WO2016047767A1 - 難燃性ウレタン樹脂組成物 - Google Patents
難燃性ウレタン樹脂組成物 Download PDFInfo
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- WO2016047767A1 WO2016047767A1 PCT/JP2015/077160 JP2015077160W WO2016047767A1 WO 2016047767 A1 WO2016047767 A1 WO 2016047767A1 JP 2015077160 W JP2015077160 W JP 2015077160W WO 2016047767 A1 WO2016047767 A1 WO 2016047767A1
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/016—Flame-proofing or flame-retarding additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Definitions
- Concrete reinforced with reinforcing bars or the like is used as a structural material to enhance the strength of buildings, such as condominiums, detached houses, various facilities of schools, and outer walls of commercial buildings.
- a rigid polyurethane foam having flame resistance against fire is used as a heat insulating layer.
- Patent Document 1 includes a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer and an additive
- the trimerization catalyst is a nitrogen-containing aromatic compound, a carboxylic acid alkali metal salt, a tertiary ammonium salt, and It is at least one selected from the group consisting of quaternary ammonium salts
- the additive contains red phosphorus as an essential component, and in addition to red phosphorus, phosphate ester, phosphate-containing flame retardant, bromine-containing flame retardant, boron-containing flame retardant It describes a flame retardant urethane resin composition comprising a combination of at least one selected from the group consisting of an antimony-containing flame retardant and a metal hydroxide.
- the flame retardant urethane resin composition of Patent Document 1 described above is flame retardant and shape retention by a heat generation test of a molded body comprising a flame retardant urethane resin composition cut to 10 cm in length ⁇ 10 cm in width ⁇ 5 cm in thickness. It has been shown to be excellent.
- the thickness of the molded body is made thinner, heat easily passes through, so the shrinkage and deformation of the molded body in the exothermic test, especially deformation in the thickness direction, are large, and the molded body is used for applications such as spraying and heat insulation panels. There was a problem that sufficient shape retention could not be secured for fire prevention.
- An object of the present invention is to provide a flame retardant urethane resin composition which can exhibit high flame retardancy and has excellent shape retention during heating even when it is thin.
- the following flame retardant urethane resin composition is provided.
- a flame retardant urethane resin composition comprising a polyisocyanate compound, a polyol compound, a trimerization catalyst, a foaming agent, a foam stabilizer, an additive, and a filler, wherein the additive comprises red phosphorus, and the aspect ratio of the filler 5 to 50, an average particle size of 0.1 to 15 ⁇ m, and a melting point of 750 ° C. or higher.
- Item 2 The flame retardant urethane resin composition according to Item 1, wherein the filler has a weight loss rate of 5% or less in TG / DTA measurement under air conditions.
- Item 3 The flame retardant urethane resin composition according to Item 1 or 2, wherein the filler is a needle-like inorganic filler.
- Item 4. The item according to any one of Items 1 to 3, wherein the red phosphorus is 3.5 to 30 parts by weight and the filler is 3 to 30 parts by weight based on 100 parts by weight of the urethane resin comprising the polyisocyanate compound and the polyol compound.
- Item 5. A molded article comprising the flame retardant urethane resin composition according to any one of Items 1 to 4.
- Item 6 When the molded body of 100 mm ⁇ 100 mm ⁇ 20 mm is heated at a radiant heat intensity of 50 kW / m 2 for 20 minutes in accordance with the ISO-5660 test method, dimensions in the length direction and width direction of the molded body after heating with respect to before heating Item 6.
- a molded article made of a flame retardant urethane resin composition which is thin but excellent in shape retention during heating.
- Urethane resin consists of a polyisocyanate compound as a main agent and a polyol compound as a curing agent.
- polyisocyanate compound examples include aromatic polyisocyanate, alicyclic polyisocyanate, and aliphatic polyisocyanate.
- aromatic polyisocyanate examples include phenylene diisocyanate, tolylene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate, dimethyldiphenylmethane diisocyanate, triphenylmethane triisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and the like.
- alicyclic polyisocyanate examples include cyclohexylene diisocyanate, methylcyclohexylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, and dimethyldicyclohexylmethane diisocyanate.
- aliphatic polyisocyanate examples include methylene diisocyanate, ethylene diisocyanate, propylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, and the like.
- the polyisocyanate compound can be used alone or in combination of two or more.
- the main component of the urethane resin is preferably diphenylmethane diisocyanate for reasons such as ease of use and availability.
- polyol compound that is a curing agent for the urethane resin examples include polylactone polyol, polycarbonate polyol, aromatic polyol, alicyclic polyol, aliphatic polyol, polyester polyol, polymer polyol, and polyether polyol.
- polylactone polyol examples include polypropiolactone glycol, polycaprolactone glycol, and polyvalerolactone glycol.
- polycarbonate polyol examples include a polyol obtained by a dealcoholization reaction of a hydroxyl group-containing compound such as ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, octanediol, and nonanediol with diethylene carbonate, dipropylene carbonate, and the like. Etc.
