KR20210088450A - A semi-nonflammable insulation material and manufacturing method for it - Google Patents

Abstract

The present invention relates to a semi-non-combustible insulation material and a manufacturing method thereof. More specifically, the semi-non-combustible insulation material comprises: (a) an insulating material layer; and (b) a surface layer having a paper layer, a first aluminum sheet layer, a first glass mat layer, a flame retardant felt layer, a second glass mat layer, and a second aluminum sheet layer sequentially provided on a surface of the insulating material layer. According to the present invention, the present invention can provide the semi-non-combustible insulation material, and a manufacturing method of the semi-non-combustible insulation material of which productivity can be increased, wherein the semi-non-combustible insulation material has excellent thermal insulation properties, has excellent waterproof properties, can significantly reduce generation of harmful gases in an event of a fire, is lightweight and easy to be installed, has excellent strength, has beautiful appearance, has excellent durability, and more specifically, has significant flame retardancy to be used as a filling material of a fire door.

Description

A semi-nonflammable insulation material and manufacturing method for it

The present invention relates to a semi-non-combustible insulating material and a method for manufacturing the same, and more particularly, it has excellent thermal insulation properties, excellent waterproof properties, can significantly reduce the generation of harmful gases in the event of a fire, and is lightweight, easy to install, and has high strength. It relates to a semi-noncombustible insulator that can be used as a filler for a fire door because it is excellent, has a beautiful appearance, has excellent durability at the same time, and is particularly excellent in flame retardancy, and a method for manufacturing a semi-noncombustible insulation that can be manufactured with high productivity. . The present invention also relates to a fire door and a method for manufacturing the fire door using the semi-non-combustible insulating material.

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

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

In particular, a large-scale fire accident recently caused a lot of casualties and property damage. In this case, the so-called 'dry-bit method' was used to construct the exterior walls of the building with insulation, adhesive mortar, and finishing materials without flame retardant or non-combustible performance. This is attributed to the rapid spread of the fire, which in turn caused more damage.

Accordingly, the government has greatly strengthened the fire safety standards for building finishing materials by amending the 'Rules on Standards for Evacuation/Fire Protection Structures of Buildings, etc.', and has been in effect since April 2016.

Typical examples of thermal insulation materials used in conventional insulation construction include styrofoam, polyurethane foam, and polyethylene foam. Among them, polyurethane is widely used because it has the best thermal conductivity. However, polyurethane foam, which is widely used as a heat insulator, has many problems in use due to its high flammability in case of 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 an excellent insulation, but in the case of phenolic foam insulation, the 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 the steps of forming a non-combustible material on the front surface of the insulator, and forming an aluminum foil on the front surface of the incombustible material and the back surface of the insulation material. However, the method has a problem in that it does not satisfy the BS8414 test, which is a reinforced flame retardant performance test, in the case of a fire-resistant composite material, and improvement is urgently requested.

Korean Patent No. 1177383

The present invention has been devised to solve the problems of the prior art as described above, and has excellent thermal insulation properties, excellent waterproof properties, can significantly reduce the generation of harmful gases in case of fire, and is lightweight, easy to install, and has high strength. To provide a semi-non-combustible insulation material that is excellent, has a beautiful appearance, has excellent durability, and is particularly excellent in flame retardancy, which can be used as a filler for a fire door, and a method for manufacturing a semi-non-combustible insulation material that can be manufactured with high productivity. The purpose.

Another object of the present invention is to provide a fire door that has excellent flame retardancy, can significantly reduce the generation of harmful gases in case of fire, has excellent thermal insulation, and has excellent durability at the same time and a method for manufacturing the same.

In order to solve these problems, the present invention

a) the insulation layer 20;

b) 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) - Provides a semi-non-combustible insulating material (100) comprising a surface layer (10) provided with a second aluminum sheet layer (16).

The semi-non-combustible insulating material 100 includes the surface layer 10 on both sides of the insulating material layer 20 .

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

The mixed solution is a) graphite 100 parts by weight; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight of 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 adsorbing material; 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; characterized in that it further comprises at least one material selected from the group consisting of.

The semi-non-combustible insulating material 100 is characterized in that it is used as a filler for the fire door.

