KR102401216B1 - Insulation material containing polyisocyanurate with reduced toxic combustion gasL - Google Patents

Abstract

The present invention includes a heat insulating material layer and a surface layer, wherein the heat insulating material layer is a porous foam, 100 parts by weight of a polyol, 10 to 20 parts by weight of a physical foaming agent and 160 to 250 parts by weight of a polyisocyanate based on 100 parts by weight of the polyol, , 100 parts by weight of the polyol, 80 to 100 parts by weight of the polyester polyol mixture, 100 parts by weight of the polyester polyol mixture, 1 to 20 parts by weight of a hydroxide compound having hydroxyl groups at both ends of the molecule, potassium hydroxide and a monofunctional organic acid 0.1 to 10 parts by weight of a polyisocyanurate conversion catalyst obtained by the esterification _of , Polyisocyanurate containing 0.1 to 5.0 parts by weight of a siloxane stabilizer synthesized by the addition reaction of PO (Propylene Oxide) and EO (Ethylene Oxide) and 1 to 30 parts by weight of a liquid phosphorus-based flame retardant containing phosphorus in its molecular structure Disclosed is an insulating material.

Description

Insulation material containing polyisocyanurate with reduced toxicity of combustion gas {Insulation material containing polyisocyanurate with reduced toxic combustion gasL}

The present invention relates to a heat insulating material containing polyisocyanurate with reduced flue gas toxicity.

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 is performed in summer using an air conditioner. Since the increase in cooling and heating 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 of fire, the exterior walls of the building were constructed using the so-called 'dry bit method', in which the building's exterior walls were constructed 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 significantly strengthened the fire safety standards for building finishing materials by amending the 'Rules on Standards for Evacuation/Fire Protection Structures of Buildings', and has been in effect since April 2016.

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

The present invention 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, and at the same time An object of the present invention is to provide an insulating material containing polyisocyanurate having excellent durability, and an insulating material containing polyisocyanurate capable of producing the same with high productivity.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

The heat insulating material comprising polyisocyanurate according to an embodiment of the present invention includes a heat insulating material layer and a surface layer, and the heat insulating material layer is a porous foam, 100 parts by weight of polyol, 100 parts by weight of polyol, physical foaming agent 10 to 20 parts by weight and 160 to 250 parts by weight of polyisocyanate, 100 parts by weight of the polyol, 80 to 100 parts by weight of the polyester polyol mixture, 100 parts by weight of the polyester polyol mixture, a hydroxyl compound having hydroxyl groups at both ends of the molecule 1 to 20 parts by weight, 0.1 to 10 parts by weight of a polyisocyanurate conversion catalyst obtained by an esterification reaction of potassium hydroxide with a monofunctional organic acid, 0.1 to 10 parts by weight of a urethane catalyst comprising an amine component including NH ₂ on the molecular structure A liquid phosphorus-based flame retardant containing 0.1 to 5.0 parts by weight of a siloxane stabilizer synthesized by an addition reaction of Si-0-siloxane and PO (Propylene Oxide) and EO (Ethylene Oxide) and phosphorus in the molecular structure. 1 to 30 parts by weight may be included.

In addition, 80 to 100 parts by weight of the polyester polyol mixture is synthesized by dehydration condensation of a polyfunctional organic acid compound having 1 to 3 functional groups and a polyfunctional hydroxyl compound having OH at the terminal having 1 to 6 functional groups, and the polyfunctional Organic acid compounds include aromatic organic acids in which double bonds and single bonds between carbons are alternated, such as benzoic acid (BA), Phenylacetic acid, polyethyleneterephthalate (PET), Polybutylene terephthalate (PBT), terephthalic acid (TPA), trimethylopropane ( TMP), dimethyleneterephthanlate (DMT), phthalic anhydride (PAn), trimellilic acid (TMA), and may include at least one of trishydroxyethyl isocyanurate.

The polyfunctional organic acid compound includes an organic acid having a linear structure having 3 to 12 hydrocarbons, and includes at least one of palmitoleic acid, oleic acid, vaccenic acid, petroselic acid, galoleic acid, erucic acid, nervonic acid and linoleic acid. can

The polyfunctional hydroxide compound may be a polymer material formed by adding Propylene Oxide (PO) or Ethylene Oxide (EO) to an initiator hydroxide having an OH molecule at the end of the molecule.