- aromatic polyols examples include bisphenol A, bisphenol F, phenol novolac, and cresol novolac.
- Examples of the alicyclic polyol include cyclohexanediol, methylcyclohexanediol, isophoronediol, dicyclohexylmethanediol, dimethyldicyclohexylmethanediol, and the like.
- Examples of the aliphatic polyol include ethylene glycol, propylene glycol, butanediol, pentanediol, and hexanediol.
- polyester polyol examples include a polymer obtained by dehydration condensation of a polybasic acid and a polyhydric alcohol, a polymer obtained by ring-opening polymerization of a lactone such as ⁇ -caprolactone, ⁇ -methyl- ⁇ -caprolactone, Examples thereof include condensates of hydroxycarboxylic acid and the above polyhydric alcohol.
- polybasic acid examples include adipic acid, azelaic acid, sebacic acid, terephthalic acid, isophthalic acid, and succinic acid.
- polyhydric alcohol examples include bisphenol A, ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, diethylene glycol, 1,6-hexane glycol, neopentyl glycol, and the like.
- hydroxycarboxylic acid examples include castor oil, a reaction product of castor oil and ethylene glycol, and the like.
- polymer polyol examples include a polymer obtained by graft polymerization of an ethylenically unsaturated compound such as acrylonitrile, styrene, methyl acrylate, and methacrylate on an aromatic polyol, alicyclic polyol, aliphatic polyol, polyester polyol, or the like, polybutadiene Examples thereof include polyols, modified polyols of polyhydric alcohols, and hydrogenated products thereof.
- modified polyol of a polyhydric alcohol examples include those obtained by reacting a raw material polyhydric alcohol with an alkylene oxide.
- polyhydric alcohol examples include trihydric alcohols such as glycerin and trimethylolpropane; pentaerythritol, sorbitol, mannitol, sorbitan, diglycerin, dipentaerythritol, etc., sucrose, glucose, mannose, fructose, methylglucoside and Tetravalent to octavalent alcohols such as derivatives thereof; phenol, phloroglucin, cresol, pyrogallol, catechol, hydroquinone, bisphenol A, bisphenol F, bisphenol S, 1-hydroxynaphthalene, 1,3,6,8-tetrahydroxynaphthalene , Anthrol, 1,4,5,8-tetrahydroxyanthracene, 1-hydroxypyrene and other phenol polybutadiene polyols; castor oil polyol; hydroxyalkyl (meth) Polyfunctional (e.g. functionality 2-100) polyols such as (co) polymers and poly
- the method for modifying the polyhydric alcohol is not particularly limited, but a method of adding alkylene oxide (hereinafter abbreviated as AO) is preferably used.
- AO alkylene oxide
- AO includes 2 to 6 carbon atoms such as ethylene oxide (hereinafter abbreviated as EO), 1,2-propylene oxide (hereinafter abbreviated as PO), 1,3-propyloxide, 1,2- Examples include butylene oxide and 1,4-butylene oxide.
- EO ethylene oxide
- PO 1,2-propylene oxide
- PO 1,3-propyloxide
- 1,2- Examples include butylene oxide and 1,4-butylene oxide.
- PO, EO, and 1,2-butylene oxide are preferable from the viewpoint of properties and reactivity, and PO and EO are more preferable.
- two or more types of AO for example, PO and EO
- block addition or random addition may be used, or a combination thereof may be used.
- polyether polyol for example, in the presence of at least one low molecular weight active hydrogen compound having two or more active hydrogens, at least one alkylene oxide such as ethylene oxide, propylene oxide, and tetrahydrofuran is subjected to ring-opening polymerization.
- alkylene oxide such as ethylene oxide, propylene oxide, and tetrahydrofuran
- Examples of the low molecular weight active hydrogen compound having two or more active hydrogens include diols such as bisphenol A, ethylene glycol, propylene glycol, butylene glycol, and 1,6-hexanediol, and triols such as glycerin and trimethylolpropane. And amines such as ethylenediamine and butylenediamine.
- the polyol used in the present invention is preferably a polyester polyol or a polyether polyol because the effect of reducing the total calorific value upon combustion is great.
- polyester polyol having a molecular weight of 200 to 800 it is more preferable to use a polyester polyol having a molecular weight of 300 to 500.
- the isocyanate index is a percentage of the equivalent ratio of the isocyanate group of the polyisocyanate compound to the hydroxyl group of the polyol compound. When the value exceeds 100, the isocyanate group is in excess of the hydroxyl group. .
- the range of the isocyanate index of the urethane resin used in the present invention is preferably in the range of 250 to 1000, more preferably in the range of 250 to 800, and even more preferably in the range of 300 to 700.
- the isocyanate index (INDEX) is calculated by the following method.
- the unit of the number of parts used is weight (g), the molecular weight of the NCO group is 42, and the NCO content is the percentage of the NCO group in the polyisocyanate compound expressed by mass%.