Also, the present invention

In the manufacturing method of the semi-incombustible insulating material 100,

S1) preparing the insulation layer 20;

S2) preparing the surface layer 10;

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

includes,

The surface layer 10 is sequentially paper layer 11 - first aluminum sheet layer 12 - first glass mat layer 13 - flame retardant felt layer 14 - second glass mat layer 15 - second It provides a method of manufacturing a semi-non-combustible insulating material, characterized in that the surface layer is provided with an aluminum sheet layer (16).

Preferably, the semi-non-combustible insulating material 100 includes the surface layer 10 on both surfaces of the insulating material layer 20 .

In the method of manufacturing a fire door,

It provides a method of manufacturing a fire door, characterized in that the semi-non-combustible insulating material is filled inside the outer frame of the fire door.

Also, the present invention

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

According to the present invention, it has excellent thermal insulation properties, excellent waterproof properties, can significantly reduce the generation of harmful gases in case of fire, is lightweight and easy to install, has excellent strength, has a beautiful appearance, and has excellent durability. , in particular, it is possible to provide a semi-non-combustible insulation material that can be used as a filler for a fire door because of its remarkably excellent flame retardancy and a method for manufacturing a semi-non-combustible insulation material capable of producing it with high productivity.

In addition, the present invention is excellent in flame retardancy, it is possible to significantly reduce the generation of harmful gas in case of a fire, it is possible to provide a fire door with excellent heat insulation and excellent durability at the same time, and a method for manufacturing the same.

1 shows a schematic cross-sectional view of a semi-non-combustible insulator according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a semi-non-combustible insulating material according to another embodiment of the present invention.
3 is a schematic diagram showing a method for manufacturing a semi-non-combustible insulating material according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. 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 part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

1 is a schematic cross-sectional view of a semi-non-combustible insulator according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view of a semi-non-combustible insulator according to another embodiment of the present invention, and FIG. 3 is an embodiment of the present invention A schematic diagram of a method for manufacturing a semi-noncombustible insulation material according to an example is shown.

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

The semi-non-combustible insulation 100 according to the present invention is

a) the insulation layer 20;

b) 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 is characterized in that it comprises a surface layer (10) provided with a second aluminum sheet layer (16).

The semi-non-combustible insulation 100 according to the present invention is

In the manufacturing method of the semi-incombustible insulating material 100,

S1) preparing the insulation layer 20;

S2) preparing the surface layer 10;

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

includes,

The surface layer 10 is sequentially 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 It can be manufactured through a method of manufacturing a semi-non-combustible insulator, characterized in that the surface layer provided with the aluminum sheet layer 16 .

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

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 well-known aluminum sheet used for a semi-non-combustible heat insulating material.

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

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

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

The combination of the flame-retardant felt layer 14, the first glass mat layer 13 and the second glass mat layer 15 is performed by coating the mixture on the first or second glass mat and curing the uncoated glass The mat can be cured after bonding, or the mixture can be coated on each glass pad and then placed facing each other before curing, and then cured and combined.

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

In the mixture, a) graphite; b) a binder; c) Sugar; Known materials used in semi-incombustible insulating materials may be used, and specifically, the binder b) 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 insulation, light weight, easy installation of insulation, excellent strength, beautiful appearance, and at the same time durability. It is possible to provide an excellent semi-noncombustible insulating material.

d) Calcium carbonate may be a commonly used 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 mixed solution. In this case, it has excellent flame retardancy, excellent waterproofing properties, can significantly reduce the generation of harmful gases in case of fire, has excellent thermal insulation properties, is lightweight and easy to install, has excellent strength, has a beautiful appearance, and is durable at the same time. This excellent semi-noncombustible insulating material can be provided.

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; may further include at least one material selected from the group consisting of.

Said i) to v) may be included in the mixed solution alone, or two or more kinds may be included at the same time.

The i) toxic gas adsorbing material 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 an oxide or complex of a transition metal; and activated carbon or zeolite at the same time.

