KR101711571B1 - Environment Friendly and Fire-Retardant Material EVA Panel - Google Patents

Environment Friendly and Fire-Retardant Material EVA Panel Download PDF

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KR101711571B1
KR101711571B1 KR1020150075899A KR20150075899A KR101711571B1 KR 101711571 B1 KR101711571 B1 KR 101711571B1 KR 1020150075899 A KR1020150075899 A KR 1020150075899A KR 20150075899 A KR20150075899 A KR 20150075899A KR 101711571 B1 KR101711571 B1 KR 101711571B1
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South Korea
Prior art keywords
flame retardant
eva
weight
panel
flame
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KR1020150075899A
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Korean (ko)
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KR20160139947A (en
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김경희
최재병
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신호테크 주식회사
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/94Protection against other undesired influences or dangers against fire
    • E04B1/941Building elements specially adapted therefor
    • E04B1/942Building elements specially adapted therefor slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84Sound-absorbing elements
    • E04B1/86Sound-absorbing elements slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/88Insulating elements for both heat and sound
    • E04B1/90Insulating elements for both heat and sound slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups

Abstract

More particularly, the present invention relates to a foamed soundproof flame retardant insulation material, which is susceptible to fire, which is a problem of conventional insulation materials, and which has flame retardant effect, does not have a function to prevent flame or heat from being transferred to the inside, As a result, the problem of making the fire even more by the internal ignition is caused by the combination of the sponge made of environmentally friendly non-toxic material and the sponge made of non-toxic material and the double plate such as the Oxy-pad material or the styrofoam panel, To solve the problem of the heat insulator.
The present invention relates to a method for producing a flame retardant resin composition comprising 50 to 60% by weight of EVA, 5 to 10% by weight of a phosphorus-based flame retardant, 3 to 7% by weight of aluminum oxide (Al (OH3)) and Zinc Borate, 12 to 23% Flame retardant EVA panel is produced by using a flame retardant composition comprising the flame retardant composition.

Description

Environment Friendly and Fire-Retardant Material EVA Panel [0002]

The present invention relates to an environmentally friendly flame retardant EVA panel, and more particularly, to an ethylene vinyl acetate (EVA) panel having excellent heat insulation and sound absorption properties and widely used as a building interior material, Flame retardant EVA panel is manufactured by forming a flame retardant composition so as not to generate a toxic gas, thereby minimizing damage caused by fire and protecting life and property.

As a result of the rapid increase in the prices of the weather and energy resources and the reduction of the production, the regulations on the function and installation of the insulation are being strengthened internationally. many.

As a result, the development of fire-fighting industry technology has prevented the construction materials or fire-fighting objects that are likely to be a fire through electrical, mechanical, or chemical devices, but the fire is occurring more frequently and more frequently. Although the insulation is used only for the products that are approved for the function of flame-proofing, the effect of flame-proofing on the insulation is still insignificant. Also, it plays a role in the generation of toxic gas and fire transfer have.

For example, a panel of insulating material using styrofoam is the most commonly used product, but it is the most vulnerable to fire. When a fire occurs, styrofoam inside the panel is flame-ignited due to its low flash point, The digestion liquid is not injected into the panel at the time of evolution, and it is very difficult for the digestion to evolve. Hereinafter, various existing flame retardant and flame retardant products and technologies will be referred to through reference literature.

References 1; 10 to 90 parts of sponge scrap (EVA, PP, PE), 10 to 80 parts of waste plastic and 0 to 10 parts of a binder polymer were crushed and mixed with a base resin, and 1 to 5 parts of a plasticizer, 0.1 to 5 parts of a crosslinking agent, 1 to 15 parts of a blowing agent and 4 to 40 parts of a flame retardant are mixed with a base resin, kneaded, molded into a sheet, and then heated and pressed in a press to obtain a sponge scrap foam composition.

References 2; 95 to 5% by weight of a copolymer (A) comprising ethylene and vinyl acetate or a further polar group-containing monomer, 5 to 95% by weight of a copolymer (B) comprising an olefin and an unsaturated carboxylic acid ester or a further polar group- And 25 to 250 parts by weight of a flame retardant inorganic compound (D) per 100 parts by weight of a base resin composition containing 0 to 49% by weight of a thermoplastic resin (C) other than these.

