WO2005061626A1 - 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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- WO2005061626A1 WO2005061626A1 PCT/JP2004/018009 JP2004018009W WO2005061626A1 WO 2005061626 A1 WO2005061626 A1 WO 2005061626A1 JP 2004018009 W JP2004018009 W JP 2004018009W WO 2005061626 A1 WO2005061626 A1 WO 2005061626A1
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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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
- C08K5/55—Boron-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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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
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
Definitions
- the present invention relates to a flame-retardant thermoplastic resin composition containing a vegetable-derived resin and having excellent flame retardancy and practical physical properties.
- biodegradable resins such as polylactic acid have recently received particular attention and are being commercialized for various uses.
- applications of the biodegradable resin include applications that are assumed to be disposed of for a short period of time, such as containers and packaging and agricultural films, and housings for home appliances and OA equipment and automotive parts.
- applications such as high-performance applications that can maintain the initial characteristics for a long time.
- the polylactic acid resin has at least one type of flame retardant selected from a phosphorus compound, a hydroxide compound (also referred to as a metal hydrate, including aluminum hydroxide) and a silica compound.
- Patent Document 1 discloses a biodegradable resin composition using a system additive.
- Patent Document 1 exemplifies a phosphorus-based compound as a flame-retardant additive.
- a phosphorus-based compound is extremely useful for plasticizing resin and improving the fluidity of resin immediately. It is effective.
- the heat resistance (particularly, HDT) of the resin composition containing the phosphorus compound and the mechanical properties may be reduced.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-192925
- the technical problem of the present invention is to provide a flame-retardant thermoplastic resin composition containing a plant-derived resin which is excellent in flame retardancy and practical properties without using a halogen-based flame retardant. There is.
- a metal hydrate such as aluminum hydroxide is heated and kneaded as a flame retardant with a resin to obtain a mixture with the resin (hereinafter referred to as a resin composition).
- a resin composition a mixture with the resin
- an alkali metal-based substance for example, Na
- the resin is hydrolyzed and the molecular weight decreases.
- the molecular weight of the resin is reduced as described above, the fluidity of the resin composition is improved, but main physical properties such as flame retardancy are reduced.
- polylactic acid resins and their analogous polyester resins are easily hydrolyzed during kneading and use due to the effects of trace amounts of alkali metal substances, resulting in a decrease in molecular weight. Practical physical properties such as heat resistance, heat resistance and mechanical properties are reduced.
- Patent Document 1 discloses an example using hydroxide aluminum having a purity of 99.5% by mass or more as a hydroxide compound (also referred to as a metal hydrate).
- the total amount of impurities contained in the metal hydrate of Patent Document 1 is 0.5% by mass, and Fe 0,
- Patent Literature 1 typified by polylactic acid resin
- caustic soda indicating NaOH
- alkali metal-based substances contained in metal hydrates for example, converted to Na 0
- the present invention relates to a case where a metal hydrate is used for flame retardation of vegetable-derived resin (including polylactic acid resin having an ester bond in its molecular structure).
- a metal hydrate that reduces the amount of alkali metal substances to a certain level or less (especially 0.2% by weight or less), it provides excellent flame retardancy and practical physical properties (hydrolysis resistance).
- Such metal hydrates in which the ratio of the alkali metal substance is 0.2% by mass or less can be obtained by intentionally adjusting the concentration by performing treatments such as washing with water many times. Can be.
- the flame-retardant thermoplastic resin composition according to the first invention is a flame-retardant thermoplastic resin composition containing at least a plant-derived resin (A) and a flame retardant (B).
- the weight ratio of the flame-retardant thermoplastic resin composition to the total amount of the flame-retardant thermoplastic resin composition is represented by W being the mass% of the plant-derived resin (A) and X being the mass% of the flame retardant (B).
- the flame retardant (B) is characterized in that it comprises a metal hydrate having a content of alkali metal-based substance of not less than 90% by mass and not more than 0.2% by mass.
- the flame-retardant thermoplastic resin composition according to the second invention comprises a flame-retardant resin containing at least a plant-derived resin (A), a flame retardant (B), and a compound (C) having an aromatic ring.
- a thermoplastic resin composition containing at least a plant-derived resin (A), a flame retardant (B), and a compound (C) having an aromatic ring.
