KR102010557B1 - Fire retardant binder compositions for making eco-friendly functional particle board, fire retardant binder using the same, and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a flame-retardant binder composition for manufacturing a particle board and a functional, eco-friendly particle board using a binder manufactured by using the same. More specifically, the present invention relates to: a flame-retardant binder which can greatly improve flame retardancy of the particle board, and has anti-microbial properties, anti-fungal properties, bactericidal properties, deodorizing properties, tensile strength, bursting strength, and flexure strength, and thus is used to manufacture the particle board that prevents and/or minimizes formaldehyde emissions; and the functional, eco-friendly particle board manufactured by using the same.

Description

FIRE RETARDANT BINDER COMPOSITIONS FOR MAKING ECO-FRIENDLY FUNCTIONAL PARTICLE BOARD, FIRE RETARDANT BINDER USING THE SAME, AND MANUFACTURING METHOD THEREOF}

The present invention relates to flame retardant binders suitable for use in the production of particle boards, to compositions used in the preparation thereof, and to methods of making the same.

The particle board (hereinafter referred to as PB) developed in the past is used to produce wood from solid wood, crush the remaining waste material, and make it into small pieces, or break down building waste materials, furniture waste materials, wood by-products, etc. It is a processed material made by mixing the adhesive and pressing it at high temperature and high pressure. The amount of waste wood used in the manufacture of PB is 11,260,400 m 3, which is 40% of the annual domestic timber demand (as of 2015) of 28,151,000 m 3.

In addition, in order to prepare a PB, wood chips are generally prepared by agglomeration with a thermosetting synthetic resin system which is an adhesive bond. When prepared as described above, formaldehyde release phenomenon, which is an atopic skin causing substance, may occur, and organic volatile organic substances (VOCs) may be released from a binder used for attaching sheet or film on the surface of PB. PB perception is not very good due to the shortcomings of fatal toxins.

PB is made of waste wood, and the strength of wood itself is reduced, so it is discolored, worn and cracked due to decay and weather, and even the strength and durability of the termites and salted insects are weak, so that they burn well. It can be a waste tree. In addition, the amount of cellulose and hemicellulose that absorb or moisturize water molecules (H ₂ O), which occupy more than 70% of the cell wall, depends on the relative humidity and temperature, but the moisture absorption is determined by the PB weight. There is also a theory that up to 30%.

In addition, furniture, desks, kitchen furniture (sinks), built-in furniture such as PB over time, the finishing film or sheet paper often peels off due to the adhesive strength. When moisture is generated inside the PB plate as the peeled part, the chip of the PB expands, causing a problem of rapid weakening of the bonding force, and a problem of hygiene due to breeding of bacteria and mold. Therefore, there have been attempts to manufacture and improve functional PB to compensate for the above problems, but the existing developed products have the effect of reducing formaldehyde and / or VOCs generated from particle boards, but are vulnerable to fire or large amounts in case of fire. There was a problem in that the marketability was inferior due to insufficient improvement of the effect range such as the delay of smoke. Accordingly, there is a need for a new particle board material and a functional particle board using the same, which can increase the marketability while minimizing contaminants emitted from the particle board.

Republic of Korea Publication No. 10-2013-0074504 (public date 2013. 07. 04)

Accordingly, the present inventors have diligently tried to provide a particle board overcoming the disadvantages of the conventional particle board, when producing a particle board using the composition proposed in the present invention, while having a high durability and flame retardancy and eco-friendly characteristics, It was confirmed that the particle board having the excitation can be produced, and thus, the present invention was completed. That is, an object of the present invention is to provide a flame retardant binder for the manufacture of functional eco-friendly particle board and a functional eco-friendly particle board using the same.

The flame-retardant binder composition for producing a functional eco-friendly particle board of the present invention for solving the above problems is a flame retardant; Flame retardant aids; water; And melamine resins.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may include 20 to 25% by weight of the flame retardant, 0.5 to 2.0% by weight of the flame retardant aid, 10 to 15% by weight of water and the balance of the melamine resin.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further include an inhibitor.

In a preferred embodiment of the present invention, the flame retardant binder composition may further comprise a strength enhancer.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further comprise a desiccant.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further include an antibacterial agent.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further comprise a coupling agent.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further include a preservative.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention may further comprise a penetrant.

In a preferred embodiment of the present invention, the flame retardant may include a silane-coated ammonium polyphosphate and ammonium polyphosphate.

As a preferred embodiment of the present invention, the flame retardant may include silane-coated ammonium polyphosphate and ammonium polyphosphate in a volume ratio of 1: 1.5 to 3.0.

In a preferred embodiment of the present invention, the flame retardant auxiliary agent may include one or more selected from ammonium sulfate, ammonium polyphosphate and polyphosphazene.

As a preferred embodiment of the present invention, the flame retardant binder composition of the present invention is 20 to 25% by weight of flame retardant, 0.5 to 2.0% by weight of flame retardant, 0.1 to 5.0% by weight of depressant, 0.3 to 1.2% by weight of strength enhancer, 0.5 to 20% of desiccant 2.0 wt%, antibacterial 1.0-3.0 wt%, coupling agent 0.3-1.2 wt%, preservative 0.05-1.2 wt%, penetrant 0.2-1.0 wt%, water 10-15 wt% and the balance of the melamine resin may be included.

Another object of the present invention relates to a method for manufacturing a flame retardant binder using the flame retardant binder composition, the first step of preparing a flame retardant binder composition of various compositions described above; Mixing the flame retardant binder composition, and then stirring the mixture for 10 to 30 minutes at a stirring speed of 800 to 1,500 rpm to prepare a stirred material; And three steps of aging the agitated mixture in a dark room at 20 to 35 ° C. for 6 to 12 hours.

Still another object of the present invention is to provide a flame retardant binder comprising a mixture of a mixture of the flame retardant binder compositions of various compositions described above.

In addition, another object of the present invention is to provide a particle board including a thermocompression coating of a coating in which particle chips are coated with a flame retardant binder.

Eco-friendly functional particle board (PB) manufactured using the flame retardant binder of the present invention is comparable in strength compared to the PB manufactured using a conventional melamine binder resin, the fine dust generated by breaking the PB during construction, dust generation As the construction environment is comfortable, the productivity is improved, and the moisture absorption of PB decays inside the PB chip, which effectively prevents or minimizes the propagation of odors, bacteria, and molds due to impairment. It has a synergistic effect. It also removes unreacted residual (glass) formaldehyde in the melamine resin (or urea melamine resin) solution and volatile organic compounds (VOCs) released from the adhesive that adheres sheet or film paper to the PB surface as a finish. It is possible to suppress the generation of smoke, and to provide a PB having excellent flame retardancy.

Figure 1 A is a particle chip manufacturing mill for producing PB of the present invention, B is a PB dryer, C is a dry state in the dryer, D is a cutting machine of the PB, E is a photograph taken a PB coating machine.
Figure 2 shows the antimicrobial measurement results of Comparative Preparation Example 1.
Figure 3 shows the antimicrobial measurement results of Preparation Example 1.
Figure 4 shows the results of confirming the mold resistance grade of Comparative Preparation Example 1.
Figure 5 shows the results of confirming the mold resistance grade of Preparation Example 1.
Figure 6 shows the results of confirming the mold resistance of Comparative Preparation Example 1.
Figure 7 shows the results of confirming the mold resistance of Preparation Example 1.
Figure 8 shows the results of confirming the flame retardant (flame-retardant) of the functional eco-friendly PB prepared in Preparation Example 1.
9A to 9D show the results of measuring the smoke density with respect to the radiant heat of Preparation Example 1. FIG.
10A to 10D show the results of measuring the smoke density with respect to the heat of heat of Preparation Example 1. FIG.
FIG. 11 shows the results of confirming removal rates of total volatile organic compounds (TVOC), toluene, and formaldehyde of Comparative Preparation Example 1. FIG.
12 shows the results of confirming the removal rate of the total volatile organic compound (TVOC), toluene (Toluene), formaldehyde (Formaldehyde) of Preparation Example 1.
Figure 13 shows the result of confirming the plane tensile strength of Comparative Preparation Example 1.
Figure 14 shows the result of confirming the plane tensile strength of Preparation Example 1.

