KR20230078842A - Flame-retardant and self-extinguishing polyurethane foam composition having excellent shock-absorbing performance and high strength and method thereof - Google Patents

Abstract

In the present invention, 30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, and 1 to 10 parts by weight of an ink, based on 100 parts by weight of a polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol. 0.1 to 10 parts by weight of a crosslinking agent, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant and an NCO% value in the range of 20 to 50 Including 10 to 70 parts by weight of an isocyanate-based curing agent having;
The polyol mixture includes at least one selected from the group consisting of polyester-based polyols, polyether-based polyols, and polycaprolactone-based polyols, and mixtures thereof;
The flame retardant is a mixture of a phosphorus-based flame retardant and a melamine-based flame retardant in a weight ratio of 1:0.1 to 0.6;
The filler includes at least one selected from the group consisting of calcium carbonate, wollastonite, potassium titanate, spicules, and mixtures thereof;
The organometallic compound-based catalyst includes at least one selected from the group consisting of potassium octylate, cobalt naphthenate, nickel acetylacetonate, and mixtures thereof;
The foam control agent is a silicone-based foam control agent;
By using the isocyanate-based curing agent comprising at least one selected from the group consisting of polymeric methylene diphenyl diisocyanate (PMDI), modified methylene diphenyl diisocyanate, and mixtures thereof;
In general, household items including electronic devices, sports and medical, and automobiles, especially between cells of electric vehicle batteries; Or, it relates to a flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance so that it can be applied to the plate surface of a module including one or more cells and used very usefully, and a method for manufacturing the same.

Description

Flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance and method for producing the same

The present invention relates to electronic devices, sports and medical applications, and household items including automobiles, in particular, between cells of electric vehicle batteries; Or, it relates to a flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance so that it can be applied to the plate surface of a module including one or more cells and used very usefully, and a method for manufacturing the same.

Polyurethane foam is relatively inexpensive, easy to mold, has high elasticity, and can be mass-produced as a product with a wide range of densities, so it is used for electronic devices such as computers and communications, for sports and medical purposes, and for cushions and dustproof materials for automobiles. It is widely used in all household goods, including

These polyurethane foams are characterized by excellent resilience against impact. Resilience is important in order to manufacture a polyurethane foam having excellent shock absorption in the polyurethane foam. When an impact is applied to the polyurethane foam, its characteristics may depend on how quickly the impact is absorbed and alleviated.

However, when the polyurethane foam is used for various purposes, the polyurethane foam must maintain a certain strength in order to exhibit appropriate properties, and the crosslinking density of the polyurethane foam must be increased to maintain this strength. However, since the crosslinking density and shock absorbency are inversely proportional, it is necessary to find the optimal point of these two factors.

In addition, polyurethane foam is flammable, and once ignited, there is a problem of uncontrollable combustion. In order to solve this problem, a method of imparting flame retardancy by laminating a sheet or panel having flame retardancy on one surface of polyurethane foam has been mainly used. However, since this does not fundamentally impart flame retardancy to polyurethane foam, the flame retardant effect is limited, and the manufacturing process is complicated and the manufacturing cost is increased. In addition, in order to impart flame retardancy to polyurethane foam itself, a flame retardant composed of a halogen compound such as a bromine compound or a chlorine compound is added, which may cause human and environmental problems due to toxic gas during combustion.

Accordingly, it is necessary to develop a polyurethane foam having excellent flame retardancy and self-extinguishing properties while maintaining high shock absorption and strength.

Republic of Korea Patent No. 10-0682398 Republic of Korea Patent No. 10-2255391

The present invention has been made to solve the above-mentioned problems, and one embodiment of the present invention maintains high density and high strength, excellent shock absorption and resilience, and at the same time, excellent shock absorption and high strength having excellent flame retardancy and self-extinguishing. It is intended to provide a flame retardant and self-extinguishing polyurethane foam composition having performance and a manufacturing method thereof.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

One embodiment of the present invention is based on 100 parts by weight of a polyol mixture having a weight average molecular weight of 100 to 5000 g / mol, 30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, ink 1 to 10 parts by weight, 0.1 to 10 parts by weight of a crosslinking agent, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant, and 20 to 50 parts by weight Including 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value;

The polyol mixture includes at least one selected from the group consisting of polyester-based polyols, polyether-based polyols, and polycaprolactone-based polyols, and mixtures thereof;

The flame retardant is a mixture of a phosphorus-based flame retardant and a melamine-based flame retardant in a weight ratio of 1:0.1 to 0.6;

The filler includes at least one selected from the group consisting of calcium carbonate, wollastonite, potassium titanate, spicules, and mixtures thereof;

The organometallic compound-based catalyst includes at least one selected from the group consisting of potassium octylate, cobalt naphthenate, nickel acetylacetonate, and mixtures thereof;

The foam control agent is a silicone-based foam control agent;

The isocyanate-based curing agent includes at least one selected from the group consisting of polymeric methylene diphenyl diisocyanate (PMDI), modified methylene diphenyl diisocyanate, and mixtures thereof. A self-extinguishing polyurethane foam composition is provided.

The polyol mixture has 2 functional groups, 10 to 40% by weight of a polyester polyol having a weight average molecular weight in the range of 200 to 5000 g/mol, 2 or 3 functional groups, and a weight average molecular weight of 200 to 5000 g/mol. 10 to 40% by weight of a polyether-based polyol, 2 functional groups, 0 to 40% by weight of a polycaprolactone-based polyol having a weight average molecular weight in the range of 100 to 2000 g/mol and 3 functional groups, and a weight average molecular weight 0 to 40% by weight of a polycaprolactone-based polyol in the range of 100 to 2000 g/mol;

The organometallic compound-based catalyst is a mixture of potassium octylate, cobalt naphthenate, and nickel acetylacetonate in a weight ratio of 1:0.1 to 0.5:0.1 to 0.5;

The isocyanate-based curing agent may be a mixture of polymeric methylene diphenyl diisocyanate (PMDI) and modified methylene diphenyl diisocyanate in a weight ratio of 1:2 to 10.

