KR101363419B1 - Hybrid polyurethane foam and method of forming the same - Google Patents

Abstract

Hybrid polyurethane foams and methods of making the same are disclosed. The hybrid polyurethane foam includes at least one silicone diol compound, and preparing a polyol mixture by mixing at least one polyol, at least one silicone diol, and a catalyst among polyester polyol and polyether polyol, polyisocyanate It is prepared through the step of preparing a reaction solution and reacting by mixing the polyol mixture, the polyisocyanate reaction solution and the blowing agent. The hybrid polyurethane foam produced is a raw material having an improved tensile strength and elongation, and thus has a high degree of completeness during processing.

Description

HYBRID POLYURETHANE FOAM AND METHOD OF FORMING THE SAME

The present invention relates to a hybrid polyurethane foam and a method for producing the same, and more particularly, to a hybrid polyurethane foam and a method for producing the hybrid polyurethane foam having an increased tensile strength and elongation and high surface smoothness.

In general, polyurethane foam (foam) is easy to manufacture, excellent shock absorption and resilience, and can be produced in a variety of products, such as electronic devices for computers, communications, sports, medical, automotive cushions, shoes and dustproof materials, etc. Widely used. In particular, the polyurethane foam is usefully used as a sealing member suitable for placement between the edge of a liquid crystal display screen or the edge of a microphone or the like and the inner surface of a case in a display of a portable telecommunication equipment such as a portable telephone.

On the other hand, in the case of polyurethane foam sheet for the production of insoles for shoes is required to have high elongation and tensile strength. Generally, for the production of polyurethane foams, polyester or polyether polyols are used, and soft segments are short because compounds having a relatively small molecular weight and short molecular chains are used. As a result, the original properties of the foam are hard, and the foaming properties can be improved smoothly. However, due to the chemical properties, the elongation is difficult to increase, and in particular, it is possible to soften by a large amount of bubble layer, but it has a disadvantage in that it is difficult to use as an insole member material for shoes, because the tensile strength is formed very low.

In addition, in order to apply polyurethane foam to products such as mobile phones and LCD modules, high surface smoothness is required. This is because the higher the surface smoothness, the better the sealing function, which is a gasket or a foreign matter prevention function.

In order to prepare the polyurethane foam, a process in which a mixture of polyether polyol, polyester polyol, foam stabilizer, filler, curing catalyst, pigment and the like and an aliphatic or aromatic isocyanate compound are reacted in the presence of a foaming agent of water or a gas component. do. In order for polyurethane foams produced in this way to have more improved properties, various efforts have been made, such as the use of various components and changes in the manufacturing method.

An object of the present invention is to provide a hybrid polyurethane foam having excellent physical properties by introducing a silicone-based diol material in the production of polyurethane foam to be applicable to a variety of products.

Another object of the present invention is to provide a method for producing the above-mentioned hybrid polyurethane foam in a short time.

Still another object of the present invention is to provide a product having improved elongation and tensile strength by manufacturing using the hybrid polyurethane foam described above.

In order to achieve the above object, the hybrid polyurethane foam according to the present invention comprises at least one silicone diol compound selected from the group consisting of Compound A, Compound B and Compound C.

<Compound A>

In the said compound A, n represents the integer of 50-70 range.

<Compound B>

In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.

<Compound C>

In said compound C, m represents the integer of the range 4-9, n represents the integer of the range 25-35.

In one embodiment, the hybrid polyurethane foam may have an elongation (%) of 120 or more, and a tensile strength (kgf / cm ² ) of 3 or more.

In one embodiment, the silicon diol compound may form a urethane bond through a reaction with an isocyanate.

Another object of the present invention described above is to prepare a polyol mixture by mixing at least one polyol among polyester polyols and polyether polyols, at least one silicon diol and a catalyst selected from the group consisting of the following compounds A, B and C: step; Preparing a polyisocyanate reaction solution; And mixing and reacting the polyol mixture, the polyisocyanate reaction solution, and a blowing agent.

<Compound A>

In the said compound A, n represents the integer of 50-70 range.

<Compound B>

In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.