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

In general, a variety of binder resins are used for adhesion of particle chips in PB manufacturing. As such binder resins, urea resins, melamine resins (or urea melamine resins), and phenol resins are used. When the melamine resin is cured, it forms a colorless and transparent film. Therefore, the melamine resin is used in the manufacture of floorboards, furniture members, decorative veneers in manufacturing, low pressure melamine, high pressure melamine, high pressure laminate, overlay paper, shape paper, and backing paper. have. The film or coating formed by curing the melamine resin is resistant to water resistance, heat resistance and chemical resistance. In addition, since melamine resin is colorless, transparent and hard, it is widely used for floorboards, roofboards, inner wall materials, crosslinking agents, and PB adhesives.

PB differs somewhat depending on u-type PB, M-type PB, and P-type PB depending on the amount of formaldehyde released, but is generally defined to be less than 5 mg / L based on formaldehyde emission at the time of shipment.

In recent years, it has been further strengthened than the previous formaldehyde emission amount, and is regulated as E0 type when 0.5 mg / L or less, E1 type when 1.5 mg / L or less, and E2 type when 5 mg / L or less, and wood produced in 2009 in Korea. Among plate products, more than 72.1% of PB and 86.2% of MDF were out of KS standard grade, but are gradually changing to E1 and E0 levels. Since standards and regulations on formaldehyde emission have been strengthened, various methods for reducing formaldehyde generation have been attempted, and in the present invention, 0.1 wt% of residual formaldehyde in melamine resin is inherently reduced to E0 grade. It is to provide a flame retardant binder composition and a flame retardant binder for producing PB.

The present invention is a flame-retardant binder composition (hereinafter referred to as "composition") for the production of functional eco-friendly particle board (PB) can be used as the adhesive resin at least one selected from urea resin, melamine resin and phenol resin, preferably It is possible to use melamine resin.

PB is made from processed wood, not wood, and used as furniture waste materials, wood by-products, etc., so that the ignition point is very low, and there is a problem of easily burning. Therefore, the composition of the present invention may include a flame retardant and a flame retardant aid to impart flame retardancy to PB.

As the flame retardant, a general wood flame retardant used in the art may be used, but preferably, one or more selected from silane-coated ammonium polyphosphate and ammonium polyphosphate (water-soluble APP) may be used.

Ammonium polyphosphate (water-soluble APP) has an excellent effect of removing ions of metal ions, and has an excellent effect of dispersing and preventing crystal formation. It prevents precipitation of poorly soluble substances as crystals and has a function of preventing pH change. However, ammonium polyphosphate is problematic in water resistance and may cause a problem of bleeding when placed under high temperature and high humidity conditions. In addition, due to lack of heat resistance, it melts well around 90 ~ 110 ° C., so there is no adhesiveness and solution viscosity at all. In addition, the coating of the melamine-based compound on the surface of the powder of ammonium polyphosphate has a high specific gravity and a good lower precipitation, which may result in poor dispersibility, stickiness, and poor dryness. Therefore, as the flame retardant, it is more preferable to mix two kinds of silane-coated ammonium polyphosphate and ammonium polyphosphate. Ammonium polyphosphate coated (coated) with silane has good dispersibility and precipitation, and may increase the bonding force between particle chips.

Here, the optimum composition ratio for using two kinds of silane-coated ammonium polyphosphate and ammonium polyphosphate as flame retardant is silane-coated ammonium polyphosphate and ammonium polyphosphate in a volume ratio of 1: 1.5 to 3.0, preferably 1: 1.8 to 2.5 by volume More preferably, the mixture is used in a volume ratio of 1: 1.8 to 2.2. At this time, if the ammonium polyphosphate is less than 1.5 vol. Ratio relative to the silane-coated polyammonium, the silane-coated polyammonium phosphate in the composition may be relatively too high, and thus the flame retardancy may be reduced. Since the amount of the coated polyammonium phosphate is relatively small, the mechanical properties of the PB may be lower than that of the appropriate amount of the silane-coated ammonium phosphate.

In addition, the appropriate content of the flame retardant in the composition of the present invention is 20 to 25% by weight, preferably 21.5 to 25% by weight, more preferably 22.5 to 24.5% by weight of the total weight of the composition. At this time, if the flame retardant content is less than 20% by weight may not ensure proper flame retardancy, flame retardancy, when used in excess of 25% by weight of the binder resin prepared by the composition of the present invention due to excessive use, such as permeability to the particle chip It may be good to use within the above range because there may be a problem that other physical properties such as mechanical properties of the PB falls apart.

The composition of the present invention may further comprise a flame retardant aid in addition to the flame retardant. As the flame retardant adjuvant, one or more selected from ammonium sulfate ((NH ₄ ) ₂ SO ₄ ), ammonium polyphosphate and polyphosphazene may be used, and preferably one or more selected from ammonium sulfate and ammonium polyphosphate, Preferably ammonium sulfate can be used. When the flame retardant adjuvant is preferably mixed with additives containing sulfur, polymetaphosphate is produced by pyrolysis during combustion, which is produced by dehydration when it forms a protective layer and when polymetaphosphate is produced. The carbon film which blocks | blocks oxygen can provide high flame-retardant (flame-retardant) property. The content of the flame retardant aid in the composition of the present invention is preferably 0.5 to 2.0% by weight, preferably 0.6 to 1.6% by weight, more preferably 0.75 to 1.40% by weight, in which case the content of the flame retardant aid is less than 0.5% by weight. Too small amount of use may not have an additional flame retardancy improvement effect due to the use of a flame retardant aid, and even if used in excess of 2.0% by weight, no further flame retardant is always effective, it is recommended to use within the above range.

The water in the composition of the present invention is used for mixing between the adhesive resin of the flame-retardant binder and other compositions, and to ensure the proper viscosity of the binder, 10 to 15% by weight, preferably 10 to 13.5% by weight of the total composition, more Preferably, it is preferable to use 10.2 to 12.5% by weight, and in this case, if the water content is less than 10% by weight, there may be a problem in that the composition is not mixed well, and if it exceeds 15% by weight, the water content in the flame-retardant binder prepared This may increase the drying time and poor aging of the mixture of the composition, there may be a problem that the physical properties of the PB made of a flame-retardant binder is inferior.

PB is a processed material made by crushing waste wood, building waste, furniture waste, wood by-products, made into small pieces, mixed with adhesive and compressed at high temperature and high pressure. When a reaction such as dehydration proceeds, a large amount of harmful fumes (gases) are generated, and the probability of high smoke density is very high. Therefore, the composition of the present invention may further include an inhibitor for inhibiting the generation of harmful fumes (gas). As the depressant, a general depressant used in the art may be used. Preferably, crystals prepared by processing two or three selected from boric acid, zinc carbonate, and magnesium hydroxide (Mg (OH) 2) may be used. A crystal prepared by processing boric acid (H ₃ BO ₃ ), zinc carbonate (ZnCO ₃ ) and magnesium hydroxide in a weight ratio of 1: 2.5 to 5: 1.0 to 2.5 is more preferable. Preferably, crystals prepared by processing boric acid, zinc carbonate and magnesium hydroxide in a weight ratio of 1: 3.0 to 4.5: 1.4 to 2.0 can be used as depressants. In addition, the boric acid in the depressant component dissolves well in hot water, shows a weak acid, and has a weak bactericidal action and antiseptic properties. Because of its bactericidal properties, it has a natural insect repellent function, mold growth inhibition and termite resistance. Therefore, when using the depressant, it is possible to increase not only PB smoke, but also flame retardancy, bactericidal, antifungal and termite resistance. In this case, when zinc carbonate and magnesium hydroxide are out of the weight ratio range, the depressant effect may be relatively reduced as compared with the case of using within the weight range.