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

As the oxide or complex of the transition metal, a known oxide or complex of the transition metal may be used, and specific examples thereof may be Cu ₂ O, CuO, CeO ₂ , Co ₃ O ₄ , PdO or SeO ₂ , and are limited thereto. it is not

The toxic gas adsorbing material adsorbs toxic gases such as HCN, CO, HCl, HBr, HF, CO ₂ and NOx generated in the insulation layer in case of fire, thereby reducing the diffusion of the toxic gas to the outside of the semi-non-combustible insulation material, particularly By preventing the spread of HCN gas, which is deadly to the human body, it can significantly reduce human casualties caused by toxic gas.

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

iii) The hollow silica is preferably a closed type having no pores on the surface, and preferably has a diameter of 10 to 120 microns, an apparent specific gravity of 5 to 20Kg/m3, or a true density (true specific gravity) of 125 to 300Kg/m3. It is better to use In addition, as the iv) sodium bicarbonate, known sodium bicarbonate may be used.

As for the v) water glass, a 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 case of fire, has excellent thermal insulation properties, is lightweight and easy to install, has excellent strength, has a beautiful appearance, At the same time, it is possible to provide a semi-noncombustible insulating material with excellent durability.

In the present invention, as the heat insulating material used as the heat insulating material layer 20, a known heat insulating material may be used, and specific examples include urethane foam, polyurea foam, urethane foam, polyisocyanurate foam, polyisocyanurate foam, polystyrene foam, and bead foaming. One or two or more selected from among styrene, extrusion-method foamed styrene, foamed styrofoam, foamed ethylene, and foamed propylene may be mixed.

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

Preferably, the foaming composition comprises: (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) 1 to 30 parts by weight of a foaming agent is included.

More specifically, the polyester polyol is

(S1) preparing terephthalic acid (TPA);

(S2) to 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 ester reaction catalyst to carry out a condensation reaction until the acid value is 1.5 mgKOH/g or less;

(S4) cooling the reactant of step S3);

It can be prepared including.

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

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

The a) MEG (monoethylene glycol) or DEG (diethylene glycol) may be mixed in a ratio of 1: 1.1 to 1.8 with respect to 1 mol of the TPA. Preferably 1: mix so as to be 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 storage properties can be manufactured.

In addition, the PEG (polyethylene glycol) having a molecular weight of 150 to 600 is mixed in 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 insulating material layer 20, and a polyester polyol having superior storage stability and compatibility with other components at room temperature can be manufactured.

In the step (S3), the temperature of the mixture of step (S2) is raised using an ester reaction catalyst, and the condensation reaction is carried out until the acid value is 1.5 mgKOH/g or less. Specifically, the catalyst may be butyl hydroxyoxo tin or tetra-n-butyl titanate, preferably butyl hydroxyoxo tin. Water generated through the vacuum dehydration process can be removed, and preferably, step S3) is performed until the acid value of the reactant is 1.0 mgKOH/g or less, specifically, 0.5 to 1.0 mgKOH/g. Condensation reaction is good. In this case, it is possible to prepare a polyester polyol having excellent storage stability and compatibility with other components.

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

Preferably, the step of cooling the reactant of step (S3) of step (S3-1) in the present invention to 50 to 100° C. may further include mixing a flame retardant. Specifically, the flame retardant in step (S3-1) is preferably mixed in an amount of 5 to 40 parts by weight based on 100 parts by weight of the reactant, specifically, the flame retardant in step (S3-1) is TCPP (tris(chloropropyl)phosphate), TECP (tris (2-chloroethyl) phosphate), TEP (triethyl phosphate, TPP (tripropyl phosphate), may be one or more selected from the group consisting of DMMP (dimethyl methylphosphonate). In this case, the insulation layer 20 is given flame retardancy and it is possible to prepare a polyester polyol having excellent storage properties.

Also preferably, a) MEG (monoethylene glycol) or DEG (diethylene glycol) in step (S1) is independently replaced by 0.1 to 0.3 moles of TMP (trimethylolprophane), Glycerine, TEOA (triethanol amine), PE (pentaerithritol) and mixing, more preferably the TMP (trimethylolprophane), Glycerine, TEOA (triethanol amine), PE (pentaerithritol) are each independently 0.1-0.2: 0.1-0.2: 0.1-0.2: A molar ratio of 0.2-0.3 It is better to mix with In this case, it is possible to provide a better flame retardancy to the heat insulating material layer 20, and it is possible to manufacture a polyester polyol having excellent storage properties at room temperature.