According to an embodiment of the present invention, it has excellent flame retardancy, excellent waterproofness, can significantly reduce the generation of harmful gases in case of fire, has excellent thermal insulation, is lightweight and easy to install, has excellent strength, and has excellent appearance. It is possible to manufacture an insulating material containing polyisocyanurate which is beautiful and has excellent durability at the same time, and the same with high productivity.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

1 is a cross-sectional schematic view of a heat insulating material including polyisocyanurate according to an embodiment of the present invention.
2 is a cross-sectional schematic view of a heat insulating material including polyisocyanurate according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings are exaggerated to emphasize a clearer description.

The configuration of the invention for clarifying the solution to the problem to be solved by the present invention will be described in detail with reference to the accompanying drawings based on a preferred embodiment of the present invention, but the same in assigning reference numbers to the components of the drawings For the components, even if they are on different drawings, the same reference numbers are given, and it is noted in advance that the components of other drawings can be cited when necessary in the description of the drawings.

1 is a cross-sectional schematic view of a heat insulating material including polyisocyanurate according to an embodiment of the present invention.

1, the heat insulating material 100 according to an embodiment of the present invention is a heat insulating material 100 including upper and lower surface layers 110 and 130 and an insulating material layer 120 disposed therebetween, and the upper surface layer ( 110 may be formed by combining the metal sheet 111 and the face material 112 , and the lower surface layer 130 may be formed of the face material 130 .

In detail, the upper surface layer 110 may be formed by sequentially stacking a metal sheet 111 , a coating 112 , a face material 113 , and a metal sheet 114 .

In the upper surface layer 110 , the metal sheets 111 and 114 may be made of thin metal, and the reflectance of visible light may be in the range of about 70 to 100%.

These metal sheets 111 and 114 can efficiently reflect infrared radiation heat generated during a fire to effectively prevent the release of harmful gases due to thermal deformation and thermal decomposition of the insulating material layer 120 .

In a specific example, the metal sheets 111 and 114 may be formed of an aluminum thin film.

The face material 112 may be composed of a flame-retardant or semi-non-flammable cotton material laminated with inorganic fibers, and may include inorganic fibers having a unit weight of 150 to 250 g/m ² per area.

Accordingly, when the semi-incombustible urethane insulating material is foamed between the insulating material layer 120 and the upper and lower face materials, the urethane composition of the insulating material layer 120 can be prevented from penetrating into the face material on which the inorganic fibers are woven during the manufacturing process.

On the other hand, the inorganic fiber of the face material 112 has a relatively high melting point in the heat insulating material 100 and effectively blocks the contact between the flame and the heat insulating material layer 120 generated in a fire, thereby effectively preventing the thermal decomposition of the insulating material layer 120 . Thus, it is possible to effectively reduce the emission of combustion gas.

On the other hand, the inorganic fiber of the face material 112 is an inorganic fiber coated with sodium silicate or lithium silicate, an inorganic fiber coated with a hydrogen sulfide material containing a sulfur atom, and an inorganic fiber coated with a resin containing azodicarbonamide. can be configured.

Meanwhile, sodium silicate or lithium silicate, a hydrogen sulfide material, and azodicarbonamide may form the coating layer 113 .

Here, sodium silicate or lithium silicate is a material with a very high solubility of water vapor in the air. When a flame penetrates the inorganic sheet, the vaporization reaction of water vapor in sodium silicate and the sintering process of silica occur simultaneously to form a volume-expanded glass foam layer. By forming it, it is possible to effectively prevent the thermal deformation of the insulating material layer 120 due to the flame and the emission of harmful gases due to thermal decomposition.

In addition, the hydrogen sulfide compound separates sulfur atoms at a high temperature formed in the combustion process, and the separated sulfur atoms cause a chemical reaction with hydrogen cyanide, a toxic gas generated in the combustion process of the nitrogen compound. As a result of this chemical reaction, thiocyanate is formed to reduce the concentration of hydrogen cyanide generated in the combustion process.

In addition, as an organic foaming agent, azodicarbonamide has a higher decomposition temperature than other chemical foaming agents and a large amount of gas is generated.

Meanwhile, in the upper surface layer 110 , the metal sheet 111 and the face material 112 may be coupled through an adhesive. Here, the adhesive may be selected from at least one of a urethane-based adhesive and an epoxy-based adhesive having thermosetting characteristics.

This is a heat-setting material that maintains the shape of the adhesive even in a high-temperature environment that occurs in a fire, unlike the thermoplastic heat-sealing adhesive, and maintains the shape of the metal sheet 111 and the face material 112 to thermally deform the heat insulating material layer 120 of the flame. It can effectively prevent the release of harmful gases due to overthermal decomposition.