Such, the depressant is a step of preparing a saturated boric acid aqueous solution by dissolving boric acid in water; Heating the saturated aqueous solution of boric acid, and then dissolving one or two selected from zinc carbonate and magnesium hydroxide in the heated aqueous solution of boric acid, followed by boiling; And cooling and filtration, and then drying the filtrate to obtain white crystals. Three steps may be performed.

The amount of boric acid, zinc carbonate and magnesium hydroxide used may satisfy the weight ratio between these components.

In one preferred embodiment for preparing the depressant used in the present invention, 5 mL (3 g) of boric acid is injected into a beaker filled with 50 mL of water, heated at 80 to 105 ° C. for 20 to 40 minutes, and saturated carbonic acid is used. 10 mL (11 g) of zinc is injected into saturated boric acid solution, and 5 mL (5.5 g) of magnesium hydroxide (Mg (OH) 2) is injected while stirring is continuously performed at 800 to 1,400 rpm. Next, after boiling for 50 to 90 minutes, the mixture is left and filtered for 5 to 8 hours, and then the filtrate is dried to obtain white columnar crystals.

And, the content of the depressant in the composition of the present invention can be used in 0.1 to 5.0% by weight, preferably 0.5 to 2.5% by weight, more preferably 0.6 to 1.0% by weight. In this case, if the content of the depressant is less than 0.1% by weight, the amount of use thereof may be too small to see the depressive effect, and when used in excess of 5.0% by weight, there is a problem that other physical properties of PB are lowered due to the decrease in compatibility with other compositions. There may be.

PB consists of waste remnants after single plate manufacture, waste remnants of lumber, chips for pulp, large rice of lumber, various sawdust, waste remnants after carpentry, waste remnants after construction of wooden houses, and sample house remnants of apartments. When the waste residue is used, the manufacturing conditions are weak in strength, and shrinkage and expansion may occur due to moisture fluctuations. In order to improve this disadvantage, the composition of the present invention may further include a strength enhancer so as to coat the weakened portion of the particle chip to exhibit a tensile strength reinforcement, water resistance, moisture resistance, and antiseptic function. As the strength reinforcing agent, a mixed powder obtained by mixing aerogel and feldspar may be used. Preferably, the airgel and feldspar are mixed in a weight ratio of 1: 0.40 to 1.00, and more preferably, the airgel and feldspar are mixed in a weight ratio of 1: 0.60 to 0.85. Mixed powders may be used.

The airgel is a highly porous nanostructure having a specific surface area of 600 ~ 1,500 m ² / g, composed of nanoparticles of 1 ~ 50 nm size, has a porous structure and excellent insulation, sound insulation, shock-absorbing power This is excellent and can prevent cracking, and the strength is increased by mixing with feldspar. In addition, the airgel increases the adhesion to ensure that the particle chip is attached to each other and the flat tensile strength, and prevent thermal deformation and improve the long-term deformation due to the load. Pyrophyllum is rich in fat, has a characteristic of being a refractory material and a filler and well mixed with aerogels.

And, the content of the strength enhancer in the composition of the present invention may be used in 0.3 to 1.2% by weight, preferably 0.5 to 1.0% by weight, more preferably 0.60 to 0.80% by weight. At this time, when the content of the strength enhancer is less than 0.3% by weight, the amount of use is so small that the mechanical strength improvement effect of the PB may not be seen, and when used in excess of 1.2% by weight, other physical properties of the PB may be lowered due to a decrease in compatibility with other compositions. There may be a problem.

PB-processed furniture, desks, kitchen furniture (sinks), built-in furniture, etc., over time, when the sheet or film, which is the finishing material, loses adhesion and generates moisture inside the PB plate, the particle chip expands and bonds rapidly. Weakening and causing problems can occur, and bacteria and fungi can grow and cause hygiene problems. In order to supplement and improve the above problems, the composition of the present invention may further include a desiccant. As the desiccant, a general desiccant used in the art may be used, and preferably a flowable paraffin wax may be used. Flowable paraffin wax can be penetrated into or coated on the surface of the particle chip to improve the moisture resistance of the PB. Flowable paraffin wax can delay moisture content and dimensional change without altering the function of the PB, and improve water resistance and moisture resistance. You can. The content of the desiccant in the composition of the present invention may be 0.5 to 2.0% by weight, preferably 0.5 to 1.6% by weight, more preferably 0.7 to 1.0% by weight. In this case, when the content of the desiccant is less than 0.5% by weight, the amount of use thereof is too small, so that the water resistance and moisture resistance of the PB may not be improved, and when the content of the desiccant is more than 2.0% by weight, the viscosity of the flame-retardant binder prepared by using the composition increases too much. Therefore, there is a problem in that the compatibility with the particle chip is poor, the permeability to the particle chip of the binder may be a problem, it is good to use within the above range.

In addition, the composition of the present invention may further include an antimicrobial agent to impart antimicrobial, antifungal, bactericidal, deodorant, etc. of PB. The antimicrobial agent may include at least one selected from an organic antimicrobial agent and an inorganic antimicrobial agent, and preferably, an inorganic antimicrobial agent may be used. In addition, the inorganic antimicrobial agent is a mixed nanopowder containing silver (Ag) nanoparticles and titanium dioxide (TiO ₂ ) nanoparticles in a weight ratio of 1: 0.5 to 1.0, preferably silver (Ag) nanoparticles and titanium dioxide ( It is preferable to use a mixed nanopowder containing TiO ₂ ) nanoparticles in a weight ratio of 1: 0.75 to 1.00. Silver (Ag) nanoparticles not only have strong antibacterial and bactericidal properties, but also are used as antibiotics in a wide range of fields, such as odor removal, formaldehyde (CH ₂ O) and VOCs removal, far infrared and anion emission, and mixed with titanium dioxide nanoparticles. By removing the volatile organic compounds released from the residual formaldehyde in adhesive resin and the binder used to attach the sheet or film paper, and the odor generated during the decay process due to the moisture absorption of the waste wood and even the termites and salts Or it can improve the problem that the strength and durability are weakened thereby, deodorizing, insect repellent (preservative) effect can be obtained.

In addition, the content of the antimicrobial agent in the composition of the present invention may comprise 1.0 to 3.0% by weight of the total weight of the composition, preferably 1.5 to 2.7% by weight, more preferably 1.70 to 2.20% by weight, wherein If the antimicrobial content is less than 1.0% by weight, the antimicrobial effect may be insignificant, and even when used in excess of 3.0% by weight, it is uneconomical because there is no increase in the antibacterial effect.

Since the flame retardant binder prepared from the composition of the present invention may be hydrophobic and nonpolar, the binding force with the hydrophilic particle chip may be inferior. In order to improve the chemical bonding between the flame-retardant binder and the interface between the particle chip, the composition of the present invention may further include a coupling agent. Due to the introduction of the coupling agent, it is possible to increase the bending strength and modulus of elasticity, dimensional stability, and impact strength. In addition, it is preferable to use the phosphate acrylic coupling agent as the coupling agent, and the content thereof is 0.3 to 1.2 wt%, preferably 0.5 to 1.2 wt%, more preferably 0.65 to 1.0 wt% of the total weight of the composition. May be%. In this case, when the content of the coupling agent is less than 0.5% by weight, the effect of increasing the physical properties due to the use of the coupling agent may be insignificant, and when used in excess of 1.2% by weight, the viscosity of the flame-retardant binder is increased, and the mixing and permeability of the particle chip is rather high. It is good to use within the above range because there may be a problem of falling and PB flame retardancy.