- the weight ratio of the flame-retardant thermoplastic resin composition to the total amount of the plant-derived resin (A) is W by mass, the flame retardant (B) is X by mass%, and the compound having the aromatic ring. (C)
- the flame retardant ( ⁇ ) is characterized in that it is composed of a metal hydrate having a content of alkali metal-based substance of not less than 90% by mass and not more than 0.2% by mass.
- the flame-retardant thermoplastic resin composition according to the third invention comprises at least a plant-derived resin ( ⁇ ), a flame retardant ( ⁇ ), a compound having an aromatic ring (C), and a crystal nucleating agent.
- the flame retardant (B) is characterized in that it comprises a metal hydrate having a content of alkali metal-based substance of not less than 90% by mass and not more than 0.2% by mass.
- the present invention realizes a flame-retardant thermoplastic resin composition containing a plant-derived resin that is excellent in flame retardancy and practical physical properties without using a halogen-based flame retardant. it can
- the present invention provides a flame retardant by first using a metal hydrate characterized in that the content of an alkali metal-based substance is 0.2% by mass or less as a flame retardant.
- a metal hydrate characterized in that the content of an alkali metal-based substance is 0.2% by mass or less as a flame retardant.
- This has a special effect on improving the properties.
- a compound having an aromatic ring a specific effect can be simultaneously obtained in the improvement of flame retardancy and fluidity.
- these compounds having an aromatic ring in combination with a crystal nucleating agent, the effect of further improving the flame retardancy can be obtained.
- FIG. 1 is a diagram showing the relationship between the concentration of an alkali metal-based substance and the total afterflame time of UL94V standard in Examples 1 to 3 and Comparative Examples 1 and 2.
- FIG. 2 is a graph showing the relationship between the concentration of an alkali metal-based substance and the number average molecular weight in Examples 1 to 3 and Comparative Examples 1 and 2.
- the present invention is characterized in that it is a flame-retardant thermoplastic resin composition containing at least a plant-derived resin (A) and a flame retardant (B).
- the plant-derived resin (A) in the present invention is not particularly limited as long as it is derived from a plant.
- a sugar contained in corn potato or the like may be used as a starting material.
- Polylactic acid-succinic acid can be used.
- Plant-derived resins based on succinic acid include esters such as polybutylene succinate.
- starch, a Polysaccharides such as mire, cellulose, cellulose esters, chitin, chitosan, gellan gum, cellulose containing olevoxyl group, starch containing carboxyl group, pectic acid, and alginic acid are also vegetable-derived fats.
- Polybutahydroxyalkanoate a polymer of hydroxybutyrate and Z or hydroxyvalerate synthesized by a microorganism (manufactured by Zeneki Co., trade name: Biopol, etc.), is not derived from a plant. Since it does not require petroleum resources, it can be used because it has the same significance as plant-based resins.
- Lignin is a dehydrogenated polymer of co-feryl alcohol and sinapyrcol alcohol contained in wood at 20-30%, and denatured polymers are also plant-derived fats. That is, a thermosetting resin using a plant material such as lignin, hemicellulose, or cellulose is also used.
- Petroleum-derived resin can also be mixed with plant-derived resin.
- Examples of petroleum-derived resins include polypropylene, polystyrene, ABS, nylon, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, urea resin, melamine resin, alkyd resin, acrylic resin, unsaturated polyester resin, Aryl phthalate resin, epoxy resin, silicone resin, cyanate resin, isocyanate resin, furan resin, ketone resin, xylene resin, thermosetting polyimide, thermosetting polyamide, styryl pyridine Resin, nitrile-terminated resin, addition-curable quinoxaline, addition-curable polyquinoxaline resin And an alloy of the thermosetting resin and the plant-derived resin.
- a thermosetting resin a curing agent or a curing accelerator required for a curing reaction can be used.
- the flame-retardant thermoplastic resin composition according to the first invention ie, the flame-retardant thermoplastic resin composition containing at least the vegetable-derived resin (A) and the flame retardant (B)
- the weight ratio of the flame retardant (B) to the total amount of is defined as X, X is 44.5% by mass.
- the content is within the range of ⁇ X ⁇ 70% by mass because flame retardancy and moldability are good.
- X is less than 44.5% by mass, the flame retardancy may be insufficient. X exceeds 70% by mass
- the flame-retardant thermoplastic resin composition according to the second invention ie, at least the plant-derived resin (A), the flame retardant (B), and the compound (C) having an aromatic ring) X
- the flame-retardant thermoplastic resin composition according to the second invention represents the weight ratio of the flame retardant (B) to the total amount of the flame-retardant thermoplastic resin composition.
