KR20050012942A - The compositions and manufacturing process of coatings that represents antiflammability, anticombustibility, water repellency on the surface of wood materials and it's treated materials - Google Patents

Abstract

PURPOSE: Provided are a water-soluble fireproof composition, a flame retardant and water repellent coating agent composition, their preparation methods, and a ligneous material prepared by coating the composition which does not elute a fireproof agent when exposed to atmosphere, prevents the spreading of fire and is water repellent. CONSTITUTION: The water-soluble fire proof composition comprises 13.9-32 wt% of monoammonium phosphate; 0.1-3 wt% of boric acid; 1-5 wt% of sodium hydroxide; and 60-85 wt% of water. The flame retardant and water repellent coating agent composition is prepared by mixing 27 wt% of water and 3-10 wt% of colloidal silica and adjusting the pH to be 3.0-4.5 by using nitric acid to prepare a solution A; mixing 40-60 wt% of isopropyl alcohol, 6-8 wt% of hydropropyl cellulose solution, 1-5 wt% of n-hexane, 2-5 wt% of methyltrimethoxysilane and 1-5 wt% of decyltrimethoxysilane to prepare a solution B; and mixing the solution A and the solution B and reacting the mixture with stirring for 2 hours.

Description

The composition and manufacturing process of coatings that represents antiflammability, anticombustibility, water repellency on the surface of wood materials and it's treated materials}

The present invention relates to a coating composition for imparting flame retardancy, flame retardancy and water repellency to a surface of veneer or wood material, and a wood material coated with the compositions.

In general, the interior design of the building, the interior of the interior using a lot of wood, but the fire has a low flash point in the case of fire has a problem that spreads rapidly, recently wood texture on the surface of metal, plastic, MDF, etc. The method of adhering the veneer film which has a is mainly used.

This interior construction method is composed of a method of attaching the veneer film on the surface of the various materials using the adhesive, the target surface, this method is relatively widely used because it is easy to construct the work can be quickly finished.

However, in case of synthetic resin-based veneer film, it is easy to burn in case of fire, and there is a problem that a human accident increases due to toxic gases and toxic substances discharged from the synthetic resin film.

As an example of the conventional wood flame retardant treatment, water-soluble inorganic salts were dissolved in water, and this aqueous solution was impregnated with wood and used after drying. Discoloration or flame retardancy is reduced.

In addition, the conventional wood preservatives contain heavy metals such as arsenic, dichromic acid, copper compounds or toxic substances, which are not only harmful to the human body, but also become environmental pollution sources related to water quality.

Republic of Korea Patent Publication No. 1999-0046366 (published date 1999.7.05) "a non-combustible office furniture fabric manufacturing method and manufacturing method" is also described in detail.

The present invention was devised to solve the above problems, and an object of the present invention is a coating composition for imparting flame retardancy, flame retardancy, water repellency, and antiseptic property to wood materials such as veneer film or wallpaper, and coating the compositions thereof. To provide a wood material.

Means for solving the object of the present invention is to prepare an inorganic salt aqueous solution having an ammonium group in a water-soluble flame retardant first to dry, then to alkoxy silane-based coating on the surface and to dry the process, the performance of the flame retardant It is possible to obtain a composition having excellent flame retardant effect because the component is not eluted for a long time, and has properties such as flame retardancy, water repellency, etc. of the alkoxy silane-based coating composition.

Of course, depending on the application, only the water-proof flame retardant (first solution) may be applied when only the flame retardant performance is required, and only the alkoxy silane-based coating agent (second solution) may be applied when the flame retardancy and water repellency are required rather than the flame retardant performance.

Hereinafter, a method for preparing a flame retardant, flame retardant, and water repellent coating according to the present invention and a wood material coated with the composition will be described in detail.

First, to prepare a water-soluble flame retardant composition, a first solution having the following formulation is prepared.

<First Solution Preparation Example>

As a compounding ratio (water-soluble flame retardant composition) of a 1st solution; It can be prepared by mixing 13.9 to 32% by weight of ammonium monophosphate, 0.1 to 3% by weight of boric acid, 1 to 5% by weight of sodium hydroxide, and 60 to 85% by weight of water.

The phenomenon according to the increase and decrease of the compounding ratio of the above preferred embodiment appears as follows.

