KR102290676B1 - Aqueous binder composition and fibrous materials using the same - Google Patents

Abstract

The present invention provides a composition comprising a reducing sugar, an amino acid, a first reinforcing agent, and a second reinforcing agent, wherein the first reinforcing agent is a resin having a weight average molecular weight of 5,000 to 200,000 g/mol including a hydroxyl group, the second reinforcing agent is a polyamide-based resin, and a total amount of the first reinforcing agent and the second reinforcing agent is 3 to 50 wt% based on the solid content of the composition.

Description

Aqueous binder composition and fibrous material applied thereto {AQUEOUS BINDER COMPOSITION AND FIBROUS MATERIALS USING THE SAME}

The present invention relates to an aqueous binder composition that does not use toxic substances such as formaldehyde, which is less harmful to the human body and is environmentally friendly, and the cured product prepared therefrom has excellent mechanical properties and incombustibility.

Phenol-formaldehyde resin is widely used as a binder for adhesives of fibrous materials such as glass wool and rock wool because of its low price and excellent physical properties. However, phenol-formaldehyde resin has a problem of releasing formaldehyde, a toxic substance, to the surrounding environment during processing, storage and curing. Formaldehyde has a foul odor and is known to cause various diseases when exposed to the human body. In addition, in the phenol-formaldehyde resin, unreacted phenol remains and may leak into the surrounding environment, and such phenol is also known as a toxic substance.

As an alternative to this, US Patent No. 7,854,980 (Patent Document 1) discloses a mineral fiber insulating material including mineral fibers and an organic binder, wherein the organic binder is formaldehyde-free. However, compared to a cured product prepared from a binder including a phenol-formaldehyde resin, the cured product of Patent Document 1 has low mechanical properties, so there is a limit in applicable fields.

In addition, in US Patent No. 5,538,761 (Patent Document 2), an acidifying hydrolyzable salt, an inorganic acid, a monomeric carboxylic acid, an ester of a di- or poly-carboxylic acid, and a mixture thereof using an acidifying agent selected from the group consisting of A method for producing a phenol-formaldehyde binder-treated fiberglass comprising the step of adjusting to less than 5.5 is disclosed. However, as in Patent Document 2, there is a limit to the control of the release amount of formaldehyde using an acidifying agent, and the acidified binder including the acidifying agent as described above lacks stability, and thus has poor storage properties and may cause equipment corrosion.

Therefore, there is a need for research and development on an aqueous binder composition that does not use toxic substances such as formaldehyde, is environmentally friendly, and has excellent mechanical properties and nonflammability of the cured product.

US Patent No. 7,854,980 (published on: 2010. 4. 1.) U.S. Patent No. 5,538,761 (published date: July 23, 1996)

Accordingly, the present invention does not use toxic substances such as formaldehyde, so it is less harmful to the human body and is environmentally friendly, and it is an object of the present invention to provide a formaldehyde-free aqueous binder composition having excellent mechanical properties and incombustibility of the prepared cured product.

The present invention provides a composition comprising a reducing sugar, an amino acid, a first adjuvant and a second adjuvant,

The first reinforcing agent is a resin having a weight average molecular weight of 5,000 to 200,000 g/mol including a hydroxyl group,

The second reinforcing agent is a polyamide-based resin,

It provides an aqueous binder composition, wherein the total amount of the first reinforcing agent and the second reinforcing agent is 3 to 50 wt% based on the solid content of the composition.

In addition, the present invention provides a fibrous material bound using the aqueous binder composition.

The aqueous binder composition according to the present invention does not use formaldehyde, so it is eco-friendly and has low harmfulness to the human body. In addition, the fibrous material bound using the same has excellent mechanical properties such as water resistance, cutting workability, compressive strength and weather resistance, and thus has mechanical properties similar to or superior to those of the fibrous material bound with a conventional phenol-formaldehyde resin. In addition, the fibrous material is excellent in incombustibility, water permeability and moldability, and has a low dust rate, so it can be applied to various fields.

Hereinafter, the present invention will be described in detail.

