WO2017169494A1 - 難燃性熱可塑性樹脂組成物 - Google Patents
難燃性熱可塑性樹脂組成物 Download PDFInfo
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- WO2017169494A1 WO2017169494A1 PCT/JP2017/008183 JP2017008183W WO2017169494A1 WO 2017169494 A1 WO2017169494 A1 WO 2017169494A1 JP 2017008183 W JP2017008183 W JP 2017008183W WO 2017169494 A1 WO2017169494 A1 WO 2017169494A1
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- 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
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- 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
- C08K5/00—Use of organic ingredients
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L65/00—Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
Definitions
- the present invention relates to a flame retardant thermoplastic resin composition.
- Patent Document 1 discloses a resin composition in which an aliphatic polyester and a jute fiber, a rayon fiber or the like are blended as an organic filler derived from an aromatic polycarbonate resin.
- this resin composition has a large decrease in impact strength, an insufficient molded appearance, a large coloration, and insufficient thermal stability during molding.
- Patent Document 2 discloses a resin composition in which a polycarbonate resin is blended with cellulose fibers having an average fiber diameter of 5 to 50 ⁇ m and an average fiber length of 0.03 to 1.5 mm, and a terpene compound. Yes. However, this resin composition has a larger specific gravity than water and is not sufficient in terms of reducing the weight of the constituent material.
- Patent Document 3 discloses a method in which cellulose fibers from pulp are modified in a solution, microfibrillated using a twin-screw kneader, and uniformly dispersed in a matrix resin.
- the fiber composite material obtained as a result was still insufficient, and the mechanical strength was insufficient, and the effect of reducing the linear expansion coefficient was small. Furthermore, the addition of flame retardant is not described.
- Patent Document 4 discloses a method in which a terpene resin or the like is used as a dispersion resin when filling a thermoplastic polymer with natural fibers such as bamboo fibers. Although it is described that a flame retardant may be added, flame retardancy is not evaluated.
- JP 2010-215791 A International Publication No. 2013/133228 JP 2005-42283 A JP 2012-111855 A
- An object of the present invention is to provide a novel flame-retardant thermoplastic resin composition having excellent environmental characteristics, high rigidity and flame retardancy, and excellent molding appearance by using a biomass material.
- a resin composition comprising the following components (A) to (C).
- 3. The resin composition according to 1 or 2, wherein the (A) thermoplastic resin is polypropylene. 4).
- thermoplastic resin is block polypropylene. 5). 5. The resin composition according to any one of 1 to 4, wherein the thermoplastic resin (A) has a melt flow rate according to ASTM standard D1238 of 4 to 30 g / 10 minutes. 6). 6. The resin composition according to any one of 1 to 5, wherein the flame retardant component (B) includes a flame retardant and a flame retardant aid. 7). 6. The resin composition according to any one of 1 to 5, wherein the flame retardant component (B) is a phosphorus flame retardant. 8). 8. The resin composition according to any one of 1 to 7, wherein the flame retardant component (B) has a melting point of 250 ° C. or higher. 9. The resin composition according to any one of 1 to 8, further comprising (D) 0.5 to 20% by mass of a terpene resin. 10. A molded product obtained by molding the resin composition according to any one of 10.1 to 9.
- thermoplastic resin composition having excellent environmental characteristics, high rigidity and flame retardancy, and excellent molded appearance can be provided.
- the resin composition which is one embodiment of the present invention includes the following components (A) to (C).
- the resin composition which is one embodiment of the present invention is excellent in environmental characteristics, can achieve high rigidity and flame retardancy, and an excellent molded appearance by using nanocellulose which is a biomass material.
- the dispersibility of the flame retardant component in the resin composition can be improved.
- the dispersibility of the flame retardant component the generation of aggregates can be reduced, and the reduction in impact resistance due to the generation of aggregates can be suppressed.
- the amount of the flame retardant component used can be reduced as compared with the prior art by improving the flame retardancy, the cost can be reduced.
- the specific gravity can be lowered and the rigidity can be increased, and the adhesiveness, paintability, and the like can be improved.
- x to y represents a numerical range of “x or more and y or less”. Further, in the present specification, it is possible to arbitrarily adopt a rule that is preferable. That is, one definition that is preferable can be used in combination with one or more other rules that are preferable. It can be said that a combination of preferable ones is more preferable.
- each component contained in the resin composition which is one embodiment of the present invention will be described.
- thermoplastic resin of the component (A) examples include polyolefin resins, polystyrene resins, polyester resins, polyamide resins, and polycarbonate resins.
- the thermoplastic resin of component (A) may contain only one kind of the above resins, or may contain one or more kinds of the above resins in combination.
- polyolefin resin examples include polypropylene resin and polyethylene resin.
- polyolefin resin examples include polypropylene resin and polyethylene resin.
- polypropylene resin examples include polypropylene resin and polyethylene resin.
- polyethylene resin examples include polyethylene resin.
- the polypropylene resin can be composed of one or more selected from the group consisting of a homopolymer of propylene (homopolymer), a copolymer mainly composed of propylene, and the like.
- the resin composition which is lightweight and excellent in a moldability it is 230 degreeC and the melt flow rate with a load of 2.16 kg (henceforth "MFR").
- MFR melt flow rate with a load of 2.16 kg
- the melt flow rate at 230 ° C. is more preferably 4 to 30 g / 10 minutes, and further preferably 5 to 20 g / 10 minutes. Further, 5 to 15 g / 10 min is preferable.
- the melt flow rate can be measured according to ASTM standard D1238.
- the copolymer containing propylene as a main component is not particularly limited.
- a copolymer of propylene and ethylene, or a random copolymer of one or more ⁇ -olefins other than propylene and propylene is used.
- a block copolymer of propylene and one or more ⁇ -olefins other than propylene is used.
- the melt flow rate at 230 ° C. and a load of 2.16 kg is 0.1 to 200 g / 10 min from the viewpoint of obtaining a light weight and excellent resin composition.
- Propylene copolymers are preferred.
