KR20190069907A - Fire Prevention Compositions Containing Graphite - Google Patents

Abstract

The present invention relates to a fire prevention composition containing graphite and, more specifically, to a fire prevention composition containing graphite, which comprises: 5 to 25 wt% of a flame retardant; 1 to 15 wt% of a dust-resistant flame retardant additive; 10 to 32 wt% of foam expanded graphite; 15 to 38 wt% of enamel; 3 to 12 wt% of an enamel additive; and 18 to 32 wt% of a solvent, wherein the dust-resistant flame retardant additive comprises a mixture containing a melamine polyphosphate flame retardant and a melamine cyaurate flame retardant. Due to the characteristics of the graphite, a heat shielding film on a carbonized part in contact with sparks or fire elements is formed, thereby preventing fire.

Description

Fire Prevention Compositions Containing Graphite < RTI ID = 0.0 >

The present invention relates to a composition for preventing fire which contains graphite, and more particularly, to a composition containing 5 to 25% by weight of a flame retardant, 1 to 15% by weight of a dust-preventing flame retardant additive, 10 to 32% by weight of expansive expanded graphite, 3 to 12% by weight of an enamel additive and 18 to 32% by weight of a solvent, wherein the dustproof flame retardant additive is a mixture comprising a melamine polyphosphate flame retardant and a melamine cyanurate flame retardant The present invention also relates to a composition for preventing fire which contains graphite which can prevent fire by forming a heat shielding film on a carbonized part where fire elements are contacted due to the characteristics of graphite.

In Korea, Article 241 of the Rule of the Industrial Safety and Health Standards requires measures to prevent sparks and firehight scattering in the anti-fouling cover or welding fireproof cover in order to prevent the occurrence of fire. In Articles 244 to 246, Such as installing noncombustible materials in locations where they are located.

As one method for taking the above measures, a technique for preventing the occurrence of fire has been proposed, as disclosed in the prior art document 10-1466045 and the patent document 10-1423398. However, the prior art described above has pointed out the following problems as a method depending on its own material characteristics. That is, as shown in FIG. 1, since the instantaneous heat-resistant temperature is only about 300 to 1200 ° C., soot or perforation S is liable to occur at the carbonization site where the fire or fire element is in contact, And there is a problem that the phenomenon that the irritating dust is scattered occurs.

On the other hand, Korean Patent Registration Nos. 10-0996720 and 10-1601708 disclose, as other prior art documents, that when the flame reaches the coating film, the coating film components are physically and chemically changed to foam and expand in a carbonized state to form a barrier layer And a composition for forming a nonflammable coating film which protects the combustible material from being burned. However, the above-mentioned prior arts related to the composition for forming a nonflammable film have been proposed as a construction interior material, and have focused on shortening the drying time in the manufacturing process or preventing the release of harmful substances in the fire. And it has a drawback that it is insufficient in performance and characteristics.

Korean Registered Patent No. 10-1466045 (Registration date: November 21, 2014) Korean Registered Patent No. 10-1423398 (registered date: July 18, 2014) Korean Registered Patent No. 10-0996720 (Date of Registration; November 19, 2010) Korean Registered Patent No. 10-1601708 (registered date: March 3, 2016)

Disclosure of Invention Technical Problem [8] The present invention provides a composition for preventing fire which contains graphite, which can prevent fire by using graphite.

Another object of the present invention is to provide a composition for preventing fire which contains graphite in which dust and noxious gas are not generated.

In order to solve the above-mentioned problems and to achieve the object, the composition for preventing fire with graphite according to an embodiment of the present invention comprises 5 to 25% by weight of a flame retardant, 1 to 15% by weight of a particulate anti- Wherein the flame retardant additive is a flame retardant additive selected from the group consisting of melamine polyphosphate flame retardant and melamine cyanurate, And a melamine cyaurate-based flame retardant.

The flame retardant is composed of 35 to 45% by weight of ammonium polyphosphate, 12 to 25% by weight of aluminum hydroxide, and 25 to 35% by weight of graphite.

The enamel is made of a silicone resin.

The enamel additive is made of an acrylic resin.

The solvent may be at least one selected from the group consisting of xylene, IPA (isopropyl alcohol) and ethanol.

And less than 1% by weight of platinum catalyst.

As described above, the composition for preventing fire containing graphite according to the present invention has the following effects.