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

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

In the present invention (d) foaming agent may be used a known foaming agent, 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), HFO-1336mzz(Z), Cyclo-pentane, n-pentane , iso-pentane may also be used, but is not limited thereto.

In the present invention, the polyisocyanate (e) may be a known polyisocyanate, and of course, a commercially available polyisocyanate may be used. Specific examples include 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 may be used, but is not limited thereto.

In the present invention, the (e) polyisocyanate is preferably included so that the isocyanate index is 150 to 700. In this case, proper trimerization is combined to provide excellent flame retardancy, it can significantly reduce the generation of harmful gases in case of fire, and has excellent insulation properties, light weight, easy installation of insulation, advantageous for thinning, excellent durability, and excellent strength. And at the same time, it is possible to manufacture a high-flammable insulating material with excellent waterproof properties.

In addition, in the present invention, the foamed composition may further include known additives that may be commonly included in the foamed composition, such as cell stabilizers, flame retardants, chain extenders, epoxy resins, acrylic resins, fillers or pigments. The additives may each independently be 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 foamed composition comprises 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 As such, it may be further included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the polyester polyol.

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

In the present invention, the insulating material layer 20 can be manufactured by foaming the foamed 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 be a trimerized PIR (polyisocyanurate) inside, and a surface layer may be PUR (polyurethane) without trimerization.

In addition, if necessary, the PUR removal step of removing the PUR located on the surface of the insulating material layer 20 may be further included. The 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. If the PIR/PUR has a corrugated interface, it is recommended to grind it so that all the PUR can be removed. More specifically, the thickness removed by the grinding may be 1 to 10 mm. In this case, only the PIR having excellent flame retardancy is left in the heat insulating material layer 20 to manufacture the semi-noncombustible insulator 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 have elapsed. In this case, it can have excellent heat insulation while having flame retardancy.

In addition, in the semi-non-combustible insulating material 100 of the present invention, the heat insulating material layer 20 may have an absorption amount of 1 g/100 cm ² or less. In this case, it is possible to fundamentally solve the problem of a decrease in thermal conductivity and corrosion of metal due to the high absorbency (4 g/100 cm ^{2 or more) of the conventional phenolic foam insulation.}

In addition, the semi-non-combustible insulating material 100 of the present invention is a semi-non-combustible material performance in all tests according to gas toxicity 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 satisfy

According to the present invention, it has excellent thermal insulation properties, excellent waterproof properties, can significantly reduce the generation of harmful gases in case of fire, is lightweight and easy to install, has excellent strength, has a beautiful appearance, and has excellent durability. , in particular, it is possible to provide a semi-non-combustible insulation material that can be used as a filler for a fire door because of its remarkably excellent flame retardancy and a method for manufacturing a semi-non-combustible insulation material capable of producing it with high productivity.

Also, the present invention

In the method of manufacturing a fire door,

There is provided a method for manufacturing a fire door, characterized in that the semi-non-combustible insulating material is filled inside the outer frame of the fire door.

Also, the present invention

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

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

A specific example of manufacturing the surface layer 10 according to the present invention is as follows.

As 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 of 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 on the surface of the first glass mat to a thickness of 1 to 2 mm. After heat-sealing the second aluminum sheet and the second glass mat with PET, the mixture was coated with a thickness of 1 to 2 mm on the surface of the second glass mat. Before the coated mixed solution was cured, the coating layer of the mixed solution was made to face each other, and the coating layer of the mixed solution was positioned between the first and second glass mats to be cured. Paper layer - first aluminum sheet layer - first glass mat layer - flame retardant felt layer - second glass mat layer - surface layer provided with a second aluminum sheet layer by bonding paper to the surface of the first aluminum sheet using an adhesive ( 10) was prepared.