- the melt flow rate at 230 ° C. is more preferably 4 to 30 g / 10 minutes, and further preferably 5 to 20 g / 10 minutes. Further, 5 to 15 g / 10 min is preferable.
- ⁇ -olefins other than propylene examples include 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene and 1-hexadecene. , 1-octadecene, 1-eicosene and the like.
- the polyethylene-based resin can be composed of one or more selected from the group consisting of ethylene homopolymers, copolymers based on ethylene, and the like.
- the ethylene homopolymer is not particularly limited, and examples thereof include low density polyethylene, linear low density polyethylene, linear low density polyethylene, and high density polyethylene. From the viewpoint of obtaining a light weight and excellent moldability, an ethylene homopolymer having a melt flow rate of 0.01 to 200 g / 10 min at 190 ° C. and a load of 2.16 kg is preferable. If the melt flow rate at 190 ° C. and a load of 2.16 kg is within the above range, there is no possibility of causing problems in the fluidity of the resin composition and the surface appearance of the molded body. The melt flow rate at 190 ° C. and a load of 2.16 kg is more preferably 0.01 to 60 g / 10 min.
- the copolymer containing ethylene as a main component is not particularly limited.
- a random copolymer of ethylene and an ⁇ -olefin other than ethylene and a block copolymer of ethylene and an ⁇ -olefin other than ethylene.
- Etc. Among the copolymers having ethylene as a main component, the melt flow rate at 190 ° C. and a load of 2.16 kg is 0.01 to 200 g / 10 minutes from the viewpoint of obtaining a light weight and excellent resin composition. Ethylene copolymers are preferred. If the melt flow rate at 190 ° C.
- the melt flow rate at 190 ° C. and a load of 2.16 kg is more preferably 0.01 to 60 g / 10 min.
- ⁇ -olefins other than ethylene examples include propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1 -Hexadecene, 1-octadecene, 1-eicocene and the like.
- polystyrene resins examples include the series of polypropylene resins “Prime Polypro”, “Polyfine”, “Prime TPO” manufactured by Prime Polymer Co., Ltd. (for example, product number: J-700GP), manufactured by Idemitsu Kosan Co., Ltd. Polypropylene resin (product number: J-966HP), various polyethylene resins made by Prime Polymer Co., Ltd. “Hi-Zex”, “Neo-Zex”, “Ult-Zex”, “Moretech”, “Evolue” series (for example, high-density polyethylene) Resin, product number: 2200J), low-density polyethylene (for example, product number: Petrocene 190) manufactured by Tosoh Corporation.
- polystyrene resins examples include polystyrene, poly (p-methylstyrene), poly (m-methylstyrene), poly (p-tert-butylstyrene), poly (p-chlorostyrene), and poly (m-chlorostyrene). ), Poly (p-fluorostyrene), hydrogenated polystyrene, and copolymers containing these structural units. These polystyrene resins may be used alone or in combination of two or more.
- polystyrene resins examples include PSJ-polystyrene series (for example, product number: H8672) manufactured by PS Japan, and Toyostyrene series manufactured by Toyo Styrene Co., Ltd.
- the polyester resin is not particularly limited.
- These polyester resins may be used alone or in combination of two or more.
- Polylactic acid resin or a copolymer resin containing polylactic acid is obtained by heat dehydration polymerization of lactic acid or lactic acid and other hydroxycarboxylic acid, and the resulting low molecular weight polylactic acid or copolymer thereof is further thermally decomposed under reduced pressure. It is obtained by producing lactide, which is a cyclic dimer of lactic acid or a copolymer thereof, and then polymerizing this lactide in the presence of a catalyst such as a metal salt.
- polyester resins examples include Mitsui PET (registered trademark) series (for example, product number: Mitsui J125) manufactured by Mitsui Chemicals, and Byron series manufactured by Toyobo.
- the polyamide resin is not particularly limited, and examples thereof include a lactam ring-opening polymer, a polycondensate of diamine and dibasic acid, and a polycondensate of ⁇ -amino acid. These polyamide resins may be used alone or in combination of two or more.
- polyamide resins include Nylon 6 and Nylon 66 made by Toray Industries, Inc., Leona series, polyamide 66 resin made by Asahi Kasei Co., Ltd., n-nylon and n, m-nylon series made by Teijin Ltd. Etc.
- the polycarbonate resin is not particularly limited, and may be an aromatic polycarbonate resin or an aliphatic polycarbonate resin.
- An aromatic polycarbonate resin is preferably used from the viewpoints of the compatibility of the component (B) described later with a flame retardant component and the impact resistance and heat resistance of a molded product obtained from the resin composition.
- Aromatic polycarbonate resin an aromatic polycarbonate resin produced by a reaction between a dihydric phenol and a carbonate precursor can be usually used.
- Aromatic polycarbonate resin has good heat resistance, flame retardancy, and impact resistance compared to other thermoplastic resins, and can therefore be the main component of a resin composition.
- the polyorganosiloxane constituting the aromatic polycarbonate-polyorganosiloxane copolymer is preferably polydimethylsiloxane from the viewpoint of flame retardancy.
- aromatic polycarbonate resins examples include the Toughlon series manufactured by Idemitsu Kosan Co., Ltd. and the Panlite series manufactured by Teijin Limited.
- Thermoplastic resins that are compatible may be used as appropriate. For example, if an appropriate amount of a polyester resin is mixed with an aromatic polycarbonate resin generally considered to have poor fluidity, the fluidity is improved.
- thermoplastic resins described above an appropriate amount of other thermoplastic resins compatible with them, such as AS resin and (meth) acrylic acid ester (co) polymer, may be mixed.
- the thermoplastic resin of component (A) is preferably at least one selected from the group consisting of polyolefin resins and polystyrene resins.
- the thermoplastic resin of component (A) is preferably polypropylene.
- polypropylene which is a polyolefin resin
- the effect of improving flame retardancy can be further increased.
- thermoplastic resin of component (A) is block polypropylene. Thereby, the impact resistance of the molded object obtained from a resin composition can be made excellent.