<Compound C>

In said compound C, m represents the integer of the range 4-9, n represents the integer of the range 25-35.

In one embodiment, the polyol mixture may further comprise at least one of a surfactant, a filler and a pigment.

In one embodiment, after the reacting step, it may be further performed to heat to a temperature 120 ~ 150 ℃.

In one embodiment, the blowing agent may be any one of a gas containing water or nitrogen.

In one embodiment, the amount of the silicon diol compound is preferably in the range of 3 to 30% by weight of the polyol compound.

In one embodiment, the reaction step is preferably performed within 2 to 5 minutes.

Still another object of the present invention is to prepare a gasket, a sealing material and a hybrid polyurethane foam, wherein at least one silicone diol compound selected from the group consisting of Compound A, Compound B and Compound C is included through a urethane bond with an isocyanate; Achieved by a product comprising a shoe insole.

<Compound A>

In the said compound A, n represents the integer of 50-70 range.

<Compound B>

In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.

<Compound C>

In said compound C, m represents the integer of the range 4-9, n represents the integer of the range 25-35.

The hybrid polyurethane foam according to the embodiment of the present invention configured as described above is intended to include a silicon compound through chemical bonding, and exhibits high elongation, excellent tensile strength properties, and good surface smoothness provided by the silicon compound. Accordingly, the hybrid polyurethane foam requires high elongation and tensile strength and is applied to various fields requiring surface smoothness, thereby improving processing completion.

Hereinafter, a hybrid polyurethane foam according to an embodiment of the present invention and a manufacturing method thereof will be described in detail.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, a hybrid polyurethane foam according to the present invention and a manufacturing method thereof will be described in detail.

Low density polyurethane foams are a mixture of polyether polyols, polyester polyols, foam stabilizers to stabilize foams, fillers to maintain proper elasticity, curing catalysts to induce polymerization reactions, pigments to express colors, etc. And aliphatic or aromatic polyisocyanates are prepared by reacting in the presence of a blowing catalyst comprising water, a gas such as nitrogen, and the like. As a manufacturing method, first, the raw materials are mixed to form a uniform low density polyurethane foam and coated on a substrate such as a polyester film in a constant thickness. It is then cured to produce a low density polyurethane foam, for example in sheet form.

Polyurethane resins generally have a density of about 1, but when they are manufactured in a foam state by injecting air or gas, the density can not be greater than 1, which is expressed as low density.

Examples of the polyol component used in the production of the polyurethane foam according to the embodiment of the present invention include polyester-based polyols and polyether-based polyols. These are active hydrogen-containing components that contain two or more hydroxyl groups in the molecule. Specifically, polyester-based polyols are obtained by reacting dicarboxylic acids with diols. As dicarboxylic acid, succinic acid, glutaric acid, adipic acid, pimeline acid, subberic acid, azelaic acid, sebacic acid, phthalic acid, terephthalic acid, isophthalic acid, maleic acid, fumaric acid, itaconic acid, tetrabromophthalic acid, tri Meritic acid, ester derivatives thereof, acid anhydrides thereof, and the like. These may be used alone or in combination of two or more. Examples of the diol constituting the polyester-based polyol include ethylene glycol, propylene glycol, butanediol, pentanediol, 1,6-hexanediol, 1,8-octanediol, neopentyl glycol, trimethylolpropane, glycerin, pentaerythritol, Quinitol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, polypropylene glycol, diglycerin, textrose, sorbitol and the like. These may be used alone or in combination of two or more.

Examples of the polyether polyols include block or random alkylene oxide adducts such as alcohols and amines. In other words, diols of polyoxyethylene and polyoxypropylene, triols and polyols, polyoxytetramethylene glycols, mixtures thereof, and the like can be given.

Examples of the compound having two or more active hydrogens among the compounds used for preparing the polyether polyol include ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, butylene glycol, and neopentyl glycol. , 1,4-butanediol, 1,6-hexanediol, cyclohexanedimethanol, glycerin, trimethylolpropane, pentaerythritol, 1,2,6-hexanetriol, 1,2,4-butanetriol, tri Examples thereof include ethylol ethyne, diglycerin, dextrose, sucrose, bisphenol A, ethylenediamine, and modified substances thereof. These can be used individually or in mixture, respectively. In addition, the alkylene oxide may include ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, styrene oxide and the like.