The filler may include 100 parts by weight of calcium carbonate, 20 to 80 parts by weight of wollastonite, 20 to 80 parts by weight of potassium titanate, and 1 to 10 parts by weight of spicules.

The spicule is an acicular spongilla lacustris spicule whose surface is modified to be hydrophilic;

The needle-shaped Spongilla lacustris spicules whose surface is modified to be hydrophilic are supported by immersing the crushed Spongilla lacustris in a hydrochloric acid solution, then heating and ultrasonicating by adding hydrogen peroxide to extract the spongilla lacustris spicules doing; immersing the extracted Sponzilla lacustris spicules in a hydrochloric acid solution, washing them with phosphate buffered saline so that the acidity is neutral, and then drying them to obtain needle-shaped Sponzilla lacustris spicules; Forming pores on the surface of the acicular-shaped Sponzilla lacustris spicules by reacting the acicular-shaped Sponzilla lacustris spicules with hydrogen peroxide for 6 to 20 hours; and reacting an acicular spongilla lacustris spicule with pores formed on the surface with a basic compound to modify the surface to be hydrophilic.

The flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength may be used between cells of an electric vehicle battery; Alternatively, it may be attached to a plate surface of a module including one or more cells.

In another embodiment of the present invention, 30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, based on 100 parts by weight of a polyol mixture having a weight average molecular weight in the range of 100 to 5000 g / mol 1 to 10 parts by weight of ink, 0.1 to 10 parts by weight of a crosslinking agent, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, and 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant, preparing a premix mixture; Preparing a polyurethane foam by mixing the premix mixture with 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value in the range of 20 to 50, and injecting nitrogen gas into a foam using a foamer; and heat-treating the polyurethane foam at a temperature of 60 to 200 °C.

According to the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance and a method for producing the same according to an embodiment of the present invention, the cell structure is finely and uniformly organized to have a high density in the range of 0.1 to 0.5 g/cm ³ And while maintaining high strength, there is an effect that can implement excellent shock absorption and resilience. In addition, as a result of the UL-94 vertical flame retardancy test, it has the effect of having excellent flame retardancy and self-extinguishing property of V-0 grade.

As a result, it can be used very usefully in general household goods, including electronic devices such as computers and communications, sports and medical, cushions and dustproof materials for automobiles, etc. Even when applied to high-temperature devices, the risk of ignition can be minimized. There is an effect of improving the durability of the device by effectively absorbing the impact between the parts.

In particular, between cells of an electric vehicle battery; Or, when applied to the plate surface of a module composed of one or more cells, not only insulation effect, but also dimensional stability against cell volume change, excellent stress absorption against vibration and shock, excellent resilience, and high fire resistance There is an effect that can be implemented.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later.

One embodiment of the present invention is based on 100 parts by weight of a polyol mixture having a weight average molecular weight of 100 to 5000 g / mol, 30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, ink 1 to 10 parts by weight, 0.1 to 10 parts by weight of a crosslinking agent, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant, and 20 to 50 parts by weight Including 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value;

The polyol mixture includes at least one selected from the group consisting of polyester-based polyols, polyether-based polyols, and polycaprolactone-based polyols, and mixtures thereof;

The flame retardant is a mixture of a phosphorus-based flame retardant and a melamine-based flame retardant in a weight ratio of 1:0.1 to 0.6;

The filler includes at least one selected from the group consisting of calcium carbonate, wollastonite, potassium titanate, spicules, and mixtures thereof;

The organometallic compound-based catalyst includes at least one selected from the group consisting of potassium octylate, cobalt naphthenate, nickel acetylacetonate, and mixtures thereof;

The foam control agent is a silicone-based foam control agent;

The isocyanate-based curing agent includes at least one selected from the group consisting of polymeric methylene diphenyl diisocyanate (PMDI), modified methylene diphenyl diisocyanate, and mixtures thereof. A self-extinguishing polyurethane foam composition is provided.

According to the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance according to one embodiment of the present invention and a method for producing the same, the cell structure is finely and uniformly organized, so that the range of 0.1 to 0.5 g/cm ³ While maintaining high density and high strength, there is an effect that can implement excellent shock absorption and resilience. In addition, as a result of the UL-94 vertical flame retardancy test, it has the effect of having excellent flame retardancy and self-extinguishing property of V-0 grade.

As a result, it can be used very usefully in general household goods, including electronic devices such as computers and communications, sports and medical, cushions and dustproof materials for automobiles, etc. Even when applied to high-temperature devices, the risk of ignition can be minimized. There is an effect of improving the durability of the device by effectively absorbing the impact between the parts.

In particular, between cells of an electric vehicle battery; Or, when applied to the plate surface of a module composed of one or more cells, not only insulation effect, but also dimensional stability against cell volume change, excellent stress absorption against vibration and shock, excellent resilience, and high fire resistance There is an effect that can be implemented.

More specifically, the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance according to an embodiment of the present invention is based on 100 parts by weight of a polyol mixture having a weight average molecular weight in the range of 100 to 5000 g / mol, flame retardant 30 to 90 parts by weight, expanded graphite 1 to 20 parts by weight, filler 5 to 30 parts by weight, ink 1 to 10 parts by weight, crosslinking agent 0.1 to 10 parts by weight, organometallic compound catalyst 0.1 to 5 parts by weight, foam stabilizer 0.1 to 10 parts by weight 5 parts by weight, 0.1 to 5 parts by weight of a phosphoric acid ester type anionic surfactant and 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value in the range of 20 to 50.