The composition of the present invention is a preservative in order to effectively suppress the occurrence of moss, microorganisms and other larvae due to corrosion and decay of the PB due to the penetration of moisture, sterilization, pests or mold that rots termite particle chips. It may further include. As the preservative, one or more selected from organic preservatives and inorganic preservatives may be used, preferably inorganic preservatives, and more preferably copper sulfate (CuSO ₄ ) which is an inorganic preservative. In addition, the content of the preservative in the composition of the present invention may be 0.05 to 1.2% by weight, preferably 0.50 to 1.20% by weight, more preferably 0.70 to 1.15% by weight of the total weight of the composition. At this time, when the preservative content is less than 0.05% by weight, the amount of the preservative may be too small to see the preservative effect, and when used in excess of 1.2% by weight, the preservative effect is excellent, but the penetration effect of the flame retardant binder on the particle chip is reduced. There may be a problem that the mechanical properties of the PB is reduced.

The composition of the present invention may further include a penetrant so that the flame retardant binder is evenly penetrated into the particle chip. In this case, as the penetrant, a general penetrating component used in the art may be used, and an anionic alkyl succinate may be used. The amount of the penetrant may be 0.2 to 1.0 wt%, preferably 0.4 to 1.0 wt%, and more preferably 0.65 to 1.00 wt% of the total weight of the composition. In this case, when the amount of penetrant is less than 0.2% by weight, the amount of the penetrant may be too small to see the effect of using it, and even if it is used in excess of 1.0% by weight, there may be no economical improvement effect due to the physical properties of PB. It is good to use in the said range.

Using the composition of the present invention described above it can be produced a flame-retardant binder through the following method.

Flame retardant binder of the present invention comprises the steps of preparing a composition of the various compositions described above; After mixing the composition, to prepare a stirring; And three steps of aging the agitated material to prepare a flame retardant binder.

The composition of step 1 is as described above.

In addition, the stirred material of the second stage may be prepared by stirring the composition of the first stage for 10 to 30 minutes at a stirring speed of 800 to 1,500 rpm, preferably by stirring for 15 to 25 minutes at a stirring speed of 1,000 to 1,350 rpm. At this time, when the stirring speed is less than 800 rpm, the composition components may not be dissolved well, and when the stirring speed exceeds 1,500 rpm, bubbles may occur. And, the stirring time is a relative appropriate stirring time according to the stirring speed.

In addition, step 3 is a step of aging the stirred well with sufficient conditions, the aging for 6 to 12 hours in a dark room of 20 ~ 35 ℃, preferably for 7 to 10 hours in a dark room of 20 ~ 30 ℃ The flame retardant binder of the present invention can be prepared by standing and aged.

The flame-retardant binder of the present invention prepared as described above can be applied to the particle chip to produce a PB, a preferred embodiment, for example, after the particle chip is put into the automatic mixing coating, the flame-retardant binder is added and mixed, flame retardant A step of producing a coating in which the binder is permeated coated on the particle chip; Compressing the coating with a thermocompression press to produce a thermocompression article; Three steps of drying the thermocompression material; to perform a functional eco-friendly particle board.

In the first step, the amount of the flame retardant binder may be 32.5 to 48.7 parts by weight of the composition, preferably 35.0 to 45.0 parts by weight, and more preferably 37 to 43 parts by weight, based on 100 parts by weight of the particle chip. In this case, if the amount of flame retardant binder is less than 32.5 parts by weight, the binder may not be sufficiently coated on the particle chip, and thus the physical properties of the PB may not be good. There can be.

In the second step of pressing, the coating of the first step may be put into a thermopress press having a top plate temperature of 100 to 120 ° C and a bottom plate temperature of 110 to 155 ° C to perform thermocompression at 60 to 80 kgf / cm ² for 5 to 10 minutes. Can be.

Then, after the thermocompression is completed, it can be dried at room temperature (18 ~ 35 ℃) for 1 day to 3 days to produce a functional eco-friendly particle board of the present invention.

Hereinafter, preferred examples and experimental examples are presented to help understand the present invention. However, the following examples and experiments are provided only to more easily understand the present invention, and the contents of the present invention are not limited by the following examples and experimental examples.

[ Example ]

Preparation  1-1: Preparation of Flame Retardant

A flame retardant was prepared by mixing the silane-coated polyammonium phosphate and ammonium polyphosphate (water-soluble APP) in a 1: 2 volume ratio.

Preparation  1-2 to 1-3 and Comparative Preparation  1-1 to 1-2

A flame retardant was prepared in the same manner as in Preparation Example 1, but a flame retardant was prepared by mixing and stirring silane-coated ammonium polyphosphate and ammonium polyphosphate to have a composition ratio as shown in Table 1 below.

division Silane Coated Ammonium Polyphosphate and Ammonium Polyphosphate Volume Ratio Preparation Example 1-1 1: 2.0 Preparation Example 1-2 1: 1.8 Preparation Example 1-3 1: 2.5 Comparative Preparation Example 1-1 1: 1.0 Comparative Preparation Example 1-2 1: 3.5

Preparation  2-1: Depressant  Produce

3 g of boric acid was added to a beaker filled with 50 mL of water, and a boric acid solution was prepared by heating and stirring at 95 ° C. for 30 minutes to form a saturated solution.

Next, 11 g of basic zinc carbonate was added to a boric acid solution, and then 5.5 g of magnesium hydroxide (Mg (OH) ₂ ) was added while stirring was continuously performed at a speed of 1,200 rpm.

Next, the magnesium hydroxide solution was boiled for 1 hour, and then left for 6 hours.

Next, after filtering, the filtrate was dried to obtain white columnar crystals, which were prepared as an inhibitor.

Preparation  2-1 to 2-3 and Comparative Preparation  2-1 to 2-2

In the same manner as in Preparation Example 2-1, but was prepared in the same manner, boric acid, zinc carbonate and magnesium hydroxide was added and stirred so as to have a composition ratio as shown in Table 2 to prepare a white columnar crystals depressants, respectively. .

division Boric acid, zinc carbonate and magnesium hydroxide weight ratio Preparation Example 2-1 1: 3.67: 1.83 Preparation Example 2-2 1: 4.21: 1.45 Preparation Example 2-3 1: 3.20: 1.95 Comparative Preparation Example 2-1 1: 2.13: 1.83 Comparative Preparation Example 2-2 1: 3.67: 0.50 Comparative Preparation Example 2-3 1: 3.67: 3.67

Preparation  3-1: Preparation of Antimicrobial Agents

A mixed nanopowder containing silver (Ag) nanoparticles and titanium dioxide (TiO ₂ ) nanoparticles in a weight ratio of 1: 0.87 was prepared.

Preparation  3-2 to 3-3 and Comparative Preparation  3-1 to 3-2

The antimicrobial agent was prepared in the same manner as in Preparation Example 3-1, but each of the mixed nanopowders (antimicrobial agents) was prepared by mixing silver nanoparticles and titanium dioxide nanoparticles to have a composition ratio as shown in Table 3 below.

division Silver Nanoparticles and Titanium Dioxide Nanoparticles Weight Ratio Preparation Example 3-1 1: 0.87 Preparation Example 3-2 1: 0.75 Preparation Example 3-3 1: 1.00 Comparative Preparation Example 3-1 1: 0.30 Comparative Preparation Example 3-2 1: 1.20

Preparation  4-1: Strength modifier  Produce

Airgel (Talc) having a specific surface area of 600-1,500 m ² / g and a size of 1-50 nm were mixed with a powder of 1: 0.78 in a weight ratio to prepare a powder as a strength enhancer.