(1) The present invention has an advantage that fire can be prevented by forming a heat shielding film at a carbonization site where fire or fire element touches by utilizing the characteristics of graphite expanding and expanding by heat.

(2) The present invention is advantageous in that dust and noxious gas are not generated even when carbonized by a fire or a fire element, and flexibility can be maintained without thermal curing.

Brief Description of the Drawings Fig. 1 is a view of a welded cloth according to a preferred embodiment of the present invention, in which a puncture caused by a weld defect occurs.
FIGS. 2 to 5 are photographs of a welding cloth test according to a preferred embodiment of the present invention.

The present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements, and in which: FIG. In addition, terms defined in the present specification and claims are not to be interpreted as limiting, and may be changed according to the intention or custom of the operator, and should be construed in a meaning and a concept consistent with the technical idea of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in order to obscure the present invention.

As shown in FIG. 2 and subsequent drawings, a composition according to an embodiment of the present invention is applied to a fabric 1 to form a flame retardant film, thereby forming a heat shield film while being physically and chemically deformed by heat, Thereby preventing scattering of fire and further preventing fire.

The composition for preventing fire containing graphite according to the present invention comprises 5 to 25% by weight of a flame retardant, 1 to 15% by weight of a dustproof flame retardant additive, 10 to 32% by weight of expandable expanded graphite, 15 to 38% by weight of enamel, 3 to 12% % Of flame retardant additive, and 18 to 32 wt% of a solvent, wherein the dustproof flame retardant additive is a mixture comprising a melamine polyphosphate flame retardant and a melamine cyanurate flame retardant.

The flame retardant is for suppressing combustion even when a fire or a fire element comes into contact. The flame retardant is a halogen-free system, and a phosphorus compound or a phosphorus-inorganic mixture is more preferable in view of economical efficiency, characteristics required for a weld, and the like. Particularly, the flame retardant is a powder containing 35 to 45% by weight of ammonium polyphosphate (APP), 12 to 25% by weight of aluminum hydroxide (ATH) and 25 to 35% by weight of graphite, Mixtures of the type may be more preferred. APP is a phosphorus flame retardant in the form of powder, and when it receives a flame under its own properties, it expands to form a carbonized film, which can prevent fire or fire elements from scattering. ATH is able to suppress combustion by forming OH / H2 (H ₂ O) by combination with hydrogen element (H) in the air during combustion.

Further, the present invention may further comprise 1 to 5% by weight of a flame retardant composition. Wherein the flame-retardant composition comprises a metal-silicon-based nano-colloid, a nanosilica colloid, a fluorine-based emulsifier and a resin, and the metal-silicon-based nano-colloid includes one or more selected from aluminum, zinc, magnesium, tin, calcium, zirconium and antimony Wherein the flame-retardant composition further comprises an Al2O3 colloid, and the metal-silicon-based nanocolloid comprises an aluminum-silicon-based nanocolloid.

The flame retardant composition according to the present invention comprises 5 to 20% by weight of an aluminum-silicon based nano-colloid, 5 to 20% by weight of an Al2O3 colloid, 50 to 85% by weight of a nano-silica colloid, 0.01 to 3% by weight of a fluorinated emulsifier, 20% by weight.

The added flame retardant composition minimizes the deterioration of color, physical properties and properties, and is characterized by high transparency that is eco-friendly and excellent in flame retardant effect.

The dust-preventing flame-retardant additive is used to prevent the phenomenon that the expandable expanded graphite is blown up by being blown by heat and becomes smoke (dust) and generates smoke. Particularly, the dust-preventing flame- Based flame retardant. That is, the dust-preventing flame retardant additive may be a mixture of a melamine polyphosphate flame retardant and a melamine cyanurate flame retardant, for example, a melamine flame retardant The formula may be C ₃ H ₉ N ₆ PO ₄ . Accordingly, when the flame retardant film formed by applying the composition of the present invention is in contact with fire or fire elements, the melamine forming the dust-preventing flame retardant additive melts and melts between the expanded expandable graphite, It can prevent ashes from flying as it fires and dilute the smoke that comes out of the combustion.