In the present invention, the "weight average molecular weight" of the resin can be measured by a method well known in the art, for example, it can represent a value measured by the method of GPC (gel permeation chromatograph).

aqueous binder composition

The aqueous binder composition according to the present invention includes a reducing sugar, an amino acid, a first adjuvant and a second adjuvant.

In the present invention, curing is performed through a Maillard reaction between a reducing sugar and an amino acid, and in this process, the hydroxyl group of the first adjuvant and the amine group of the second adjuvant may participate in the reaction. In addition, superior strength and weather resistance compared to a conventional composition composed of only reducing sugars and/or amino acids can be realized through a reaction between the first adjuvant and the second adjuvant, or a self-reaction of each of the first adjuvant and the second adjuvant. can

reducing sugar

The reducing sugar is a main raw material of the binder composition, and serves to impart adhesiveness and mechanical properties to the composition.

The reducing sugar includes aldose or ketose saccharides having an aldehyde or having an aldehyde structure by isomerization, for example, monosaccharides, disaccharides, or mixtures thereof. Specifically, the reducing sugar may include, but is not limited to, glucose, maltose, fructose, galactose, lactose, cellobiose, gentiobiose, rutinose, glyceraldehyde, and the like, or hydrates thereof.

In addition, the reducing sugar may be included in an amount of 0.5 to 20 parts by weight, 5 to 15 parts by weight, or 6 to 10 parts by weight based on 0.5 to 10 parts by weight of the amino acid. If the content of the reducing sugar is less than or generated within the above range, and exceeds the above range, there may be a problem in that the strength of the fibrous material bound after curing is inferior.

amino acid

Amino acids are the main resins of the binder composition, and serve to impart adhesiveness and mechanical properties to the composition.

The amino acid may be a compound including at least one amino group and at least one carboxyl group in one molecule. For example, the amino acids are glycine, alanine, valine, leucine, isoleucine, threonine, serine, cysteine, methionine, aspartic acid, asparagine, glutamic acid, diiodotyrosine, lysine, arginine, histidine, phenylalanine, tyrosine, tryptophan, proline, and amino acids such as oxyproline and glutamine, or sulfates thereof, but is not limited thereto.

In addition, the amino acid may be included in an amount of 0.5 to 10 parts by weight, 1 to 5 parts by weight, or 1 to 3 parts by weight based on 0.5 to 20 parts by weight of the reducing sugar. If the content of the amino acid is less than the above range, or exceeds the above range, there may be a problem in that the strength of the fibrous material bound after curing is inferior.

first adjuvant

The first reinforcing agent serves to improve the strength of the prepared cured product.

The first reinforcing agent is a polymer resin including a hydroxyl group, and when the hydroxyl group-containing polymer resin is used as the first reinforcing agent, the strength of the fibrous material bound after curing is improved.

Specifically, when a polymer resin including a hydroxyl group is included in the binder composition as a strength reinforcing agent, product strength can be greatly improved at the same binder content. More specifically, when a polymer resin including a hydroxyl group is used as the strength reinforcing agent, product strength is greatly improved while having good water resistance. This can improve non-combustible performance and reduce formaldehyde emission by reducing the content of the organic binder in manufacturing a product having the same strength.

On the other hand, when a hydroxyl group-containing monomolecule is used as a strength reinforcing agent, not only the product strength effect is insignificant, but also a problem of lowering water resistance may occur.

For example, the first adjuvant may include a repeating unit represented by the following Chemical Formula 1, and the first adjuvant may be obtained from a radical or condensation reaction, or a natural extract.

In Formula 1,

R ¹ is a substituted or unsubstituted aliphatic hydrocarbon group having 2 to 20 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 20 carbon atoms,

n is an integer from 100 to 5,000.

Specifically, R ¹ may be a substituted or unsubstituted aliphatic hydrocarbon group having 2 or 12 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 or 12 carbon atoms. In this case, the ^{aliphatic hydrocarbon group of R 1} is a branched, straight or cyclic trivalent hydrocarbon group, and the heterocyclic group is a cyclic group including one or more heteroatoms among N, O and S. For example, the heterocyclic group may include, but is not limited to, a glucose-modified derivative.