The lower surface layer 130 may perform the same shape and function as the face material 112 of the upper surface layer 110 , and a detailed description thereof will be omitted below.

Meanwhile, each of the upper and lower surface layers 110 and 130 preferably has a thickness of 1 to 5 mm. If it is within this 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 lightweight and easy to install, has excellent strength, has a beautiful appearance, At the same time, it is possible to provide an insulating material including polyisocyanurate having excellent durability.

The insulating material layer 120 is interposed between the upper and lower surface layers 110 and 130, and is composed of a porous foam, and may be composed of, for example, a rigid urethane board insulating material.

Here, in the process of injecting the mixture of the urethane foam composition to be described later between the upper and lower surface layers 110, the heat insulating material layer 120 may uniformly distribute the liquid urethane mixture through a distributor installed at the rear end of the mixing head of the foaming machine. , the urethane mixture distributed through this expands to have the same volume expansion rate between the upper and lower surface layers 110 and 130 in the process of foaming, so that it can be injected homogeneously.

In addition, the urethane mixture homogeneously distributed between the upper and lower surface layers 110 and 130 can minimize the variation in local injection density in the heat insulating material 100 by making the expansion and expansion rate of each region the same in the insulating material 100 . In addition, it is possible to minimize the anisotropic dimensional deformation caused by the anisotropy of the crystal direction of the foam cells by forming the crystal form of the foam cells as isotropic as possible through this process.

The insulating material layer 120 may be composed of a polyol synthetic and mixed composition and an isocyanate composition having a high functional group of 2.2 to 2.7.

The heat insulating material layer 120 may include 10 to 20 parts by weight of a physical foaming agent and 160 to 250 parts by weight of polyisocyanate, based on 100 parts by weight of polyol and 100 parts by weight of polyol, and may have an isocyanate index of 150 to 450.

In addition, 100 parts by weight of the polyol, 80 to 100 parts by weight of the polyester polyol mixture, 100 parts by weight of the polyester polyol mixture, 1 to 20 parts by weight of a hydroxide compound having hydroxyl groups at both ends of the molecule, potassium hydroxide and monofunctional organic acid 0.1 to 10 parts by weight of a polyisocyanurate conversion catalyst obtained by the esterification reaction, 0.1 to 10 parts by weight of a urethane catalyst comprising an amine component including NH2 in a molecular structure, Si-0-siloxane in a molecular structure, and PO It may contain 0.1 to 5.0 parts by weight of a siloxane stabilizer synthesized by an addition reaction of (Propylene Oxide) and Ethylene Oxide (EO) and 1 to 30 parts by weight of a liquid phosphorus-based flame retardant containing phosphorus in its molecular structure.

10 to 20 parts by weight of the physical blowing agent, 10 to 90 parts by weight of cyclopentane, which is an isomer of pentahydrocarbon consisting of a single covalent bond of five hydrocarbons, 10 to 90 parts by weight of isopentane, and 10 to 90 parts by weight of cyclopentane, based on 100 parts by weight of cyclopentane At least one selected from 90 parts by weight or a mixture thereof, and the boiling point may be set in a range of 20 to 60 degrees.

Here, isopentane and normal pentane contained in 10 to 20 parts by weight of the physical foaming agent have a combustion enthalpy of 3,450 to 3,550 KJ/mol, which is different from cyclopentane having a combustion enthalpy of 3,200 KJ/mol. It can play a role in reducing the toxicity of combustion gas by suppressing anaerobic incomplete combustion and helping complete aerobic combustion in the combustion process of polyurethane.

80 to 100 parts by weight of the polyester polyol mixture may be synthesized by dehydration condensation of a polyfunctional organic acid compound having 1 to 3 functional groups and a polyfunctional hydroxyl compound having OH at the terminal having 1 to 6 functional groups.

On the other hand, the polyfunctional organic acid chemical having 1 to 3 functional groups may include an organic acid having a molded structure having 3 to 12 hydrocarbons, which improves the compatibility between the hydrocarbon blowing agent and the polyester polyol, so that the hydrocarbon blowing agent is dissolved in the polyol can function as much as possible.

Through this, it suppresses the formation of a bubble layer (void, bubble) between the urethane foam and the face material during the foaming process of manufacturing the urethane insulation material, and prevents the interface between the face material and the urethane foam from separating in case of fire to improve the fire resistance performance. can be done

Here, the polyfunctional organic acid compound may include an aromatic organic acid in which a double bond and a single bond between carbons are alternately formed.