- the flame retardancy may be insufficient.
- the flame-retardant thermoplastic resin composition according to the third invention ie, at least a plant-derived resin (A), a flame retardant (B), a compound having an aromatic ring (C), and
- the weight ratio of the flame retardant (B) to the total amount of the flame-retardant thermoplastic resin composition containing the nucleating agent (D) is X
- the X force is 29.5.
- the flame retardant (B) in the present invention is a metal hydrate having an alkali metal-based material content of 0.2% by mass or less
- a plant derived from a plant having an ester bond may be used.
- a resin for example, represented by a polylactic acid resin
- a flame retardant (B) are used in combination, a decrease in the molecular weight of the vegetable-derived resin is small (good hydrolysis resistance). Particularly preferred because of its excellent flame retardancy.
- Such metal hydrates include aluminum hydroxide, magnesium hydroxide, dosonite, calcium aluminate, hydrated gypsum, calcium hydroxide, zinc borate, barium metaborate, borax, Metal hydrates such as kaolin clay and calcium carbonate, metal hydrates whose surfaces are surface-treated with various organic substances such as epoxy resin and phenol resin, and metal hydrates obtained by solid solution of metal Are preferred. Further, among these, aluminum hydroxide is particularly preferable because of its high heat absorption effect and excellent flame retardancy.
- the flame-retardant thermoplastic resin composition of the present invention when the 50% by mass particle size of the metal hydrate is in the range of 0.5 ⁇ m or more and 20 ⁇ m or less, the flame-retardant thermoplastic resin composition of the present invention has It is more preferable because it has good dispersibility in the contained plant-derived resin and is excellent in the effect of improving flame retardancy and mechanical properties.
- a flame-retardant thermoplastic resin composition containing the same (a plant-derived resin and other additive
- the flame-retardant thermoplastic resin composition of the present invention comprises the following: a) The viscosity of the resin composition does not increase, and the moldability does not decrease. Furthermore, due to the increase in shear force during kneading and molding due to the increase in viscosity, anti-dripping agents (for example, polytetrafluoroethylene and PTFE) and mechanical properties (especially Organic and inorganic fibrous substances, which can be expected to improve the impact resistance, are not deteriorated, and sufficient flame retardancy and mechanical properties can be obtained.
- anti-dripping agents for example, polytetrafluoroethylene and PTFE
- mechanical properties especially Organic and inorganic fibrous substances, which can be expected to improve the impact resistance, are not deteriorated, and sufficient flame retardancy and mechanical properties can be obtained.
- the 50% by mass particle size of the metal hydrate is set to 20 ⁇ m or less, the surface properties of the flame-retardant thermoplastic resin composition containing the same are excellent, and irregularities are generated on the surface. The design is likely to deteriorate.
- the compound (C) having an aromatic ring in the present invention includes the plant-derived resin (A) when kneading or molding in combination with the plant-derived resin (A) in the present invention.
- the compound is not particularly limited as long as it is a compound having a lower melt viscosity than phenols, phenols, silicone conjugates, and boron compounds, which are excellent in thermal decomposition resistance and easily form a carbonized component (also referred to as a char). Compounds and the like are particularly preferred in terms of improving flame retardancy and fluidity.
- the phenols are not particularly limited as long as they do not volatilize or decompose at the kneading temperature or molding temperature of the resin, and are generally not limited to epoxy resin.
- the phenol resin used is available.
- phenol novolak resin cresol novolak resin, phenol xylene aralkyl type resin, phenol biphenol-lenar aralkyl type resin, bisphenol A type phenol resin, bisphenol F type phenol resin, bisphenol S Type phenol resin, dihydroxy ether type phenol resin of biphenyl isomer, naphthalene diol type phenol resin, phenol diphenyl ether aralkyl type resin, naphthalene-containing novolac resin, anthracene content
- phenols include biphenol, xylenol, bisphenol A, bisphenol F, bisphenol S, and catechol / catechol resin.
- catechol biphenyl-alkyl aralkyl, catechol xylene aralkyl, and the like obtained by copolymerizing catechol and aromatic derivatives can also be used.
- lignin or an analog thereof eg, lignophenols may be used.
- phenols are easily oxidized, it is more preferable to use the phenols in combination with a compound generally used as an antioxidant in applications requiring design properties.