In this case, "substitution" means that the hydrogen atom bonded to the carbon atom of the compound is changed to another organic group, and the position to be substituted is not limited as long as the position at which the hydrogen atom is substituted, that is, the position where the organic group can be substituted, the number of substituents is not limited. does not That is, the repeating unit represented by Chemical Formula 1 includes at least one hydroxyl group per one repeating unit, and may additionally include other organic groups as a substituent in addition to the hydroxyl group.

Specifically, n may be an integer of 300 to 3,000, or an integer of 400 to 2,000.

For example, the first adjuvant may be hydroxyethyl cellulose or polyvinyl alcohol.

The first reinforcing agent may be a resin having a weight average molecular weight (Mw) of 5,000 to 200,000 g/mol, or 15,000 to 100,000 g/mol. When the weight average molecular weight of the first reinforcing agent is within the above range, the strength of the bound fibrous material may be improved. On the other hand, when the weight average molecular weight of the first reinforcing agent is less than the above range, the effect of improving the strength of the prepared cured product may be insignificant. It may be difficult to apply as a binder of

The first reinforcing agent and the following second reinforcing agent may be included in a weight ratio of 1:0.1 to 1:5.0, or 1:0.5 to 1:1.5, based on the solid content. If it is less than the above range, the strength reinforcement effect may be deteriorated and water resistance may be inferior.

The total amount of the first reinforcing agent and the following second reinforcing agent may be included in an amount of 3 to 50% by weight, 4 to 45% by weight, or 6 to 30% by weight based on the solid content of the composition. Strength reinforcement when the total amount of the first reinforcing agent and the second reinforcing agent is less than the above range due to a reaction between the hydroxyl group of the first reinforcing agent and the second reinforcing agent, or a reaction between the first and second reinforcing agents and a reducing sugar/amino acid and their own reaction A problem in which the effect is lowered occurs, and when it exceeds the above range, a problem in which the viscosity of the composition increases or the water resistance is inferior may occur. In this case, the total amount of the first reinforcing agent and the second reinforcing agent may be based on the solid content.

In addition, the first reinforcing agent may be included in an amount of 0.15 to 3 parts by weight, 0.25 to 2.0 parts by weight, or 0.3 to 1.5 parts by weight based on the solid content based on 0.5 to 20 parts by weight of the reducing sugar. When the content of the first reinforcing agent is less than the above range, there may be a problem in that the strength reinforcing effect is reduced.

second adjuvant

The second reinforcing agent serves to improve the strength of the prepared cured product.

The second reinforcing agent is a polyamide-based resin, and when the polyamide-based resin is used as the second reinforcing agent, there is an effect of improving strength while securing water resistance of the bound fibrous material. This is a result of improving the water resistance of the bound fibrous material through the reaction of the second reinforcing agent with the hydroxyl group of the first reinforcing agent or reducing sugar in the binder, or the self-reaction of the second reinforcing agent.

The second adjuvant may be directly synthesized according to a known method, or a commercially available product may be used. For example, the second reinforcing agent may be prepared from an amine group-containing first monomer, a carboxy group-containing second monomer, and an epoxy group-containing third monomer.

In this case, the amine group-containing first monomer may be, for example, a monomer including two or more amine groups or three or more amine groups per molecule. Specifically, the amine group-containing first monomer is N-(2-aminoethyl)-1,2-ethanediamine (N-(2-aminoethyl)-1,2-ethanediamine), diethylenetriamine, diaminobutane , diaminohexane, diaminododecane, diaminohexane, cyclic amine, and the like. In this case, the cyclic amine may include, for example, 1,4-diaminocyclohexane, 4,4'-diaminobicyclohexylamine, 1,3-xylenediamine, and 1,4-xylenediamine. .

In addition, the carboxyl group-containing second monomer may be, for example, a monomer including one or more carboxyl groups or two or more carboxyl groups per molecule. Specifically, the carboxyl group-containing second monomer may include adipic acid, dodecane dicarboxylic acid, isophthalic acid, terephthalic acid, and the like, and may include esters and anhydrides of carboxylic acid as described above.