First, the polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol reacts with an isocyanate-based curing agent to realize excellent shock absorption and resilience while maintaining high density and high strength. At the same time, in order to maintain appropriate viscosity and improve workability, the weight average molecular weight of the polyol mixture may be more preferably used in the range of 100 to 5000 g / mol.

The above effect can be further improved by using the polyol mixture containing at least one selected from the group consisting of polyester-based polyols, polyether-based polyols, polycaprolactone-based polyols, and mixtures thereof.

At this time, the polyester-based polyol has excellent tensile strength, thermal stability and chemical resistance due to the strong interaction of ester bonds, and functions to exhibit good elasticity even at low temperatures.

More specifically, the polyester polyol obtained by condensation of a dicarboxylic acid and a diol may be preferably used.

At this time, non-limiting examples of the dicarboxylic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, terephthalic acid, isophthalic acid, maleic acid, fumaric acid, At least one selected from the group consisting of itaconic acid, tetrabromophthalic acid, trimeritic acid or ester derivatives thereof, acid anhydrides thereof, and mixtures thereof may be preferably used.

In addition, non-limiting examples of the diol include ethylene glycol, propylene glycol, butanediol, pentanediol, 1,6-hexanediol, 1,8-octanediol, neopentylglycol, trimethylolpropane, glycerin, and pentaerythritol. At least one selected from the group consisting of quinitol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, lypropylene glycol, diglycerin, dextrose, sorbitol, and mixtures thereof can be preferably used. there is.

More preferably, the polyester-based polyol has two functional groups and a weight average molecular weight ranging from 200 to 5000 g/mol.

In addition, since the polyether-based polyol has an -O- bond that is easily rotated freely in the molecule, it provides flexibility to the molecule and functions to exhibit mechanical properties such as excellent elasticity, compression set, and elongation even at low temperatures.

More specifically, the polyether-based polyol may preferably be obtained by polymerization of a polyfunctional alcohol or a polyfunctional amine and an alkylene oxide.

At this time, non-limiting examples of the polyfunctional alcohol, ethylene glycol, diethylene glycol, glycerin, trimethanol propane, pentaerythritol, dipentaerythritol, α-methylglucoside, xylitol, sorbitol, sugar, and mixtures thereof One or more selected from the group consisting of may be preferably used.

In addition, a non-limiting example of the multifunctional amine is one selected from the group consisting of ethylenediamine, diethylenetriamine, triethanolamine, ortho-toluenediamine, diphenylmethanediamine, diethanolamine, and mixtures thereof Any of the above can be preferably used.

In addition, the alkylene oxide compound is a compound having at least one alkylene oxide group, for example, ethylene oxide, propylene oxide (1,2-epoxypropane), butylene oxide (1,4-epoxybutane), 1, 2-epoxybutane, 2,3-epoxybutane, 1,2-epoxypentane, 1,2-epoxyhexane, 1,2-epoxyheptane, 1,2-epoxycyclopentane, 1,2-epoxycyclohexane, a At least one selected from the group consisting of millen oxide, styrene oxide, and mixtures thereof may be preferably used.

More preferably, the polyether-based polyol has 2 or 3 functional groups and a weight average molecular weight ranging from 200 to 5000 g/mol.

The polycaprolactone-based polyol functions to improve heat resistance, water resistance and workability. Considering the improvement effect described above, the polycaprolactone-based polyol is preferably contained in the range of 20 to 60% by weight in the polyol mixture.

More specifically, the polycaprolactone-based polyol obtained by ring-opening polymerization of ε-caprolactone using a polyol initiator or a polyamine initiator can be preferably used.

At this time, non-limiting examples of the polyol initiator, ethylene glycol, propylene glycol, 1,4-butylene glycol, 1,3-butylene glycol, 1,6-hexanediol, neopentyl glycol, bisphenol A, reso diols such as lecin; triols such as glycerin, 1,2,6-hexanetriol, and 1,1,1-tris(hydroxymethyl)propane; tetraols such as pentaerythritol, erythritol, and methyl glucoside; hexaols such as sorbitol and dipentaerythritol; At least one selected from the group consisting of octanol such as sucrose and mixtures thereof can be preferably used.

In addition, non-limiting examples of the polyamine initiator include diamines such as ethylenediamine, propylenediamine, hexamethylenediamine, and hydrazine; At least one selected from the group consisting of trifunctional or higher functional polyamines such as diethylenetriamine, triethylenetetramine, and tetraethylenepentamine, and mixtures thereof may be preferably used.

Non-limiting examples of commercially available polycaprolactone-based polyols include Tone™ 0240, 1241, 2241, or 1231; Capa™ 2043, 2077A, 2100A, 2125, 2205, 2201, 2101A, 2123A, 2161A, 2200A, 2200D, 2200P, 2201A, 2203A, 2209, 2302A, 2303, 2304, 2402, 2403D, 2054, 2803, 3022, 3031, 3041, 3091, 3201, 3301, 4801, 7201A, 7203, HCl060, or HCl100; Or Placcel™ 205, 208, 210, 220, 220 CPB, 230, 230 CP, 240 or 240 CP, and at least one selected from the group consisting of mixtures thereof may be preferably used.

More preferably, the polycaprolactone-based polyol has 2 or 3 functional groups and a weight average molecular weight ranging from 100 to 2000 g/mol.

More specifically, the polyol mixture is 10 to 40% by weight of a polyester-based polyol having a functional group number of 2 and a weight average molecular weight in the range of 200 to 5000 g/mol in consideration of the above improvement effect; 10 to 40% by weight of a polyether-based polyol having 2 or 3 functional groups and a weight average molecular weight in the range of 200 to 5000 g/mol; 0 to 40% by weight of a polycaprolactone-based polyol having 2 functional groups and a weight average molecular weight in the range of 100 to 2000 g/mol; And a mixture of 0 to 40% by weight of a polycaprolactone-based polyol having a functional group number of 3 and a weight average molecular weight in the range of 100 to 2000 g/mol may be more preferably used.