References 3; A lightweight impact sound insulating layer made of a resin composition comprising an ethylene-vinyl acetate (EVA) copolymer, a foaming agent, carbon black, and a halogen-based flame retardant; and a resin composition comprising a polypropylene resin, a polyethylene resin and a polypropylene resin / And a resin composition containing a selected resin, a halogen-based flame retardant, barium sulfate, and calcium carbonate.

References 4; It is environment friendly, lightweight, strong to water, good compatibility with adhesives for attaching surface plate, and has a flame retardancy of semi-flame retardant, 0.0165 ~ 0.09 A sandwich panel for construction including a flame retardant core material is disclosed.

References 5; Linear low density polyethylene (LLDPE) in which vinyltrimethoxy silane (VTMS) is grafted; Polyisobutylene succinic anhydride (PIBSA) in which vinyltrimethoxysilane (VTMS) is grafted; A flame retardant resin composition composed of an inorganic metal hydroxide, and a mixture of 5% by weight of a catalyst master batch for silane crosslinking with respect to 95% by weight of a flame retardant resin composition.

Preparing a coating solution by mixing and stirring water, a sodium compound, feldspar powder, talc powder, diatomaceous earth, diatomaceous earth, zinc oxide, PVAc, methanol and MEK in Reference 6, At a ratio of 1 to 8% by weight based on the total weight of the flame-retardant styrofoam particles.

References 7; The resin composition comprises 25 to 40% by weight of a base resin; From 30 to 54% by weight of a flame retardant of metal hydroxide; 0.1 to 30% by weight; And 0.1 to 30% by weight of a flame retarding auxiliary agent.

References 8; As a halogen-free flame retardant, a flame retardant polyolefin foam prepared by a combination of a phosphorus compound and a 1,3,5-triazine compound is disclosed, and in Reference 9; A method for producing an aqueous flame retardant adhesive for a flame retardant coating agent for expanded polystyrene, and a flame retarded foamed polystyrene foamed article production method using an aqueous flame retardant adhesive.

See also Reference 10; Discloses a flame retardant coating agent for a foamed resin in which a flame retardant coating agent obtained by synthesizing silane silicone having a hydrophilic group in a polymer emulsion is coated on beads and foamed. Discloses a method of coating a flame retardant pre-fired foam to coat the surface of an epoxy pre-foam with a flame retardant agent and an adhesive agent in independent steps to improve the heat insulating property and the adhesion performance.

Various flame retardant products have been discussed above. Hereinafter, EVA material panels directly related to the present invention will be described.

A molded article (hereinafter referred to as EVA panel) formed by foam molding of an EVA material in the form of a panel or board in a foam molding machine has excellent characteristics such as non-toxicity, light weight, heat insulation property, heat insulation property and sound insulation property, And is widely used as various kinds of interior and exterior materials for the purpose of keeping warm, insulating, and soundproofing.

However, the EVA panel having the above advantages has a problem that the fire resistance is very poor due to the foamed resin body, and the generation of the noxious gas, the flame and the transfer of the flame are severe when the fire occurs.

We will examine this more specifically.

The EVA material is non-toxic, has excellent flexibility, and is resistant to shocks and has superior impact resistance and shock absorption.

Especially, it is very suitable for heat insulation, heat insulation and vibration prevention. It is widely used for shoe sole, cable, solar light sheet, hot melt adhesive, coating, and simple sponge.

Among these EVA materials, EVA panel is evaluated as excellent in heat insulation and sound absorption, but it has a disadvantage that it is heavier than general styrofoam insulation, and it is vulnerable to flame and high temperature due to many volatile or organic additives added at the time of manufacture Lt; / RTI >

The present invention relates to Oxy-PAN fibers. Oxy-PAN fibers have a fine fiber structure and strong mechanical properties. They have a good role as a heat insulating material, , Which are disclosed in References 12 to 15 and the like.