This can perform a function of preventing deformation due to steric hindrance of hydrocarbons when an organic chemical composed of hydrocarbons is thermally deformed due to fire.

The polyfunctional organic acid compounds used for this are benzoic acid (BA), phenylacetic acid, polyethyleneterephthalate (PET), polybutylene terephthalate (PBT), terephthalic acid (TPA), trimethylopropane (TMP), dimethyleneterephthanlate (DMT), phthalic anhydride (PAn), It may include at least one of trimellilic acid (TMA) and trishydroxyethyl isocyanurate.

In addition, the polyfunctional organic acid compound includes an organic acid having a linear structure having 3 to 12 hydrocarbons, which improves adhesion with the substrate surface of the urethane foam through a uniaxial stretching motion after a dehydration condensation reaction with hydroxide to improve the surface material in case of fire It can perform the function of improving the fire resistance performance by preventing the interface between the urethane foam and the urethane foam from being separated.

The polyfunctional organic acid compound used for this may include at least one of palmitoleic acid, oleic acid, vaccenic acid, petroselic acid, galoleic acid, erucic acid, nervonic acid, and linoleic acid.

In addition, the polyfunctional hydroxide compound may be a polymer material formed by adding Propylene Oxide (PO) or Ethylene Oxide (EO) to an initiator hydroxide having an OH molecule at the end of the molecule.

On the other hand, the polyfunctional hydroxide having 1 to 6 functional groups can control the viscosity of the finally synthesized polyester polyol according to the molecular structure of the hydroxide compound. Specifically, as the molecular weight of the polymer hydroxide having repeated ethylene glycol groups increases, the viscosity of the finally synthesized polyester polyol can be lowered, and as the molecular weight decreases, the flame retardancy of the finally synthesized polyester polyol can be improved.

In addition, the polyfunctional hydroxide having 1 to 6 functional groups is a polymer material formed by adding PO (Propylene Oxide) and/or EO (Ethylene Oxide) to an initiator hydroxide having an OH molecule at the end of the molecule. It is possible to determine the functional group of the polyester polyol to be synthesized. Through this, it is possible to synthesize a high-functional polyester polyol, thereby performing a function of preventing thermal deformation of the urethane foam occurring in case of fire.

On the other hand, in 160 to 250 parts by weight of polyisocyanate, isocyanate is an aromatic compound having an NCO isocyanate group and an aromatic benzene structure at the end of the molecule. and isocyanate polymers can be formed.

In addition, 160 to 250 parts by weight of polyisocyanate may include a polymer MDI, and the polymer MDI may have a functional group number of 2.6 to 3.2, and a viscosity of 500 to 1100 cps at room temperature. This polymer MDI improves the degree of crosslinking between the polyol and the polymer MDI to improve the strength of the finally formed urethane insulation foam, and also prevents thermal deformation of the urethane insulation in case of fire, thereby improving fire resistance performance.

Meanwhile, the polymer MDI may also include an intermediate synthetic isocyanate (prepolymer MDI) produced by urethane polymerization of a medium-strength polymer MDI having a viscosity of 100 to 500 cps at room temperature and a polyester polyol having an aromatic ring.

On the other hand, the polymer MDI is a line intermediate synthetic isocyanate (prepolymer MDI) produced by urethane polymerization of a high-viscosity polymer MDI having a viscosity of 500 to 1100 cps at room temperature, and a medium-viscosity polymer MDI having a viscosity of 100 to 500 cps at room temperature, and a polyester polyol. ) may also contain mixtures of

Meanwhile, the polymer MDI may have an NCO content of 27 to 35% by weight in the molecule.

Hereinafter, a method of manufacturing the above-described heat insulating material 100 will be described.

The method of manufacturing the heat insulating material 100 includes preparing each of the upper and lower surface layers 110 and 130, preparing a composition of the heat insulating material layer 120, and injecting the insulating material layer 120 between the upper and lower surface layers 110 and 130. may include the step of

In the step of preparing the upper and lower surface layers 110 and 130 , respectively, the upper surface layer 110 may be manufactured by fusing the above-described metal sheet 111 and the face material 112 . As a specific example, the metal sheet 111 and the face material 112 may be heat-sealed, and in this case, an adhesive may be further used if necessary. Here, the bonding and curing method is not particularly limited, and as a specific curing method, it may be cured by drying at 50 to 120 degrees for 5 minutes to 2 hours.