- the melt flow rate (230 ° C., 2.16 kg) of the thermoplastic resin of component (A) is 4 to 30 g / from the viewpoint of impact strength of the molded product obtained from the resin composition. It is preferably 10 minutes, more preferably 5 to 20 g / 10 minutes, and further preferably 5 to 15 g / 10 minutes.
- the thermoplastic resin of component (A) is 35 to 96% by mass, preferably 40 to 90% by mass, based on the total mass of the resin composition. More preferably, it is 50 to 85% by mass.
- the flame retardant component of the component (B) is at least one selected from the group consisting of a flame retardant and a flame retardant aid.
- the flame retardant is not particularly limited. Phosphorus flame retardant; silicone flame retardant; halogen compound; organic alkali metal salt; organic alkaline earth metal salt; nitrogen compound; aluminum hydroxide, magnesium hydroxide, calcium hydroxide , Metal hydroxides such as barium hydroxide, zirconium hydroxide, basic magnesium carbonate, dolomite, zinc hydroxystannate, tin oxide hydrate, borax; zinc borate, zinc metaborate, barium metaborate, boric acid Boric acid compounds such as aluminum and sodium polyborate; silicon compounds such as silica (silicon dioxide), synthetic amorphous silica (silicon dioxide), aluminum silicate, magnesium silicate, calcium silicate, zirconium silicate, diatomaceous earth ; Aluminum oxide, magnesium oxide, barium oxide, titanium oxide, suboxide , Tin oxide, zirconium oxide, molybdenum oxide, zirconium - metal oxides of antimony composite oxide, and the like; expandable graphite, a known, can
- the phosphorus flame retardant preferably does not contain halogen.
- halogen When halogen is contained, there is a risk of generation of harmful gases and mold corrosion when molding resin compositions, and there is a risk of discharging harmful substances when incinerating molded products. From the viewpoint of environmental pollution and safety Is not preferable.
- the phosphorus-based flame retardant containing no halogen include a halogen-free organic phosphorus-based flame retardant.
- the organic phosphorus flame retardant any organic compound having a phosphorus atom and not containing a halogen can be used without particular limitation.
- a phosphoric acid ester compound, a phosphoric acid amine salt, ammonium polyphosphate, etc. are mentioned. Of these, phosphate ester compounds having at least one ester oxygen atom directly bonded to a phosphorus atom are preferably used.
- halogen-free phosphorus flame retardants other than organic phosphorus flame retardants include red phosphorus.
- R 11 , R 12 , R 13 and R 14 each independently represents a hydrogen atom or an organic group
- X represents a divalent or higher valent organic group
- m is 0 or 1
- n is an integer of 1 or more
- r represents an integer of 0 or more.
- the organic group is a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or the like.
- substituents when it is substituted include an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an arylthio group, and the like, and further, an arylalkoxyalkyl group that is a combination of these substituents, or the like, or An arylsulfonylaryl group in which these substituents are combined by an oxygen atom, a nitrogen atom, a sulfur atom, or the like may be used.
- the divalent or higher valent organic group X is a divalent or higher valent group formed by removing one or more hydrogen atoms bonded to carbon atoms from the above organic group.
- it is derived from an alkylene group, a (substituted) phenylene group, or a bisphenol that is a polynuclear phenol.
- Preferable ones include divalent or higher valent groups derived from bisphenol A, hydroquinone, resorcinol, diphenylmethane, dihydroxydiphenyl, dihydroxynaphthalene and the like.
- the phosphate ester compound may be a monomer, dimer, oligomer, or polymer, or a mixture thereof. Specifically, trimethyl phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, tributoxyethyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyl diphenyl phosphate, octyl diphenyl phosphate, tri (2-ethylhexyl) phosphate, diisopropyl Phenyl phosphate, trixylenyl phosphate, tris (isopropylphenyl) phosphate, trinaphthyl phosphate, bisphenol A bisdiphenyl phosphate, hydroquinone bisdiphenyl phosphate, resorcin bisdiphenyl phosphate, resorcinol-diphenyl phosphate, trioxybenzene tri
- Examples of phosphoric acid amine salts include 1,2-diaminoethane, 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6 -Diaminohexane, urea, N, N'-dimethylurea, thiourea, isocyanuric acid, ethylene urea, ethylene thiourea, hydantoin, hexahydropyrimidin-2-one, parabanic acid, valpituric acid, ammelin, melon, melam, guanazole , Guanazine, guanidine, ethyleneimine, pyrrolidine, 2-pyrrolidone, 3-pyrrolidone, piperidine, morpholine, thiomorpholine, ⁇ -piperidone, ⁇ -piperidone, piperazine,
- the condensed phosphoric acid refers to polyphosphoric acid obtained by condensing three or more molecules of phosphoric acid, and may be triphosphoric acid, tetraphosphoric acid, a condensate of more phosphoric acid, or a mixture thereof.
- the condensed phosphoric acid mainly has a linear structure, but may contain a branched structure and a cyclic structure.
- halogen-free phosphate ester compounds examples include, for example, TPP [triphenyl phosphate], TXP [trixylenyl phosphate], CR-733S [resorcinol bis (diphenyl phosphate)] manufactured by Daihachi Chemical Industry Co., Ltd.
- ammonium polyphosphate examples include AP-422 (manufactured by Clariant), TERRJU-S10 (manufactured by Budenheim), TERRJU-S20 (manufactured by Budenheim), and the like.
- ammonium polyphosphate is susceptible to hydrolysis, so ammonium polyphosphate is microencapsulated with a thermosetting resin, coated with melamine monomer or other nitrogen-containing organic compound, etc. It is preferable to use a compound containing ammonium polyphosphate as a main component, such as a compound treated with an activator or a silicone compound, a compound that is made slightly soluble by adding melamine or the like in the process of producing ammonium polyphosphate.
- silicone flame retardant examples include silicone oil, silicone resin, and the like. More specifically, a silicone compound having a specific structure containing a reactive group such as an alkoxy group or an epoxy group, or the amount of oxygen in a repeating unit. And silicone resins having different specific molecular weights (see JP-A-6-306265, JP-A-6-336547, JP-A-8-176425, JP-A-10-139964, etc.).