(Reference 1) Korean Published Patent Application No. 10-2002-0021827, March 23, 2002. (Reference 2) Korean Patent Publication No. 10-2001-0070972, July 28, 2001. (Reference 3) Korean Patent Publication No. 10-2006-0026994, March 27, 2006. (Reference 4) Korean Patent Publication No. 10-2006-0118997, November 24, 2006. (Reference 5) Korean Patent Laid-Open No. 10-2011-0138011, December 26, 2011. (Reference 6) Korean Patent Publication No. 10-2013-0138576, Dec. 19, 2013. (Reference 7) Korean Patent Publication No. 10-1381933, Apr. 04, 2014. (Reference 8) Korean Patent Publication No. 10-2015-0022844, 2015.03.04. (Reference 9) Korean Registered Patent No. 10-1513977, Apr. 21, 2015. (Reference 10) Korean Patent Publication No. 10-2009-0010543, 2009.0.30. (Reference Document 11) Korean Patent Publication No. 10-2010-0047696, 2010.05.10 (Reference 12) Korean Published Patent Application No. 10-1999-0061537, July 26, 1999. (Reference 13) Korean Patent Publication No. 10-2007-0068770, 2007.07.02. (Reference Document 14) Korean Published Patent Application No. 10-2012-0057882, 2012.06.07.

Kim, Kwang Jin, Morphological Behavior Characteristics of Oxy-PAN Fiber on the Change of Acidity, Polymer (Korea) Vol.26, No.4, pp492 ~ 500 (2002) )

As described above, EVA is non-toxic and has excellent lightweight properties, thermal insulation properties, heat insulation properties, soundproofing properties and economical properties, but has defects in heat resistance as thermoplastic foamed resin materials.

Accordingly, the present invention provides a method of foaming and molding EVA by mixing a flame retardant composition with EVA during the foaming and molding of the EVA panel so as to overcome the weak fire resistance of the EVA panel, thereby providing EVA with flame retardancy, I would like to offer an EVA panel.

That is, according to the present invention, the EVA panel is provided with flame retardancy, so that not only destruction due to the heat of the flame but also toxic gas caused by the combustion is not generated, so there is no self-extinguishing property. And the like.

According to an aspect of the present invention,

According to the invention described in claim 1, A flame retardant composition comprising 50 to 60% by weight of EVA, 5 to 10% by weight of phosphorus flame retardant, 3 to 7% by weight of aluminum oxide (Al 2 O 3 ) and zinc borate whitening agent and 12 to 23% by weight of expanded graphite To 100: 5 to 10 by weight of EVA powder.

According to the invention described in claim 2, Wherein the EVA comprises 50 to 60 wt% of pearlite, 5 to 15 wt% of pearlite, 3 to 7 wt% of phosphorus flame retardant, 2 to 5 wt% of aluminum oxide (Al 2 O 3 ) and zinc borate zeolite, 23% by weight based on 100 parts by weight of the flame retardant composition and 100 parts by weight of the EVA powder.

According to the invention described in claim 3, The method according to claim 1 or 2, wherein the EVA panel is manufactured by inserting oxyfine (PAN) fibers.

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The present invention minimizes the influence of heat or flame of a fire when a fire is generated while maintaining the existing excellent functionality such as heat insulation and sound absorption of the EVA panel, thereby preventing fire transition to another space and preventing occurrence of a larger fire And it is advantageous to prevent toxic gas generation, thereby minimizing property damage and material damage as well as personal injury caused by fire.

In particular, by adding a flame retardant function to an EVA panel having excellent heat insulation and sound absorption properties, it is expected that the EVA panel can be provided for various uses and purposes in addition to the interior and exterior materials for building.

1 is an assembled cross-sectional view of an EVA panel according to an embodiment of the present invention.
2 is an assembled cross-sectional view of an EVA panel according to another embodiment of the present invention.
3 is an assembled cross-sectional view of an EVA panel according to another embodiment of the present invention.

The present invention is characterized by manufacturing a flame-retardant EVA panel by adding and adding a flame retardant composition to EVA which is an environment-friendly material.

In order to impart flame retardancy to the EVA, a flame retardant composition is prepared by mixing a bromine-based, phosphorus-based, chlorine-based and inorganic flame retardant with an oxidizing agent and expanded graphite (hereinafter referred to as expanded graphite) .

Then, perlite is added as a filler to foam and mold the EVA panel.

In addition, the EVA panel formed by foaming or molding is formed by insert-molding oxyphan (PAN) fibers or bonding it with a flame-retardant adhesive.

In addition, the foamed and molded EVA panel of the present invention is constituted by a soundproof wall type or the like, and can be provided as a soundproof wall having flame retardance and heat insulation.