- the molecular weight of KOH is 56100
- the molecular weight of water is 18, and the number of OH groups in water is 2.
- the flame retardant urethane resin composition contains a catalyst, a foaming agent, a foam stabilizer, an additive and a filler.
- the catalyst examples include triethylamine, N-methylmorpholine bis (2-dimethylaminoethyl) ether, N, N, N ′, N ′′, N ′′ -pentamethyldiethylenetriamine, N, N, N′-trimethylaminoethyl- Nitrogen atom-containing catalysts such as ethanolamine, bis (2-dimethylaminoethyl) ether, N-methyl, N'-dimethylaminoethylpiperazine, imidazole compounds in which the secondary amine functional group in the imidazole ring is substituted with a cyanoethyl group, etc. Is mentioned.
- the addition amount of the catalyst used in the flame-retardant urethane resin composition is preferably in the range of 0.6 to 10 parts by weight, and 0.6 to 8 parts by weight with respect to 100 parts by weight of the urethane resin. Is more preferably in the range of 0.6 to 6 parts by weight, and most preferably in the range of 0.6 to 3.0 parts by weight.
- Preferred catalysts include a trimerization catalyst that causes the isocyanate group contained in the polyisocyanate compound, which is the main component of the polyurethane resin, to react and trimerize to promote the formation of an isocyanurate ring.
- the trimerization catalyst promotes the formation of an isocyanurate ring by reacting the isocyanate group contained in the polyisocyanate compound, which is the main component of the polyurethane resin, to cause trimerization.
- Trimerization catalysts include nitrogen-containing aromatic compounds such as tris (dimethylaminomethyl) phenol, 2,4-bis (dimethylaminomethyl) phenol, 2,4,6-tris (dialkylaminoalkyl) hexahydro-S-triazine Potassium acetate, potassium 2-ethylhexanoate, alkali metal carboxylate; tertiary ammonium salts such as trimethylammonium salt, triethylammonium salt, triphenylammonium salt; tetramethylammonium salt, tetraethylammonium salt, tetraphenylammonium salt, etc. A quaternary ammonium salt etc. are mentioned.
- the addition amount of the trimerization catalyst used in the flame retardant urethane resin composition is preferably in the range of 0.6 to 10 parts by weight with respect to 100 parts by weight of the urethane resin, and 0.6 to 8 parts by weight. More preferably, it is in the range of parts by weight, more preferably in the range of 0.6 parts by weight to 6 parts by weight, and most preferably in the range of 0.6 parts by weight to 3.0 parts by weight. In the case of 0.6 parts by weight or more, there is no problem that the trimerization of isocyanate is inhibited, and in the case of 10 parts by weight or less, an appropriate foaming rate can be maintained and the handling is easy.
- the foaming agent used in the flame retardant urethane resin composition promotes foaming of the urethane resin.
- blowing agent examples include, for example, water; hydrocarbons having a low boiling point such as propane, butane, pentane, hexane, heptane, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane; dichloroethane, propyl chloride, isopropyl chloride, Chlorinated aliphatic hydrocarbon compounds such as butyl chloride, isobutyl chloride, pentyl chloride and isopentyl chloride; Fluorine compounds such as CHF 3 , CH 2 F 2 and CH 3 F; Trichloromonofluoromethane, trichlorotrifluoroethane, dichloromono Hydrochlorofluorocar, such as fluoroethane, (for example, HCFC141b (1,1-dichloro-1-fluoroethane), HCFC22 (chlorodifluorome
- the range of the foaming agent is preferably in the range of 0.1 to 30 parts by weight with respect to 100 parts by weight of the urethane resin.
- the foaming agent is more preferably in the range of 0.1 to 18 parts by weight, still more preferably in the range of 0.5 to 18 parts by weight with respect to 100 parts by weight of the urethane resin.
- the most preferred range is 5 to 10 parts by weight.
- the range of the foaming agent is 0.1 parts by weight or more, the formation of bubbles is promoted and a good foam is obtained.
- the range is 30 parts by weight or less, the vaporization power is increased and the bubbles are prevented from becoming coarse. Can do.
- foam stabilizer used in the flame-retardant urethane resin composition examples include surfactants such as polyoxyalkylene foam stabilizers such as polyoxyalkylene alkyl ether, silicone foam stabilizers such as organopolysiloxane, and the like. .
- the amount of the foam stabilizer used for the urethane resin cured by the chemical reaction is appropriately set depending on the urethane resin cured by the chemical reaction used. For example, for 100 parts by weight of the urethane resin, A range of 0.1 to 10 parts by weight is preferable.
- Catalyst, foaming agent and foam stabilizer can be used alone or in combination of two or more.
- the additive contains red phosphorus as an essential component.
- the additive includes red phosphorus and a phosphate ester.
- the addition amount of the additive used in the present invention is preferably in the range of 6 to 70 parts by weight with respect to 100 parts by weight of the urethane resin, and the total amount of additives other than the urethane resin is preferably in the range of 6 to 70 parts by weight. More preferably, it is in the range of 40 parts by weight, more preferably in the range of 6 to 30 parts by weight, and most preferably in the range of 6 to 20 parts by weight.