The epoxy group-containing third monomer may be, for example, a monomer including at least one epoxy group or at least one glycidyl group per molecule. Specifically, the epoxy group-containing third monomer may be epichlorohydrin.

For example, the second reinforcing agent is an epoxidized polyamide obtained by neutralizing polyamido-amine obtained by polymerizing diethylenetriamine and adipic acid with epichlorohydrin, that is, polyamidoamine-epi. It may be chlorohydrin (PAE, polyamidoamine-epichlorohydrin). In addition, the second adjuvant may be a solubilized polyamido-amine (polyamido-amine).

The second reinforcing agent may be included in an amount of 0.15 to 3 parts by weight, 0.2 to 2.0 parts by weight, or 0.25 to 1.5 parts by weight based on the solid content based on 0.5 to 20 parts by weight of reducing sugar.

When the content of the second reinforcing agent is less than the above range, the strength reinforcing effect is reduced.

additive

The aqueous binder composition may further include one or more additives selected from the group consisting of a condensation catalyst, a pH adjuster, a coupling agent, a dustproof agent, a water repellent, and a solvent.

The condensation catalyst serves to promote the condensation reaction in the binder composition. The condensation catalyst may be used without any particular limitation as long as it can be used in a conventional binder composition, for example, aluminum ammonium sulfate, ammonium sulfonate, ammonium para-toluene sulfonate, ammonium citrate, and the like. have.

The pH adjusting agent serves to adjust and neutralize the pH of the binder. The pH adjusting agent may be used without particular limitation as long as it can be used in a conventional binder composition, for example, ammonia, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, silane, amino alcohol, polyamine, and the like.

The coupling agent serves to increase the interfacial adhesion between the fibrous material and the binder composition. The coupling agent may be used without any particular limitation as long as it can be used in a conventional binder composition, and may be, for example, an organosilicon compound. The organosilicon compound may be, for example, an amino silane compound.

The dustproofing agent serves to reduce the dust generation rate of the product. In this case, the anti-vibration agent may be used without any particular limitation as long as it can be used in the binder composition, for example, anti-vibration oil and the like.

The water repellent serves to increase the water resistance of the fibrous material. The water repellent may be used without any particular limitation as long as it can be used in a conventional binder composition, for example, a silicone emulsion and the like.

The solvent serves to control the viscosity and dryness of the composition. In this case, the solvent may be water, and for example, deionized water, pure water, ultrapure water, distilled water, and recycled process water after use.

The aqueous binder composition according to the present invention as described above is environmentally friendly and has low harmfulness to the human body because the ^{amount of formaldehyde emitted is less than 0.008 mg/m 3 ·hr.}

fibrous material

In addition, the fibrous material according to the present invention is bound using the aqueous binder composition as described above. That is, the fibrous material may include an aqueous binder composition and a raw fibrous material.

In this case, the raw fibrous material (ie, the fibrous material to be bound) may include, but is not limited to, inorganic fibers (eg, rock wool, glass wool, ceramic fibers, etc.) or organic fibers such as natural and synthetic resins. In addition, the raw fibrous material may be a short fiber or a medium fiber.

In addition, the fibrous material may be bound by thermally curing the binder composition after spraying or applying an aqueous binder composition to the raw fibrous material. In this case, the thermal curing may be performed at 120 °C or higher, 120 to 300 °C, or 150 to 250 °C. If the heat treatment temperature is too low, non-curing may occur, resulting in a long curing time, which may cause a problem in that productivity is lowered. In addition, if the heat treatment temperature is too high, the binder may be decomposed during the curing process, resulting in very poor tensile properties, which may cause carbonization and generation of dust.

The bound fibrous material may include 1 to 15 parts by weight, or 2 to 12 parts by weight of the solid content of the aqueous binder composition based on 100 parts by weight of the bound fibrous material. In this case, when the solid content of the binder composition in the bound fibrous material is out of the above content, the strength and non-combustibility of the manufactured product may be reduced. In this case, the solid content of the aqueous binder composition in the bound fibrous material may be adjusted through the adjustment of the solid content of the binder composition, and the spray amount or the application amount.