In the step of preparing the composition of the insulation layer 120, 100 parts by weight of polyol, 100 parts by weight of polyol, 10 to 20 parts by weight of a physical foaming agent and 160 to 250 parts by weight of polyisocyanate It can be prepared by mixing a raw material composition .

Here, the detailed configuration of the detailed insulation layer 120 is the same as described above, and a detailed description thereof will be omitted.

When the content of the raw material composition satisfies the above numerical values, the formation of the foamed insulation material can be smoothly performed in the future, and the flame retardancy of the surface of the formed foam insulation material can be improved.

On the other hand, 160 to 250 parts by weight of polyisocyanate may be a foam obtained by foaming a foamed composition having an isocyanate index of 150 to 450. In this case, it has excellent flame retardancy in combination with appropriate trimerization, can significantly reduce the generation of harmful gases in case of fire, has excellent thermal insulation, is lightweight and easy to install, is advantageous for thinning, has excellent durability, and has excellent strength And at the same time, it is possible to manufacture a high-flammable insulating material with excellent waterproof properties.

On the other hand, in the step of injecting the insulating material layer 120 between the upper and lower surface layers 110 and 130, the urethane mixture is uniformly distributed through a distributor installed at the rear end of the foaming machine mixing head between the prepared upper and lower surface layers 110 and 130, The insulating material layer 120 may be formed.

Through this, the liquid urethane mixture can be uniformly distributed, and the injected urethane mixture expands to have the same volume expansion rate between the upper and lower surface layers 110 and 130 during the foaming process, so that it can be injected homogeneously.

In addition, the urethane mixture homogeneously distributed between the upper and lower surface layers 110 and 130 can minimize the variation in local injection density in the heat insulating material 100 by making the expansion and expansion rate of each region the same in the insulating material 100 . In addition, it is possible to minimize the anisotropic dimensional deformation caused by the anisotropy of the crystal direction of the foam cells by forming the crystal form of the foam cells as isotropic as possible through this process.

On the other hand, Figure 2 shows a schematic cross-sectional view of a heat insulating material containing polyisocyanurate according to another embodiment of the present invention.

Referring to FIG. 2 , the heat insulator 200 according to another embodiment of the present invention is a heat insulator 100 including upper and lower surface layers 110 and 230 and a heat insulator layer 120 disposed therebetween, and the upper surface layer ( 110) may be formed by combining the metal sheet 111 and the face material 112, and the lower surface layer 230 may be formed by combining the metal sheet 231 and the face material 232 like the upper surface layer 110. have.

On the other hand, the following [Table 1] shows the non-combustibility measurement results of the insulating material according to the present invention.

Test Items unit Sample classification result Test Methods Place Quasi-Non-Combustible Test-Total Heat Released (THR600) - - - Ministry of Land, Infrastructure and Transport Notice No. 2018-771 (2018) A3 -No.1 MJ/m ² - 0.9 A3 -No.2 MJ/m ² - 0.9 A3 -No.3 MJ/m ² - 1.1 A3 Quasi-Non-Combustible Test-200 kW/m ² Time Exceeded - - - Ministry of Land, Infrastructure and Transport Notice No. 2018-771 (2018) A3 -No.1 s - 0 A3 -No.2 s - 0 A3 -No.3 s - 0 A3 Semi-incombustible test-test specimen after test - - - Ministry of Land, Infrastructure and Transport Notice No. 2018-771 (2018) A3 -No.1 - - nothing strange A3 -No.2 - - nothing strange A3 -No.3 - nothing strange A3 Semi-flammable test-gas toxicity test - - - Ministry of Land, Infrastructure and Transport Notice No. 2018-771 (2018) A3 -No.1 min: s - 14:14 A3 -No.2 min: s - 14:40 A3

According to the above test results, it was confirmed that the insulating material according to the present invention is excellent in non-combustibility.

The above detailed description is illustrative of the present invention. In addition, the above description shows and describes preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications are possible within the scope of the concept of the invention disclosed herein, the scope equivalent to the written disclosure, and/or within the scope of skill or knowledge in the art. The written embodiment describes the best state for implementing the technical idea of the present invention, and various changes required in the specific application field and use of the present invention are possible. Therefore, the detailed description of the present invention is not intended to limit the present invention to the disclosed embodiments. Also, the appended claims should be construed as including other embodiments.