- a functional group-containing silicone compound for example, a (poly) organosiloxane having a functional group is preferable.
- R 5 a R 6 b SiO (4-ab) / 2 [wherein R 5 is a functional group-containing group, R 6 is a hydrocarbon group having 1 to 12 carbon atoms, 0 ⁇ a ⁇ 3, A polymer or copolymer having a basic structure represented by 0 ⁇ b ⁇ 3, 0 ⁇ a + b ⁇ 3] is preferable.
- the functional group include an alkoxy group, an aryloxy group, a polyoxyalkylene group, a hydroxyl group, a carboxyl group, a cyanol group, an amino group, a mercapto group, and an epoxy group.
- the functional group-containing silicone compound may have different functional groups, and a plurality of different functional group-containing silicone compounds may be used in combination.
- the functional group-containing silicone compound has a functional group (R 5 ) / hydrocarbon group (R 6 ) ratio of usually 0.1 to 3, preferably 0.3 to 2.
- silicone flame retardants are usually in the form of liquid or powder, but are preferably in the form of good dispersibility in melt kneading.
- a liquid having a viscosity of about 10 to 500,000 cst (centistokes) at room temperature can be used.
- the silicone-based flame retardant has a functional group, even if it is in a liquid state, the silicone flame retardant is uniformly dispersed in the composition, and is characterized by being less likely to bleed during molding or on the surface of the molded product.
- halogen compounds include 2,4,6-tris (2,4,6-tribromophenoxy) -1,3,5-triazine, brominated epoxy oligomer, ethylene bis (pentabromophenyl), ethylene bis (tetra Bromophthalimide), decabromodiphenyl ether, tetrabromobisphenol A, halogenated polycarbonate, halogenated polycarbonate (co) polymer, halogenated polycarbonate or halogenated polycarbonate (co) polymer oligomer, halogenated polystyrene, halogenated polyolefin, etc. Can be mentioned.
- organic alkali metal salts and organic alkaline earth metal salts there are various kinds of organic alkali metal salts and organic alkaline earth metal salts, and examples thereof include alkali metal salts and alkaline earth metal salts of organic acids or organic acid esters having at least one carbon atom.
- the organic acid or the organic acid ester is an organic sulfonic acid, an organic carboxylic acid, or the like.
- the alkali metal is sodium, potassium, lithium, cesium or the like
- the alkaline earth metal is magnesium, calcium, strontium, barium or the like. Of these, sodium, potassium, and cesium salts are preferably used.
- the salt of the organic acid may be substituted with a halogen such as fluorine, chlorine or bromine.
- alkali metal salt or alkaline earth metal salt of perfluoroalkanesulfonic acid represented by the following general formula (2) Is preferably used.
- n represents an integer of 1 to 10
- M represents an alkaline metal such as lithium, sodium, potassium or cesium, or an alkaline earth metal such as magnesium, calcium, strontium or barium
- m represents an atom of M. The price is shown.
- these compounds for example, those described in Japanese Patent Publication No. 47-40445 correspond to this.
- examples of the perfluoroalkanesulfonic acid include perfluoromethanesulfonic acid, perfluoroethanesulfonic acid, perfluoropropanesulfonic acid, perfluorobutanesulfonic acid, perfluoromethylbutanesulfonic acid, Fluorohexanesulfonic acid, perfluoroheptanesulfonic acid, perfluorooctanesulfonic acid and the like can be mentioned.
- these potassium salts are preferably used.
- organic alkali metal salts and organic alkaline earth metal salts include 2,5-dichlorobenzenesulfonic acid; 2,4,5-trichlorobenzenesulfonic acid; diphenylsulfone-3-sulfonic acid; diphenylsulfone-3,3 Examples include '-disulfonic acid; alkali metal salts and alkaline earth metal salts of organic sulfonic acids such as naphthalene trisulfonic acid.
- thermoplastic resin in which an aromatic ring of a vinyl-based thermoplastic resin is substituted with a sulfonate group, a borate group, a phosphate group, or the like can also be used as a flame retardant.
- aromatic vinyl resin include thermoplastic resins having at least a styrene structure such as polystyrene, rubber-modified polystyrene, styrene-acrylonitrile copolymer, ABS resin, and among them, polystyrene resin is preferably used.
- Substituted acid bases include alkali metal salts and alkaline earth salts.
- organic carboxylic acid examples include perfluoroformic acid, perfluoromethanecarboxylic acid, perfluoroethanecarboxylic acid, perfluoropropanecarboxylic acid, perfluorobutanecarboxylic acid, perfluoromethylbutanecarboxylic acid, perfluorohexanecarboxylic acid.
- Perfluoroheptanecarboxylic acid, perfluorooctanecarboxylic acid, and the like, and alkali metal salts and alkaline earth metal salts of these organic carboxylic acids are used. Alkali metals and alkaline earth metals are as described above.
- nitrogen compound examples include melamine, alkyl group, or aromatic group-substituted melamine.
- the flame retardant aid is not particularly limited, and antimony compounds such as antimony trioxide and antimony pentoxide; zinc borate, polytetrafluoroethylene, metal oxide, silicon dioxide, hydrotalcite, magnesium bicarbonate, zinc oxide, Aluminum oxide, magnesium oxide, zirconium oxide, vanadium oxide, molybdenum oxide and their surface-treated products (surface coated with silane compound, etc.), melamine, melamine cyanurate, pentaerythritol, dipentaerythritol, tripentaerythritol, monopenta Examples include erythritol and tris (2-hydroxyethyl) isocyanurate. Of these, antimony compounds are preferred.
- the flame retardant component of component (B) preferably contains a flame retardant and a flame retardant aid. Thereby, high flame retardance can be provided to the resin composition.
- the flame retardant component of component (B) is preferably a phosphorus flame retardant.
- the melting point of the flame retardant component of component (B) is preferably 250 ° C. or higher, more preferably 300 ° C. or higher, and 350 ° C. or higher. More preferably.
