KR20140087637A

KR20140087637A - Insulation material for building based on phenol foam and insulation wall structure including the same

Info

Publication number: KR20140087637A
Application number: KR1020120158156A
Authority: KR
Inventors: 김태훈
Original assignee: 캐스켐텍(주)
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2014-07-09

Abstract

The present invention provides a building insulation comprising a first panel comprising a foamed foam of phenolic resin and a surface coating layer formed on at least a portion of the surface of the first panel by coating a resin coating composition on the first panel. The construction heat insulation material is excellent in workability due to its excellent heat insulation property and durability, and is a building material capable of achieving not only fire prevention but also environment-friendly purposes because it is flame retardant and has little discharge of noxious gas.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat insulating material for building,

This technology is a technology in the field of building materials, more specifically, a construction heat insulation material excellent in heat insulation effect and nonflammability (flame retardancy), excellent durability and excellent workability in structural combination with other materials, to be.

Insulation materials are used in all buildings to protect the indoor environment. In general, asbestos, polyurethane foam, expanded polystyrene (EPS), and extruded polystyrene (EXP) have been used as a heat insulating material to be embedded in a wall of a building.

However, in the case of the above-mentioned asbestos, drinking the powder through the breath has been identified as a substance capable of causing malignant tumors in lung cancer, lung disease, pleura or pleura, and is designated as a carcinogen by the World Health Organization (WHO) have. In addition, insulation materials such as polyurethane foam, EPS, and EXP have recently been recognized as materials that are not flame retardant or incombustible, and are not suitable for various fire prevention regulations. Therefore, it is urgent to replace the conventional insulation.

In recent years, attempts to develop phenol foam as an insulating material have been made. However, due to various technical difficulties such as poor durability of phenol foam and difficulty in forming processing, it is difficult to use it as a real building material.

An object of the present invention is to provide a thermal insulating material excellent in non-flammability or flame retardancy and having improved durability and excellent secondary functions such as waterproofing and soundproofing as well as thermal insulation.

It is another object of the present invention to provide a thermal insulating wall for construction which comprises the heat insulating material and can be utilized as a wall material of a building or a structure.

The building insulation according to an embodiment of the present invention includes a first panel made of a foamed foam of phenolic resin and a surface coating layer formed on at least a part of the surface of the first panel by coating a resin coating composition on the first panel .

The foamed foam is prepared to have a density of 40 to 60 kg / m ³ , and a phenolic resin composition comprising 100 parts by weight of a phenol resin, 5 to 15 parts by weight of a curing agent, and 5 to 15 parts by weight of a blowing agent is cured and foamed . On the other hand, the curing agent may include alkane compounds such as pentane.

As the phenol resin, a resol-type phenol resin can be used and has a weight average molecular weight of 300 to 1500. The phenolic resin may further include 10 to 30% by weight of a novolac-type phenolic resin of the resol-type phenolic resin. The phenolic resin composition may further comprise 2 to 10 parts by weight of a metal oxide compound and 2 to 10 parts by weight of a glycol compound based on 100 parts by weight of the phenol resin.

As the resin coating composition, a polyurea resin composition may be used. The coating composition may comprise 100 parts by weight of a polyurea resin and 50 to 150 parts by weight of an amine curing agent. The polyurea resin is formed by a synthesis reaction of an isocyanate compound and a polyhydric alcohol.

The building heat insulating wall material according to an embodiment of the present invention includes a building heat insulating material made of foamed foam of the phenolic resin and a second panel disposed on one side of the building heat insulating material and bonded to each other.

The second panel may be adhered to the surface coating layer before the surface coating layer of the building insulation is cured. Alternatively, the second panel may be adhered to the building insulation by an adhesive.

The building material insulating material according to the present invention is a foamed foam of a phenolic resin, that is, a heat insulating material based on phenol foam, and has excellent heat insulating properties. In addition, it contains flame retardant grade 2 fire-retardant materials, satisfying various future-oriented legal regulations as well as being eco-friendly because it does not emit harmful gas during combustion and has low human harmfulness. Furthermore, since the surface coating layer is formed, it has a sufficient durability and therefore has excellent workability and excellent functional properties such as soundproofing, waterproofing and moisture-proofing.

On the other hand, the heat insulating material for building has excellent bonding force and adhesive force with an outer panel and the like, and can be easily processed into a structure having various shapes, thereby increasing the manufacturing process efficiency of the heat insulating wall materials and the like.

1 is a side cross-sectional view conceptually showing a heat insulating material for building according to an embodiment of the present invention.
2 is a side cross-sectional view illustrating a construction in which a heat insulating material for construction according to an embodiment of the present invention is combined with an outer panel to be processed into a heat insulating wall material.
FIG. 3 is a side cross-sectional view of the heat insulating wall material for construction according to an embodiment of the present invention formed after the processing of FIG. 2;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heat insulating material for construction according to an embodiment of the present invention and a heat insulating wall material for construction using the same will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

1 is a side cross-sectional view conceptually showing a heat insulating material for building according to an embodiment of the present invention.