Hereinafter, the content of other components constituting the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance is based on 100 parts by weight of the polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol.

The flame retardant serves to implement excellent flame retardant performance and heat resistance.

The above effect may be further improved by using a mixture of a phosphorus-based flame retardant and a melamine-based flame retardant in a weight ratio of 1:0.1 to 0.6 as the flame retardant.

At this time, the phosphorus-based flame retardant is a phosphorus-based flame retardant generally used in the art, and the type is not particularly limited, but, for example, a phosphate-based flame retardant, a phosphonate-based flame retardant, a phosphinate-based flame retardant, a phosphazene-based flame retardant, At least one selected from the group consisting of melamine phosphate-based flame retardants, ammonium polyphosphate-based flame retardants, ammonium phosphinate-based flame retardants, phosphophenanthrene-based flame retardants, phosphine oxide-based flame retardants, and mixtures thereof may be preferably used. More preferable phosphorus-based flame retardants include diethyl-N,N-bis(2-hydroxyethyl)aminomethylphosphonate.

In addition, the melamine-based flame retardant is a melamine-based flame retardant commonly used in the art, and the type is not particularly limited, but, for example, melamine phosphate, melamine pyrophosphate, and mixtures thereof One or more selected from the group consisting of may be preferably used.

The flame retardant is preferably contained in an amount of 30 to 90 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight of 100 to 5000 g/mol. If the content of the flame retardant is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the flame retardant is too large, there is a problem that may cause a decrease in strength and compression recovery performance.

The expanded graphite has a layered crystal structure, and when heated, it expands up to 20 to 400 times its original size and induces the formation of porous carbide during combustion, thereby further improving excellent flame retardancy and self-extinguishing properties.

The above effect can be further improved by using the expanded graphite having an expansion rate of 20 to 400 ml/g and a particle diameter of 30 to 500 mesh.

The expanded graphite is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the expanded graphite is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the expanded graphite is too large, there is a problem that may cause a decrease in strength.

While maintaining excellent high density and high strength, the filler increases hardness and improves elastic modulus to realize excellent shock absorption and resilience. It functions to improve flame retardancy and self-extinguishing by improving thermal stability.

The filler is preferably contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight of 100 to 5000 g/mol. If the content of the filler is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the filler is too large, there is a problem that may cause a decrease in workability.

The filler may preferably include at least one selected from the group consisting of calcium carbonate, wollastonite, potassium titanate, spicules, and mixtures thereof.

More preferably, the filler may include 100 parts by weight of calcium carbonate, 20 to 80 parts by weight of wollastonite, 20 to 80 parts by weight of potassium titanate, and 1 to 10 parts by weight of spicules.

At this time, the calcium carbonate provides an excellent filling effect, can maintain high density and high strength, and functions to implement excellent flame retardant performance.

Hereinafter, the content of other components constituting the filler is based on 100 parts by weight of the calcium carbonate.

The wollastonite provides an excellent filling effect and functions to maintain high density and high strength.

The wollastonite is preferably contained in the range of 20 to 80 parts by weight based on 100 parts by weight of the calcium carbonate. If the content of the wollastonite is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the wollastonite is too large, there is a problem that workability may be deteriorated.

The potassium titanate provides an excellent filling effect and functions to maintain high density and high strength.

The above effect can be further improved by using the potassium titanate having a specific surface area of 0.3 to 3 m ² /g.

The potassium titanate is preferably contained in the range of 20 to 80 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the potassium titanate is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the potassium titanate is too large, there is a problem that price competitiveness may be lowered.

The spicule imparts an excellent filling effect, while maintaining high density and high strength, as well as excellent shock absorption and resilience. It functions to improve flame retardancy and self-extinguishing.

More specifically, the spicule has an effect of further improving the above effect by using an acicular spongilla lacustris spicule whose surface is modified to be hydrophilic.

The needle-shaped Sponzilla lacustris spicules whose surface is modified to be hydrophilic is obtained by immersing the crushed Sponzilla lacustris in a hydrochloric acid solution, then heating and ultrasonicating by adding hydrogen peroxide to obtain Sponzilla lacustris spicules. extracting; immersing the extracted Sponzilla lacustris spicules in a hydrochloric acid solution, washing them with phosphate buffered saline so that the acidity is neutral, and then drying them to obtain needle-shaped Sponzilla lacustris spicules; Forming pores on the surface of the acicular-shaped Sponzilla lacustris spicules by reacting the acicular-shaped Sponzilla lacustris spicules with hydrogen peroxide for 6 to 20 hours; and reacting an acicular spongilla lacustris spicule with pores formed on the surface with a basic compound to modify the surface to be hydrophilic.

At this time, the crushed Spongilla lacustris is preferably crushed to have an average particle diameter of 10 to 50 μm.

In addition, the basic compound is generally known in the art, and the type is not particularly limited, but calcium hydroxide (Ca(OH) ₂ ) at a concentration of 3 to 7 N and magnesium hydroxide (Mg(OH) at a concentration of 3 to 7 N) ) ₂ ) is mixed in a volume ratio of 1: 1 to 3, and excellent strength improvement and flame retardant performance improvement effects can be obtained.

The spicule is preferably contained in the range of 1 to 10 parts by weight based on 100 parts by weight of the calcium carbonate. If the content of the spicule is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the spicule is too large, there is a problem that price competitiveness may be lowered.

The ink functions to represent color.

As the ink, a conventional ink containing colored pigments or dyes such as titanium dioxide and carbon black may be used.