The fibrous material may have a release amount of volatile organic compounds measured by the small chamber method described in KS M ISO 16000-9 of 0.008 mg/m ³ ·hr or less.

As described above, the fibrous material according to the present invention has excellent water resistance, cutting workability, water immersion, compressive strength, weather resistance, moldability and non-combustible performance, has a low dust rate, and has a low emission of volatile organic compounds such as formaldehyde. It is eco-friendly and has low toxicity.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are only for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

[Example]

Example 1. Preparation of aqueous binder composition

In a reaction vessel, 7.07 parts by weight of glucose hydrate as a reducing sugar (solid content: 91% by weight), 2.18 parts by weight of lysine sulfate as an amino acid (solid content: 100% by weight), and 0.03 parts by weight of aluminum ammonium sulfate as a condensation catalyst ( Solid content: 52.4 wt%), polyvinyl alcohol (Mw: 22,000±2,000 g/mol) as the first adjuvant-1, 3.12 parts by weight (solid content: 15 wt%), polyamidoamine-epichlorohye as the second adjuvant Drin (KATAX-8772, Pulcra Chem) 3.12 parts by weight (solids content: 12.5% by weight), coupling agent (3-aminopropyl)triethoxysilane 0.04 parts by weight (solids content: 99% by weight), anti-vibration oil ( Time Chemical's TC-97A, solid content: 50 wt%) 0.53 parts by weight, water repellent agent silicone emulsion (SI1479Z, KCC's SI1479Z, solid content: 40 wt%) 0.31 parts by weight and 83.23 parts by weight of water were added, and stirred for 30 minutes. Thereafter, the pH was adjusted to 7-8 using 0.35 parts by weight of ammonia water (solid content: 9.0% by weight), and further stirred for 10 minutes to prepare an aqueous binder composition. The solid content of the prepared aqueous binder composition was approximately 10% by weight (9.5 to 10.5% by weight).

Examples 2 to 8 and Comparative Examples 1 to 5.

An aqueous binder composition was prepared in the same manner as in Example 1, except that the content of each component described in Tables 1 and 2 was used.

Ingredients (parts by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 reducing sugar 7.07 7.11 5.96 7.12 7.07 6.01 amino acid 2.18 2.20 1.84 2.20 2.18 1.86 Aluminum Ammonium Sulfate 0.03 0.03 0.03 0.03 0.03 0.03 First Adjuvant-1 (PVA) 3.12 1.57 13.14 0.00 4.68 2.65 No. 1 Adjuvant-2 (Cellu) 0.00 0.00 0.00 0.47 0.00 0.00 Second adjuvant (PAE) 3.12 5.23 2.63 3.14 1.56 15.03 coupling agent 0.04 0.04 0.04 0.04 0.04 0.04 water repellent 0.31 0.31 0.26 0.31 0.31 0.27 anti-vibration oil 0.53 0.53 0.45 0.53 0.53 0.45 ammonia 0.35 0.36 0.30 0.36 0.35 0.30 water 83.23 82.62 75.36 85.80 83.23 73.37 total amount 100 100 100 100 100 100 Solids content of the composition (wt%) 9.96 10.04 9.97 10.02 10.0 10.01

Ingredients (parts by weight) Example 7 Example 8 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 reducing sugar 7.50 6.80 7.04 6.66 9.06 7.58 3.0 amino acid 2.32 2.10 2.17 2.06 0.00 2.34 1.3 Aluminum Ammonium Sulfate 0.03 0.03 0.03 0.03 0.04 0.03 0.02 First Adjuvant-1 (PVA) 1.10 3.00 0.00 9.79 4.00 0.89 23.07 No. 1 Adjuvant-2 (Cellu) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Second adjuvant (PAE) 1.66 3.00 7.76 0.00 4.00 0.89 21.07 coupling agent 0.04 0.04 0.04 0.04 0.05 0.04 0.03 water repellent 0.33 0.30 0.31 0.29 0.40 0.33 0.21 anti-vibration oil 0.56 0.51 0.53 0.50 0.68 0.57 0.13 ammonia 0.38 0.34 0.35 0.33 0.45 0.38 0.24 water 86.07 83.87 81.76 80.30 81.31 86.94 50.93 total amount 100 100 100 100 100 100 100 Solids content of the composition (wt%) 10.03 9.58 10.03 10.04 9.96 10.0 10.33