Hereinafter, the present invention will be described in more detail with reference to examples and attached drawings.

The accompanying drawings are merely examples for the purpose of easily explaining the content and scope of the technical idea of the present invention, and thus the technical scope of the present invention is not limited or changed.

It is obvious to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention based on these examples.

The present invention relates to a process for producing an EVA panel by adding a flame retardant composition to EVA, and a manufacturing process and a method according to foaming and molding of the EVA panel are already known in the art, and the manufacture of the EVA panel That is, the manufacturing method for performing the processes such as the foaming and the molding is applied to a known technology as it is, so that a description thereof will be omitted.

[Example 1]

For 50 to 60 wt% EVA;

5 to 10% by weight of a flame retardant; A flame retardant composition is prepared by mixing 3 to 7% by weight of expanding agent and 12 to 23% by weight of expanded graphite, and foamed and molded by a molding machine to produce an EVA panel.

The flame retardant may be classified into bromine, phosphorus, chlorine, and inorganic. However, in the present invention, phosphorus is selected and used as a flame retardant suitable for EVA. Of course, flame retardants of the same nature can be found in both bromine and inorganic systems.

In addition, the oxidizing agent uses the most known aluminum oxide (Al 2 O 3 ) and zinc borate, and other known oxidizing agents can be selected and used.

The expanded graphite has various mesh types ranging from 300 mesh to 50 mesh depending on the size of the expanded particle diameter. In the present invention, the range of 100 to 80 mesh is used.

However, the mesh of expanded graphite can be variously selected depending on the intended use. That is, it will be selected so as to have an optimal foam particle size depending on the width (thickness) of the EVA panel to be manufactured, the application, and the purpose.

On the other hand, EVA powder may be further added to the flame retardant composition to amplify expansion of expanded graphite.

That is, the EVA powder may be further added to the flame retardant composition at a weight ratio of 100: 5 to 10, and in this case, liquid EVA may be used, but EVA powder is recommended for convenience of processing.

The EVA panel made of the above-mentioned flame retardant composition and foamed and molded in a molding machine is a nonflammable flame-retarded foam, and a porous fireproof layer is formed in the inside. A flame of 800 ° C is directly applied to the surface of the EVA panel. Non-combustible.

These test results are nonflammability equivalent to flame retardant grade 3 in the flame retardant test according to the flame retardancy test method (KS F2271) of the interior materials and structures of buildings.

[Example 2]

For 50 to 60 wt% EVA;

5 to 15% by weight of pearlite, 3 to 7% by weight of a flame retardant; 2 to 5% by weight of an antistatic agent and 12 to 23% by weight of expanded graphite are mixed to form a flame retardant composition, and the EVA panel is produced by foaming and molding in a molding machine.

In the above, pearlite is excellent as a filler as a heat insulating material, a soundproofing agent, a flame retardant, a light weight, and a sound absorbing property, and is inexpensive and advantageous for EVA panel production.

Especially, it is used for various industrial fields such as non-toxic, tasteless, incombustible, acidic, alkali resistant, heat insulating material, and soil improvement.

The pearlite will be described in detail in Test Examples to be described later.

The composition of the flame retardant, the opacifying agent, and the expanded graphite is the same as that of the first embodiment, and will be described again in spite of the redundant explanation.

As known, the flame retardant can be divided into bromine, phosphorus, chlorine, and inorganic. In the present invention, phosphorus is selected and used as a flame retardant suitable for EVA. Of course, flame retardants of the same nature can be found in both bromine and inorganic systems.

Aluminum oxide (Al 2 O 3 ) and zinc borate are the most commonly used oxidizing agents, and other known oxidizing agents can be selected and used.

Expanded graphite has various mesh types such as 300 mesh to 50 mesh depending on the size of the expanded particle size. In the present invention, it is desired to use 100 to 80 mesh.

However, the mesh of expanded graphite can be variously selected depending on the intended use. That is, it will be selected so as to have an optimal foam particle size depending on the width (thickness) of the EVA panel to be manufactured, the application, and the purpose.

On the other hand, EVA powder may be further added to the flame retardant composition to amplify expansion of expanded graphite.

That is, the EVA powder may be further added to the flame retardant composition at a weight ratio of 100: 5 to 10, and in this case, liquid EVA may be used, but EVA powder is recommended for convenience of processing.