The ink is preferably contained in the range of 1 to 10 parts by weight based on 100 parts by weight of the polyol mixture having the weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the ink is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the ink is too large, there is a problem that mechanical properties may be deteriorated.

The crosslinking agent functions to implement high density and high strength by strengthening intermolecular bonds.

These crosslinking agents are generally used in the art and are not particularly limited in type, but examples include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, and 1,6-hexanediol. , polyhydric alcohols such as neopentyl glycol, glycerin, trimethylolpropane, triethanolamine, and alkylene oxide adducts of bisphenol A, polyamines such as diethyltoluenediamine, chlorodiaminobenzene, ethylenediamine, and 1,6-hexanediamine. And one or more selected from the group consisting of mixtures thereof may be used.

The crosslinking agent is preferably contained in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the polyol mixture having the weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the cross-linking agent is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the cross-linking agent is too large, there is a problem that shock absorption and resilience may be reduced.

The organometallic compound-based catalyst functions to realize excellent strength, shock absorption and resilience by keeping the foam cell formation time long and finely and uniformly organizing the cells.

The organometallic compound-based catalyst may preferably include at least one selected from the group consisting of potassium octylate, cobalt naphthenate, nickel acetylacetonate, and mixtures thereof.

More preferably, the above effect can be further improved by using a mixture of potassium octylate, cobalt naphthenate and nickel acetylacetonate in a weight ratio of 1: 0.1 to 0.5: 0.1 to 0.5 as the organometallic compound-based catalyst. there is.

The organometallic compound-based catalyst is preferably contained in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the organometallic compound-based catalyst is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the organometallic compound-based catalyst is too large, workability may be deteriorated.

The foam stabilizer functions to realize excellent strength, shock absorption and resilience by forming pores of a uniform size and distribution by maintaining stable dispersibility of gas during curing into a foam.

The foam control agent is a silicone-based foam control agent, and more specifically, a polysiloxane-polyalkylene oxide copolymer may be preferably used.

The foam control agent is preferably contained in the range of 0.1 to 5 parts by weight based on 100 parts by weight of the polyol mixture having the weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the foam stabilizer is too small, there is a problem that the above improvement effect may be insufficient, and if the content of the foam stabilizer is too large, workability may be deteriorated.

The phosphoric acid ester-type anionic surfactant not only forms pores of a uniform size and distribution by maintaining stable dispersibility of gas during curing into a foam, but also has excellent strength, shock absorption and It functions to realize excellent flame retardancy and self-extinguishing as well as resilience.

These phosphate ester type anionic surfactants are alkyl (C8 to 12) phosphate esters, polyoxyethylene alkyl (C12 to 18) ether phosphate esters, polyoxyethylene alkyl (C8 to 12) phenyl ether phosphate esters, polyoxyethylene alkyl (C8 to 12) phosphate ester of phenyl ether polymer, polyoxyethylene phenyl phenyl ether phosphate ester, polyoxyethylene benzyl phenyl ether phosphate ester, polyoxyethylene styryl phenyl ether phosphate ester, polyoxyethylene styryl phenyl ether polymer Phosphate esters of, phosphoric acid esters of polyoxyethylene polyoxypropylene block polymers, phosphatidylcholine, phosphatidylethanolimine, and condensed phosphoric acid (eg, tripolyphosphoric acid), and salts of these phosphoric acid esters can be used.

The phosphoric acid ester type anionic surfactant is preferably contained in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight in the range of 100 to 5000 g/mol. If the content of the phosphate ester-type anionic surfactant is too small, there is a problem that the above-described improvement effect may be insufficient, and if the content of the phosphate ester-type anionic surfactant is too large, workability may be reduced There is a problem.

The isocyanate-based curing agent having an NCO% value in the range of 20 to 50 forms a urethane bond with the polyol mixture and forms a polyurethane network to realize excellent shock absorption and resilience while maintaining high density and high strength.

Non-limiting examples of the isocyanate-based curing agent include ethylene diisocyanate, toluene diisocyanate, tolylene diisocyanate, methylene diphenyl diisocyanate, tetramethylxylene diisocyanate, naphthalene diisocyanate, xylene diisocyanate, and polymethylene polyphenylene. One selected from the group consisting of isocyanate, hydrogenated methylene diphenyl diisocyanate, hydrogenated tolylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, lysine diisocyanate, modified products thereof and mixtures thereof more can be used. In this case, the modified product may be a prepolymer-type modified product, a modified nurate product, a modified urea product, a modified product of carbodiimide, a modified product of arophanate, a modified product of biuret, and the like.

More preferably, the isocyanate-based curing agent may include at least one selected from the group consisting of polymeric methylene diphenyl diisocyanate (PMDI), modified methylene diphenyl diisocyanate, and mixtures thereof.

More preferably, the isocyanate-based curing agent is a mixture of polymeric methylene diphenyl diisocyanate (PMDI) and modified methylene diphenyl diisocyanate in a weight ratio of 1: 2 to 10 to further improve the above effect. At this time, as the modified methylene diphenyl diisocyanate, uretonimine-modified methylene diphenyl diisocyanate may be more preferably used.

The isocyanate-based curing agent having an NCO% value in the range of 20 to 50 is preferably contained in an amount of 10 to 70 parts by weight based on 100 parts by weight of the polyol mixture having a weight average molecular weight of 100 to 5000 g / mol. If the content of the isocyanate-based curing agent having an NCO% value in the range of 20 to 50 is too small, there is a problem that the above improvement effect may be insufficient, and the content of the isocyanate-based curing agent having an NCO% value in the range of 20 to 50 If there are too many of these, there is a problem in that the hardness is excessively high and the shock absorption performance may be deteriorated.

The flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength may be used between cells of an electric vehicle battery; Alternatively, it may be attached to a plate surface of a module including one or more cells. As a result, there is an effect capable of realizing not only the insulation effect, but also dimensional stability against volume change of the cell, excellent stress absorption for vibration and impact, excellent resilience and high fire resistance.

