KR100495159B1 - Transparent And Fireproof Paint Composition - Google Patents

Abstract

Disclosed are a transparent flame retardant paint composition which can be painted on wood and plywood, which are combustible materials, and a coating film formed using the same. The composition is 18-36% by weight rubber rubber resin, 7-14% by weight phenolic resin, 0-18% by weight vinyl copolymer resin, 5-10% by weight of liquid paraffin chloride, 0.5-1.0% by weight of heat stabilizer and antifoaming agent % And 40-50% by weight of an organic solvent. The composition is coated onto the substrate, but the coating and drying is performed to form a coating film such that the thickness of the dry coating film is about 80-100 microns. In the event of a fire, the painted coating is foamed by heat or flame to form a heat insulating layer, thereby blocking the heat and flame to delay the rapid propagation of the fire.

Description

Transparent Flame Retardant Paint Composition

The present invention relates to a foamable transparent flame retardant coating composition and a coating film obtained by coating the same. More specifically, the present invention relates to a foamed transparent flame retardant coating composition and a coating film obtained by coating the same. It relates to a composition of a transparent flame retardant paint of a component type or a three component type.

Non-flammable materials that do not easily burn in the event of fire include non-combustible materials such as asbestos or gypsum boards containing glass fibers or compressed boards compressed at high pressure. However, these are industrial products produced to a certain standard, and are not only difficult to use where curved surfaces are required, but they are also vulnerable to impact. In addition, the material itself is not high-quality, it is not suitable as a finishing material of the interior decoration that requires high quality, there is a disadvantage that a considerable manpower and economic burden additionally occurs for this treatment.

In addition to the non-combustible interior materials described above, there are paints which add flame retardancy by adding a flame retardant such as a phosphorus compound or the like as a paint type nonflammable material. This is advantageous because it is easier to process than the board type and is not dependent on the shape of the object to be applied. However, since the paint is mainly a colored paint with a unique color, it is not suitable for interior decoration such as a building using high-quality combustible materials such as solid wood or veneer or high-quality wood furniture for a luxurious interior decoration. There is.

Therefore, in the present invention, in order to solve the above problems, it is possible to apply by applying paint, roller, spray, etc. 3-4 times to the structure or interior decoration made of combustible materials such as wood and plywood, etc. In addition, to provide a transparent flame retardant coating composition that can fully utilize the aesthetic benefits of wood.

It is another object of the present invention to provide a coating having a flame retardant performance that delays initial ignition in a fire by obtaining the composition by coating the dry coating to a thickness of about 80-100 microns.

In order to achieve the above object, in the present invention, 18-36% by weight of chlorinated rubber resin, 7-14% by weight of phenolic resin, 0-20% by weight of vinyl copolymer resin, 5-10% by weight of liquid paraffin chloride, heat stabilizer And it provides a transparent flame retardant paint composition comprising a defoaming agent 0.5-1.0% by weight and an organic solvent 40-50% by weight.

Another object of the present invention described above is achieved by a flame retardant transparent coating formed by coating the composition on a material requiring flame retardant performance so as to have a dry coating thickness of about 80-100 μm.

The transparent flame retardant paint composition according to the present invention is a transparent paint composed of a two-component or three-component system using a chlorinated rubber resin as a main resin and a phenolic resin and a vinyl chloride / isobutyl ether-based vinyl copolymer as an auxiliary resin. By coating the phosphor wood and plywood, etc., when the fire occurs, the coated film is foamed by heat or flame to form a heat insulation layer, thereby blocking heat and flame to delay the rapid propagation of fire.

Hereinafter, the present invention will be described in more detail.

The composition of the present invention contains a rubber chloride-based resin as the main developer. It is a white fine solid powder with a 64-66% chlorine content. Such chlorinated rubber-based resins are colorless, odorless, non-flammable materials having alkali resistance and acid resistance, and are excellent in adhesion and foaming properties. The content of the rubber chloride-based resin is in the range of 18 to 36% by weight based on the total amount of the composition. This is because if the content of the resin is less than 18% by weight, the foam layer is weak and the flame retardant performance is not preferable. If the content of the resin exceeds 36% by weight, cracks are severely generated in the dry coating film, which is not preferable because of poor appearance.

The composition of the present invention contains a phenolic resin. The phenolic resin is a solid substance having a glass transition temperature of about 70 ° C. and an acid value of 40-46 as a polymer made of butylphenol formaldehyde. These phenolic resins are referred to as so-called phenolic resins and have excellent adhesion and promote the hardenability and foamability of chlorinated rubber resins. The content of the phenolic resin is in the range of 7 to 14% by weight based on the total amount of the composition. This is because if the content of the resin is less than 7% by weight, the dry coating is not strong, and if it is more than 14% by weight, the flame retardant performance is remarkably poor, which is not preferable.