- a compound in which the phenolic hydroxyl group in the structure of phenols is glycidylated or converted to ethylene oxide does not change to the quinone structure that causes the phenolic resin to be colored.
- Flame-retardant thermoplastic resin composition is particularly excellent in design
- the silicone conjugate is an organosilane containing an aromatic ring, and is branched or linear if it does not volatilize or decompose at the resin kneading temperature or molding temperature.
- the structure is not particularly limited.
- the silicone compound having a branched structure preferably contains a unit (T unit) represented by the formula RSiO! / ,.
- the silicone compound having a linear structure has a unit (D unit) represented by the formula R SiO and a simple compound represented by the formula R SiO.
- such a silicone conjugate is effective not only in improving flame retardancy and fluidity but also in improving impact resistance.
- such a silicone conjugated product has a structure represented by the following formula.
- R a , R b, and R e in the above formula requires a substituent having an aromatic ring which may be the same or different, and in addition, hydrogen, a hydroxyl group, and a carbon number. It may contain a substituent selected from 1 to 5 alkoxyl groups and alkyl groups. Further, m is preferably an integer of 0 or more and 20 or less, and n is preferably an integer of 0 or more and 29 or less. Further, the content of the substituent having an aromatic ring is more preferably at least 50 mol% based on all the substituents contained in the silicone conjugate.
- the content of the substituent having an aromatic ring contained in the mixture of silicone conjugates is determined by the total substitution contained in the mixture of silicone compounds. More preferably, it is 50 mol% or more based on the group. That is, when the aromatics content is 50 mol% or more, the flame retardancy is improved. Further, a silicone conjugate having low reactivity is preferable. The details of this reason are unknown. It is considered that when the epoxy resin is used in combination with a plant-derived resin, the flame-retardant thermoplastic resin composition of the present invention can prevent a decrease in fluidity with an increase in viscosity.
- the molecular weight of the silicone conjugate is more preferably in the range of 500 or more and 5000 or less. That is, when the molecular weight is 500 or more, the silicone conjugate does not volatilize or decompose at the resin kneading temperature or the molding temperature. When the molecular weight is 5,000 or less, the fluidity of the flame-retardant thermoplastic resin composition of the present invention is good.
- a borate ester containing an aromatic ring is particularly preferred.
- the structure of the borate ester is not particularly limited as long as it does not volatilize or decompose at the resin kneading temperature or molding temperature.
- the above borate having an aromatic ring may contain a polar group such as a phenolic hydroxyl group or a diamino group.
- a polar group such as a phenolic hydroxyl group or a diamino group.
- the following borate ester conjugates may be mentioned.
- n is preferably an integer of 1 or more and 10 or less.
- the above formula is intended to show an example of the structure of the borate ester conjugate, and is not particularly limited thereto.
- the weight ratio of the compound (C) having an aromatic ring to the total amount of the flame-retardant thermoplastic resin composition of the present invention is Y
- said Y is 0.5 mass%. % To 20% by mass or less is more preferable because the amount of metal hydrate used is reduced, and in addition to flame retardancy and fluidity, heat resistance is also excellent. If the weight ratio Y of the compound (C) having an aromatic ring is less than 0.5% by mass, the effect of improving flame retardancy and fluidity may be insufficient. Further, when the weight ratio Y of the compound (C) having an aromatic ring exceeds 20% by mass, heat resistance (in particular, HDT, which indicates a deflection temperature under load) may decrease.
- HDT which indicates a deflection temperature under load
- the compound (C) having an aromatic ring is composed of a vegetable-derived resin (A) and a flame retardant (B). It has been discovered that when further used in combination with the flame-retardant thermoplastic resin composition of the present invention, there is an excellent flame-retardant improvement effect that can be achieved not only with the fluidity improvement effect. Although the cause of this effect is not necessarily clear, carbides formed when the flame-retardant thermoplastic resin composition of the present invention containing the compound (C) having an aromatic ring is ignited (including molten resin) ) Is combined with a metal hydrate (including the generated metal oxide) as a main component of the flame retardant (B) to form a unique composite layer (carbide, molten resin, metal).
- this composite layer forms the moisture generated by the thermal decomposition of the metal hydrate and the decomposition gas (the decomposition component of the resin component in the resin composition). It is thought that the flame retardancy was improved as a result of forming a heat insulating layer that could expand by containing flammable gas) and efficiently block the heat of ignition. Further, it is assumed that the heat insulation layer has an effect of capturing the decomposition gas of the resin and suppressing the decomposition gas from diffusing to the outside and spreading the resin.
