urethane, foamed polyurea, urethane foam, foamed polyisocyanurate, foamed polystyrene, bead method foamed styrene, extruded foamed styrene, foamed styrofoam, foamed ethylene, and foamed propylene, or a mixture of one or two of them.

Preferably, the heat insulating material layer 20 is (a) polyester polyol; (b) a trimerization catalyst; (c) a urethane catalyst; (d) a blowing agent; and (e) polyisocyanate, and is a foam obtained by foaming a foaming composition having an isocyanate index of 150 to 700.

Preferably, the foaming composition includes (a) 100 parts by weight of the polyester polyol; (b) 0.1 to 10 parts by weight of a trimerization catalyst; (c) 0.1 to 10 parts by weight of a urethane catalyst; (d) It is preferable to include 1 to 30 parts by weight of a foaming agent.

More specifically, the polyester polyol is

(S1) preparing terephthalic acid (TPA);

(S2) in the TPA a) MEG (monoethylene glycol) or DEG (diethylene glycol); and b) mixing PEG (polyethylene glycol) having a molecular weight of 150 to 600;

(S3) raising the temperature of the mixture of step S2) using an esterification catalyst to condensate until the acid value is 1.5 mgKOH/g or less;

(S4) cooling the reactant of step S3);

It can be manufactured including.

In the step (S1), the present invention uses terephthalic acid (TPA) as an acid component.

The step (S2) may include a) monoethylene glycol (MEG) or diethylene glycol (DEG) in the TPA; and b) mixing PEG (polyethylene glycol) having a molecular weight of 150 to 600.

The a) monoethylene glycol (MEG) or diethylene glycol (DEG) may be mixed in a ratio of 1: 1.1 to 1.8 with respect to 1 mole of the TPA. It is preferably mixed to be 1: 1.2 to 1.7. In this case, flame retardancy can be imparted to the heat insulating material layer 20, and polyester polyol having excellent storability can be manufactured.

In addition, the PEG (polyethylene glycol) having a molecular weight of 150 to 600 is mixed at a molar ratio of 1:0.1 to 0.4 with respect to 1 mole of the TPA, preferably 1:0.1 to 0.2. In this case, flame retardancy can be imparted to the heat insulating material layer 20, and polyester polyol having excellent storage stability at room temperature and compatibility with other components can be prepared.

In the step (S3), the temperature of the mixture in the step (S2) is raised using an esterification catalyst to perform a condensation reaction until the acid value is 1.5 mgKOH/g or less. Specifically, butyl hydroxyoxo tin or tetra-n-butyl titanate may be used as the catalyst, preferably butyl hydroxyoxo tin. Water produced through the vacuum dehydration process can be removed, and preferably, the step S3) is condensed until the acid value of the reactant is 1.0 mgKOH / g or less, specifically 0.5 to 1.0 mgKOH / g. In this case, a polyester polyol having excellent storage stability and compatibility with other components can be prepared.

Then, the polyester polyol of the present invention is prepared through the step of cooling the reactant.

Preferably, in the present invention, the step of mixing the flame retardant by cooling the reactant of the (S3) step of the (S3-1) step to 50 to 100 ° C. may be further included. Specifically, the flame retardant in the (S3-1) step is preferably mixed in 5 to 40 parts by weight based on 100 parts by weight of the reactant, and specifically, the flame retardant in the (S3-1) step may be one or more selected from the group consisting of TCPP (tris (chloropropyl) phosphate), TECP (tris (2-chloroethyl) phosphate), TEP (triethyl phosphate, TPP (tripropyl phosphate), and DMMP (dimethyl methylphosphonate). In this case, Flame retardancy can be imparted to the material layer 20, and polyester polyol with excellent storability can be produced.