The composition of the present invention may optionally also comprise a vinyl-based resin. It is a vinyl chloride and isobutyl ether vinyl copolymer, a white powdery resin having a glass transition temperature of about 80 ° C. Vinyl-based copolymers play a role in increasing compatibility with other resins and providing flexibility to dry coatings. The vinyl resin is to be added in an amount of 20% by weight or less based on the total amount of the composition. If the content thereof exceeds 20% by weight, the self-extinguishing property is not preferable because it is a factor that significantly lowers the flame retardant performance.

The composition of the present invention also contains liquid paraffin chloride. This softens the surface of the dry coating film and prevents cracking caused by shrinkage of the coating film after drying. Its content is in the range of 5 to 10% by weight, based on the total amount of the composition. This is because if the content thereof is less than 5% by weight, the flexibility of the dry film is inferior, and if the content is more than 10% by weight, the drying speed of the film is slowed down and the texture is left undesirably.

The composition according to the present invention may further include various additives as necessary, for example, may include a heat stabilizer, an antifoaming agent, and the like.

Hereinafter, the foamable transparent flame retardant paint composition according to the present invention will be described in more detail with reference to specific examples. However, it should be understood that the scope of the present invention is not limited to these examples. In the following examples, the content means parts by weight.

<Example 1>

As an organic solvent, 32 parts of xylene, 10 parts of methyl ethyl ketone, and 10 parts of ethyl acetate were added 32 parts of Superchlon 510, a chlorinated rubber resin (manufactured by Sanyo Kokusaku PU Co., Ltd.), and stirred until dissolved completely with a stirrer having a rotation speed of 2000-3000 RPM Subsequently, 11 parts of phenolic resin Beckacite 1001 (manufactured by Gangnam Hwaseong Co., Ltd.) was charged and dissolved in a solvent. At this time, since the phenolic resin is in the form of a solid piece, the dissolution time is shortened by pulverizing finely with a pulverizer. When the two resins are in a completely uniform solution, 7 parts of chlorinated parraffin 52 (manufactured by ICI) as a plasticizer, 0.5 parts of Inbraflex A-6 (manufactured by INBRA) as a heat stabilizer, and BYK-066 (manufactured by BYK) as a defoamer 0.5 parts of the transparent flame retardant paint composition was prepared.

<Example 2>

As an organic solvent, 29 parts of xylene, 10 parts of methyl ethyl ketone, and 10 parts of ethyl acetate were added 29 parts of Superchlon 510 (manufactured by Sanyo Kokusaku PU) with a chlorinated rubber resin and stirred until completely dissolved in a stirrer with a rotation speed of 2000-3000 RPM. Thereafter, 14 parts of Beckacite 1001 (manufactured by Gangnam Hwasung Co., Ltd.) was added and stirred with a phenolic resin to dissolve in a solvent. When the two resins are in a completely uniform solution, 7 parts of chlorinated parraffin 52 (manufactured by ICI) as a plasticizer, 0.5 parts of Inbraflex A-6 (manufactured by INBRA) as a heat stabilizer, and BYK-066 (manufactured by BYK) as a defoamer 0.5 parts of the transparent flame retardant paint composition was prepared.

<Example 3>

As an organic solvent, 27 parts of xylene, 10 parts of methyl ethyl ketone and 10 parts of ethyl acetate were charged with 27 parts of Superchlon 510 (manufactured by Sanyo Kokusaku PU) with a chlorinated rubber resin and stirred until completely dissolved in a stirrer with a rotation speed of 2000-3000 RPM. Thereafter, 7 parts of Beckacite 1001 (manufactured by Gangnam Hwasung Co., Ltd.) was added and stirred with a phenolic resin to dissolve in the solvent. After completely dissolved, 9 parts of Laroflex MP-45 (manufactured by BASF) was added to the vinyl copolymer resin and stirred. When the three resins became completely homogeneous, 7 parts of a plasticizer, Chlorinated Parraffin 52 (manufactured by ICI), 0.5 parts of Inbraflex A-6 (manufactured by INBRA) as a heat stabilizer and 0.5 parts of BYK-066 (manufactured by BYK) as a defoaming agent were mixed to prepare a transparent flame retardant coating composition.