The EVA panel made of the flame retardant composition and foamed and molded in a molding machine is a flame-retardant foam having a nonflammable property. A porous fireproof layer is formed on the inside of the EVA panel and the flame directly contacts the surface of the EVA panel. The incombustibility was not burned for 20 minutes.

[Test Example]

Perlite has many features. However, it can be seen from the gas torch test of Table 1 that the function of perlite alone is not improved continuously. However, when the thermometer is placed behind the EVA panel and the gas torch is lit, the temperature change of the rear surface is measured.

It can be seen that the combination of 15% or more in this test does not show a great effect on the heat shielding, which is considered to affect the uniform dispersion in the manufacture of pearlite and EVA panel.

sample EVA panel perlite 5% perlite 10% perlite 15% perlite 20% Measuring temperature 420 250 210 215 255

[Example 3]

Oxy-PAN fiber 10 plays a good role as a thermal insulation material but has a weak vulnerability to flames.

In order to solve the above-mentioned vulnerability and to secure the heat insulating property of the EVA panel 20 better, the present invention is characterized in that the Oxy-PAN fiber 10 is placed between the flame-retardant EVA panels 20 as shown in Fig. 1 It is characterized by solving these problems and achieving better insulation performance.

Oxy-PAN fibers 10 are inserted into the EVA panel 20 manufactured in the first or second embodiment.

The method of inserting the oxy-PAN fibers 10 is as follows. The Oxy-PAN fiber 10 and the EVA panel 20 are bonded and bonded together with a flame-retardant adhesive between the two EVA panels 20.

Or by molding Oxy-PAN fibers 10 into the EVA panel 20 during the foaming and molding processes.

As described above, the EVA panel 20 having the Oxy-PAN fiber 10 inserted therein secures excellent heat insulation. When a fire occurs, the EVA panel 20 located on both sides of the EVA panel 20 shields flames and heat, So that the fan (Oxy-PAN) fiber 10 is not damaged from the flame.

[Example 4]

The EVA panel 20 having the Oxy-PAN fiber 10 of Embodiment 3 inserted therein is formed as a soundproof wall 30 to constitute a soundproof panel for flame retardant insulation.

As shown in FIG. 2, an EVA panel 20 having an Oxy-PAN fiber 10 formed thereon has a soundproofing wall 30 formed on one surface thereof with a protruding sound wave dissipation type or the like. The EVA panel 30 has excellent heat insulation, Panel, it is possible to compensate for the weak point that the soundproofing wall 30 having excellent soundproofness is vulnerable to fire as the EVA panel 20 formed of an open cell.

[Example 5]

Both sides of an EVA panel made of the composition of Example 1 or Example 2, or an EVA panel having Oxy-PAN fibers inserted therein as in Example 3, Thereby forming an EVA panel having strength.

Both sides of the EVA panel 20 or both sides of the EVA panel 10 in which the Oxy-PAN fibers 10 are inserted as in the case of the second embodiment are disposed on both sides of the steel plate 30) with a flame-retardant adhesive.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention.
10: Oxy-PAN fiber
20: EVA panel
30: iron plate

Claims (7)

A flame retardant composition comprising 50 to 60% by weight of EVA, 5 to 10% by weight of phosphorus flame retardant, 3 to 7% by weight of aluminum oxide (Al 2 O 3 ) and zinc borate whitening agent and 12 to 23% by weight of expanded graphite Wherein the EVA panel is made of a flame retardant composition obtained by mixing EVA powder at a weight ratio of 100: 5 to 10: 1. Wherein the EVA comprises 50 to 60 wt% of pearlite, 5 to 15 wt% of pearlite, 3 to 7 wt% of phosphorus flame retardant, 2 to 5 wt% of aluminum oxide (Al 2 O 3 ) and zinc borate zeolite, Wherein the EVA panel is made of a flame retardant composition in which EVA powder is mixed in a weight ratio of 100: 5 to 10 to a flame retardant composition comprising 23% by weight of a flame retardant. The eco-friendly flame retardant EVA panel according to claim 1 or 2, wherein the EVA panel is manufactured by inserting Oxy-PAN fibers. delete delete delete delete
KR1020150075899A 2015-05-29 2015-05-29 Environment Friendly and Fire-Retardant Material EVA Panel KR101711571B1 (en)

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