Example  1: functional eco-friendly Particle board  Preparation of flame retardant binders for production

Melamine resin was added to water, the flame retardant of Preparation Example 1-1 was added, and ammonium sulfate was added as a flame retardant adjuvant. After the alkyl succinate as the inhibitor of Preparation Example 2-1, the antibacterial agent of Preparation Example 3-1, the strength enhancer of Preparation Example 4-1, paraffin wax as a desiccant, acrylic phosphate coupling agent, copper sulfate as a preservative and a penetrant After the addition at the composition ratio of 3, the mixture was stirred for 20 minutes at a stirring speed of 1,200 rpm to prepare a stirred material.

Next, the stirring was left in the dark at 22 ~ 23 ℃ for 8 hours to mature to prepare a flame-retardant binder.

Comparative example  One

As a binder for producing a functional eco-friendly particle board, a melamine resin (including 0.1 wt% of residual formaldehyde, manufactured by Solar Synthetic Co., Ltd.) was prepared.

Example  2-3 and Comparative example  2 to 3

To prepare a flame-retardant binder in the same manner as in Example 1, but instead of the flame retardant of Preparation Example 1-1 as a flame retardant as shown in Table 4 below Preparation Examples 1-2 to 1-3 and Comparative Preparation Examples 1-1 to 1-2 Flame retardant binders were produced using flame retardants, and Examples 2 to 3 and Comparative Examples 1 to 2 were performed.

Example  4-5 and Comparative example  4 to 7

To prepare a flame retardant binder in the same manner as in Example 1, to prepare a flame retardant binder by varying the amount of flame retardant or flame retardant aid, Examples 4 to 5 and Comparative Examples 4 to 7 were carried out as shown in Table 5.

Classification (wt%) Example 1 Example 2 Example 3 Comparative Example 2 Comparative Example 3 water 10.830 10.830 10.830 10.830 10.830 Flame retardant Preparation Example 1-1 23.364 - - - - Preparation Example 1-2 - 23.364 - - - Preparation Example 1-3 - - 23.364 - - Comparative Preparation Example 1-1 - - - 23.364 - Comparative Preparation Example 1-2 - - - - 23.364 Flame Retardant Supplements Ammonium Sulfate 1.011 1.011 1.011 1.011 1.011 Depressant Preparation Example 2-1 0.722 0.722 0.722 0.722 0.722 Preparation Example 2-2 - - - - - Preparation Example 2-3 - - - - - Comparative Preparation Example 2-1 - - - - - Comparative Preparation Example 2-2 - - - - - Comparative Preparation Example 2-3 - - - - - Antimicrobial Preparation Example 3-1 2.120 2.120 2.120 2.120 2.120 Strength enhancer Preparation Example 4-1 0.722 0.722 0.722 0.722 0.722 Desiccant Paraffin wax 0.800 0.800 0.800 0.800 0.800 Coupling agent Phosphoric Acid Acrylic Coupling Agent 0.870 0.870 0.870 0.870 0.870 antiseptic Copper sulfate 1.011 1.011 1.011 1.011 1.011 Penetrant Alkyl succinate 0.910 0.910 0.910 0.910 0.910 Adhesive resin Melamine resin Remaining balance (100% by weight)

Classification (wt%) Example 4 Example 5 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 water 10.830 10.830 10.830 10.830 10.830 10.830 Flame retardant Preparation Example 1-1 21.580 24.475 18.822 27.050 23.364 23.364 Flame Retardant Supplements Ammonium Sulfate 1.011 1.011 1.011 1.011 0.38 2.510 Depressant Preparation Example 2-1 0.722 0.722 0.722 0.722 0.722 0.722 Antimicrobial Preparation Example 3-1 2.120 2.120 2.120 2.120 2.120 2.120 Strength enhancer Preparation Example 4-1 0.722 0.722 0.722 0.722 0.722 0.722 Desiccant Paraffin wax 0.800 0.800 0.800 0.800 0.800 0.800 Coupling agent Phosphoric Acid Acrylic Coupling Agent 0.870 0.870 0.870 0.870 0.870 0.870 antiseptic Copper sulfate 1.011 1.011 1.011 1.011 1.011 1.011 Penetrant Alkyl succinate 0.910 0.910 0.910 0.910 0.910 0.910 Adhesive resin Melamine resin Remaining balance (100% by weight)

Example  6 to 7 and Comparative example  8 to 10

To prepare a flame retardant binder in the same manner as in Example 1, but instead of the flame retardant of Preparation Example 1-1 as a flame retardant as shown in Table 6 below Preparation Examples 2-2 to 2-3 and Comparative Preparation Examples 2-1 to 2-3 Flame retardant binders were prepared using flame retardants, and Examples 6 to 7 and Comparative Examples 8 to 10 were carried out, respectively.

Classification (wt%) Example 6 Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 water 10.830 10.830 10.830 10.830 10.830 Flame retardant Preparation Example 1-1 23.364 23.364 23.364 23.364 23.364 Flame Retardant Supplements Ammonium Sulfate 1.011 1.011 1.011 1.011 1.011 Depressant Preparation Example 2-1 - - - - - Preparation Example 2-2 0.722 - - - - Preparation Example 2-3 - 0.722 - - - Comparative Preparation Example 2-1 - - 0.722 - - Comparative Preparation Example 2-2 - - - 0.722 - Comparative Preparation Example 2-3 - - - - 0.722 Antimicrobial Preparation Example 3-1 2.120 2.120 2.120 2.120 2.120 Strength enhancer Preparation Example 4-1 0.722 0.722 0.722 0.722 0.722 Desiccant Paraffin wax 0.800 0.800 0.800 0.800 0.800 Coupling agent Phosphoric Acid Acrylic Coupling Agent 0.870 0.870 0.870 0.870 0.870 antiseptic Copper sulfate 1.011 1.011 1.011 1.011 1.011 Penetrant Alkyl succinate 0.910 0.910 0.910 0.910 0.910 Adhesive resin Melamine resin Remaining balance (100% by weight)

Example  8 to 9 and Comparative example  11 to 14

The flame-retardant binder was prepared in the same manner as in Example 1, but the flame-retardant binders were prepared by varying the amount of the strength reinforcing agent and the penetrant, respectively, as shown in Table 7, and Examples 8 to 9 and Comparative Examples 11 to 14 were carried out, respectively.

And, Comparative Example 13 was prepared in the same composition and composition ratio as in Example 1, using only feldspar without using an airgel as a strength enhancer.

Classification (wt%) Example 8 Example 9 Comparative Example 11 Comparative Example 12 Comparative Example 13 Comparative Example 14 water 10.830 10.830 10.830 10.830 10.830 10.830 Flame retardant Preparation Example 1-1 23.364 23.364 23.364 23.364 23.364 23.364 Flame Retardant Supplements Ammonium Sulfate 1.011 1.011 1.011 1.011 1.011 1.011 Depressant Preparation Example 2-1 0.722 0.722 0.722 0.722 0.722 0.722 Antimicrobial Preparation Example 3-1 2.120 2.120 2.120 2.120 2.120 2.120 Strength enhancer Preparation Example 4-1 0.353 1.000 0.127 1.400 0.722 0.722 Desiccant Paraffin wax 0.800 0.800 0.800 0.800 0.800 0.800 Coupling agent Phosphoric Acid Acrylic Coupling Agent 0.870 0.870 0.870 0.870 0.870 0.870 antiseptic Copper sulfate 1.011 1.011 1.011 1.011 1.011 1.011 Penetrant Alkyl succinate 0.910 0.910 0.910 0.910 0.910 0.118 Adhesive resin Melamine resin Remaining balance (100% by weight)

Production Example  1: Manufacture of functional eco-friendly PB (Particle board)

Particle (chip) chip (chip) was put in an automatic mixing coating, and then, about 100 parts by weight of the particle chip, 40 parts by weight of the binder prepared in Example 1 was injected and coated for about 10 minutes to be a mixed penetration coating.