- the compact made of the flame retardant urethane resin composition can be prevented from cracking the dense residue formed by the heat of fire, and when it is 70 parts by weight or less, it is difficult. Foaming of the flammable urethane resin composition is not inhibited.
- the red phosphorus used in the present invention is not limited, and a commercially available product can be appropriately selected and used.
- the amount of red phosphorus added to the refractory urethane resin composition according to the present invention is preferably in the range of usually 3.5 to 30 parts by weight with respect to 100 parts by weight of the urethane resin.
- a range of 20 parts by weight is more preferable, and a range of 6.0 to 18 parts by weight is more preferable.
- the range of red phosphorus is 3.5 parts by weight or more, the self-extinguishing property of the flame retardant urethane resin composition is maintained, and when it is 20 parts by weight or less, foaming of the flame retardant urethane resin composition is inhibited. Not.
- red phosphorus is 2 to 18% by weight with respect to the weight of the flame retardant urethane resin composition.
- the phosphate ester used in the present invention is not particularly limited, but it is preferable to use a monophosphate ester, a condensed phosphate ester, or the like.
- the monophosphate is not particularly limited, and examples thereof include trimethyl phosphate, triethyl phosphate, tributyl phosphate, tri (2-ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylyl phosphate, Tris (isopropylphenyl) phosphate, tris (phenylphenyl) phosphate, trinaphthyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate, diphenyl (2-ethylhexyl) phosphate, di (isopropylphenyl) phenyl phosphate, monoisodecyl phosphate, 2-acryloyloxyethyl acid phosphate, 2-methacryloyloxyethyl acid phosphate, Diphenyl-2-acryloyloxye
- the condensed phosphate ester is not particularly limited, and examples thereof include trialkyl polyphosphate, resorcinol polyphenyl phosphate, resorcinol poly (di-2,6-xylyl) phosphate (trade name PX-200, manufactured by Daihachi Chemical Industry Co., Ltd.). ), Hydroquinone poly (2,6-xylyl) phosphate, and condensed phosphates such as condensates thereof.
- condensed phosphate esters examples include resorcinol polyphenyl phosphate (trade name CR-733S), bisphenol A polycresyl phosphate (trade name CR-741), aromatic condensed phosphate ester (trade name CR747), and resorcinol.
- examples thereof include polyphenyl phosphate (trade name ADK STAB PFR, manufactured by ADEKA), and bisphenol A polycresyl phosphate (trade names FP-600 and FP-700).
- a monophosphate ester because it is highly effective in reducing the viscosity of the composition before curing and in reducing the initial calorific value, and it is preferable to use tris ( ⁇ -chloropropyl) phosphate. Is more preferable.
- ⁇ Phosphate ester can be used alone or in combination of two or more.
- the addition amount of the phosphate ester is preferably in the range of 2.5 to 50 parts by weight, more preferably in the range of 2.5 to 40 parts by weight with respect to 100 parts by weight of the urethane resin.
- the range is preferably from 2.5 parts by weight to 30 parts by weight.
- the range of the phosphate ester is 2.5 parts by weight or more, the self-extinguishing property is maintained, and when it is 50 parts by weight or less, the foaming of the flame retardant urethane resin composition is not inhibited.
- additives other than red phosphorus and phosphate esters may be further added.
- One additive may be added.
- shrinkage refers to changes in length including length in the length direction, length in the width direction, and length in the thickness direction
- deformation refers to a shape such as warpage. It refers to a change, particularly a change in shape in the thickness direction.
- the filler may be an organic filler or an inorganic filler, but is preferably an inorganic filler.
- the filler has an aspect ratio of 5 to 50, preferably 8 to 40, more preferably 10 to 40, still more preferably 10 to 35, and most preferably 8 to 25.
- the aspect ratio of the filler in the present specification is the minimum thickness of the maximum length of the filler confirmed in an image obtained by observing the filler with a scanning electron microscope (perpendicular to the maximum length). ) (Also referred to as a diameter / thickness ratio), a sufficient number of fillers, an average of 250 or more.
- the average particle size of the filler is 0.1 ⁇ m or more and less than 15 ⁇ m, preferably 0.1 ⁇ m or more and 14 ⁇ m or less, more preferably 0.3 to 10 ⁇ m.
- the average particle size is determined by an X-ray transmission type sedimentation method particle size distribution analyzer.
- the melting point of the filler is 750 ° C. or higher, preferably 800 ° C. or higher, more preferably 1,000 ° C. or higher.
- the shape of the filler may be either a needle-like filler or a plate-like filler as long as the above aspect ratio, average particle diameter, and melting point are satisfied, but the filler is preferably a needle-like filler.
- the needle shape means that the major axis is three times or more the minor axis, and includes not only the so-called needle shape but also the spindle shape and the cylindrical shape.