- the flame retardant component having a melting point of 250 ° C. or higher include metal hydroxide salt, ammonium polyphosphate, polyphosphate, piperazine pyrophosphate, ethylenebis (pentabromophenyl), and the like. Note that “the melting point is Z ° C.
- the flame retardant component melts at a temperature of Z ° C. or higher, or does not melt at a temperature lower than Z ° C. and decomposes at a temperature of Z ° C. or higher. It shall be said.
- the flame retardant component (B) is 3 to 60% by mass, preferably 5 to 50% by mass, based on the total mass of the resin composition. More preferably, it is 5 to 30% by mass. If the blending amount of the flame retardant component is small, the intended flame retardancy cannot be obtained. On the other hand, if the blending amount is more than 60% by mass, the molded product obtained from the resin composition becomes brittle, resulting in a product. It becomes difficult to handle.
- Nanocellulose Nanocellulose of component (C) is cellulose having an average fiber diameter of 3 to 200 nm.
- the fiber constituting the nanocellulose is not particularly limited as long as it is formed of a polysaccharide having a ⁇ -1,4-glucan structure.
- a cellulose fiber derived from a higher plant for example, wood fiber (conifer, broadleaf, etc.) Wood pulp, etc.), bamboo fiber, sugarcane fiber, seed hair fiber (cotton linter, Bombax cotton, kapok, etc.), gin leather fiber (eg hemp, mulberry, mitsumata etc.), leaf fiber (eg, Manila hemp, New Zealand hemp) Natural cellulose fibers (pulp fibers, etc.)], animal-derived cellulose fibers (squirt cellulose, etc.), bacterial cellulose fibers, chemically synthesized cellulose fibers [cellulose acetate (cellulose acetate), cellulose propio , Cellulose butyrate, cellulose acetate propionate, cellulose Organic acid esters such as cetate butyrate; Inorganic acid esters such as cellulose nitrate, cellulose
- plant-derived cellulose has high production efficiency in terms of dispersibility, rigidity and impact resistance when producing nanocellulose, and has an appropriate fiber diameter and fiber length.
- Fibers such as cellulose fibers derived from pulp such as wood fibers (wood pulp such as conifers and hardwoods) and seed hair fibers (cotton linter pulp etc.) are preferred.
- the average fiber diameter of nanocellulose is 3 to 200 nm, preferably 10 to 150 nm, more preferably 20 to 100 nm. When the average fiber diameter is out of the above range, the effect of improving flame retardancy is not sufficiently exhibited.
- the average fiber diameter is an average value of fiber diameters measured at 100 locations, magnified 5000 times with an electron microscope.
- the nanocellulose as the component (C) is 0.5 to 20% by mass, preferably 1 to 15% by mass, based on the total mass of the resin composition. More preferably, it is 3 to 10% by mass.
- the amount of nanocellulose is less than 0.5% by mass, improvement in mechanical properties such as dispersibility improvement and rigidity of the flame retardant is not observed.
- the content is more than 20% by mass, the flame retardancy is decreased and the impact strength is significantly decreased.
- the resin composition according to one embodiment of the present invention preferably further includes (D) 0.5 to 20% by mass of a terpene resin.
- the terpene resin of component (D) is usually polymerized only in the presence of a Friedel-Crafts type catalyst in an organic solvent, or a terpene monomer and an aromatic monomer, Or although it says what was obtained by copolymerizing a terpene monomer and phenols, it is not limited to these. Moreover, the hydrogenated terpene resin obtained by hydrogenating the obtained terpene resin may be used.
- terpene resin examples include ⁇ -pinene resin, ⁇ -pinene resin, aromatic modified terpene resin, terpene phenol resin, hydrogenated terpene resin and the like.
- hemiterpenes having 5 carbon atoms such as isoprene; ⁇ -pinene, ⁇ -pinene, dipentene, d-limonene, myrcene, allocymene, osimene, ⁇ -ferrandrene, ⁇ -terpinene, ⁇ -terpinene, C10 monoterpenes such as terpineolene, 1,8-cineole, 1,4-cineole, ⁇ -terpineol, ⁇ -terpineol, ⁇ -terpineol, sabinene, paramentadienes, carenes; cariophyllene, longifolene, etc.
- Examples include, but are not limited to, sesquiterpenes having 15 carbon atoms; diterpenes having 20 carbon atoms, and the like. Of these compounds, ⁇ -pinene, ⁇ -pinene, dipentene and d-limonene are particularly preferably used.
- Aromatic monomers include, but are not limited to, styrene, ⁇ -methyl styrene, vinyl toluene, isopropenyl toluene, and the like.
- phenols include, but are not limited to, phenol, cresol, xylenol, bisphenol A, and the like.
- the terpene resin can be added to disperse the nanocellulose as the component (C) in the resin composition. Moreover, you may add to the other component which comprises a resin composition as a masterbatch which mix
- the terpene resin as component (D) is preferably 0.5 to 20% by mass, more preferably 1 to 15% by mass, based on the total mass of the resin composition. More preferably, it is 3 to 10% by mass. If content of a terpene-type resin is said range, the affinity of a component (C) and a component (A) will improve, and a flame retardance, a dispersibility, and an external appearance will improve more.
- the resin composition which is one embodiment of the present invention includes, as optional components, an ultraviolet absorber, an antioxidant, a light stabilizer, a lubricant, a crystal nucleating agent, a softening agent, an antistatic agent, a filler, a pigment, a dye, and a reinforcing agent. , Mold release agents, plasticizers, fluidity improvers and the like may be included in any amount. However, in this case, the resin composition which is one embodiment of the present invention has the specific amount range described above for the components (A) to (C) or the components (A) to (D) when the optional components are excluded. (% By mass).
- the resin composition of the present invention may consist essentially of component (A), component (B), component (C), and optionally component (D) (consisting essentially of).
- component (A), component (B), component (C), and optionally component (D) consisting essentially of.
- 70% by weight or more, 80% by weight or more, or 90% by weight or more of the resin composition of the present invention comprises component (A), component (B), component (C), and optionally component (D). It may be.