The finished coating was put into a hot plate press having a top plate temperature of 110 ° C. and a bottom plate temperature of 145 ° C., followed by thermocompression bonding at 50 kgf / cm ² for 5 minutes. Next, the thermocompression product was put into a dryer and dried at room temperature (22-25 ° C.) for 3 days to prepare a functional eco-friendly PB.

The manufacturing facilities used to manufacture the PB are shown in FIGS. 1 to 5. Figure 1 shows a pulverizer of the raw material for producing a PB of the present invention, Figure 2 shows a dryer, Figure 3 shows a dry state in the dryer, Figure 4 shows the cutting machine of the PB, Figure 5 shows the PB It is a figure which shows a coater.

Comparative Production Example  One

PB was prepared in the same manner as in Preparation Example 1, but PB was prepared by using the binder of Comparative Example 1 (product of Solar Synthetics) instead of Example 1 as the binder.

Production Example  2 to 9 and Comparative Production Example  2 to 14

Preparation of PB in the same manner as in Preparation Example 1, but by using the flame retardant binder of Examples 2 to 9 or Comparative Preparation Examples 2 to 14 instead of Example 1 as a binder, Preparation Examples 2 to 9 And Comparative Production Examples 2 to 14 were performed (see Table 8).

division bookbinder Preparation Example 1 Example 1 Preparation Example 2 Example 2 Preparation Example 3 Example 3 Preparation Example 4 Example 4 Preparation Example 5 Example 5 Preparation Example 6 Example 6 Preparation Example 7 Example 7 Preparation Example 8 Example 8 Preparation Example 9 Example 9 Comparative Production Example 1 Comparative Example 1 Comparative Production Example 2 Comparative Example 2 Comparative Production Example 3 Comparative Example 3 Comparative Production Example 4 Comparative Example 4 Comparative Production Example 5 Comparative Example 5 Comparative Production Example 6 Comparative Example 6 Comparative Production Example 7 Comparative Example 7 Comparative Production Example 8 Comparative Example 8 Comparative Production Example 9 Comparative Example 9 Comparative Production Example 10 Comparative Example 10 Comparative Production Example 11 Comparative Example 11 Comparative Production Example 12 Comparative Example 12 Comparative Production Example 13 Comparative Example 13 Comparative Production Example 14 Comparative Example 14

Experimental Example  1: antimicrobial measurement

The antimicrobial activity of PB prepared in Preparation Examples and Comparative Preparation Examples was measured by the Korea Institute of Construction and Living Environment Testing, and the antimicrobial activity was measured by KCL-FiR-1003; 2011. The measurement results are shown in FIGS. 2 and 3, respectively.

In Comparative Preparation Example 1, the reduction rate of the bacterium in Escherichia coli, Staphylococcus aureus, and pneumococci were all 99.9% (FIG. 2). It showed the same antimicrobial measurement results (Fig. 3), almost the same as in Comparative Preparation Example 1.

In addition, the results of the measurement of the antimicrobial activity of Preparation Examples 2-3, Preparation Examples 6-7, Comparative Preparation Examples 2-3, and Comparative Preparation Examples 8-10 are shown in Table 9 below.

division Bacterial Reduction (%) Escherichia coli Staphylococcus aureus Pneumococcal Preparation Example 1 99.9 99.9 99.9 Preparation Example 2 99.8 99.9 99.9 Preparation Example 3 99.9 99.8 99.9 Preparation Example 6 99.9 99.8 99.9 Preparation Example 7 99.9 99.9 99.8 Comparative Production Example 1 99.9 99.9 99.9 Comparative Production Example 2 99.9 99.9 99.9 Comparative Production Example 3 99.8 99.9 99.8 Comparative Production Example 8 99.9 99.9 99.8 Comparative Production Example 9 99.9 99.9 99.9 Comparative Production Example 10 99.9 99.9 99.9

It was confirmed that both PBs of Preparation Examples 1 to 5 and Comparative Preparation Examples 1 to 6 had excellent antimicrobial properties (see Table 9 above).

However, it was difficult to work in the production of PB of Comparative Production Example 1, and the pain was felt to the eyes, nose, neck and the like. In general, aqueous solutions of formaldehyde are commercially available as disinfectants, disinfectants, and preservatives. Melamine resin, a binder used in Comparative Preparation Example 1, has a very high concentration of formaldehyde of 0.1% (1,000 ppm), and thus high antibacterial activity. It is judged to have. Residual formaldehyde in melamine resin has been reported to be very toxic to humans, resulting in disease symptoms.If the residual formaldehyde concentration is less than 0.1ppm, irritation occurs in eyes, nose and throat, 0.25 ~ 0.5ppm In this case, it has a fatal effect such as respiratory disorder. In this regard, formaldehyde emission standards and eco-friendly materials standards are regulated by law as follows, and the standards are shown in Table 10 below.

(super) seo Highest grade of material below 0.3mg / l with the lowest formaldehyde emission. E0 0.5mg / l or less, medium and high grade materials E1 1.5mg / l or less, indoor furniture basic grade E2 5mg / l or less, not available for indoor furniture

Experimental Example  2: mold resistance and resistance test

The mold resistance and resistance of PB prepared in the above production examples and the comparative manufacturing examples were measured by the Korea Institute of Construction and Environmental Testing and Research, and the mold resistance was applied in accordance with ASTM G21-15 and the mold resistance in accordance with ASTM D6329-98 (2015). Test results, the mold resistance measurement results of Comparative Preparation Example 1 and Preparation Example 1 are shown in Figs. 4 and 5, respectively, and the mold resistance measurement results are shown in Figs.

The mold resistance of Comparative Preparation Example 1 was excellent in grade 0 (FIG. 4), and the mold resistance was well below 1.0 (FIG. 6). In addition, PB of Preparation Example 1 also showed excellent results with mold resistance 0 grade (FIG. 5) and mold resistance 1.0 or less (FIG. 7). At this time, the reference value of the mold resistance grade is 0 to 4 grade.

Comparative Example 1 showed excellent mold resistance and resistance even without a separate antimicrobial agent, due to the high concentration of formaldehyde remaining in the binder used in the preparation of PB of Comparative Preparation Example 1, as in the antimicrobial activity of Experimental Example 1 It seems to be.

In addition, the results of the measurement of the antimicrobial activity of Preparation Examples 2-3, Preparation Examples 6-7, Comparative Preparation Examples 2-3, and Comparative Preparation Examples 8-10 are shown in Table 11 below.

division Mildew Resistance
(4 weeks later) Mildew Resistance
(log value) Mold spores
(CFU / plate) Preparation Example 1 0 ratings 1.0 <10 Preparation Example 2 0 ratings 1.0 <10 Preparation Example 3 0 ratings 1.0 <10 Preparation Example 6 0 ratings 1.0 <10 Preparation Example 7 0 ratings 1.0 <10 Comparative Production Example 1 0 ratings 1.0 <10 Comparative Production Example 2 0 ratings 1.0 <10 Comparative Production Example 3 0 ratings 1.0 <10 Comparative Production Example 8 0 ratings 1.0 <10 Comparative Production Example 9 0 ratings 1.0 <10 Comparative Production Example 10 0 ratings 1.0 <10

Experimental Example  3: flame retardant (flame retardant) measurement

The flame retardancy of PB manufactured in Preparation Example and Comparative Preparation Example was measured according to the test standard of the National Security Agency Notice No. 2016-138. Indicated.