- the plate shape includes not only a so-called plate shape but also a scale shape, a flake shape, and the like.
- needle-like inorganic filler basic magnesium sulfate, aluminum borate, wollastonite, zonolite, dosonite, elastadite, boehmite, rod-like hydroxyapatite, potassium titanate whisker, aluminum borate whisker, magnesium-based whisker, Silicon-based whisker, acicular alumina, acicular ceramic, asbestos, acicular calcium carbonate, gypsum fiber, glass fiber, asbestos fiber, silica fiber, alumina fiber, silica / alumina fiber, zirconia fiber, carbon fiber (fiber such as carbon nanotube) , Needle-like or spherical new carbon such as fullerene), graphite fiber, boron nitride fiber, boron fiber, metal fiber and the like.
- Plate-like inorganic fillers are flaky graphite, talc, mica such as muscovite and phlogopite, sericite, kaolinite, chlorite, montmorillonite, halosite, etc.
- examples include clay minerals, plate-like calcium carbonate, plate-like aluminum hydroxide, glass flakes, plate-like iron oxide, and metal plate-like materials.
- the filler is an acicular inorganic filler having an aspect ratio of 5 to 50 and an average particle size of 0.1 ⁇ m or more and less than 15 ⁇ m.
- Preferred fillers are wollastonite or potassium titanate whiskers.
- the amount of filler added is preferably in the range of 3 to 30 parts by weight, more preferably in the range of 3 to 25 parts by weight, with respect to 100 parts by weight of the urethane resin. More preferably, it is in the range of parts. In one embodiment, 3 to 30 parts by weight of filler for 6 to 80 parts by weight of additive, preferably 3 to 25 parts by weight of filler for 6 to 60 parts by weight of additive, more preferably 8.
- the filler is 3 to 18 parts by weight with respect to 5 to 48 parts by weight.
- the flame retardant urethane resin composition of the present invention can be used in combination with one or more inorganic fillers in addition to the filler.
- the flame retardant urethane resin composition is within a range that does not impair the object of the present invention, as necessary, such as phenol-based, amine-based, sulfur-based antioxidants, heat stabilizers, metal harm-preventing agents, charging agents.
- An inhibitor, a stabilizer, a crosslinking agent, a lubricant, a softener, a pigment, an auxiliary component such as a tackifier resin, and a tackifier such as polybutene and a petroleum resin can be included.
- the flame retardant urethane resin composition reacts and cures, its viscosity changes over time. Therefore, before using the flame retardant urethane resin composition, the flame retardant urethane resin composition is divided into two or more to prevent the flame retardant urethane resin composition from reacting and curing. And when using a flame-retardant urethane resin composition, a flame-retardant urethane resin composition is obtained by putting together the flame-retardant urethane resin composition divided
- each component of the flame retardant urethane resin composition divided into two or more does not start to cure, and each of the flame retardant urethane resin composition
- Each component may be divided so that the curing reaction starts after the components are mixed.
- the flame retardant urethane resin composition comprises a trimerization catalyst in the range of 0.6 to 10 parts by weight based on 100 parts by weight of the urethane resin composed of the polyisocyanate compound and the polyol compound; 1 to 30 parts by weight of a foaming agent, 0.1 to 10 parts by weight of a foam stabilizer, and 6 to 80 parts by weight of an additive. 30 parts by weight and 3 to 30 parts by weight of filler.
- the method for producing the flame retardant urethane resin composition is not particularly limited.
- the flame retardant urethane resin composition can be obtained by a method such as melting the flame retardant urethane resin composition under heating.
- the flame retardant urethane resin composition is a known component such as a single screw extruder, a twin screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a laika machine, a planetary stirring machine, etc. It can be obtained by kneading using an apparatus.
- the urethane resin main component and the curing agent can be kneaded separately with a filler and the like, and kneaded with a static mixer, a dynamic mixer or the like immediately before injection.
- the components of the flame retardant urethane resin composition excluding the catalyst and the catalyst can be kneaded in the same manner immediately before injection.
- a flame-retardant urethane resin composition can be obtained by the method described above.
- the molded body made of the flame retardant urethane resin composition can be obtained as a foam by injecting the flame retardant urethane resin composition into a container such as a mold or a frame material and curing it.
- the molded object which consists of the said flame-retardant urethane resin composition can be obtained as a foam by spraying the said flame-retardant urethane resin composition on a to-be-coated structure, and making it harden
- the thickness of the molded product of the present invention is not particularly limited, but is, for example, 1 to 50 mm. Particularly in the case of 20 mm or more, the effect of suppressing deformation during the exothermic test is exhibited, which is advantageous.
- the molded body of the present invention is 100 mm ⁇ 100 mm ⁇ 20 mm (length direction ⁇ width direction ⁇ thickness direction), and is heated for 20 minutes at a radiant heat intensity of 50 kW / m 2 in accordance with ISO-5660 test method.