Table 3 shows the compound names and physical properties of the first reinforcing agent used in Examples and Comparative Examples.

division compound name Properties first adjuvant-1 polyvinyl alcohol Mw: 22,000±2,000 g/mol first adjuvant-2 Hydroxyethyl Cellulose (Natrosol 250) Mw: 90,000g/mol

experimental example. Binding of Fibrous Materials Using Aqueous Binder Composition

The binder composition of the Examples and Comparative Examples is sprayed on the glass fibers coming down to the collecting chamber at a rate of 2,100 kg per hour by passing the high-temperature glass water through a spinner, and then spraying the binder composition in an amount of 16 L/min, followed by a drying process to glass got the material. A specimen was prepared by cutting the prepared glass material to a size of 100 mm X 100 mm X 50 mm (width X length X thickness). Thereafter, the physical properties of the specimens were measured in the following manner, and the results are shown in Table 4.

(1) Compression rate

After binding the specimen to the jig for measuring compressibility, place it in the center of the universal testing machine. Thereafter, the compressed displacement was measured under a load of 40 kgf, and the compressibility was measured using three specimens of each of Examples and Comparative Examples, and an arithmetic mean value was calculated. At this time, the compression ratio was calculated by Equation 1 below.

[Equation 1]

Compressibility (%) = [(initial thickness-compressive displacement)/initial thickness] X 100

(2) Absorption

Three samples were prepared by cutting the glass material to a size of 254mmX254mm (lengthXwidth), and the weight (W1) was measured accurately to 0.01 g. After that, the water tank was filled with water at room temperature from the bottom to 10Steps (30mm per 1step), put the sample, and then the screen (square mesh wire mesh) was fixed so that it came to 7Steps from the bottom, and it was absorbed for 15 minutes. After 15 minutes, the sample was taken out, and one corner was held with a fingertip and stood upright for 150±5 seconds to allow the water droplets to fall. After that, the sample was placed on a previously weighed silver foil dish (W2), the weight was accurately measured to 0.01 g, and the average value (W3) of the three samples was calculated. In addition, the amount of absorption was calculated by Equation 2 below.

[Equation 2]

Absorption (kg/m ² ) = [(W3 - W2 - W1] X 15.5

(3) Formaldehyde emission

After leaving the specimen in a small chamber according to the small chamber method specified in KS M ISO 16000 and KS M 1998, chamber air was collected on the 7th day, and the collected air was analyzed by HPLC (liquid chromatography). The specific test method followed the method set by the Air Cleaning Association.

(4) dust rate

The glass material was cut to produce 4 samples each having a width of 1.5 cm and a width of 10 cm. After weighing the initial weight, the sample was placed on the dust rate meter and shaken back and forth at a speed of 1 m/min. The total measurement time was carried out for 10 minutes per sample, and the weight of the sample (weight after dust) was measured after the dust rate meter stopped automatically. At this time, the dust rate (%) was calculated by Equation 3 below.

[Equation 3]

Dust rate = [(weight after dust / initial weight)-1] X 100

(5) non-flammable performance

Non-combustibility test for non-combustible and semi-non-combustible of the manufactured specimen was measured through the method specified in KS F ISO 1182. Specifically, the non-combustible performance can be quantified by the extent of the temperature rise in the heating furnace, and in particular, when the temperature does not rise by 20°C or more from the equilibrium temperature in the 750°C heating furnace, it was evaluated as 'pass'.