Also preferably, 0.1 to 0.3 mol of a) MEG (monoethylene glycol) or DEG (diethylene glycol) in step (S1) may be independently replaced with TMP (trimethylolpropane), glycerine, TEOA (triethanol amine), PE (pentaerithritol), and more preferably, the TMP (trimethylolpropane), glycerine, TEOA (triethanol amine), PE (pentaerithritol) erithritol) is preferably mixed independently in a molar ratio of 0.1-0.2: 0.1-0.2: 0.1-0.2: 0.2-0.3. In this case, more excellent flame retardancy can be imparted to the heat insulating material layer 20, and polyester polyol having excellent storability at room temperature can be manufactured.

The polyester polyol prepared by the above production method may have a viscosity of 3,000 to 50,000 cps liquid at room temperature, and an OHV of 100 to 300 mgKOH/g. Preferably, the polyester polyol does not crystallize within one week at room temperature.

In the present invention, a known trimerization catalyst may be used as the trimerization catalyst (b), and a commercially available trimerization catalyst may be used, of course. As a specific example, potassium octoate may be used, but is not limited thereto.

In the present invention, as the (c) urethane catalyst, a known urethane catalyst may be used, and a commercially available urethane catalyst may be used, of course. As a specific example, tributylamine or pentamethyldiethylenetriamine may be used, but is not limited thereto.

In the present invention, (d) a known foaming agent may be used as the foaming agent, and of course, a commercially available foaming agent may be used. Specific examples may include HCFC-141b, HFC-365mfc/227, HFC-245fa, HFO-1234ze (E), HFO-1234ze (F), and HFO-1336mzz (Z), and cyclo-pentane, n-pentane, iso-pentane, etc. may be used, but is not limited thereto.

In the present invention, the (e) polyisocyanate may be a known polyisocyanate or a commercially available polyisocyanate. Specific examples include, but are not limited to, toluene diisocyanate (TDI), polymeric methylene diphenyl diisocyanate (Polyemric MDI) having a liquidus viscosity of 50-1,000 cps at 25 ° C., hexamethylene diisocyanate, isophorone diisocyanate, phenylene diisocyanate, hydrated MDI or 1,5-naphthalene diisocyanate.

In the present invention, the (e) polyisocyanate is preferably included so that the isocyanate index is 150 to 700. In this case, flame retardancy is excellent due to appropriate trimming, generation of harmful gases can be remarkably reduced in the event of a fire, excellent heat insulation, easy installation of a light-weight insulation, advantageous for thinning, excellent durability, and excellent strength.

In addition, in the present invention, the foaming composition may further include known additives that may be commonly included in foaming compositions such as cell stabilizers, flame retardants, chain extenders, epoxy resins, acrylic resins, fillers or pigments. Each of the additives may be independently used in an amount known in the art within the range of 0.01 to 40 parts by weight based on 100 parts by weight of the polyester polyol.

Preferably, the foaming composition may further contain at least one material selected from the group consisting of graphite, graphene, carbon nanotubes, fullerene, expandable graphite, aluminum oxide hydrate, antimony trioxide, arsenic oxide, ammonium polyphosphate and calcium sulfate, each independently in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of polyester polyol.

In the present invention, the components other than (e) polyisocyanate in the foaming composition may be premixed first, and then (e) polyisocyanate may be mixed and foamed.

In the present invention, the insulating material layer 20 may be prepared by foaming the foaming composition in a foaming container.

The foam container may be arbitrarily adjusted according to the size of the insulating material to be manufactured.

In the present invention, the foam after the foaming step may have an interior portion of polyisocyanurate (PIR) made of trimerization, and a surface layer of PUR (polyurethane) without trimerization.

In addition, if necessary, a PUR removal step of removing PUR located on the surface of the heat insulating material layer 20 may be further included. A method of removing the PUR is not particularly limited, and as a specific example, the PUR on the surface may be removed with a grinder. When PIR/PUR has a curved interface, it is recommended to perform grinding so that all of the PUR can be removed. More specifically, the thickness removed by the grinding may be 1 to 10 mm. In this case, by leaving only PIR with excellent flame retardancy in the heat insulating material layer 20, it is possible to manufacture a semi-nonflammable heat insulating material 100 having more excellent flame retardancy.