Referring to FIG. 1, a building thermal insulator 100 according to an exemplary embodiment of the present invention includes a first panel 110 and a surface coating layer 120 coated on a surface of the first panel 110.

The first panel 110 is made of a foamed foam of phenolic resin. The density of the foamed foam may be adjusted to a range of 40 to 60 kg / m ³ , and the foamed foam is preferably adjusted to have a foaming ratio of about 2 to 5 times. As the phenolic resin, a resol-type phenolic resin may be used, and in some cases, a resol-type phenolic resin and a novolak-type phenolic resin may be used together. As the resol type phenol resin, a resin having a weight average molecular weight of approximately 300 to 1500 may be used, and a resol type phenol resin having a weight average molecular weight of 400 to 800 may be used. When the weight average molecular weight of the resol-type phenol resin is less than 300, there is a problem of cell structure due to rapid heat generation and foaming. On the other hand, when the weight average molecular weight of the resol-type phenol resin exceeds 1500, there is a problem. When the novolac phenolic resin is used together with the resol-type phenol resin, the novolak-type phenolic resin may be used in an amount of 10 to 30% by weight based on the weight of the resol-type phenolic resin. The foamed foam forming the first panel 110 may further include a metal oxide compound, a glycol compound, etc. in addition to the resin component. As the metal oxide compound, aluminum hydroxide or the like may be used, and as the glycol compound, ethylene glycol or the like may be used.

The foamed foam of the phenolic resin may be formed by curing and foam molding the phenolic resin composition in a mold. The phenolic resin composition includes 100 parts by weight of a phenol resin, 5 to 15 parts by weight of a curing agent, and 5 to 15 parts by weight of a blowing agent. Further, 2 to 10 parts by weight of the metal oxide compound may be further added to 100 parts by weight of the phenol resin, and 2 to 10 parts by weight of the glycol compound may be included.

As the curing agent, para-toluenesulfonic acid, toluenesulfonic acid, phosphoric acid, sulfuric acid and the like can be used. If the amount of the curing agent is less than 5 parts by weight based on 100 parts by weight of the phenol resin, the curing time is delayed. On the other hand, if the content of the curing agent is more than 15 parts by weight, foam hardening may occur.

As the foaming agent, alkane compounds such as pentane, hexane, heptane, cyclohexane, and cyclopentane can be used. If the content of the foaming agent is less than 5 parts by weight based on 100 parts by weight of the phenol resin, there arises a problem such as a structural problem of the core cell and lowered thermal conductivity. On the other hand, when the content of the foaming agent exceeds 15 parts by weight, May occur.

As the metal oxide compound sheet, magnesium hydroxide, aluminum hydroxide, or the like can be used, and the metal oxide compound performs a flame retardant function (role). Examples of the glycol compound include glycerin, ethylene glycol, propylene glycol, polyol, and the like, and perform a function of improving processability.

The phenolic resin composition is processed into a first panel 110 by foam molding so as to have required physical properties in consideration of use and form of the building in the mold. Meanwhile, before the first panel 110 is completed, the foaming foam can be corrected in its shape through secondary processing such as cutting.

Hereinafter, a method of manufacturing the first panel 110 will be described in detail with specific examples. However, the technical idea of the present invention is not limited by the following embodiments.

[Example 1] Preparation of first panel The resin composition having the composition described below was put into a molding mold set at 80 캜 and foamed for about 10 minutes to prepare a first panel.

ingredient Phenolic resin Hardener blowing agent additive Metal oxide
compound Glycol compound product name Resoluble phenolic resin Novolac phenolic resin Paratoluene
Sulfonic acid Pentane Aluminum hydroxide Ethylene glycol Content (parts by weight) 100 15 8 8 5 5

At least one region of the surface of the first panel 110 is coated with a coating composition containing a polyurea resin to form a surface coating layer 120. In this embodiment, the surface coating layer 120 is formed on all the surfaces.

The surface coating layer 120 may be formed in the form of a first panel 110 even if various physical deformation such as grooves, concavo-convex and the like occurs on the surface of the heat insulating material 100 which is produced by improving the durability and strength of the foamed foam forming the first panel 110 Do not damage. That is, the surface coating layer 120 may ultimately improve the workability of the first panel 110. In addition, the surface coating layer 120 may include various functional additives so that the thermal insulating material 100 according to the present embodiment may be a means for further enhancing the incombustibility, or for providing additional functions such as soundproofing and moisture-proofing.

The coating composition used to form the surface coating layer 120 basically contains a urea resin, so that the durability of the first panel can be firmly maintained. The coating composition according to an embodiment of the present invention includes 100 parts by weight of a polyurea resin synthesized by an isocyanate compound and a polyhydric alcohol, and 50 to 150 parts by weight of an amine curing agent.

Methylene Diphenyl Diisocyanate (MDI) may be used as the isocyanate compound, and Poly Popylene Glycol (PPG) may be used as the polyhydric alcohol. The isocyanate compound and the polyhydric alcohol may be used at a weight ratio of about 1: 1 It is preferable to react. The amine curing agent may include diethylmethylbenzenediamine (DETDA) and a polyol. The amine compound may have an amount of 10 to 30% by weight in the curing agent.