The polyol component usable in the present invention preferably has an average molecular weight in the range of 200 to 8,000, preferably in the range of 1,000 to 5,000, in view of maintaining a moderate viscosity and improving workability and maintaining the strength of the polyurethane foam.

In addition, the polyol component includes 40 to 80% by weight of a polyester-based polyol having 2 functional groups, an average molecular weight of 1,000 to 5,000, and 20 to 60% by weight of a polyester polyol having a functional group of 3 and an average molecular weight of 1,000 to 5,000. It is preferable to mix and use a polyol component, in terms of viscosity control during operation and the desired foam molding to have good physical properties.

As isocyanate compounds used in the production of the polyurethane foam of the present invention, aromatic, alicyclic, aliphatic polyisocyanates having two or more isocyanate groups (NCO), mixtures thereof, modified polyisocyanates obtained by modifying them, etc. Can be used. Specific examples include diphenyl methane diisocyanate, ethylene diisocyanate, toluene diisocyanate, tolylene diisocyanate, methylene diphenyl diisocyanate, tetramethyl xylene diisocyanate, naphthalene diisocyanate, xylene diisocyanate, polymethylene polyphenyl isocyanate, hydrogenated methylene di And phenyl diisocyanate, hydrogenated tolylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, lysine diisocyanate and mixtures thereof and modified substances thereof.

Examples of the modified product include prepolymer-type modified products, reaction product modified from a polyisocyanate and a polyol, nurate modified products, urea modified products, carbodiimide modified products, arophanate modified products, and biuret modified products.

The isocyanate component has a molecular weight in the range of 300 to 500, 30 to 70% by weight of a polymeric methylene diphenyl diisocyanate having an isocyanate content of 25 to 50% and a modified methylene diphenyl diisocyanate having an isocyanate content of 25 to 50% by 70 to It is preferable to mix and use the isocyanate containing 30 weight%.

In an embodiment of the present invention, in order to increase elongation and tensile strength, a diol silicone compound is introduced to react with a polyisocyanate to form a polyurethane bond. Hybrid polymers are obtained in which silicone and urethane are bonded simultaneously in the same molecular chain while forming a polyurethane bond. Here, a hybrid polymer foam is obtained using water or gas as a blowing agent. Such silicone diol compounds are to be used in combination with existing polyester polyols or polyether polyols.

Silicone diol compounds usable for the production of the hybrid polyurethane foam of the present invention can be broadly divided into two.

The first is a branched silicone diol compound, which is characterized by giving the properties of the hybrid polymers produced very much like polyurethane polymers or greatly improving the surface smoothness. The following compound A can be mentioned.

<Compound A>

Compound A has a molecular weight of about 5,000 g / mol, a density at 25 ° C. of about 0.97 and a viscosity at 25 ° C. of about 120 mm ² / S. In the said compound A, n represents the integer of 50-70 range.

The second is a straight silicone diol compound, which allows the hybrid polymer to be produced to have significantly improved elongation and soften the properties of the polymer as a whole. The following compounds B and C are exemplified.

<Compound B>

Compound B has a molecular weight of about 6,600 g / mol, a melting point of about 54 ℃, a hydroxyl value of about 15.5 ~ 18.5 mg / KOH / g, the acid value is about 2 mg / KOH / g. In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.

<Compound C>

Compound C has a molecular weight of about 2,500 g / mol, a viscosity at 25 ° C. of about 75 to 105 mpas, a density at 25 ° C. of about 0.94 to 0.98 g / ml, and a hydroxyl value of about 40 to 50 mg / KOH. / g, the acid value is about 0.5 mg / KOH / g. In said compound C, m represents the integer of the range 4-9, n represents the integer of the range 25-35.