100: insulation comprising polyisocyanurate
110: upper surface layer
120: insulation layer
130: lower surface layer

Claims (13)

Including a thermal insulation layer and a surface layer,
The insulation layer is
It is a porous foam,
100 parts by weight of a polyol, 10 to 20 parts by weight of a physical blowing agent and 160 to 250 parts by weight of a polyisocyanate based on 100 parts by weight of the polyol,
100 parts by weight of the polyol,
80 to 100 parts by weight of a polyester polyol mixture,
Based on 100 parts by weight of the polyester polyol mixture,
1 to 20 parts by weight of a hydroxide compound having hydroxyl groups at both ends of the molecule;
0.1 to 10 parts by weight of a polyisocyanurate conversion catalyst obtained by esterification of potassium hydroxide with a monofunctional organic acid;
0.1 to 10 parts by weight of a urethane catalyst comprising an amine component including NH ₂ on the molecular structure;
0.1 to 5.0 parts by weight of a siloxane stabilizer including Si-0-siloxane on the molecular structure, and synthesized by the addition reaction of PO (Propylene Oxide) and EO (Ethylene Oxide), and
A heat insulating material comprising polyisocyanurate comprising 1 to 30 parts by weight of a liquid phosphorus-based flame retardant containing phosphorus in its molecular structure.
The method of claim 1,
80 to 100 parts by weight of the polyester polyol mixture,
A polyfunctional organic acid compound having 1 to 3 functional groups and
A polyfunctional hydroxide compound having OH at the terminal having 1 to 6 functional groups is synthesized by dehydration condensation,
The polyfunctional organic acid compound includes an aromatic organic acid in which double bonds and single bonds between carbons are alternated,
Benzoic acid (BA), Phenylacetic acid, polyethyleneterephthalate (PET), Polybutylene terephthalate (PBT), terephthalic acid (TPA), trimethylopropane (TMP), dimethyleneterephthanlate (DMT), phthalic anhydride (PAn), Trimellilic acid (TMA), and trisocyanuratehydroxyethyl isocyanurate Insulation material comprising polyisocyanurate comprising at least one of.
The method of claim 1,
80 to 100 parts by weight of the polyester polyol mixture,
A polyfunctional organic acid compound having 1 to 3 functional groups and
A polyfunctional hydroxide compound having OH at the terminal having 1 to 6 functional groups is synthesized by dehydration condensation,
The polyfunctional organic acid compound is
It contains an organic acid of a linear structure having 3 to 12 hydrocarbons,
Insulation material comprising polyisocyanurate comprising at least one of palmitoleic acid, oleic acid, vaccenic acid, petroselic acid, galoleic acid, erucic acid, nervonic acid and linoleic acid.
The method of claim 1,
80 to 100 parts by weight of the polyester polyol mixture,
A polyfunctional organic acid compound having 1 to 3 functional groups and
A polyfunctional hydroxide compound having OH at the terminal having 1 to 6 functional groups is synthesized by dehydration condensation,
The polyfunctional hydroxide compound is
An insulating material comprising polyisocyanurate, a polymer material formed by adding propylene oxide (PO) or ethylene oxide (EO) to an initiator hydroxide having an OH molecule at the end of a molecule.
Including a thermal insulation layer and a surface layer,
The insulation layer is
It is a porous foam,
100 parts by weight of a polyol, 10 to 20 parts by weight of a physical blowing agent and 160 to 250 parts by weight of a polyisocyanate based on 100 parts by weight of the polyol,
160 to 250 parts by weight of the polyisocyanate has an isocyanate index of 150 to 450,
160 to 250 parts by weight of the polyisocyanate includes a polymer MDI,
The polymer MDI, the number of functional groups is 2.6 to 3.2, and the viscosity at room temperature is 500 to 1100 cps,
160 to 250 parts by weight of the polyisocyanate,
Including line intermediate synthetic isocyanate (prepolymer MDI),
The intermediate synthetic isocyanate is an insulating material comprising polyisocyanurate having a viscosity of 100 to 500 cps at room temperature.
delete 6. The method of claim 5,
160 to 250 parts by weight of the polyisocyanate,
It contains a mixture of polymer MDI and pre-intermediate synthetic isocyanate (prepolymer MDI),
The polymer MDI has a viscosity of 500 to 1100 cps at room temperature,
The intermediate synthetic isocyanate is an insulating material comprising polyisocyanurate having a viscosity of 100 to 500 cps at room temperature.
6. The method of claim 5,
The polymer MDI is an insulator comprising polyisocyanurate having an NCO content of 27 to 35% by weight in the molecule.
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