- the dimension in the length direction and the width direction of the molded body after heating with respect to before heating is larger than 95 mm, and the deformation in the thickness direction is less than 10 mm.
- the molded body made of the flame retardant urethane resin composition of the present invention preferably has a specific gravity in the range of 0.020-0.130 because it is easy to handle, and preferably in the range of 0.020-0.100. More preferably, it is in the range of 0.030-0.080, more preferably in the range of 0.030-0.060.
- the molded body comprising the flame retardant urethane resin composition of the present invention is preferably heated at a rate of 10 ° C./min from 30 ° C. to 900 ° C., and the measurement atmosphere is an air flow at a flow rate of 100 mL / min.
- the weight reduction rate (1-sample weight after heating / sample weight before heating) ⁇ 100 (%)) in the TG / DTA measurement under air conditions is 5% or less. For this reason, a molded object can hold
- the flame retardant urethane resin composition can be molded into a thin panel and placed on structures such as buildings, furniture, automobiles, trains, and ships.
- the foam layer which consists of a flame-retardant urethane resin composition can be formed in the surface of the said structure by spraying the said flame-retardant urethane resin composition on the said structure.
- a molded body made of a flame-retardant urethane resin composition is cut into a length of 100 mm, a width of 100 mm, and a thickness of 20 mm to prepare a sample for a corn calorimeter test.
- the total calorific value by the corn calorimeter test when heated at a radiant heat intensity of 50 kW / m 2 for 20 minutes can be measured according to the test method of ISO-5660.
- Example 1 Production of Foam Molded Body Consisting of Flame Retardant Urethane Resin Composition and Performance Evaluation Production of Foam Molded Body Composed of Flame Retardant Urethane Resin Composition
- Tables 1 and 2 flame retardant urethane resin compositions according to Examples 1 to 20 and Comparative Examples 1 to 14 were prepared. Details of each component in the table are as follows. 1.
- Polyol compound (A-1) p-phthalic polyester polyol (manufactured by Kawasaki Kasei Kogyo Co., Ltd., product name: Maximol RFK-505, hydroxyl value 250 mgKOH / g)
- Foam stabilizer Polyalkylene glycol foam stabilizer (manufactured by Toray Dow Corning, product name: SH-193) 4).
- the total calorific value of the corn calorimeter when heated for 20 minutes was 8 MJ / m 2 or less in all Examples 1-19, and the molded article of the present invention was excellent in flame retardancy.
- the total calorific value of the corn calorimeter when heated for 20 minutes exceeded 8 MJ / m 2 .
- shrinkage measurement The amount of shrinkage and the amount of deformation (mm) when heated in the above corn calorimeter test were measured. As shown in FIG. 1A, X indicates a length direction, Y indicates a width direction, and as shown in FIG. 1B, Z indicates a thickness direction.
- the test sample was measured at three points in the X direction and the Y direction, the Z direction was measured at the most contracted position, and the most contracted numerical values in both directions were adopted.
- the length of the molded body in the length direction and the width direction is larger than 95 mm, it passes, 95 mm or less is rejected, the deformation in the thickness direction is less than 10 mm, 10 mm or more is rejected, and X, Y, Z direction
- the case of passing in all directions was determined as ⁇ , and the case of failing in at least one of the X, Y, and Z directions was determined as ⁇ .
- Example 1-20 In the molded body of Example 1-20, the deformation amount was small, and the deformation suppressing effect was exhibited when the molded body was thin.
- Example 2 Evaluation of the effect of various fillers on the shrinkage of the foamed molded product Except that each filler used in Example 1 was changed to 3 parts by weight, 6 parts by weight, or 9 parts by weight with respect to 100 parts by weight of the urethane resin.
- a foam-molded article was produced with the same materials and composition as in Example 1. The particle size of each filler was determined with an X-ray transmission type sedimentation particle size distribution measuring device, and the aspect ratio was measured.
- Samples for test of 100 mm ⁇ 100 mm ⁇ 20 mm produced in the same manner as in Example 1 were subjected to a corn calorimeter test. Measure the amount of shrinkage after the combustion test, and if it is acceptable in all directions in the X, Y and Z directions, it will be judged as ⁇ , and if it will be rejected in at least one of the X, Y and Z directions, it will be judged as x. did.
- the filler sample was sampled at 10 mg, the temperature was raised from 30 ° C. to 900 ° C. at a rate of 10 ° C./min, the measurement atmosphere was an air flow of 100 mL / min, and the TG / DTA measuring device (TG / DTA7300 (manufactured by Hitachi High-Tech Science Co., Ltd.) was used to measure the weight, and the sample residual amount was measured as follows: sample weight after heating / sample weight before heating ⁇ 100 (%).