The silicon diol compound is used with a polyol, the amount of which is used to be in the range of 3 to 30% by weight based on the polyol compound. If its amount is less than 3% by weight, it is not preferable because of its elasticity, softness and elongation, and if its amount is more than 30% by weight, its reactivity is slowed, which is a problem in curing during the manufacture of the polyurethane foam sheet, which is undesirable. Because.

As a blowing agent used for manufacture of the polyurethane foam of this invention, water, the gas containing nitrogen, etc. are mentioned.

On the other hand, as the catalyst used in the production of the polyurethane foam of the present invention, a number of catalysts generally used can be used without exception. Bismuth, tin, iron, antimony, uranium, cadmium, cobalt, aluminum, zinc, nickel, copper, manganese, zirconium organic acid salts or inorganic acid salts, organometallic derivatives, phosphines, organic amines, and the like can be used. Specific examples thereof include dibutyltin dilaurate, cobalt naphthenate, triethylamine, N, N-diethylethanolamine, tetramethylammonium formate, tetramethylammonium acetate, and the like. Such a catalyst is preferably used in the range of 0.1 to 5% by weight based on the total amount of the composition.

Surfactants may be used as the foam stabilizer used in the production of the polyurethane foam of the present invention. This serves to maintain the molded state of the urethane foam well. Surfactants include silicone-based surfactants having polydimethylsiloxane and polyoxyalkylene chains, anionic surfactants such as fatty acid salts, sulfuric acid ester salts, phosphoric acid ester salts, sulfonate salts and the like. The surfactant is used 0.1 to 10 parts by weight based on 100 parts by weight of the polyol component.

 Fillers used in the production of the polyurethane foams of the present invention include particulate fillers, layered fillers, fibrous fillers and the like. Specifically, particulate fillers such as calcium carbonate, barium sulfate, silica, clay, talc, aluminum hydroxide, melamine; Layered fillers such as mica, willlastonite and aluminum flakes; And fibrous fillers such as various glass fibers, carbon fibers, alumina fibers and potassium titanate. The filler increases the hardness of the foam, improves thermal stability, improves elastic modulus, and is effective for energy absorption.

In order to impart color in the production of the polyurethane foam of the present invention, colored pigments or dyes such as titanium dioxide, iron oxide, and carbol black may be used.

In addition to these, additives such as antioxidants, ozone inhibitors, UV stabilizers, conductive polymers, and the like may also be used.

Hereinafter, a method of manufacturing a hybrid polyurethane foam according to an embodiment of the present invention will be described.

First, a polyol component, a silicon diol, a catalyst, a filler, a pigment, and the like are mixed and stirred to prepare a polyol mixed solution. Here, the isocyanate compound prepared separately is mixed and agitated while being supplied at a constant rate using a metering pump, and the nitrogen gas is supplied while adjusting density and hardness to foam. More specifically, the polyol solution is mixed and stirred using a tank or the like and the temperature is adjusted to about 20 to 45 ° C. Thereafter, using a foaming machine such as an automatic mixing injection foaming machine or an automatic mixing injection foaming machine, the isocyanate compound and air and / or an inert gas are forced to foam.

Next, the obtained molded body is heat treated at a temperature of 60 ~ 200 ℃ to improve the tensile strength and tear strength of the molded body and to further improve the compression characteristics. And the middle addition effectively promotes the reaction and promotes the high molecular weight of the polyurethane foam. The heat treatment temperature is 60 to 200 占 폚, preferably 80 to 180 占 폚, more preferably 120 to 150 占 폚 from the viewpoint of preventing the molded body from thermal deformation.

According to one embodiment of the present invention, the surface of the foam sheet is coated with a urethane resin, an acrylic resin, an ultraviolet curable resin, etc. in order to control the surface properties such as softening the surface after the polyurethane foam is prepared and completely cured. can do.

In particular, it is designed to use a relatively high molecular weight polyol to soften the polyurethane foam composed of a combination of polyol and isocyanate, or to make the mole ratio of polyol slightly higher than isocyanate to slow the elastic recovery rate by controlling the molar ratio of polyol and isocyanate. There is a case. At this time, the characteristics of the foam is excellent, but the surface may be sticky. In order to improve this, the top of the polyurethane foam layer can be surface treated.