- a nucleating agent (D) to the flame-retardant thermoplastic resin composition of the present invention.
- the crystal nucleating agent (D) an inorganic crystal nucleating agent or an organic crystal nucleating agent can be used.
- inorganic crystal nucleating agents include clay minerals, calcium carbonate, boron nitride, synthetic silicic acid, silicates, silica, carbon black, zinc white, basic magnesium carbonate, quartz powder, glass fiber, glass powder, and kieselguhr. Dolomite powder, titanium oxide, zinc oxide, antimony oxide, barium sulfate, calcium sulfate, alumina, calcium silicate, boron nitride, and the like.
- the clay mineral refers to a hydrous silicate produced as a main component of the clay.
- specific examples of clay minerals include alophen, hissingelite, phylloate, neurophyllite, talc, pummo (also called my power) group, montmorillonite group, vermiculite, lyotadiite group, kaolin group, inokeic acid Salts and Norrigorskite group.
- organic crystal nucleating agent examples include (1) organic carboxylic acids, for example, octylic acid, toluic acid, heptanoic acid, pelargonic acid, lauric acid, myristic acid, palmitic acid, stearic acid, and vein.
- organic carboxylic acids for example, octylic acid, toluic acid, heptanoic acid, pelargonic acid, lauric acid, myristic acid, palmitic acid, stearic acid, and vein.
- alkali (earth) metal salts of organic carboxylic acids such as (Earth) metal salts and the like
- high molecular organic compounds having a carboxyl group metal salt for example, carboxyl group-containing polyethylene obtained by oxidizing polyethylene, and carboxyl group-containing polypropylene obtained by oxidation of polypropylene Copolymers of olefins such as ethylene, propylene, butene 1, etc.
- aliphatic carboxylic acid amides such as metal salts such as copolymers of styrene and maleic anhydride, such as oleic acid amide, stearic acid amide, erlic acid amide, behenic acid amide, Oleyl palmitoamide, N-stearyl erlic acid amide, N, N, monoethylene bis (stearoamide), N, N -Methylenebis (stearoamide), methylol.
- a compound having 3, 5 or more carbon atoms such as 3,3-dimethylbutene 1,3-methylbutene-1,3-methylpentene 1,3-methylhexene 1,3,5,5 trimethylhexene 1 -Branched ⁇ -olefins and polymers of bulcycloalkanes such as bulcyclopentane, bicyclocyclohexane, and bürnorbornane; (6) Organic compounds such as phosphoric acid or phosphorous acid and the like, (6) phosphoric acid or phosphorous acid and the like, polyalkylene glycols such as polyethylene glycol and polypropylene glycol, polyglycolic olenoic acids, Metal salts, examples Then, diphenyl phosphate, diphenyl phosphite, sodium bis (4 tertbutylbutyl) phosphate, sodium methylene phosphate (2,4tertbutylbutyl) sodium, etc .; (7) bis (p
- polyester resins represented by polylactic acid resins are sometimes hydrolyzed to reduce the molecular weight.
- a crystal nucleating agent consisting of a neutral substance, which does not promote hydrolysis of the polyester resin, is particularly preferably used.
- ester and amidy conjugates, which are derivatives thereof are more preferable as nucleating agents than nucleating agents having a carboxyl group.
- a derivative thereof such as an ester or an ethereal compound is more preferable as a crystal nucleating agent than a nucleating agent having a hydroxyl group.
- the organic crystal nucleating agent is compatible or finely dispersed with the resin in a molten state at a high temperature in injection molding or the like, and precipitates or separates in a molding and cooling stage in a mold to act as a crystal nucleus.
- Organic crystal nucleating agents are preferably used.
- the inorganic crystal nucleating agent functions efficiently as a crystal nucleus when the inorganic substance of the fine particles is highly dispersed in the resin.
- the surface of the inorganic crystal nucleating agent is subjected to a compatibilizing treatment (refers to a coating treatment using a fat compound having a compatibilizing action, or an ion exchange treatment or a surface treatment with a coupling agent).
- the inorganic crystal nucleating agent whose surface has been subjected to a miscible treatment can enhance the interaction with the resin, improve dispersibility, and prevent aggregation of the nucleating agent.