- the composition of the present invention may consist of only component (A), component (B), component (C), and optionally component (D) (consisting of). In this case, inevitable impurities may be included within a range not impairing the effects of the present invention.
- the resin composition which is one embodiment of the present invention can be produced by melt-kneading the above-described components (A) to (C), the component (D) and optional components blended as necessary.
- the mixture of the above components can be melt-kneaded with an extruder or the like and granulated with a pelletizer, so that it can be processed into pellets.
- it can be set as a molded object by shaping the resin composition or pellet which is 1 aspect of this invention with various molding machines.
- the molding method is not particularly limited, and known methods such as injection molding, profile extrusion molding, and sheet extrusion molding can be applied.
- the molded body that is one embodiment of the present invention is formed by molding the above-described resin composition that is one embodiment of the present invention.
- the molded body which is one embodiment of the present invention has high flame retardancy and excellent molding appearance.
- the molded article that is one embodiment of the present invention preferably has a tensile modulus of 1000 MPa or more, more preferably 1200 MPa or more, and even more preferably 1500 MPa or more.
- the tensile modulus can be measured according to ASTM D638.
- the molded body which is one embodiment of the present invention preferably has a limiting oxygen index (LOI) of 23% or more, more preferably 25% or more. Preferably, it is more preferably 28% or more.
- the critical oxygen index is an index indicating the minimum oxygen concentration necessary for the material to continue burning, and can be measured in accordance with JIS K7201-2.
- Examples 1 to 10 and Comparative Examples 1 to 19 As shown in Tables 1 to 4, a resin composition was prepared by blending each component in a predetermined ratio. At this time, 0.2 parts by mass of Irganox 1010 (BASF) and 0.1 part by mass of ADK STAB 2112 (ADEKA) were blended as antioxidants with 100 parts by mass of the obtained resin composition. This composition was supplied to an extruder (model name: PCM-30, Ikekai Co., Ltd.), melt-kneaded at 210 to 260 ° C., and pelletized.
- BASF Irganox 1010
- ADK STAB 2112 ADK STAB 2112
- the obtained pellets were dried at 80 ° C. for 12 hours and then injection-molded with an injection molding machine (model: IS100N, Toshiba Machine Co., Ltd.) under conditions of a cylinder temperature of 210 to 260 ° C. and a mold temperature of 40 ° C. A specimen was obtained. Each physical property shown below was evaluated using the obtained test piece. The results are shown in Tables 1 to 4.
- the limiting oxygen index (LOI) was measured according to JIS K7201-2.
- Izod impact strength The Izod (IZOD) impact strength of the component (A) used was measured at 23 ° C. using a test piece having a thickness of 1/8 inch (1 / 20.3 cm) in accordance with ASTM D256.
- the dispersion state of the material in the test piece was evaluated.
- the test piece was immersed in liquid nitrogen for 1 minute, frozen, then bent and broken, and the cross section was observed at 2000 times using a scanning electron microscope (SEM). The case where the aggregate was observed was evaluated as “NG”.
- Flame retardant 1 Piperazine pyrophosphate (FP2050, no melting point, ADEKA Corporation)
- Flame retardant 2 Phosphate ester (PX-200, melting point 96 ° C., Daihachi Chemical Industry Co., Ltd.)
- Flame retardant 3 ammonium polyphosphate (TERRAJU C-30, no melting point, Boudenheim)
- Flame retardant 4 Magnesium hydroxide (Kisuma 5AC, no melting point, Kyowa Chemical Industry Co., Ltd.)
- Flame retardant 5 sodium polyborate (no melting point, SOUFA Corporation)
- Flame retardant 6 ethylene bis (pentabromophenyl) (Cytex 8010, melting point 350 ° C., Albemarle) ⁇
- Flame retardant aid Antimony trioxide (PATOX-M, no melting point, Nippon Seiko Co., Ltd.) “No melting point” means that no melting or decomposition occurs at 210 to 260 ° C. which is the cylinder
- Component (C) ⁇ Nanocellulose A (CNF-10, average fiber diameter 30 nm, Chuetsu Pulp Industries) ⁇ Cellulose fiber (SW-10, average fiber diameter 25 ⁇ m, Celite) ⁇ Nanocellulose B (KY-100G, average fiber diameter 100 nm, Daicel FineChem) [Component (D)] Terpenephenol (YS Polystar T130 (hydroxyl value 60), Yasuhara Chemical Co., Ltd.)
- Flame retardancy (LOI) was not improved in a resin composition in which nanocellulose and / or terpene resin was blended with polypropylene, which is a thermoplastic resin.
- a flame retardant that does not melt flame retardants 1, 3 to 6
- the dispersibility of the flame retardant in the resin is good, and the flame retardancy of the resin composition is improved.
- the affinity with polypropylene was low and could not be kneaded (Comparative Example 10). It became possible and flame retardancy was improved.
- the resin composition containing cellulose fiber having a dimension of ⁇ m order although the elastic modulus was improved, the dispersibility of the flame retardant in the resin composition was poor, and the flame retardancy was not improved.
- the resin composition and molded product that are one embodiment of the present invention can be suitably used for various materials in the fields of automobiles, industrial materials, building materials, electronic / electric equipment, OA equipment, and machinery.