And, the measurement results for Preparation Examples 1 to 7 and Comparative Preparation Examples 1 to 10 are shown in Table 9 below. In Table 12, carbonization length, surface area, residual flame time, and residual time represent average values measured three times for each sample.

division Carbonization length
(cm) Ammunition
(cm ² ) Afterglow time
(second) Remaining time
(second) Preparation Example 1 6.0 22.3 0 0 Preparation Example 2 6.9 24.4 One 3 Preparation Example 3 5.7 21.1 0 0 Preparation Example 4 7.1 26.9 2 4 Preparation Example 5 5.5 20.2 0 0 Preparation Example 6 6.2 22.7 One 0 Preparation Example 7 6.3 22.6 0 0 Comparative Production Example 1 19.7 55.8 13 22 Comparative Production Example 2 12.8 38.2 3 8 Comparative Production Example 3 5.6 20.9 0 0 Comparative Production Example 4 15.3 42.3 10 17 Comparative Production Example 5 5.5 20.4 0 0 Comparative Production Example 6 9.6 32.1 3 6 Comparative Production Example 7 5.9 22.5 0 0 Comparative Production Example 8 6.3 22.9 0 0 Comparative Production Example 9 6.7 23.5 0 One Comparative Production Example 10 7.1 24.0 One One [Flame Retardance Acceptance Level]
* Carbide length: Within 20 cm / * Carbon footprint: 50 cm ² Within
* Afterflame time: within 10 seconds / * Residual time: within 30 seconds

Looking at the measurement results of Table 12, when comparing the Preparation Examples 1 to 3, the flame retardancy tended to decrease slightly when the volume ratio of ammonium polyphosphate in the flame retardant component was decreased, and the flame retardancy was slightly increased when the volume ratio of ammonium polyphosphate was increased. Showed a tendency to.

On the contrary, Comparative Production Example 1, which is a PB using an existing binder, had a problem that the carbonization length and the residual flame time did not satisfy the reference value.

In Comparative Preparation Example 2 prepared with a binder using ammonium polyphosphate in an amount of less than 1.5 volume ratio with respect to 1 volume ratio of silane-coated polyammonium phosphate as a flame retardant, compared with Preparation Example 2, the flame retardancy tended to be greatly inferior, and polyphosphoric acid In Comparative Preparation Example 3 in which ammonium was prepared with a binder exceeding 3.0 volume ratio, there was little effect of increasing flame retardancy compared with Preparation Example 3.

In addition, in Comparative Preparation Example 4 prepared with a binder using a flame retardant less than 20% by weight, compared with Preparation Example 1 and Preparation Example 4, there is a problem that the flame retardancy is sharply reduced, using more than 25% by weight of the flame retardant In Comparative Example 5 prepared with a binder, compared with Preparation Example 1 and Preparation Example 5, there was no effect of increasing the flame retardancy.

In addition, Comparative Preparation Example 6 prepared with a binder using a flame retardant adjuvant less than 0.5% by weight, compared to Preparation Example 1, showed a problem that the flame retardancy is reduced, and prepared with a binder using a flame retardant adjuvant more than 2.0% by weight In Comparative Example 7, compared with Preparation Example 1, there was no effect of increasing the flame retardancy.

And, in Comparative Examples 8 to 10, compared with Preparation Examples 6 to 7, there was no significant difference in flame retardancy.

Experimental Example  4: Non-Flaming and Smoke Density Flaming measurement  through Absurdity  Effect measurement

In order to confirm the inhibitory effect on the PB of the production example and the comparative production example, experiments to measure the radiant heat and direct heat according to the smoke density of the PB.

Radiation heat and direct heat test method was applied mutatis mutandis to the 2017 Fire Department notice No. 2017-1, commissioned by the Korea Institute of Construction and Living Environment test for Production Example 1 and the results are shown in Figure 9 and 10. 9A to 9D show measurement results for non-flame, and FIGS. 10A to 10D show results for flame heat.

In addition, the measurement results of Preparation Examples 2-3, Preparation Examples 6-7, Comparative Production Examples 2-3, and Comparative Production Examples 8-10 are shown in Table 13 below.

division For radiant heat
Maximum smoke density For direct heat
Maximum smoke density Preparation Example 1 262 286 Preparation Example 2 268 292 Preparation Example 3 256 275 Preparation Example 6 275 302 Preparation Example 7 257 278 Comparative Production Example 2 295 339 Comparative Production Example 3 263 310 Comparative Production Example 8 337 376 Comparative Production Example 9 359 414 Comparative Production Example 10 277 304 [Maximum Smoke Density Acceptance Level]
* Maximum smoke density of less than 400 for radiant heat
* Maximum smoke density less than 400 for direct heat

Looking at the measurement results of Table 13, in the case of the manufacturing example, the smoke density for the radiant heat and direct heat was very low than the reference value. In addition, Comparative Preparation Examples 2 to 3 also did not have a large difference in smoke density when compared with Preparation Example 1 and the like.

On the contrary, the PB of Comparative Preparation Example 8 prepared with a binder using an inhibitor using zinc carbonate in an amount less than 2.5 weight ratio of boric acid satisfies the acceptance criteria, but the radiant heat and direct heat The smoke density increased rapidly.

In addition, the PB of Comparative Preparation Example 9 prepared with a binder using magnesium hydroxide in an amount less than 0.5 weight ratio of boric acid has a problem in that the smoke density for radiant heat is very high and the smoke density for direct heat exceeds the standard value.

In addition, the PB of Comparative Preparation Example 10 prepared with a binder using an inhibitor using an excess of magnesium hydroxide relative to boric acid in a weight ratio of 2.5 showed no increase in the inhibitory effect when compared with Preparation Examples 1 and 7.

Experimental Example  5: Total Volatile Organic Compounds ( TVOC ), Toluene, Formaldehyde Removal Rate Measurement

The removal rate of TVOC, toluene and formaldehyde for PB of Preparation Example and Comparative Preparation Example were measured in accordance with the Indoor Air Quality Process Test Standard (Ministry of Environment Notice 2017-11), and the results are shown in Table 14 below. In addition, the removal rate of Table 14 measures the PB of the comparative manufacture example 1 based on the following equation 1 based on TVOC, toluene, and formaldehyde measurement value.

Equation 1

% Removal = {(Measurement value of Comparative Preparation Example 1-Measurement value of sample) / (Measurement value of Comparative Preparation Example 1)} × 100 (%)

And, the test certificate of Comparative Preparation Example 1 is shown in Figures 11a and 11b, the test report of Preparation Example 1 is shown in Figure 12.

For reference, reference values of the office desk chair, the student desk chair, and the office partition of the Environmental Industry and Technology Institute are shown in Table 15 below.

division TVOC toluene Formaldehyde Measures
(mg / (m ² , h)) Removal rate
(%) Measures
(mg / (m ² , h)) Removal rate
(%) Measured value (mg / (m ² , h)) Removal rate
(%) Comparative Production Example 1 0.350 - 0.001 - 0.885 - Preparation Example 1 0.089 75.0 Not detected 100 0.038 96.0 Preparation Example 2 0.094 73.2 Not detected 100 0.522 94.1 Preparation Example 3 0.079 77.5 Not detected 100 0.021 97.6 Preparation Example 6 0.095 72.8 0.0001 0.056 93.7 Preparation Example 7 0.077 78.1 Not detected 100 0.028 96.8 Comparative Production Example 2 0.087 75.2 Not detected 100 0.027 96.9 Comparative Production Example 3 0.088 74.9 0.0001 90 0.065 92.6 Comparative Production Example 4 0.136 61.2 0.0001 90 0.111 87.5 Comparative Production Example 5 0.072 79.5 Not detected 100 0.027 96.9 Comparative Production Example 8 0.090 74.3 Not detected 100 0.034 96.2 Comparative Production Example 9 0.085 75.8 Not detected 100 0.040 95.5 Comparative Production Example 10 0.090 74.3 Not detected 100 0.094 89.4 Comparative Production Example 13 0.145 58.5 0.0005 50 0.254 71.3 Comparative Production Example 14 0.126 63.9 0.0002 80 0.181 79.6

Total Volatile Organic Compounds (TVOC) 0.4 mg / (m ² , h) toluene 0.080 mg / (m ² , h) Formaldehyde 0.12 mg / (m ² , h)

Looking at the Table 14, it can be seen that both the preparation example and the comparative preparation example showed a very good TVOC, toluene, formaldehyde removal effect compared to Comparative Preparation Example 1.