The use of the dust-preventive flame-retardant additive in combination with the flame retardant agent can improve flame retardancy as well as provide additional characteristics of the respective phosphorus-based, inorganic-based and melamine-based flame retardants, It is more reasonable from the side. Figs. 2A to 2C show a comparative example in which the flame retardant additive is not included. As a comparative example, 57 g of the flame retardant, 35 g of the expanded expandable graphite,

 A resin composition comprising 50 g of an enamel made of a silicone resin is applied to the fabric and the cured product is cured at a temperature of about 180 degrees. Referring to FIGS. 2A to 2C, it can be seen that the adhesive force between the flame retardant film and the fabric is significantly lowered, and it can be seen that even when the end portion is pushed by hand, the foamed expandable graphite is easily burned and foamed You can visually confirm that the dust is blown off a lot. Fig. 3 is a graph showing the results obtained when the flame retardant additive is included, and a composition comprising 49 g of the flame retardant, 6 g of the flame retardant additive, 35 g of the expanded graphite, and 50 g of enamel made of a silicone resin is applied to the fabric, Cured film of the present invention. Referring to FIG. 3, when the foamed expanded graphite is burned and foamed as seen in the naked eye as compared with FIG. 2A to FIG. 2C, the phenomenon of dust spatter remarkably decreases.

The expandable expanded graphite can be used to prevent the flame from spreading to the combustible when the flame or the fire element is in contact with the flame and the graphite is carbonized and expanded to form the carbonized layer, that is, the heat shielding film. In Experiment 1, a composition comprising 20 g of the flame retardant, 2 g of the flame retardant additive, 18.2 g of the expandable expanded graphite, 20.5 g of enamel made of silicone resin, 8 g of acrylic resin and 58 g of xylene- And about 10 minutes at a temperature of about 150 ° C. for about 15 minutes and about 15 minutes at a later temperature of about 150 ° C. In Experiment 2, a composition comprising 26.7 g of the flame retardant, 2.7 g of the flame retardant additive, 18.2 g of the expanded expandable graphite, 20.5 g of enamel made of silicone resin, 8 g of acrylic resin and 35 g of xylene- A flame-retardant film is formed which is cured at a temperature of 100 ° C for about 10 minutes, and at a temperature of about 150 ° C for a period of 15 minutes + 15 minutes. In Experiment 3, a composition including 15 g of the flame retardant, 7 g of the flame retardant additive, 13.7 g of the expanded expanded graphite, 20.5 g of enamel made of a silicone resin, 8 g of an acrylic resin and 30 g of a xylene-based solvent was applied to the fabric, And about 10 minutes at the temperature and about 150 degrees at the later stage to form a flame retardant film cured for about 15 minutes + 15 minutes. In Experiment 4, as shown in Fig. 4, a composition including 20 g of the flame retardant, 2 g of the flame retardant additive, 13.7 g of the expanded expandable graphite, 20.5 g of enamel made of a silicone resin, 8 g of an acrylic resin and 28 g of a xylene- To form a flame retardant film which is cured at a temperature of about 100 ° C. for about 10 minutes and then for about 15 minutes at a temperature of about 150 ° C. for about 15 minutes. As a result of burning the flame retardant film of Experiments 1 to 4, as shown in Fig. 4, the flame retardant film of Experiment 4 exhibited not only the surface state but also the amount of expansion of the expandable expanded graphite and the degree of re- It can be seen that it is excellent.

The enamel may be preferably made of a silicone resin so that the flame retardant film formed by applying the composition of the present invention is smooth, stretchable, rolled or folded, transported, and stored. Further, the silicone enamel can be said to be more preferable because it hardly deforms even at a low temperature. As described above, in the case of Figs. 2A to 2C, a silicone resin is used as the enamel. Fig. 5 shows the same composition except for the enamel as compared with the flame retardant film of Figs. 2A to 2C, and an acrylic resin was used as the enamel. When the enamel is used as the acrylic resin, the adhesive strength is strong, but hardness is too high at the time of curing, so that it is difficult to roll by the roll. When the enamel is placed in the freezing chamber, the hardness becomes higher and becomes harder. Therefore, the enamel may be more preferably a silicone resin.