<Example 4>

As an organic solvent, 23 parts of xylene, 10 parts of methyl ethyl ketone, and 10 parts of ethyl acetate were added 23 parts of Superchlon 510 (manufactured by Sanyo Kokusaku PU) with a chlorinated rubber resin and stirred until completely dissolved in a stirrer with a rotation speed of 2000-3000 RPM. Thereafter, 7 parts of Beckacite 1001 (manufactured by Gangnam Hwasung Co., Ltd.) was added and stirred with a phenolic resin to dissolve in the solvent. After completely dissolved, 13 parts of Laroflex MP-45 (manufactured by BASF) was added to the vinyl copolymer resin and stirred. When the three resins became a completely homogeneous solution, 7 parts of plasticizer Chlorinated Parraffin 52 (manufactured by ICI) was heated. 0.5 parts of Inbraflex A-6 (manufactured by INBRA) as a stabilizer and 0.5 parts of BYK-066 (manufactured by BYK) as a defoaming agent were mixed to prepare a transparent flame retardant coating composition.

Example 5

As an organic solvent, add 18 parts of Superchlon 510 (manufactured by Sanyo Kokusaku PU) with a chlorinated rubber resin to 29 parts of xylene, 10 parts of methyl ethyl ketone, and 10 parts of ethyl acetate, and stir until dissolved completely with a stirrer of 2000-3000 RPM Thereafter, 7 parts of Beckacite 1001 (manufactured by Gangnam Hwasung Co., Ltd.) was added and stirred with a phenolic resin to dissolve in the solvent. After completely dissolved, 18 parts of Laroflex MP-45 (manufactured by BASF) was stirred with a vinyl copolymer resin. When the three resins were in a completely uniform solution, 7 parts of plasticizer Chlorinated Parraffin 52 (manufactured by ICI) was heated. 0.5 parts of Inbraflex A-6 (manufactured by INBRA) as a stabilizer and 0.5 parts of BYK-066 (manufactured by BYK) as a defoaming agent were mixed to prepare a transparent flame retardant coating composition.

In order to observe the flame retardant performance and coating film properties of the composition prepared according to Examples 1 to 5 was carried out as follows.

Experimental Example

The composition prepared according to Example 1-5 was coated on a plywood to have a dry coating thickness of about 100 microns and dried to prepare a dried coating film. The flameproof performance of the coating film was measured by the following method. There are four measures of flame retardant performance.

1) Afterflame time: It means the time from the removal of burner's flame to the end of burning state after raising the flame. The standard value is 10 seconds or less.

2) Residual Time: The time from the removal of the burner's flame to the end of the combustion without raising the flame. The standard value is 30 seconds or less.

3) Carbonization Area: It refers to the carbonization area where the plywood is burned after heating test for 2 minutes.

4) Carbonization length: Refers to the longest length of carbonization when plywood is burned after heating test for 2 minutes.

Flame retardant performance of each composition was measured by brush painting on KS F 3101 (normal plywood) secondary plywood (190 mm x 90 mm, 4.4 mmt or less), drying for 7 days at room temperature, and heating test for 2 minutes with a combustion tester. The carbonization area was measured using a pranimeter having a minimum scale of 0.1 cm 2 or less. The test results are shown in Table 1 below.

Flame retardant performance measurement result of transparent flame retardant paint composition (dry coating thickness: 100㎛) division Example 1 Example 2 Example 3 Example 4 Example 5 Afterglow time (sec) 0 0 3 2 0 Residual time (seconds) 0 0 0 0 0 Surface area (cm ² ) 22 41.2 37.1 28.7 20.4 Carbonization length (cm) 5.5 9.2 7.1 7.2 5.1

Through the results shown in Table 1, the flame retardant paint composition according to the present invention can be confirmed that the flame retardant performance is very excellent by showing a value within the reference value in all four items given.

The composition of the present invention as described above is a flame retardant coating composition prepared by using a chlorinated rubber resin as a main resin and optionally a phenolic resin and optionally a vinyl chloride / isobutyl ether-based vinyl copolymer as an auxiliary resin, which is a combustible material wood If the coating film is formed by coating the coating film so as to have a dry coating thickness of about 80-100 microns, the fire may delay the initial ignition by forming a heat insulation layer by foaming the coating film during a fire. It is a transparent flame retardant paint that can exhibit excellent flame retardant performance and exhibit the aesthetic advantages of combustible materials such as wood.

Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be appreciated.

Claims (5)

18-36% by weight of chlorinated rubber resin with 64-66% by weight of chlorine group, 7-14% by weight of phenolic resin consisting of butylphenol formaldehyde, vinyl copolymer resin copolymerized with vinyl chloride and isobutyl ether 5-10% by weight, liquid paraffin chloride 5-10% by weight, thermal stabilizer 0.3-0.6% by weight, antifoaming agent 0.2-0.4% by weight and organic solvent 40-50% by weight, the phenolic resin has a glass transition temperature Is a solid flat compound having an acid value of about 70 to 60 ° C., and the vinyl copolymer resin has a glass transition temperature of about 80 ° C. delete delete delete A transparent flame retardant coating film formed by coating the composition according to claim 1 to a dry coating thickness of about 80-100 μm on a material requiring flame retardant performance.