Compared with Preparation Example 1, Comparative Preparation Example 2 using a binder having a low ammonium polyphosphate ratio in the flame retardant of the binder showed a higher formaldehyde removal rate than Preparation Example 1, which was compared with Preparation Example 1, It is believed that the coating polyammonium phosphate increases the bonding strength between the compositions in the PB, resulting in a decrease in the amount of formaldehyde released from the PB. In addition, when compared with Preparation Example 1, Comparative Preparation Example 3 prepared with a binder having a relatively high proportion of ammonium polyphosphate in the flame retardant of the binder, formaldehyde removal rate was slightly reduced than Preparation Example 1. However, Comparative Examples 2 to 3 showed excellent overall TVOC, toluene and formaldehyde removal rates.

In Comparative Preparation Example 4 prepared with a binder using a flame retardant of less than 20% by weight, the TVOC removal rate and formaldehyde removal rate tended to decrease sharply compared to Preparation Example 1.

In Comparative Examples 8 to 9, the removal rate was similar to that of Preparation Example 1. However, in Comparative Example 10, in which the weight ratio of magnesium hydroxide in the inhibitor was rather high, formaldehyde removal rate was sharply decreased. The results were shown. However, when compared with Comparative Preparation Example 1, it showed an excellent formaldehyde removal rate.

On the contrary, in the case of Comparative Preparation Example 13 using a binder composed only of feldspar as a strength enhancer and Comparative Preparation Example 14 prepared from a binder using less than 0.2% by weight of the penetrant, TVOC removal rate and formaldehyde removal rate were compared with Preparation Example 1 and the like. This showed a greatly diminishing problem.

Experimental Example  6: Plane tensile strength measurement

Plane tensile strength of PB of Preparation Examples 1, 8 to 9 and Comparative Examples 11 to 14 was measured according to KSF 3104: 2016, and the results were obtained by requesting the Korea Institute of Construction and Environmental Testing for Preparation Example 1. It is shown in 13. In addition, the measurement results of planar tensile strength of PB prepared in Preparation Example 1, Preparation Example 5, Preparation Examples 8 to 9, Comparative Preparation Example 5 and Comparative Preparation Examples 11 to 14 are shown in Table 16 below. The relative tensile strength reduction rate is calculated based on Equation 2 below.

[Equation 2]

Relative Tensile Strength Reduction (%) = {(Planar Tensile Strength of Preparation Example 1-Planar Tensile Strength of Sample) / (Planar Tensile Strength of Preparation Example 1)} × 100 (%)

In equation 2, the planar tensile strength of Preparation Example 1 was 1.1 MPa.

Here, the planar tensile strength test is a measure of the characteristics when the particle board is stressed, and applies a tensile force distributed evenly on the surface of the specimen to resist the force perpendicular to the outermost surface of the specimen until failure occurs. Mean vertical tensile test to measure. In addition, the legal standard value of PB is 0.4MPa or more, and Preparation Example 1 having a plane tensile strength of 1.1 MPa showed about 2.75 times higher than the legal standard value.

division Relative Plane Tensile Strength Reduction Rate Preparation Example 1 100.00% Preparation Example 5 99.82% Preparation Example 8 98.57% Preparation Example 9 101.12% Comparative Production Example 5 97.80% Comparative Production Example 11 93.20% Comparative Production Example 12 101.40% Comparative Production Example 13 102.20% Comparative Production Example 14 95.72%

Looking at the measurement results of Table 16, in Comparative Preparation Example 5 prepared with a binder used in excess of 25% by weight of flame retardant, there was no difference in flame retardant effect compared to Preparation Example 1 and Preparation Example 5 (using a flame retardant 24.475% by weight). However (see Table 12), the planar tensile strength decreased by about 2.0%.

In Comparative Preparation Example 11, in which the strength enhancer was made of a binder less than 0.30 wt%, the planar tensile strength dropped sharply, and when compared to Preparation Example 1 and 8, the binder was more than 1.20 wt%. In the case of Comparative Preparation Example 12 prepared, compared with Preparation Example 1 and Preparation Example 9, the planar tensile strength increase effect was inadequate.

In Comparative Production Example 13 using a binder composed only of feldspar as a strength enhancer, although slightly increased than Preparation Example 1, considering the reduction effect of TVOC and the like (see Table 15), aerogel was mixed with feldspar as a strength enhancer. It was confirmed that the advantage in terms of overall physical properties.

In addition, in the case of Comparative Preparation Example 14 prepared with a binder using less than 0.2% by weight of the penetrant, compared with Preparation Example 1, it was confirmed that there is a problem that the plane tensile strength is reduced by 4% or more.

Through the above examples and experimental examples, the flame retardant binder composition of the present invention and the flame retardant binder prepared therein have excellent antimicrobial, antifungal, bactericidal, deodorant, tensile strength, bursting strength and bending strength, and give off aldehydes such as formaldehyde. In addition to preventing and / or minimizing, it was found to be suitable for manufacturing particle boards having excellent flame retardancy.

The above description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention can be easily changed to other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments and the experimental examples described above are illustrative in all respects and are not limiting.

Claims (9)

delete delete delete 20 to 25% by weight of a flame retardant including silane-coated ammonium polyphosphate and ammonium polyphosphate in a volume ratio of 1.5 to 3.0; Flame retardant adjuvant 0.5-2.0 wt%; 0.3 to 1.2% by weight strength modifier; 0.2 to 1.0% by weight penetrant; 10-15 weight percent water; And a residual amount of melamine resin;
The flame retardant auxiliary agent includes one or more selected from ammonium sulfate, ammonium polyphosphate and polyphosphazene,
The strength reinforcing agent includes a mixed powder in which the airgel and feldspar are mixed in a weight ratio of 1: 0.40 to 1.00,
The airgel is a highly porous nanostructure with a specific surface area of 600-1,500 m ² / g and a size of 1 to 50 nm,
The penetrant is flame retardant binder composition for producing a functional eco-friendly particle board, characterized in that it comprises an alkyl succinate.

The flame retardant binder for manufacturing functional eco-friendly particle board according to claim 4, further comprising at least one selected from a depressant, a desiccant, an antibacterial agent, a coupling agent, a preservative and a penetrant. Composition.
According to claim 4, Flame retardant 20 to 25% by weight, flame retardant auxiliary agent 0.5 to 2.0% by weight, depressant 0.1 to 5.0% by weight, strength enhancer 0.3 to 1.2% by weight, desiccant 0.5 to 2.0% by weight, antibacterial 1.0 to 3.0% by weight , Flame retardant binder composition for producing functional eco-friendly particle board, comprising 0.3 to 1.2% by weight of coupling agent, 0.05 to 1.2% by weight of preservative, 0.2 to 1.0% by weight of penetrant, 10 to 15% by weight of water and residual amount of melamine resin.
Step 1 to prepare a composition of any one of claims 4 to 6;
Mixing the composition, followed by stirring for 10 to 30 minutes at a stirring speed of 800 to 1,500 rpm to prepare a stirred product; And
Method of producing a flame-retardant binder for manufacturing a functional eco-friendly particle board, characterized in that for performing a process comprising; three steps of aging the stirring in a dark room of 20 ~ 35 ℃ for 6 to 12 hours.
A flame-retardant binder for producing a functional eco-friendly particle board, characterized in that it comprises a mixture of a mixture of the composition of any one of claims 4 to 6.
Particle board (particle board) characterized in that it comprises a thermocompression coating of the coating in which the particle chip (particle chip) by the flame-retardant binder of claim 8.

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