If the content of the amine curing agent is less than 50 parts by weight based on 100 parts by weight of the polyurea resin, the curing reaction is not properly performed. If the content of the amine curing agent exceeds 150 parts by weight, the curing time is too short, .

In the present embodiment, the coating composition is applied to the surface of the first panel 110 by spraying and cured to form the surface coating layer 120. Alternatively, the surface coating layer 120 may be formed by other coating methods, Can be formed. However, when the coating composition is applied to a building structure in which thickness uniformity of the surface coating layer 120 is important, other coating methods such as roll coating and spin coating may be considered.

Meanwhile, the coating composition may be post-coated on the surface of the prepared first panel 110, but may be coated in the same process simultaneously with the production of the first panel 110 using a process such as an in-mold process It is possible.

[Example 2] Formation of surface coating layer

The coating composition according to the composition shown in Table 2 below was coated on all the surfaces of the first panel prepared in Example 1 by a spray method and then a surface coating layer was formed by curing at room temperature.

ingredient Polyurea resin Amine hardener MDI Polyol Amine Polyol Spherical component MDI PPG DETDA PPG Content (parts by weight) 50 50 20 80

2 is a side cross-sectional view illustrating a construction in which a heat insulating material for construction according to an embodiment of the present invention is combined with an outer panel to be processed into a heat insulating wall material. FIG. 3 is a side cross-sectional view of the heat insulating wall material for construction according to an embodiment of the present invention formed after the processing of FIG. 2;

Referring to FIGS. 2 and 3, the heat insulating material 100 for construction shown in FIG. 1 functions as a heat insulating wall material 300 for building intended by being combined with another structure 200 which is a separate member from the heat insulating material 100 .

Referring to FIG. 2, the building heat insulating wall material 300 shown in FIG. 3 is formed by attaching the second panel 200 to one side of the building heat insulating material 100. Although the second panel 200 is coupled to one side of the heat insulating material 100 in the present embodiment, the second panel 200 can be coupled to both sides of the second panel 200, One side of the heat insulating material 100 or one second panel 200 may be bonded to either side of the plurality of the building insulating materials 100. [ As described above, the combination of the heat insulating material 100 and the second panel 200 can be appropriately designed by the operator in consideration of the type of the building or the structural characteristics of the heat insulating material application area.

The second panel 200 is attached to the building heat insulating material 100 by an adhesive, thereby forming a so-called sandwich panel 300. As the adhesive, an epoxy adhesive is preferably used. Alternatively, the second panel may be attached to the building thermal insulation material 100 via a coating composition forming the surface coating layer 120 before the surface coating layer 120 of the building thermal insulation material 100 is cured.

In the case of the heat insulating material based on the conventional urethane foam, since the adhesion performance to the external panel is poor and the secondary working is difficult, the heat insulating material for building 100 according to an embodiment of the present invention is not limited to the structure And has excellent surface properties with excellent adhesion performance. That is, the construction heat insulating material 100 has an advantage that a conventional sandwich panel processing process can be directly applied to the heat insulating wall material 300 for construction.

Claims

A first panel made of a foamed foam of phenolic resin; And
And a surface coating layer formed on at least a part of the surface of the first panel by coating a resin coating composition on the first panel.

The method according to claim 1,
Wherein the foam has a density of 40 to 60 kg / m < ³ >.

The method according to claim 1,
The foamed foam may contain,
Wherein the phenolic resin composition comprises 100 parts by weight of a phenol resin, 5 to 15 parts by weight of a curing agent, and 5 to 15 parts by weight of a blowing agent, by curing and foam molding in a mold.

The method of claim 3,
Wherein the phenol resin is a resol-type phenol resin and has a weight average molecular weight of 300 to 1,500.

5. The method of claim 4,
Wherein the phenolic resin further comprises 10 to 30% by weight of a novolak-type phenolic resin of the resol-type phenol resin.

The method of claim 3,
2 to 10 parts by weight of a metal oxide compound and 2 to 10 parts by weight of a glycol compound.

The method of claim 3,
Wherein the curing agent comprises pentane.

The method according to claim 1,
Wherein the resin coating composition comprises a polyurea resin.

9. The method of claim 8,
The coating composition may comprise,
100 parts by weight of a polyurea resin produced by the reaction of an isocyanate compound and a polyhydric alcohol;
And 50 to 150 parts by weight of an amine curing agent.

10. The method of claim 9,
Wherein said isocyanate compound comprises methylenediphenyl diisocyanate, and said polyhydric alcohol comprises polypropylene glycol.

The building insulation according to claim 1, And
And a second panel disposed on one surface of the heat insulating material for construction and bonded to the first panel.

12. The method of claim 11,
Wherein the second panel is adhered to the surface coating layer before the surface coating layer of the building heat insulating material is cured.

12. The method of claim 11,
Wherein the second panel is adhered to the building heat insulating material by an epoxy adhesive.