In another embodiment of the present invention, 30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, based on 100 parts by weight of a polyol mixture having a weight average molecular weight in the range of 100 to 5000 g / mol 1 to 10 parts by weight of ink, 0.1 to 10 parts by weight of a crosslinking agent, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, and 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant, preparing a premix mixture; Preparing a polyurethane foam by mixing the premix mixture with 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value in the range of 20 to 50, and injecting nitrogen gas into a foam using a foamer; and heat-treating the polyurethane foam at a temperature of 60 to 200 °C.

Each of the components included in the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance is as described in "Flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance".

The flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance is environmentally friendly and can realize the above excellent effects by performing mechanical foaming using nitrogen as a foaming agent. More specifically, the foaming may be performed by foaming by injecting nitrogen gas at a pressure of 1 to 8 bar.

In addition, non-limiting examples of the foaming machine may include an automatic mixing injection type foaming machine, an automatic mixing type injection foaming machine, and the like.

In addition, the heat treatment temperature is such that the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance of the present invention does not cause discoloration (yellowing) or thermal deformation, improves tensile strength and tear strength, and further compresses properties. It is preferably carried out at a temperature range of 60 to 200 ° C. to effectively promote the polyaddition reaction and promote high molecular weight of the polyurethane foam.

According to the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance and a method for producing the same according to an embodiment of the present invention, the cell structure is finely and uniformly organized to have a high density in the range of 0.1 to 0.5 g/cm ³ And while maintaining high strength, there is an effect that can implement excellent shock absorption and resilience. In addition, as a result of the UL-94 vertical flame retardancy test, it has the effect of having excellent flame retardancy and self-extinguishing property of V-0 grade.

As a result, it can be used very usefully in general household goods, including electronic devices such as computers and communications, sports and medical, cushions and dustproof materials for automobiles, etc. Even when applied to high-temperature devices, the risk of ignition can be minimized. There is an effect of improving the durability of the device by effectively absorbing the impact between the parts.

In particular, between cells of an electric vehicle battery; Or, when applied to the plate surface of a module composed of one or more cells, not only insulation effect, but also dimensional stability against cell volume change, excellent stress absorption against vibration and shock, excellent resilience, and high fire resistance There is an effect that can be implemented.

Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. this is possible

<Production Example 1>

Preparation of needle-shaped Spongilla lacustris spicules with pores formed on the surface

The crushed Sponzilla lacustris was immersed in 0.1M hydrochloric acid solution for 15 minutes, then 5 ml/g of 30% (w/w) hydrogen peroxide was added and heated for 2 hours, followed by 1 hour at 300 W and 40 kHz. After sonication while, by repeating the process of filtering and washing with 500ml of purified water three times, Spongilla lacustris spicules were extracted.

Thereafter, the extracted Sponzilla lacustris spicules were immersed in 0.5M hydrochloric acid solution for 1 day, washed with phosphate buffered saline to neutral acidity, washed three times with purified water, and then dried at 50 ° C. Got my brother's Spongilla lacustris spicules.

Thereafter, 20 ml/g of 35% (w/w) hydrogen peroxide was added to the acicular spongilla lacustris spicules, stirred and reacted for 15 hours, and pores in the acicular spongilla lacustris spicules ( pores) were formed. Thereafter, the process of filtering and washing with 500 ml of purified water was repeated three times, and then dried at 50 ° C. to obtain needle-shaped spongilla lacustris spicules having pores formed on the surface.

<Production Example 2>

Preparation of acicular spongilla lacustris spicules with surface modified to be hydrophilic

The crushed Sponzilla lacustris was immersed in 0.1M hydrochloric acid solution for 15 minutes, then 5 ml/g of 30% (w/w) hydrogen peroxide was added and heated for 2 hours, followed by 1 hour at 300 W and 40 kHz. After sonication while, by repeating the process of filtering and washing with 500ml of purified water three times, Spongilla lacustris spicules were extracted.

Thereafter, the extracted Sponzilla lacustris spicules were immersed in 0.5M hydrochloric acid solution for 1 day, washed with phosphate buffered saline to neutral acidity, washed three times with purified water, and then dried at 50 ° C. Got my brother's Spongilla lacustris spicules.

Thereafter, 20 ml/g of 35% (w/w) hydrogen peroxide was added to the acicular spongilla lacustris spicules, stirred and reacted for 15 hours, and pores in the acicular spongilla lacustris spicules ( pores) were formed. Thereafter, the process of filtering and washing with 500 ml of purified water was repeated three times, and then dried at 50 ° C. to obtain needle-shaped spongilla lacustris spicules having pores formed on the surface.

10 ml/g of 1N NaOH was added to the acicular spongilla lacustris spicule having pores formed on the surface, and reacted at 40° C. for 1 hour. Thereafter, the process of filtering and washing with 500 ml of purified water was repeated three times, and then dried at 50 ° C. to obtain acicular spongilla lacustris spicules whose surface was modified to be hydrophilic (hydroxyl groups).

<Production Example 3>

Preparation of acicular spongilla lacustris spicules with surface modified to be hydrophilic

The crushed Sponzilla lacustris was immersed in 0.1M hydrochloric acid solution for 15 minutes, then 5 ml/g of 30% (w/w) hydrogen peroxide was added and heated for 2 hours, followed by 1 hour at 300 W and 40 kHz. After sonication while, by repeating the process of filtering and washing with 500ml of purified water three times, Spongilla lacustris spicules were extracted.

Thereafter, the extracted Sponzilla lacustris spicules were immersed in 0.5M hydrochloric acid solution for 1 day, washed with phosphate buffered saline to neutral acidity, washed three times with purified water, and then dried at 50 ° C. Got my brother's Spongilla lacustris spicules.