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Abstract
Description
1.下記成分(A)~(C)を含む樹脂組成物。
(A)熱可塑性樹脂 35~96質量%
(B)難燃剤及び難燃助剤からなる群より選ばれる1種以上である難燃化成分 3~60質量%
(C)平均繊維径3~200nmのナノセルロース 0.5~20質量%
2.前記(A)熱可塑性樹脂が、ポリオレフィン系樹脂及びポリスチレン系樹脂からなる群より選ばれる1種以上である、1に記載の樹脂組成物。
3.前記(A)熱可塑性樹脂がポリプロピレンである、1又は2に記載の樹脂組成物。
4.前記(A)熱可塑性樹脂がブロックポリプロピレンである、1~3のいずれかに記載の樹脂組成物。
5.前記(A)熱可塑性樹脂のASTM規格D1238によるメルトフローレートが4~30g/10分である、1~4のいずれかに記載の樹脂組成物。
6.前記(B)難燃化成分が、難燃剤及び難燃助剤を含む、1~5のいずれかに記載の樹脂組成物。
7.前記(B)難燃化成分がリン系難燃剤である、1~5のいずれかに記載の樹脂組成物。
8.前記(B)難燃化成分の融点が250℃以上である、1~7のいずれかに記載の樹脂組成物。
9.さらに(D)テルペン系樹脂を0.5~20質量%含む、1~8のいずれかに記載の樹脂組成物。
10.1~9のいずれかに記載の樹脂組成物を成形してなる成形体。
本発明の一態様である樹脂組成物は、下記成分(A)~(C)を含むものである。
(A)熱可塑性樹脂 35~96質量%
(B)難燃剤及び難燃助剤からなる群より選ばれる1種以上である難燃化成分 3~60質量%
(C)平均繊維径3~200nmのナノセルロース 0.5~20質量%
また、ナノセルロースを使用することにより、低比重にして高剛性とすることができ、かつ、接着性、塗装性等の向上を図ることができる。
また、本明細書において、好ましいとされている規定は任意に採用することができる。即ち、好ましいとされている一の規定を、好ましいとされている他の一又は複数の規定と組み合わせて採用することができる。好ましいもの同士の組み合わせはより好ましいと言える。
以下、本発明の一態様である樹脂組成物に含まれる各成分について説明する。
成分(A)の熱可塑性樹脂としては、例えば、ポリオレフィン系樹脂、ポリスチレン系樹脂、ポリエステル樹脂、ポリアミド樹脂、ポリカーボネート樹脂等が挙げられる。
成分(A)の熱可塑性樹脂は、上記の樹脂のうち1種のみを含んでいてもよく、又は、上記の樹脂のうち1種以上を組み合わせて含んでいてもよい。
尚、本発明において、「ポリオレフィン系樹脂」、「ポリプロピレン系樹脂」、「ポリエチレン系樹脂」とは、それぞれ、樹脂を構成する主成分が、ポリオレフィン、ポリプロピレン、又はポリエチレンであり、他の成分を含んでもよい樹脂をいう。
尚、メルトフローレートは、ASTM規格D1238により測定できる。
成分(B)の難燃化成分は、難燃剤及び難燃助剤からなる群より選択される1種以上である。
ハロゲンを含まないリン系難燃剤としては、ハロゲン非含有有機リン系難燃剤がある。有機リン系難燃剤としては、リン原子を有し、ハロゲンを含まない有機化合物であれば特に制限なく用いることができる。例えば、リン酸エステル化合物、リン酸アミン塩、ポリリン酸アンモニウム等が挙げられる。中でも、リン原子に直接結合するエステル性酸素原子を1つ以上有するリン酸エステル化合物が好ましく用いられる。有機リン系難燃剤以外のハロゲン非含有リン系難燃剤としては、赤リン等がある。
式(IV)において、有機基とは、置換又は未置換のアルキル基、置換又は未置換のシクロアルキル基、置換又は未置換のアリール基等である。置換されている場合の置換基としては、アルキル基、アルコキシ基、アリール基、アリールオキシ基、アリールチオ基等が挙げられ、さらに、これらの置換基を組み合わせた基であるアリールアルコキシアルキル基等、又はこれらの置換基を酸素原子、窒素原子、イオウ原子等により結合して組み合わせたアリールスルホニルアリール基等であってもよい。
シリコーン系難燃剤としては、官能基含有シリコーン化合物、例えば、官能基を有する(ポリ)オルガノシロキサン類が好ましい。具体的には、式R5 aR6 bSiO(4-a-b)/2〔R5は官能基含有基、R6は炭素数1~12の炭化水素基、0<a≦3、0≦b<3、0<a+b≦3〕で表される基本構造を有する重合体、又は共重合体が好ましい。官能基としては、アルコキシ基、アリールオキシ基、ポリオキシアルキレン基、水酸基、カルボキシル基、シアノール基、アミノ基、メルカプト基、エポキシ基等が挙げられる。官能基含有シリコーン化合物は、異なる官能基を有していてもよく、複数の異なる官能基含有シリコーン化合物を併用してもよい。官能基含有シリコーン化合物は、その官能基(R5)/炭化水素基(R6)の比が、通常0.1~3であり、好ましくは0.3~2である。
(CnF2n+1SO3)mM (2)
(式中、nは1~10の整数を示し、Mはリチウム、ナトリウム、カリウム、セシウム等のアリカリ金属、又はマグネシウム、カルシウム、ストロンチウム、バリウム等のアルカリ土類金属を示し、mはMの原子価を示す。)
これらの化合物としては、例えば、特公昭47-40445号公報に記載されているものがこれに該当する。
本発明の一態様である樹脂組成物において、成分(B)の難燃化成分がリン系難燃剤であることが好ましい。
融点が250℃以上である難燃化成分としては、例えば、水酸化金属塩、ポリリン酸アンモニウム、ポリリン酸塩、ピロリン酸ピペラジン、エチレンビス(ペンタブロモフェニル)等が挙げられる。
尚、「融点がZ℃以上である」とは、難燃化成分が、Z℃以上の温度で溶融するか、又は、Z℃未満の温度では溶融せず、Z℃以上の温度で分解することをいうものとする。
成分(C)のナノセルロースは、平均繊維径が3~200nmであるセルロースである。
本発明の一態様である樹脂組成物は、さらに(D)テルペン系樹脂を0.5~20質量%含むことが好ましい。これにより、成分(C)のナノセルロースの樹脂組成物中における分散性をより向上させることが可能となり、よって、成分(B)の難燃化成分による難燃効果も向上させることができる。