(6) Cutting processability

When the glass material was cut using a cutter, the appearance of lint and the like in the cut surface was observed to evaluate the cutting workability. At this time, the cutting workability was judged to be excellent in cutting workability as there was no lint in the cut surface, as it was closer to 5, the closer to 0, the more lint was generated on the cut surface.

division compressibility(%) Absorption (kg/m ² ) Formaldehyde emission (mg/m ³ ㆍhr) Dust rate (%) non-flammable performance cutting machinability (goal) below 10 4.0 and below 0.008 or less less than 0.5 pass 4 or more Example 1 9.1 3.2 not detected 0.3 pass 4 Example 2 9.7 2.8 not detected 0.4 pass 4 Example 3 8.9 3.9 not detected 0.2 pass 4.5 Example 4 9.5 3.5 not detected 0.3 pass 4 Example 5 9.2 3.6 not detected 0.4 pass 4 Example 6 9.1 3.1 not detected 0.4 pass 4 Example 7 9.8 3.2 not detected 0.4 pass 4 Example 8 8.7 3.9 not detected 0.3 pass 4.5 Comparative Example 1 11.5 3.2 not detected 0.7 pass 3 Comparative Example 2 9.8 8.0 not detected 0.6 pass 3 Comparative Example 3 10.8 5.7 not detected 0.7 pass 2 Comparative Example 4 11.0 3.9 not detected 0.6 pass 3 Comparative Example 5 8.9 11.0 not detected 0.5 pass 4

As shown in Table 4, the fibrous materials bound by the compositions of Examples 1 to 8 have excellent mechanical properties such as compressibility and cutting workability, have excellent water resistance, have low water absorption, have low formaldehyde emission and dust rate, and are non-combustible. It was.

On the other hand, Comparative Example 1 not including the first reinforcing agent and Comparative Example 4 in which the total amount (based on solid content) of the first reinforcing agent and the second reinforcing agent were small were insufficient in compressibility and cutting workability, and had a high dust ratio.

In addition, Comparative Example 2 without the second reinforcing agent lacked water resistance, so the water absorption amount was high, the dust ratio was high, and the cutting workability was insufficient.

In addition, Comparative Example 3, which does not contain amino acids, lacks compressibility and cutting workability, lacks water resistance, has a large amount of water absorption, and has a high dust rate.

In addition, Comparative Example 5, in which the total amount of the first reinforcing agent and the second reinforcing agent was excessive (based on solid content), lacked water resistance, had a large water absorption, and had a high dust rate.

Claims (10)

A composition comprising a reducing sugar, an amino acid, a first adjuvant and a second adjuvant, comprising:
The first reinforcing agent is a resin having a weight average molecular weight of 5,000 to 200,000 g/mol including a hydroxyl group,
The second reinforcing agent is a polyamide-based resin,
The total amount of the first reinforcing agent and the second reinforcing agent is 3 to 50% by weight based on the solid content of the composition,
An aqueous binder composition comprising the first reinforcing agent and the second reinforcing agent in a weight ratio of 1:0.1 to 1:5.0 based on solid content. delete The method according to claim 1,
The first reinforcing agent is an aqueous binder composition comprising a repeating unit represented by the following Chemical Formula 1:
[Formula 1]

In Formula 1,
R ¹ is a substituted or unsubstituted aliphatic hydrocarbon group having 2 to 20 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 20 carbon atoms,
n is an integer from 100 to 5,000. The method according to claim 1,
An aqueous binder composition comprising 0.5 to 20 parts by weight of a reducing sugar and 0.5 to 10 parts by weight of an amino acid. A fibrous material bound using the aqueous binder composition of any one of claims 1, 3 and 4. 6. The method of claim 5,
The fibrous material is a bound fibrous material in which the emission amount of the volatile organic compound measured by the small chamber method described in KS M ISO 16000-9 is 0.008 mg/m ^{3 ㆍhr or less.} The method according to claim 1,
The second reinforcing agent is prepared from a first monomer containing an amine group, a second monomer containing a carboxy group, and a third monomer containing an epoxy group, an aqueous binder composition. The method according to claim 1,
The first reinforcing agent is a resin having a weight average molecular weight of 15,000 to 100,000 g/mol, an aqueous binder composition. The method according to claim 1,
The total amount of the solid content of the first reinforcing agent and the second reinforcing agent is 6 to 30% by weight based on the solid content of the composition, the aqueous binder composition. The method according to claim 1,
An aqueous binder composition comprising the first reinforcing agent and the second reinforcing agent in a weight ratio of 1:0.5 to 1:1.5 based on solid content.