Preferably, the heat insulating material layer 20 may have a thermal conductivity of 0.020 to 0.026 W/m.K after 175 days. In this case, it may have flame retardancy and excellent heat insulating properties.

In addition, in the semi-incombustible insulation 100 of the present invention, the insulation layer 20 may have an absorption of 1 g/100 cm ² or less. In this case, it is possible to fundamentally solve the problem of the decrease in thermal conductivity and the problem of metal corrosion due to the high water absorption (4 g / 100 cm ² or more) of the conventional phenolic foam insulation.

In addition, the semi-noncombustible insulation 100 of the present invention is a semi-noncombustible material performance in all tests according to gas hazard test (test method KS F 2271), heat release rate test (test method KS F ISO 5660-1) and BS-8414 regulations. It has characteristics that can be satisfied.

According to the present invention, it is possible to provide a semi-noncombustible insulator having excellent thermal insulation properties, excellent waterproofness, significantly reducing the generation of harmful gases in the event of a fire, easy installation of a lightweight insulator, excellent strength, beautiful appearance, and excellent durability, and particularly excellent flame retardancy, which can be used as a filler for fire doors, and a method for manufacturing a semi-noncombustible insulator that can be manufactured with high productivity.

Also, the present invention

In the manufacturing method of the fire door,

It provides a method for manufacturing a fire door, characterized in that for filling the semi-incombustible insulation inside the outer frame of the fire door.

Also, the present invention

Provided is a fire door manufactured by the method for manufacturing a fire door described above.

The fire door and method of manufacturing the fire door of the present invention is to use the semi-incombustible insulation 100 as a filler in the outer frame of the fire door in the known fire door and method of manufacturing the fire door. The fire door using the semi-incombustible insulation 100 has excellent flame retardancy, can significantly reduce the generation of harmful gases in the event of a fire, has excellent insulation properties, and at the same time has excellent durability.

Examples of specific manufacturing of the surface layer 10 according to the present invention are as follows.

Example 1 a) 100 parts by weight of graphite; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight sugar; and d) 10 to 60 parts by weight of calcium carbonate to prepare a mixed solution. After heat-sealing the first aluminum sheet and the first glass mat with PET, the mixed solution was coated to a thickness of 1 to 2 mm on the surface of the first glass mat. After heat-sealing the second aluminum sheet and the second glass mat with PET, the mixed solution was coated to a thickness of 1 to 2 mm on the surface of the second glass mat. Before the coated liquid mixture was hardened, the coating layer of the mixed liquid was placed between the first glass mat and the second glass mat so that the coating layer of the mixed liquid faced each other and was cured. Paper was bonded to the surface of the first aluminum sheet using an adhesive to prepare a surface layer 10 having a paper layer - a first aluminum sheet layer - a first glass mat layer - a flame retardant felt layer - a second glass mat layer - a second aluminum sheet layer.

In addition, after mixing 1.26 moles of DEG and 0.35 moles of PEG200 with 1 mole of terephthalic acid in a molar ratio, 300 ppm of butyl hydroxyoxotin was added, and the mixture was heated to 190 ° C for 3 hours, then heated to 200 ° C for 1 hour, then heated to 220 ° C and heated for 2 hours, then held under reduced pressure of 100 mmHg for 20 minutes. After maintaining the reduced pressure of 300 mmHg for 30 minutes, dehydration was performed under reduced pressure of 600 mmHg until the acid value reached 1.0 mgKOH/g, and then cooled to prepare a heat insulating material layer using the prepared polyester polyol.

A semi-incombustible insulation was prepared by combining the insulation layer as shown in FIG. 1 using an adhesive to the paper of the prepared surface layer.

In Example 2, after preparing a mixed solution further comprising 1 to 50 parts by weight of a toxic gas adsorbent in Example 1, the mixed solution was prepared, and then the surface layer was formed in the same manner as in Example 1. A semi-incombustible insulation was prepared in the same manner as in Example 1.