If the amount of ammonium monophosphate is 10% by weight or less, it is difficult to expect sufficient flame retardant performance, and if it is 25% by weight or more, it will precipitate on the surface after coating. More preferred examples of the above water-soluble flame retardant are ammonium phosphate monobasic 19% by weight, boric acid 0.1% by weight, sodium hydroxide 1% by weight, water 79.9% by weight.

The water-soluble flame retardant coating agent (first solution) prepared through the compounding ratio as described above may be used independently to exhibit a flame retardant effect, and a coating method such as spray, roll, or deposition may be used.

On the other hand, to prepare a composition having flame retardancy and water repellency, the following second solution is prepared.

<Second Solution Preparation Example>

As a compounding ratio of the 2nd solution (composition which has flame retardance and water repellency); The first step is to prepare a solution of 3 to 10% by weight of colloidal silica (HS40, DUPONT) to 27% by weight of water and then adjust the pH to 3.0 to 4.5 with nitric acid (reagent, Duksan Chemical) as A solution. ;

Isopropyl alcohol 40 to 60% by weight, hydropropyl cellulose solution (1.5% solids, isopropyl alcohol solvent) 6 to 8% by weight, normal nucleic acid 1 to 5% by weight, methyltrimethoxysilane (Tni 8113 Toshiba) 2 A second step of preparing a mixed solution of -5 wt% and 1-5 wt% of decyltrimethoxysilane (KBM3103C, Shin-Etsu) as a B solution;

The A and B liquids are mixed and then stirred for 2 hours to use a product prepared by reacting. In addition, when the above mixing ratio is increased or decreased, the following phenomenon appears.

When the content of colloidal silica is 2% or less, the drying rate is decreased. When the content of colloidal silica is 7% or more, the water resistance is decreased. When the content of decyltrimethoxysilane is 1% or less, the water repellency is decreased.

As a more preferable compounding ratio of the second solution; As a mixing ratio of the liquid A and liquid B, 6% by weight of colloidal silica was mixed with 27% by weight of water, and then A solution was prepared by adjusting the pH to 3.5 with nitric acid, and isopropyl alcohol 45.5% by weight of a hardpropyl cellulose solution. 7 wt%, 3 wt% normal hexane, 8.5 wt% methyltrimethoxysilane and 3 wt% decyltrimethoxysilane were mixed and stirred for about 2 hours to prepare a second solution.

As a flame retardant and flame retardant / water-repellent coating process using the first solution and the second solution prepared as described above, after applying the first solution to the surface of the first coating material (wood veneer, wood material, etc.), the temperature is in the range of 40 to 80 ° C. It is dried for about 5 minutes. After applying the second solution in a second step and drying for about 5 to 20 minutes in the range of 50 ~ 120 ℃ to complete the production of a composition product having flame retardant and flame retardant, water-repellent.

<Performance evaluation>

1. The case where only the first solution is coated, that is, the case where the flame-retardant treatment is applied.

1) Composition ratio by unit (unit: weight%)

Example Ammonium Phosphate Sodium hydroxide Boric acid water Example 1 19.0 One 0.1 Remainder Example 2 5 0.5 0.1 Example 3 30 0.8 0.1

2) Test condition and method: Micro burner method

Test Items result standard Example 1 Example 2 Example 3 Afterglow time (sec) 0 0 0 Within 10 Residual time (seconds) 0 20 10 Within 30 Bullet area (㎠) 23 60 51 Within 50 Carbonization Length (cm) 6 30 20 Within 20

2. In the case where the second solution is coated after the coating of the first solution (Example 1) is coated, that is, the flame-retardant and water-repellent treatments are as follows.

1) The first solution was used as the product of the formulation of <Example 1>,

2) The second solution was evaluated according to the following examples (unit: weight%).

division Colloidal silica (% by weight) Decyltrimethoxysilane (% by weight) Example 1 6 3 Example 2 3 0.5

* The composition of the remaining raw materials is according to the above <Second Solution Preparation>

* Test Condition Light Method: Microburner Method

Test Items result standard Example 1 Example 2 Afterglow time (sec) 0 0 Within 10 Residual time (seconds) 0 0 Within 30 Bullet area (㎠) 21 24 Within 50 Carbonization Length (cm) 7 15 Within 20

* Water repellency test (Gonyer meter)

* Result Analysis

As confirmed in the above experiment, when the coating agent (first solution) prepared by the water-soluble flame retardant manufacturing method and the coating agent (second solution) prepared for water repellent and flame retardant were applied to the surface of the wood material, It has been confirmed that the coal surface area has been greatly reduced to meet the specifications, and the water repellency is shown in the photo above, so that the surface of the wood is changed to superhydrophobic, so that the surface tension is increased and water is not absorbed and water droplets form on the surface. When the water repellency is very excellent.