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Abstract
Description
本願は、2014年9月26日に出願した特願2014-197047号明細書の優先権の利益を主張するものであり、当該明細書はその全体が参照により本明細書中に援用される。
(技術分野)
本発明は、難燃性ウレタン樹脂組成物に関する。
ここで、
イソシアネートの当量数=ポリイソシアネートの使用部数×NCO含有率(%)÷100/NCOの分子量、
ポリオールの当量数=OHV×ポリオールの使用部数÷KOHの分子量、OHVはポリオールの水酸基価(mg KOH/g)、
水の当量数=水の使用部数×水のOH基の数/水の分子量
である。なお上記式において、使用部数の単位は重量(g)であり、NCO基の分子量は42、NCO含有率はポリイソシアネート化合物中のNCO基の割合を質量%で表したものであり、
上記式の単位換算の都合上KOHの分子量は56100とし、水の分子量は18、水のOH基の数は2とする。
1.難燃性ウレタン樹脂組成物からなる発泡成形体の製造
表1及び表2に示した配合により、実施例1~20及び比較例1~14に係る難燃性ウレタン樹脂組成物をそれぞれ準備した。表中の各成分の詳細は次の通りである。
1.ポリオール化合物
(A-1) p-フタル酸ポリエステルポリオール(川崎化成工業社製、製品名:マキシモールRFK-505、水酸基価=250mgKOH/g)
(A-2) p-フタル酸ポリエステルポリオール(川崎化成工業社製、製品名:マキシモールRLK-087、水酸基価=200mgKOH/g)
2.触媒
(B-1)三量化触媒(オクチル酸カリウム、モメンティブ・パフォーマンス・マテリアルズ社製、製品名:K-Zero G)
(B-2)三量化触媒(東ソー社製、製品名:TOYOCAT-TR20)
(B-3)ウレタン化触媒(ペンタメチルジエチレントリアミン、東ソー社製、製品名:TOYOCAT-DT)
(B-4)三量化触媒(東ソー社製、製品名:TOYOCAT-RX5)
(B-5)ウレタン化触媒(トリエチレンジアミン、東ソー社製、製品名:TEDA-L33)
(B-6)ウレタン化触媒(1,2-ジメチルイミダゾール、東ソー社製、製品名:TOYOCAT-DM70)
ポリアルキレングリコール系整泡剤(東レダウコーニング社製、製品名:SH-193)
4.発泡剤
(C-1)純水
(C-2)HFC HFC-365mfc(1,1,1,3,3-ペンタフルオロブタン、日本ソルベイ社製)およびHFC-245fa(1,1,1,3,3-ペンタフルオロプロパン、セントラル硝子社製)、混合比率 HFC-365mfc:HFC-245fa = 7:3、以下「HFC」という)
5.イソシアネート化合物 (以下、「ポリイソシアネート」という)
MDI(日本ポリウレタン工業社製、製品名:ミリオネートMR-200)粘度:167mPa・s、NCO含有量=32.1%
6.添加剤
(D-1)赤リン(燐化学工業社製、製品名:ノーバエクセル140)
(D-2)トリス(β-クロロプロピル)ホスフェート(大八化学社製、製品名:TMCPP、以下「TMCPP」という。)
(D-3)臭素含有難燃剤(マナック社製、製品名:HBB-b、以下「HBB」という。)
(D-4)リン酸二水素アンモニウム(太平化学産業社製)
(E-1)ウォラストナイト(SiO2・CaO)(キンセイマテック社製、製品名:SH-1250)アスペクト比10~16、平均粒径4.5~6.5μm
(E-2)ウォラストナイト(SiO2・CaO)(キンセイマテック社製、製品名:SH-800)アスペクト比15~20、平均粒径6~9μm
(E-3)ウォラストナイト(SiO2・CaO)(キンセイマテック社製、製品名:SH-600)アスペクト比12~18、平均粒径9.5~13μm
(E-4)ウォラストナイト(SiO2・CaO)(キンセイマテック社製、製品名:SH-400)アスペクト比12~18、平均粒径15~25μm
(E-5)ウォラストナイト(SiO2・CaO)(キンセイマテック社製、製品名:FRW-800)アスペクト比2~4、平均粒径3.5~4.5μm
(E-6)チタン酸カリウムウィスカー(K2OnTiO2)(大塚化学社製、製品名:ティスモ D)アスペクト比17~33、平均粒径0.3~0.6μm
(E-7)チタン酸カリウムウィスカー(K2OnTiO2)(大塚化学社製、製品名:テラセス TF-S)平均粒径3~11μm
(E-8)チタン酸カリウムウィスカー(K2OnTiO2)(大塚化学社製、製品名: テラセス JP)平均粒径6~13μm
(E-9)アルミナ(Al2O3・H2O)(河合石灰工業社製、製品名: セラシュール BMI)アスペクト比30~50、平均粒径4~6μm
(E-10)アルミナ(Al2O3・H2O)(河合石灰工業社製、製品名: セラシュール BMF)アスペクト比40~50、平均粒径3~5μm
(E-11)アルミナ(Al2O3・H2O)(河合石灰工業社製、製品名: セラシュール BMM)アスペクト比10、平均粒径0.8~1μm
下記の表1及び表2の配合に従い、ポリイソシアネート化合物、HFC成分を除くポリオール化合物、整泡剤、各種触媒、発泡剤、添加剤、及びフィラーを1000mLポリプロピレンビーカーにはかりとり、25℃、10秒間ハンドミキサーで撹拝した。撹拝後の混練物に対してポリイソシアネート化合物、HFC成分を加え、ハンドミキサーで約10秒間擾拝し発泡体を作成した。得られた難燃性ウレタン樹脂組成物は時間の経過と共に流動性を失い、実施例1~20及び比較例1~14の難燃性ウレタン樹脂組成物の発泡成形体を得た。