In Example 3, the mixed solution in Example 1 was prepared in the same manner as in Example 1 except that the surface layer was formed in the same manner as in Example 1 after preparing a mixed solution further containing 5 to 100 parts by weight of cornstarch. A semi-incombustible insulation was prepared.

In Example 4, a surface layer was formed in the same manner as in Example 1 after preparing a mixture solution further comprising 50 to 200 parts by weight of water glass and 5 to 100 parts by weight of cornstarch in Example 1, and then forming the surface layer. A semi-incombustible insulation was prepared in the same manner as in Example 1.

In Example 5, in Example 1, the mixed solution further includes 50 to 200 parts by weight of hollow silica and f) 5 to 100 parts by weight of cornstarch, and then the surface layer is formed in the same manner as in Example 1. A semi-incombustible insulation was prepared in the same manner as in Example 1, except that.

In Example 6, a semi-incombustible insulation was manufactured in the same manner as in Example 1, except that the insulation layer prepared in Example 1 and the surface layer were combined as shown in FIG.

In Example 7, a semi-incombustible insulation was manufactured in the same manner as in Example 1, except that the insulation layer prepared in Example 2 and the surface layer were combined as shown in FIG.

In Example 8, a semi-incombustible insulation was manufactured in the same manner as in Example 1, except that the insulation layer prepared in Example 4 and the surface layer were combined as shown in FIG.

In Comparative Example 1, polyurethane was used as the heat insulating material layer in Example 1, a nonwoven fabric obtained by heat-sealing glass mat with PET was used as the surface layer, and calcium carbonate was not used in the mixed solution. An insulating material was prepared in the same manner as in Example 1.

The flame retardancy properties of the insulating materials of Examples 1 to 8 and Comparative Example 1 were measured and are shown in Table 1 below.

If the performance of the semi-incombustible material is satisfied, it is marked with '○', and if it is not satisfied, it is marked with 'X'.

- Gas toxicity test: test method KS F 2271

- Heat release rate test: test method KS F ISO 5660-1

division Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 gas toxicity test ○ ○ ○ ○ ○ ○ ○ ○ × Heat release rate test ○ ○ ○ ○ ○ ○ ○ ○ ×

As shown in Table 1, all of the examples of the present invention exhibited flame retardant properties of semi-noncombustible materials, but Comparative Example 1 did not exhibit flame retardant properties at all.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also within the scope of the present invention.

Claims (9)

a) a layer of insulation;
b) a surface layer comprising a paper layer - a first aluminum sheet layer - a first glass mat layer - a flame retardant felt layer - a second glass mat layer - a second aluminum sheet layer sequentially on the surface of the heat insulating material layer;
The flame retardant felt layer is a) graphite; b) a binder; c) sugar; And d) calcium carbonate; the mixture of the coating is cured,
The mixed solution is a) 100 parts by weight of graphite; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight sugar; d) 10 to 60 parts by weight of calcium carbonate; and e) 1 to 50 parts by weight of i) a toxic gas adsorbent; ii) 5 to 100 parts by weight of starch; iii) 10 to 60 parts by weight of hollow silica; iv) 10 to 60 parts by weight of sodium bicarbonate; and v) 50 to 200 parts by weight of water glass; at least one material selected from the group consisting of;
A semi-noncombustible insulation material comprising a. According to claim 1,
The semi-incombustible insulation is a semi-incombustible insulation, characterized in that it comprises the surface layer on both sides of the insulation layer. delete delete delete According to claim 1,
The semi-noncombustible insulation is a semi-noncombustible insulation, characterized in that used as a filler for fire doors. In the manufacturing method of the semi-noncombustible insulation,
S1) preparing a heat insulating material layer;
S2) preparing a surface layer;
S3) combining the heat insulating material layer and the surface layer;
Including,
The surface layer is a method for producing a semi-noncombustible heat insulating material, characterized in that the surface layer of claim 1. In the manufacturing method of the fire door,
A method for manufacturing a fire door, characterized in that the quasi-incombustible insulation according to claim 1 is filled inside the outer frame of the fire door. A fire door manufactured by the method for manufacturing a fire door according to claim 8.