Coating the resin may be UV curing method, thermosetting method and the like depending on the curing method. The UV curing method includes a urethane-based acrylic resin such as phenylglycidyl ether acrylate, and the thermosetting method uses an aqueous or oily general urethane or acrylic resin.

Hereinafter, the present invention will be described in detail through specific examples.

&Lt; Example 1 >

The polyol was added to a 1000 L capacity mixing tank made of stainless steel equipped with a stirring device (dissol bar) capable of high speed stirring up to 2000 rpm, and stirred uniformly at room temperature. The silicon diol compound was added thereto and dispersed well. A foam stabilizer, a pigment, a catalyst, a filler, and the like were added and stirred at a high speed for about 1 hour or more. A homogeneous liquid mixture A was prepared. At this time, the influx of water inhibited the urethane reaction, so that it was suppressed as much as possible.

Next, the polyisocyanate liquid was prepared separately and it was set as reaction liquid B. Mixing liquid A and reaction liquid B were supplied to a high speed mixing head, which is a device capable of uniformly mixing three components at high speed, at a constant rate using a metering pump, while simultaneously supplying nitrogen gas. Nitrogen gas was supplied while adjusting density and hardness. The three components were mixed uniformly and coated to a uniform thickness on the polyester film. After curing at a high temperature in the range of about 120 ~ 150 ℃ in the reaction curing machine to prepare a flame-retardant polyurethane foam sheet. Flame retardancy measurements were performed.

<Examples 2-6>

Performed in the same manner as in Example 1, but changed the composition and content of the mixture A as shown in Table 1 to prepare a polyurethane foam sheet, it was measured for flame retardancy.

&Lt; Comparative Example 1 &

In the same manner as in Example 1 except that the composition and content of the mixed solution A and the composition and content of the mixed solution B were changed as shown in Table 1 to prepare a polyurethane foam sheet, and the flame retardancy was measured.

Raw materials used in the above Examples and Comparative Examples are summarized in Table 1 below.

TABLE 1

In Table 1, reactive silicone (A) represents Compound A, reactive silicone (B) represents Compound B, and reactive silicone (C) represents Compound C. Table 2 below summarizes the types and amounts (parts by weight) of the raw materials used in the Examples and Comparative Examples.

<Table 2>

Table 3 shows the data on the flame retardant effect of the polyurethane foam according to each Example and Comparative Example.

The polyester film used for coating a polyurethane foam is made into a general polyester film of 50-100 micrometers in the case of peeling type, and a flame-retardant flame-retardant polyester film may be used when manufacturing a film integral polyurethane foam sheet. In this embodiment, a peeling type general film was used to implement the characteristics of the polyurethane foam sheet and confirm the effect thereof, and then, after peeling off the film, the characteristics of the polyurethane foam sheet were measured.

The specimens used for elongation and tensile strength measurements were 2.0 mm thick, 0.34 g / cm ^{3 in} density, and 56 in hardness.

First, elongation and tensile strength were obtained according to ASTM3574. Measurements were made using 6NU-100, a universal testing machine (UTM) from Ghana. The specimen size was 30mm x 70mm x2.0mm, and the average of the five specimens was measured. The tensile speed was 100 mm / min.

Elongation of the specimen was fixed and tensioned in the universal testing machine, and the average value was calculated by measuring five times the maximum length of the specimen. Elongation (%) = (Maximum length of specimen averaged-length of first specimen) / original specimen length x 100.

Tensile strength was calculated by measuring the force five times until the specimen was fixed to the universal testing machine and the specimen was stretched to the maximum. The unit is kgf / m ² .

Density was obtained according to ASTM3574. Thickness and weight were measured to obtain density. The thickness was measured using a Mitutoyo (Japan) measuring instrument with a minimum measurement unit of 0.01 mm, and the weight was measured using a shimadzu (Japan) microscopic precision balance with a minimum measurement unit of 0.01 g.