(総発熱量の測定)
硬化物から100mm×100mm×20mm(長さ方向×幅方向×厚み方向)になるようにコーンカロリーメーター試験用サンプルを切り出し、ISO-5660に準拠し、輻射熱強度50kW/m2にて20分間加熱した。結果を表1及び2に示す。
(密度の測定)
硬化物から100mm×100mm×20mm(長さ方向×幅方向×厚み方向)になるようにコーンカロリーメーター試験用サンプルを切り出し、ノギスを使用して寸法を計測し、電子天びんで質量を計測し密度を測定した。結果を表1及び2に示す。
(収縮測定)
上記のコーンカロリーメーター試験で加熱したときの収縮量及び変形量(mm)を測定した。図1(a)に示されるように、Xは長さ方向、Yは幅方向、図1(b)に示されるように、Zは厚み方向を示す。試験用サンプルをX方向,Y方向で3点ずつ測定し、Z方向は最も収縮した箇所で測定し、いずれの方向も最も収縮した数値を採用した。長さ方向及び幅方向の成形体の長さが95mmより大きい場合に合格、95mm以下を不合格とし、厚み方向の変形が10mm未満を合格、10mm以上を不合格とし、X,Y,Z方向のすべての方向で合格の場合を○と判定し、X,Y,Z方向の少なくとも一つの方向で不合格の場合を×と判定した。結果を表1及び2に示す。
実施例1で用いた各フィラーをウレタン樹脂100重量部に対し、3重量部、6重量部、又は9重量部とした以外は、実施例1と同じ材料及び配合で発泡成形体を製造した。各フィラーの粒径はX線透過式沈降法粒度分布測定装置で求め、アスペクト比を測定した。
Claims (6)
- ポリイソシアネート化合物、ポリオール化合物、三量化触媒、発泡剤、整泡剤、添加剤、およびフィラーを含む難燃性ウレタン樹脂組成物であって、前記添加剤が赤リンを含み、該フィラーのアスペクト比が5~50、平均粒径が0.1μm以上15μm未満、融点が750℃以上であることを特徴とする難燃性ウレタン樹脂組成物。
- 空気条件下でのTG/DTA測定における前記フィラーの重量減少率が5%以下である請求項1に記載の難燃性ウレタン樹脂組成物。
- 前記フィラーは針状の無機フィラーである請求項1又は2に記載の難燃性ウレタン樹脂組成物。
- 前記ポリイソシアネート化合物および前記ポリオール化合物からなるウレタン樹脂100重量部を基準として、前記赤リンが3.5~30重量部、前記フィラーが3~30重量部である請求項1~3のいずれか一項に記載の難燃性ウレタン樹脂組成物。
- 請求項1~4のいずれか一項に記載の難燃性ウレタン樹脂組成物からなる成形体。
- 100mm×100mm×20mmの前記成形体をISO-5660試験方法に従って輻射熱強度50kW/m2にて20分間加熱したときの加熱前に対する加熱後の成形体の長さ方向及び幅方向の寸法が95mmよりも大きく、厚み方向の変形が10mm未満である請求項5に記載の成形体。
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EP15843303.7A EP3199590A4 (en) | 2014-09-26 | 2015-09-25 | Flame-retardant urethane resin composition |
CN201580052396.7A CN106715589B (zh) | 2014-09-26 | 2015-09-25 | 阻燃性聚氨酯树脂组合物 |
KR1020177007586A KR102156004B1 (ko) | 2014-09-26 | 2015-09-25 | 난연성 우레탄 수지 조성물 |
US15/513,652 US10633480B2 (en) | 2014-09-26 | 2015-09-25 | Flame-retardant urethane resin composition |
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EP3199590A1 (en) | 2017-08-02 |
US10633480B2 (en) | 2020-04-28 |
TW201619289A (zh) | 2016-06-01 |
JP6134421B2 (ja) | 2017-05-24 |
JPWO2016047767A1 (ja) | 2017-04-27 |
KR20170060009A (ko) | 2017-05-31 |
US20170298170A1 (en) | 2017-10-19 |
JP2017025341A (ja) | 2017-02-02 |
CN106715589B (zh) | 2021-05-11 |
JP2016138293A (ja) | 2016-08-04 |
KR102156004B1 (ko) | 2020-09-15 |
CN106715589A (zh) | 2017-05-24 |
EP3199590A4 (en) | 2018-04-25 |
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