Thereafter, 20 ml/g of 35% (w/w) hydrogen peroxide was added to the acicular spongilla lacustris spicules, stirred and reacted for 15 hours, and pores in the acicular spongilla lacustris spicules ( pores) were formed. Thereafter, the process of filtering and washing with 500 ml of purified water was repeated three times, and then dried at 50 ° C. to obtain needle-shaped spongilla lacustris spicules having pores formed on the surface.

5 N calcium hydroxide (Ca(OH) ₂ ) and 5 N magnesium hydroxide (Mg(OH) ₂ ) were added to the needle-shaped Spongilla lacustris spicule with pores formed on the surface 1: 10 ml/g of a basic compound mixed in a volume ratio of 1.5 was added and reacted at 40° C. for 1 hour. Thereafter, the process of filtering and washing with 500 ml of purified water was repeated three times, and then dried at 50 ° C. to obtain acicular spongilla lacustris spicules whose surface was modified to be hydrophilic (hydroxyl groups).

<Examples and Comparative Examples>

A flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance and a comparative composition were prepared as shown in Table 1 below. More specifically, after preparing a premix mixture by mixing a polyol mixture, a flame retardant, expanded graphite, a filler, an ink, a crosslinking agent, an organometallic compound-based catalyst, a foam stabilizer, and a phosphoric acid ester-type anionic surfactant; While mixing the premix mixture with an isocyanate-based curing agent, polyurethane foam was prepared by injecting nitrogen gas at a pressure of 5 bar using a foamer to foam. Then, the polyurethane foam was heat-treated at a temperature of 150 °C.

Classification (parts by weight) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 polyol mixture 100 100 100 100 100 (weight%) Polyester-based polyols ⁽¹⁾
(2) 20 35 25 100 50 Polyether Polyols ⁽²⁾
(2) 40 30 25 - 50 Polyether-based polyols ⁽³⁾
(3) - 35 25 - - Polycaprolactone-based polyols ⁽⁴⁾
(2) 40 - 25 - - flame retardant 78 78 78 78 78 (weight ratio) phosphorus flame retardant
(Diethyl-N,N-bis(2-hydroxyethyl)aminomethyl phosphonate) One One One - - phosphorus flame retardant
(tris(2-chloropropyl)phosphate) - - - One One Melamine flame retardant
(Melamine pyrophosphate) 0.5 0.5 0.5 - One Expanded Graphite ⁽⁵⁾ 7 7 7 - 7 filler 15 15 15 15 15 (parts by weight) calcium carbonate 100 100 100 100 100 wollastonite 50 50 50 - 10 potassium titanate
(specific surface area: 1.8 m ² /g) 45 45 45 - - spicule 5
[Production Example 1] 5
[Production Example 2] 5
[Production Example 3] - - ink 5 5 5 5 5 Crosslinking agent (diethylene glycol) 2.2 2.2 2.2 2.2 2.2 Organometallic compound catalyst 2 2 2 2 2 (weight ratio) potassium octylate One One One - - cobalt naphthenate - 0.5 0.2 - - Nickel Acetylacetonate - - 0.3 - - zirconium carboxylate - - - One One silicone-based foam stabilizer 2 2 2 - 2 Phosphoric acid ester type anionic surfactant (polyoxyethylene alkyl (C16) ether phosphoric acid ester) One 1.5 1.5 One - Isocyanate curing agent
(NCO%: 31) 45 45 45 45 45 (weight ratio) Polymeric Methylene Diphenyl Diisocyanate (PMDI) One One One One One Urethonimine Modified Methylene Diphenyl Diisocyanate - 4 4 - - Carbodiimide modified methylene diphenyl diisocyanate 4 - - - 4 ⁽¹⁾ Polyester-based polyol (weight average molecular weight: 700 g/mol): one obtained by condensation of dicarboxylic acid (succinic acid) and diol (ethylene glycol and 1,6-hexanediol) is used.
⁽²⁾ Polyether-based polyol (weight average molecular weight: 4000 g/mol): obtained by polymerization of dihydric alcohol (ethylene glycol) and divalent amine (ethylene diamine) with alkylene oxide (ethylene oxide) is used.
⁽³⁾ Polyether-based polyol (weight average molecular weight: 700 g/mol): obtained by polymerization of trihydric alcohol (glycerin) and alkylene oxide (ethylene oxide) is used.
⁽⁴⁾ Polycaprolactone-based polyol (weight average molecular weight: 390 g/mol): obtained by ring-opening polymerization of ε-caprolactone using a polyol initiator (1,3-butylene glycol).
⁽⁵⁾ Expanded graphite: It has an expansion rate of 240 ml/g and a particle size of 280 mesh.

The following test examples are experiments comparing the characteristics of the examples according to the present invention and Comparative Examples 1 and 2 so that the characteristics of Examples 1 to 3 according to the present invention described above can be more easily grasped. that showed the results.

<Test Example>

Performance evaluation was performed on the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance prepared in Example and the comparative composition prepared in Comparative Example, and the results are shown in Table 2 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Density (g/cm) ASTM D3574-01 0.18 0.21 0.30 0.02 0.11 Compressive strength (MPa) ASTM D1621 1.9 1.9 2.0 0.7 1.5 Tensile strength (MPa) ISO 1926 2.0 2.1 2.3 1.2 1.8 shore hardness
(shore 00) ASTM D 2240 57 42 35 92 88 20% CFD (kPa) ASTM D3574 33 29 18 55 47 60% CFD (kPa) 87 81 64 111 94 dynamic stability(%) ASTM D2632-92
[The lower the value, the better the shock absorption] 4 2 2 37 11 Permanent Compression Reduction (%) KS M 6672: 2016 5.2 5.0 4.8 9.2 7.4 UL-94 vertical flame retardant test V-0 V-0 V-0 V-1 V-0

As can be seen in Table 2, the flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance prepared in Examples of the present invention compared to the comparative composition prepared in Comparative Example, high density and While maintaining high strength, it was confirmed that it had excellent shock absorption and resilience. In addition, as a result of the UL-94 vertical flame retardancy test, it was confirmed that it had excellent flame retardancy and self-extinguishing properties with a V-0 rating.