The enamel additive is added to improve the adhesiveness in the addition of powder enamel, and may be made of an acrylic resin. 2A to 2C show the case where the above-described enamel additive is not used. It can be seen that the flame-retardant film 2 is deteriorated in adhesiveness and can be easily removed even if it is pushed by hand from the end portion. Also, since the viscosity is too high, Can be found. On the other hand, in Experiment 5, a composition comprising 15 g of the flame retardant, 7 g of the flame retardant additive, 13.7 g of the expanded expandable graphite, 20.5 g of the enamel made of the silicone resin, 5 g of the enamel additive of the acrylic resin and 30 g of the xylene- And is cured at a temperature of about 100 ° C. for about 10 minutes and then for about 15 minutes at a temperature of about 150 ° C. for about 15 minutes to form the flame retardant film. Experiment 6 was the same as Experiment 5 except that the enamel additive amount was increased to 8 g, Experiment 7 was compared with Experiments 5 and 6, and the amount of the enamel additive was increased to 12 g, Do. Compared with the flame retardant film shown in FIGS. 2A to 2C, Experiments 5, 6 and 7 show that the adhesive strength can be improved by further including the enamel additive. In Experiments 5, 6 and 7, however, it was found that the higher the amount of the enamel additive, the better the adhesive strength, but the harder it is, and therefore the experiment 6 is more preferable considering both the adhesive strength and the flexibility Able to know. It is preferred that the enamel additive is most recently admixed with the composition of the present invention to achieve good adhesion.

The solvent for controlling the viscosity of the composition of the present invention may be at least one selected from the group consisting of xylene, IPA (isopropyl alcohol) and ethanol.

On the other hand, when the composition of the present invention further contains less than 1% by weight of the platinum catalyst, curing is accelerated during curing, and the curing time can be shortened. In addition, the composition of the present invention may further comprise less than 1% by weight of a crosslinker, thus promoting the leg-occlusion of the silicone series and accelerating the cure faster.

The flame-proofing mechanism according to an embodiment of the present invention constructed and configured as described above will be described in more detail with reference to FIG.

5 (a), when the flame retardant film 20 of the bonding face 10 to which the composition of the present invention is applied comes into contact with the flame retardant film, first, the resin of the flame retardant film of the bonding face 10 is softened The dissolution process proceeds. Next, as shown in FIG. 5 (b), the bubble generation process and the expansion process proceed. That is, the bubbling process is a process in which the bubbling acidic catalyst in the flame retardant film composition of the bonding surface 10 is thermally decomposed to produce an incombustible gas and a mineral acid. In the expansion process, the mineral acid and the carbide-forming agent react with each other due to continuous contact of the blowing agent, so that the expandable expanded graphite is foamed and expanded while the expanded expanded graphite is burned. Next, as shown in FIG. 5 (c), the heat insulating layer generation process and the refractory process proceed. The heat insulating layer forming process forms a thick foam layer 11 on the flameproofing layer 10 due to foaming of the expandable expanded graphite and the heat shielding layer 11 protects the combustible 30 The refractory process is performed to prevent the flame transfer to the combustible material 30 or to prevent the combustible material 30 from melting.

As described above, since the flame-retardant film of the bonding surface 10 forms the thick foam layer 11, there is no possibility that fire occurs in the carbonized portion which is in contact with the flame. Further, even if the bonding surface 10 is carbonized by the use of a non-halogenated flame retardant agent and the use of the flame retardant additive, dust and noxious gas are not generated, flexibility can be maintained without thermal curing by using the enamel, It can be easily stored and transported by folding or folding several times.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It should also be understood that many modifications and variations are possible without departing from the scope of the invention, as would be understood by one of ordinary skill in the art.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It should also be understood that many modifications and variations are possible without departing from the scope of the invention, as would be understood by one of ordinary skill in the art.

One ; Fabric 2; Flame retardant film
10; Abutment surface 20; Boil
30; combustibles

Claims (6)

In a fire-retardant composition containing graphite,
The composition
A flame retardant additive, 3 to 12 wt% enamel additive, and 18 to 32 wt% solvent, based on the total weight of the flame retardant additive, 5 to 25 wt% of the flame retardant, 1 to 15 wt% of the dustproof flame retardant additive, 10 to 32 wt% Wherein the dust-preventing flame retardant additive is a mixture comprising a melamine polyphosphate flame retardant and a melamine cyanurate flame retardant. The method according to claim 1,
Wherein the flame retardant is a mixture comprising 35 to 45% by weight of ammonium polyphosphate, 12 to 25% by weight of aluminum hydroxide, and 25 to 35% by weight of graphite. A fire retardant composition comprising: The method according to claim 1,
Wherein the enamel is made of a silicone-based resin. The method according to claim 1,
Wherein the enamel additive is made of an acrylic resin. The method according to claim 1,
Wherein the solvent comprises at least one of xylene, IPA (isopropyl alcohol), and ethanol. 6. The method according to any one of claims 1 to 5,
Lt; RTI ID = 0.0 > 1% < / RTI > by weight of platinum catalyst.

Images