In addition, after mixing 1.26 moles of DEG and 0.35 moles of PEG200 in 1 mole of terephthalic acid, 300 ppm of butyl hydroxyoxotin was added, and then the temperature was raised to 190 ° C. and heated for 3 hours, and then heated to 200 ° C. for 1 hour. After heating, the temperature was raised to 220 ℃ and heated for 2 hours, and then maintained at 100 mmHg reduced pressure for 20 minutes, then maintained at 300 mmHg reduced pressure for 30 minutes, and then when the acid value became 1.0 mgKOH/g under 600 mmHg reduced pressure. Dehydration under reduced pressure was carried out until then, and then the insulation layer was prepared using the polyester polyol prepared by cooling.

A semi-non-combustible insulating material was prepared by bonding the insulating material layer to the prepared surface layer paper as shown in FIG. 1 using an adhesive.

In Example 2, Example 1 except that the surface layer was formed in the same manner as in Example 1 after preparing a mixed solution in which the mixed solution further contains 1 to 50 parts by weight of a toxic gas adsorbing material in Example 1 A semi-non-combustible insulating material was prepared in the same manner as described above.

In Example 3, the same as in Example 1, except that a surface layer was formed in the same manner as in Example 1 after preparing a mixed solution in which the mixed solution further contains 5 to 100 parts by weight of corn starch in Example 1 A semi-non-combustible insulating material was prepared by the method.

In Example 4, except that the surface layer was formed in the same manner as in Example 1 after preparing a mixed solution in which the mixed solution further contains 50 to 200 parts by weight of water glass and 5 to 100 parts by weight of corn starch in Example 1 A semi-noncombustible insulating material was prepared in the same manner as in Example 1.

In Example 5, a surface layer was formed in the same manner as in Example 1 after preparing a mixed solution in which the mixed solution further contained 50 to 200 parts by weight of hollow silica and f) 5 to 100 parts by weight of corn starch in Example 1 A semi-non-combustible insulating material was prepared in the same manner as in Example 1, except that.

In Example 6, a semi-noncombustible insulating material was prepared in the same manner as in Example 1, except that the heat insulating material layer and the surface layer prepared in Example 1 were combined as shown in FIG. 2 .

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

In Example 8, a semi-non-combustible insulating material was prepared in the same manner as in Example 1, except that the heat insulating material layer and the surface layer prepared in Example 4 were combined as shown in FIG. 2 .

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

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

If the semi-incombustible material performance was satisfied, ‘○’ was indicated, and if it did not satisfy the performance, ‘×’ was indicated.

- 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 hazard test ○ ○ ○ ○ ○ ○ ○ ○ × Heat release rate test ○ ○ ○ ○ ○ ○ ○ ○ ×

As shown in Table 1, all of the examples of the present invention exhibited flame-retardant properties of semi-incombustible 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 improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

Claims (9)

a) a layer of insulation;
b) a surface layer 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 sequentially on the surface of the heat insulating material layer; Semi-non-combustible insulation. According to claim 1,
The semi-non-combustible insulator is a semi-non-combustible insulator, characterized in that it comprises the surface layer on both sides of the heat insulating material layer. According to claim 1,
The flame-retardant felt layer is a) graphite; b) a binder; c) sugar; and d) calcium carbonate; semi-non-combustible insulation, characterized in that the mixture is cured by coating. According to claim 1,
The mixed solution is a) graphite 100 parts by weight; b) 50 to 200 parts by weight of a binder; c) 10 to 60 parts by weight of sugar; and d) 10 to 60 parts by weight of calcium carbonate. 5. The method of claim 4,
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; Semi-non-combustible insulating material, characterized in that it further comprises at least one material selected from the group consisting of. According to claim 1,
The semi-non-combustible insulator is a semi-non-combustible insulator, characterized in that it is used as a filler in the fire door. In the manufacturing method of a semi-noncombustible insulating material,
S1) preparing an insulating material layer;
S2) preparing a surface layer;
S3) combining the insulating material layer and the surface layer;
includes,
The surface layer is a method of manufacturing a semi-non-combustible insulating material, characterized in that the surface layer according to any one of claims 1 to 6. In the method of manufacturing a fire door,
A method of manufacturing a fire door, characterized in that the semi-non-combustible insulating material according to any one of claims 1 to 6 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.

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