- a masterbatch in which a crystal nucleating agent (D) is dispersed in advance in a plant-derived resin such as polylactic acid resin may be used.
- the crystal nucleating agent (D) when the weight ratio to the total amount of the flame-retardant thermoplastic resin composition of the present invention is Z, Z is more than 0.05% by mass and 20% or more.
- the content is not more than mass%, the impact resistance is good, and the crystallization speed of crystalline resin such as polylactic acid resin is increased, so that productivity can be improved. That is, when the weight ratio Z of the crystal nucleating agent (D) is more than 0.05% by mass, The production proceeds quickly, and the production speed is improved. Power!
- the weight ratio Z of the nucleating agent (D) is set to 20% by mass or less, crack growth based on the inorganic nucleating agent can be suppressed, particularly when an inorganic nucleating agent is used.
- the impact resistance of the flame-retardant thermoplastic resin composition of the present invention is improved.
- the charcoal including molten resin formed when the resin composition containing the compound (C) having an aromatic ring is ignited
- the composite layer composed of metal hydrates forms moisture generated by thermal decomposition of metal hydrates and decomposition gas (flammable gas) of resin components in the resin group.
- the clay mineral expands to form a heat insulating layer, the added clay mineral prevents the water and the decomposition gas from volatilizing inside the composition and from the outside, resulting in more efficient compounding. It is thought that the fire resistance was greatly improved because the layer expanded and the heat insulation was significantly increased.
- the formed heat-insulating layer has an extremely high effect of suppressing the volatilization of the decomposition gas of the resin to the outside, it is assumed that the spread of the resin is further suppressed.
- An anti-drip agent (E) may be used in combination with the flame-retardant thermoplastic resin composition of the present invention.
- the anti-drip agent (E) include organic fibers such as polytetrafluoroethylene (PTFE) and acrylic-modified PTFE.
- PTFE polytetrafluoroethylene
- acrylic-modified PTFE acrylic-modified PTFE.
- the weight ratio of the flame-retardant thermoplastic resin composition of the present invention to the total amount is preferably 1% by mass or less. When the weight ratio of these anti-drip agents is 1% by mass or less, the granulation property is good when forming pellets.
- High-strength fibers (F) include polyamide fibers such as aramid fibers and nylon fibers, polyester fibers such as polyarylate fibers and polyethylene terephthalate fibers, ultra-high-strength polyethylene fibers, polypropylene fibers, carbon fibers, metal fibers, glass fibers, etc.
- Polyamide fibers and polyarylate fibers are aromatic compounds, and have higher heat resistance and higher strength than other fibers, and are light-colored, so that their design is not impaired even when added to resin. It is particularly desirable because of its low specific gravity.
- the shape of the high-strength fiber (F) is a polygon in which the cross section of the fiber is not circular, an indeterminate shape, or a shape having irregularities, and has a high aspect ratio or a small fiber diameter. Since the bonding area with the resin increases, the decoupling effect between the fiber and the matrix increases, and the impact relaxation effect by pulling out the fiber also increases, thereby improving the impact strength.
- fibers with irregularities on the surface of the fiber fibers with a kind of wedge shape in which both ends of the fiber are thicker than the center, fibers with a constriction on a part of the fiber, or non-linear
- a fiber having a crimped shape By using a fiber having a crimped shape, friction at the time of pulling out the fiber is increased, and impact resistance is improved.
- the high-strength fiber (F) may be subjected to a surface treatment, if necessary, in order to increase the affinity with the resin as the base material or the entanglement between the fibers.
- a surface treatment method a treatment with a coupling agent such as a silane or titanate, an ozone or plasma treatment, and a treatment with an alkyl phosphate ester type surfactant are effective.
- a treatment method that can be generally used for surface modification of a filler without particular limitation is possible.
- the average fiber length of the high-strength fiber (F) is in the range of 1 mm or more and 10 mm or less, it is particularly effective for improving impact resistance.
- the average fiber length of the high-strength fiber (F) is lmm or more, sufficient impact resistance can be obtained because the energy absorption effect by pulling out the fiber is high. It is preferable to set the average fiber length of the high-strength fiber (F) to 10 mm or less because the moldability is good.
- the weight ratio of the high-strength fiber (F) to the total amount of the flame-retardant thermoplastic resin composition of the present invention should be 10% by mass or less. Preferred because of its particularly excellent impact resistance and moldability.