A sample of 100 mm (width) x 100 mm (length) size was prepared, and the thickness (cm) was measured and averaged at nine points from the left, middle, right and right centers of each of four sides of the sample using a thickness meter. . The weight in grams was then measured using a micro precision balance. The weight of the sample was divided by the volume of the sample to obtain a density value. At this time, the density of the pure polyurethane foam except for the polyester film was obtained in units of g / cm ³ .

Hardness was obtained according to ASTM2240. Using a Teclock (Japan) measuring instrument, hardness was measured and averaged at a total of nine points from the left, middle, right and right center of each of four sides of a sample of 100 mm (width) x 100 mm (length) size.

<Table 3>

Through the results shown in Table 3 it can be seen that the hybrid polyurethane foam prepared according to Examples 1 to 6 containing the silicone compound exhibits excellent elongation and tensile strength.

The hybrid polyurethane foam as described above is obtained by adding a blowing agent while instantaneously reacting a mixed solution containing a silicone diol and a polyol with a polyisocyanate at a predetermined ratio to allow a curing reaction to occur within a rapid time of about 2 to 3 minutes. Do not need. In particular, the hybrid polyurethane foam produced can be easily used as an insole material for shoes as a raw material with improved tensile strength and elongation.

In addition, the high surface smoothness makes the gasket or sealing function almost perfect. Surface smoothness is also high, but when applied to products such as mobile phones and LCD modules, the higher the surface smoothness, the more uniform the physical properties such as compression, compressive force, restoring force, and shock absorbing force. Becomes higher.

Polyurethane foam according to an embodiment of the present invention can be usefully used for electronic devices, such as computers, communications, sports, medical, automotive cushions, shoes manufacturing.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

Claims (10)

A hybrid polyurethane foam comprising at least one silicone diol compound selected from the group consisting of Compound A, Compound B and Compound C,
The hybrid polyurethane foam is
Preparing a polyol mixture by mixing at least one polyol among polyester polyols and polyether polyols, at least one silicon diol and a catalyst selected from the group consisting of Compound A, Compound B and Compound C;
Preparing a polyisocyanate reaction solution; And
Hybrid polyurethane foam, characterized in that formed by performing the step of reacting by mixing the polyol mixture, the polyisocyanate reaction solution and the blowing agent.
<Compound A>

(In the compound A, n represents an integer ranging from 50 to 70.)
<Compound B>

(In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.)
<Compound C>

(In the compound C, m represents an integer ranging from 4 to 9, n represents an integer ranging from 25 to 35.) The polyurethane foam according to claim 1, wherein the hybrid polyurethane foam has an elongation (%) of 120 or more and a tensile strength (kgf / cm ² ) of 3 or more. The polyurethane foam of claim 1, wherein the silicone diol compound forms a urethane bond through reaction with an isocyanate. Preparing a polyol mixture by mixing at least one polyol among polyester polyols and polyether polyols, at least one silicon diol and a catalyst selected from the group consisting of Compound A, Compound B and Compound C;
Preparing a polyisocyanate reaction solution; And
Method of producing a hybrid polyurethane foam comprising the step of mixing and reacting the polyol mixture, the polyisocyanate reaction solution and the blowing agent.
<Compound A>

(In the compound A, n represents an integer ranging from 50 to 70.)
<Compound B>

(In the compound B, R represents an alkyl group having 2 to 3 carbon atoms, m represents an integer ranging from 20 to 25, and n represents an integer ranging from 15 to 20.)
<Compound C>

(In the compound C, m represents an integer ranging from 4 to 9, n represents an integer ranging from 25 to 35.) The method of claim 4, wherein the polyol mixture further comprises at least one of a surfactant, a filler and a pigment. According to claim 4, After the step of the reaction, a method for producing a polyurethane foam, characterized in that further performing the step of heating to a temperature 120 ~ 150 ℃. The method of claim 4, wherein the blowing agent is any one of a gas containing water or nitrogen. The method of claim 4, wherein the amount of the silicone diol compound is in the range of 3 to 30% by weight of the polyol compound. The method of claim 4, wherein the step of reacting is carried out within 2 to 5 minutes. delete