As described above, those skilled in the art to which the present invention pertains will be able to understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, all of the embodiments described above should be understood as illustrative and not limiting. The scope of the present invention should be construed as including all changes or modifications derived from the meaning and scope of the claims to be described later and their equivalent concepts rather than the above detailed description included in the scope of the present invention.

Claims (6)

30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, 1 to 10 parts by weight of an ink, and a crosslinking agent, based on 100 parts by weight of a polyol mixture having a weight average molecular weight of 100 to 5000 g/mol. 0.1 to 10 parts by weight, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant, and an isocyanate-based having an NCO% value in the range of 20 to 50 Including 10 to 70 parts by weight of a curing agent;
The polyol mixture includes at least one selected from the group consisting of polyester-based polyols, polyether-based polyols, and polycaprolactone-based polyols, and mixtures thereof;
The flame retardant is a mixture of a phosphorus-based flame retardant and a melamine-based flame retardant in a weight ratio of 1:0.1 to 0.6;
The filler includes at least one selected from the group consisting of calcium carbonate, wollastonite, potassium titanate, spicules, and mixtures thereof;
The organometallic compound-based catalyst includes at least one selected from the group consisting of potassium octylate, cobalt naphthenate, nickel acetylacetonate, and mixtures thereof;
The foam control agent is a silicone-based foam control agent;
The isocyanate-based curing agent has excellent shock absorption and high strength performance, characterized by comprising at least one selected from the group consisting of polymeric methylene diphenyl diisocyanate (PMDI), modified methylene diphenyl diisocyanate, and mixtures thereof. A flame retardant and self-extinguishing polyurethane foam composition.
According to claim 1,
The polyol mixture has 2 functional groups, 10 to 40% by weight of a polyester polyol having a weight average molecular weight in the range of 200 to 5000 g/mol, 2 or 3 functional groups, and a weight average molecular weight of 200 to 5000 g/mol. 10 to 40% by weight of a polyether-based polyol, 2 functional groups, 0 to 40% by weight of a polycaprolactone-based polyol having a weight average molecular weight in the range of 100 to 2000 g/mol and 3 functional groups, and a weight average molecular weight 0 to 40% by weight of a polycaprolactone-based polyol in the range of 100 to 2000 g/mol;
The organometallic compound-based catalyst is a mixture of potassium octylate, cobalt naphthenate, and nickel acetylacetonate in a weight ratio of 1:0.1 to 0.5:0.1 to 0.5;
The isocyanate-based curing agent is a flame retardant and self-extinguishing poly having excellent shock absorption and high strength performance, characterized by mixing polymeric methylene diphenyl diisocyanate (PMDI) and modified methylene diphenyl diisocyanate in a weight ratio of 1: 2 to 10 Urethane foam composition.
According to claim 1,
The filler comprises 100 parts by weight of calcium carbonate, 20 to 80 parts by weight of wollastonite, 20 to 80 parts by weight of potassium titanate, and 1 to 10 parts by weight of spicules, flame retardant having excellent shock absorption and high strength performance, and A self-extinguishing polyurethane foam composition.
According to claim 3,
The spicule is an acicular spongilla lacustris spicule whose surface is modified to be hydrophilic;
The needle-shaped Spongilla lacustris spicules whose surface is modified to be hydrophilic are supported by immersing the crushed Spongilla lacustris in a hydrochloric acid solution, then heating and ultrasonicating by adding hydrogen peroxide to extract the spongilla lacustris spicules doing; immersing the extracted Sponzilla lacustris spicules in a hydrochloric acid solution, washing them with phosphate buffered saline so that the acidity is neutral, and then drying them to obtain needle-shaped Sponzilla lacustris spicules; Forming pores on the surface of the acicular-shaped Sponzilla lacustris spicules by reacting the acicular-shaped Sponzilla lacustris spicules with hydrogen peroxide for 6 to 20 hours; And excellent shock absorption and high strength, characterized in that produced by a manufacturing method comprising the step of modifying the surface to be hydrophilic by reacting an acicular spongilla lacustris spicule having pores formed on the surface with a basic compound A flame retardant and self-extinguishing polyurethane foam composition having performance.
According to claim 1,
The flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength may be used between cells of an electric vehicle battery; Or a flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength performance, characterized in that attached to the plate surface of the module comprising one or more cells.
30 to 90 parts by weight of a flame retardant, 1 to 20 parts by weight of expanded graphite, 5 to 30 parts by weight of a filler, 1 to 10 parts by weight of an ink, and a crosslinking agent, based on 100 parts by weight of a polyol mixture having a weight average molecular weight of 100 to 5000 g/mol. Preparing a premix mixture by mixing 0.1 to 10 parts by weight, 0.1 to 5 parts by weight of an organometallic compound catalyst, 0.1 to 5 parts by weight of a foam stabilizer, and 0.1 to 5 parts by weight of a phosphate ester type anionic surfactant;
Preparing a polyurethane foam by mixing the premix mixture with 10 to 70 parts by weight of an isocyanate-based curing agent having an NCO% value in the range of 20 to 50, and injecting nitrogen gas into a foam using a foamer; and
A method for producing a flame retardant and self-extinguishing polyurethane foam composition having excellent shock absorption and high strength, comprising the step of heat-treating the polyurethane foam at a temperature of 60 to 200 ° C.