また、フェノール類としては、フェノール、クレゾール、キシレノール、ビスフェノールA等が挙げられるが、これらに限定されない。
本発明の一態様である樹脂組成物は、任意成分として、紫外線吸収剤、酸化防止剤、光安定剤、滑剤、結晶核剤、軟化剤、帯電防止剤、充填剤、顔料、染料、強化剤、離型剤、可塑剤、流動性改良剤等を任意の量で含んでもよい。但し、この場合、本発明の一態様である樹脂組成物は、任意成分を除いたときに、成分(A)~(C)又は成分(A)~(D)を上記説明した特定の量範囲(質量%)で含むものとする。
また、本発明の一態様である樹脂組成物又はペレットを各種成形機により賦形することにより、成形体とすることができる。成型方法は特に限定されず、射出成形、異形押出成形、シート押出成形等、公知の方法を適用できる。
本発明の一態様である成形体は、上記説明した本発明の一態様である樹脂組成物を成形してなるものである。
本発明の一態様である成形体は、難燃性が高く、成形外観に優れる。
尚、限界酸素指数は、材料が燃焼を持続するために必要な最低酸素濃度を示す指数であり、JIS K7201-2に準拠して測定することができる。
表1~4に示すように、各成分を所定の割合で配合して樹脂組成物を調製した。このとき、得られた樹脂組成物100質量部に対して、酸化防止剤としてイルガノックス1010(BASF社)0.2質量部、アデカスタブ2112(株式会社ADEKA)0.1質量部を配合した。
この組成物を押出機(機種名:PCM-30、株式会社池貝)に供給し、210~260℃で溶融混練し、ペレット化した。
引張弾性率は、ASTM D638に準拠して測定した。
限界酸素指数(LOI)は、JIS K7201-2に準拠して測定した。
使用した成分(A)のアイゾッド(IZOD)衝撃強度は、ASTM D256に準拠して、肉厚1/8インチ(1/20.3cm)の試験片を用いて23℃で測定した。
表面外観は、寸法8×8×0.3cmの試験片の一方の表面を観察し、0.1mm以上の寸法の凹みが20個未満存在する場合を「OK」とし、20個以上存在する場合を「NG」と評価した。
試験片における材料の分散状態を評価した。試験片を液体窒素中に1分間浸漬し凍結させてから、折り曲げて破断し、その断面を、走査型電子顕微鏡(SEM)を用いて2000倍で観察し、凝集物が見られない場合を「OK」とし、凝集物がみられる場合を「NG」と評価した。
[成分(A)]
・樹脂1:ホモポリプロピレン(E-105GM、MFR(230℃、2.16kg)=0.5g/10min、IZOD衝撃強度=7kJ/m2、株式会社プライムポリマー)
・樹脂2:ブロックポリプロピレン(J-966HP、MFR(230℃、2.16kg)=30g/10min、IZOD衝撃強度=60kJ/m2、株式会社プライムポリマー)
・難燃剤1:ピロリン酸ピペラジン(FP2050、融点なし、株式会社ADEKA)
・難燃剤2:リン酸エステル(PX-200、融点96℃、大八化学工業株式会社)
・難燃剤3:ポリリン酸アンモニウム(TERRAJU C-30、融点なし、ブーデンハイム社)
・難燃剤4:水酸化マグネシウム(キスマ5AC、融点なし、協和化学工業株式会社)
・難燃剤5:ポリホウ酸ナトリウム(融点なし、株式会社SOUFA)
・難燃剤6:エチレンビス(ペンタブロモフェニル)(サイテックス8010、融点350℃、アルベマール社)
・難燃助剤:三酸化アンチモン(PATOX-M、融点なし、日本精鉱株式会社)
尚、「融点なし」は、押出機のシリンダー温度である210~260℃では溶融又は分解しないことを意味する。
・ナノセルロース A(CNF-10、平均繊維径30nm、中越パルプ工業)
・セルロースファイバー(SW-10、平均繊維径25μm、セライト社)
・ナノセルロース B(KY-100G、平均繊維径100nm、ダイセルファインケム)
[成分(D)]
・テルペンフェノール(YSポリスターT130(水酸基価60)、ヤスハラケミカル株式会社)
しかし、溶融しない難燃剤(難燃剤1、3~6)をナノセルロースと共に配合した樹脂組成物では、樹脂中への難燃剤の分散性は良好で、樹脂組成物の難燃性は向上した。
また、溶融する難燃剤(難燃剤2)でも、ナノセルロースを配合しない場合は、ポリプロプレンとの親和性が低く混練できなかったが(比較例10)、ナノセルロースを併用することにより、混錬可能となり、難燃性が向上した。
μmオーダーの寸法を有するセルロースファイバーを配合した樹脂組成物では、弾性率は向上するものの、樹脂組成物中への難燃剤の分散性が悪く、難燃性は向上しなかった。
本願のパリ優先の基礎となる日本出願明細書の内容を全てここに援用する。
Claims (10)
- 下記成分(A)~(C)を含む樹脂組成物。
(A)熱可塑性樹脂 35~96質量%
(B)難燃剤及び難燃助剤からなる群より選ばれる1種以上である難燃化成分 3~60質量%
(C)平均繊維径3~200nmのナノセルロース 0.5~20質量% - 前記(A)熱可塑性樹脂が、ポリオレフィン系樹脂及びポリスチレン系樹脂からなる群より選ばれる1種以上である、請求項1に記載の樹脂組成物。
- 前記(A)熱可塑性樹脂がポリプロピレンである、請求項1又は2に記載の樹脂組成物。
- 前記(A)熱可塑性樹脂がブロックポリプロピレンである、請求項1~3のいずれかに記載の樹脂組成物。
- 前記(A)熱可塑性樹脂のASTM規格D1238によるメルトフローレートが4~30g/10分である、請求項1~4のいずれかに記載の樹脂組成物。
- 前記(B)難燃化成分が、難燃剤及び難燃助剤を含む、請求項1~5のいずれかに記載の樹脂組成物。
- 前記(B)難燃化成分がリン系難燃剤である、請求項1~5のいずれかに記載の樹脂組成物。
- 前記(B)難燃化成分の融点が250℃以上である、請求項1~7のいずれかに記載の樹脂組成物。
- さらに(D)テルペン系樹脂を0.5~20質量%含む、請求項1~8のいずれかに記載の樹脂組成物。
- 請求項1~9のいずれかに記載の樹脂組成物を成形してなる成形体。
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