On the other hand, the flame retardant, flame retardant, water-repellent coating agent according to the present invention and the nose product produced through the test by the Disaster Prevention Testing Institute was able to confirm the following results (flame retardant test (Experiment 1), ship interior material test ( Experiment 2)

* Experiment 1

-Test Name: Patterned Stainless Steel Tube

-Test use: Performance check

-Test method: KS F 2271-1998 (Test method for flame retardancy of interior materials and structures of buildings)

- Test result

What can be seen in the above table, satisfies the criteria of the flame retardant class 2 test, in particular, it can be confirmed that there is no harmful gas generation in the event of fire shows the ability to minimize the damage to life.

* Experiment 2

-Test name: veneer

-Test use: Performance check

-Test method: IMO RES. A 653 (16)

- Test result

What is confirmed in the above table is the flame propagation test standard for shipboard timber products prescribed by the Society of Classification Society of England.

As described above, the flame-retardant, flame-retardant, water-repellent coating composition and the wood material coated with the composition presented in the present invention does not elute the flame retardant when exposed to the atmosphere after the flame-retardant treatment, and the flame retardant treatment by coating only the first solution It can be performed independently, and the second solution is coated on this surface to impart flame retardancy, which prevents the spread of flame in case of fire, and it has excellent water repellency. It can solve problems such as dissolution and dropping of flameproof components.

Claims (7)

In the water-soluble flame retardant manufacturing method, A water-soluble flame retardant composition prepared by mixing 13.9 to 32% by weight of ammonium monophosphate, 0.1 to 3% by weight of boric acid, 1 to 5% by weight of sodium hydroxide, and 60 to 85% by weight of water. The water-soluble flame retardant composition according to claim 1, wherein the water-soluble flame retardant comprises 19% by weight of ammonium phosphate monobasic, 0.1% by weight of boric acid, 1% of sodium hydroxide, and 79.9% by weight of water. In the method for producing a flame retardant and water repellent coating composition, Mixing the colloidal silica 3-10 wt% with 27 wt% of water, and then adjusting the pH to 3.0-4.5 with nitric acid as a solution A; 40 to 60% by weight of isopropyl alcohol, 6 to 8% by weight of hydropropyl cellulose solution, 1 to 5% by weight of normal nucleic acid, 2 to 5% by weight of methyltrimethoxysilane, 1 to 5% by weight of decyltrimethoxysilane Preparing a solution in liquid B; Flame retardant and water-repellent coating composition comprising a third step of reacting by mixing the solution A to solution B after stirring for 2 hours. 4. A solution according to claim 3, wherein 6% by weight of colloidal silica is mixed with 27% by weight of water as a mixing ratio of solution A and solution B, and then pH A is adjusted to 3.5 with nitric acid, and 45.5 weight of isopropyl alcohol. A flame-retardant and water-repellent coating composition prepared with a mixed solution of 7% by weight of the% hardpropyl cellulose solution, 3% by weight of normal hexane, 8.5% by weight of methyltrimethoxysilane, 3% by weight of decyltrimethoxysilane. A flame retardant wood material prepared by applying the composition prepared according to claim 1 to a wood material and then drying for 1 to 8 minutes in a temperature range of 40 to 80 ° C. A wood material imparted flame retardancy and water repellency produced by applying the composition prepared according to claim 3 on a wood material and drying for 5 to 20 minutes at a temperature range of 50 to 120 ° C. The composition prepared according to claim 1 is applied to the surface of the first coating material and dried for 1 to 5 minutes at a temperature range of 40 to 80 ° C., and then the composition prepared according to claim 3 is applied to the second 50 to 120 degrees. Flame retardant, flame retardant and water repellent wood materials prepared by drying for about 5-20 minutes in the range of ℃.