- the plant fiber refers to a fiber derived from a plant, and specific examples include fibers obtained from wood such as wood, kenaf, bamboo, and hemp. You can. These fibers preferably have an average fiber length of 10 mm or less.
- pulp and the like obtained by delignifying and de-lectinizing these plant fibers are particularly preferable because they are not easily decomposed or discolored due to heat and have less degradation of ivy.
- the high-strength fiber (F) and the organic fiber such as the above-mentioned vegetable fiber act as a crystal nucleating agent for the resin, and the heat resistance of the flame-retardant thermoplastic resin composition of the present invention (In particular, it refers to HDT> because of its load deflection temperature.)
- a known soft component can be used as a technique for improving impact resistance.
- these flexible components include the following substances, which are particularly preferred from plant-derived substances.
- a group consisting of a polyester segment, a polyether segment, and a polyhydroxycarboxylic acid segment A copolymer having a selected polymer block, a polylactic acid segment, an aromatic polyester segment, and a block copolymer in which a polyalkylene ether segment are bonded to each other.
- Block copolymer consisting of polylactic acid segment and polyprolatatatone segment, polymer mainly composed of unsaturated carboxylic acid alkyl ester units, polybutylene succinate, polyethylene succinate, polycarbose ratatone, polyether Aliphatic polyesters such as tylene adipate, polypropylene adipate, polybutylene adipate, polyhexamethylene adipate, polybutylene succinate adipate, polyethylene glycol and Ester, polyglycerin acetate, epoxidized soybean oil, epoxidized linseed oil, epoxidized linseed oil fatty acid butyl, adipic aliphatic polyester, tributyl acetylquenate, acetyl ricinoleate, sucrose fatty acid ester, sorbitan Plasticizers such as fatty acid esters, dialkyl adipates, and alkyl phthalyl alkyl glycolate
- the plant-derived resin has an ester bond in the structure, it is generally easily hydrolyzed, and thus a known hydrolysis resistance inhibitor may be used in combination.
- a hydrolysis inhibitor a compound having reactivity with active hydrogen in vegetable-derived resin can be used.
- the active hydrogen include hydrogen in a carboxyl group, a hydroxyl group, an amino group, an amide group and the like in vegetable-derived resin.
- Compounds reactive with these active hydrogens For example, a carbodiimide conjugate, an isocyanate conjugate, or an oxazoline compound described in Patent Document 1 can be applied.
- a carbodiimide compound having an aliphatic carbon chain can also be used.
- a compound that promotes carbonization of resin components (for example, a carbonization promoting catalyst can be used) can be used as the flame retardant auxiliary.
- examples of such compounds include, but are not limited to, compounds such as zinc molybdate and zinc stannate, and compounds obtained by coating these compounds on talc surface, for example.
- flame retardants may be appropriately added to the flame-retardant thermoplastic resin composition of the present invention, if necessary.
- These flame retardants include nitrogen-based flame retardants and phosphorus-based flame retardants.
- nitrogen-based flame retardant include melamine and isocyanuric acid conjugate.
- examples of the phosphorus-based flame retardant include red phosphorus, a phosphoric acid compound, an organic phosphorus compound, and the like.
- the addition amount of the above-mentioned flame retardant and other flame retardants may be small, and other physical properties such as moisture resistance, heat resistance, and mechanical properties are deteriorated. Can be suppressed.
- the above-described flame retardant aids and other flame retardants may be used after vigorously treating high-strength fibers or plant-derived fibers.
- the flame-retardant thermoplastic resin composition of the present invention may contain, if necessary, an inorganic filler, a reinforcing material, a coloring agent (such as titanium oxide), a stabilizer (a radical scavenger, an antioxidant). Agents, fungicides, fungicides, etc.).
- a coloring agent such as titanium oxide
- a stabilizer a radical scavenger, an antioxidant
- Agents, fungicides, fungicides, etc. As the inorganic filler, silica, alumina, sand, clay, slag, and the like can be used. Needle-like inorganic substances can be used as the reinforcing material.
- antibacterial agents silver ions, copper ions, zeolites containing these, and the like can be used.
- the flame-retardant thermoplastic resin composition of the present invention as described above can be used for the production of electric products such as housings for electric appliances by injection molding, film molding, blow molding, foam molding, or the like. It can be processed into molded products for electronic devices, building materials, automotive parts, daily necessities, medical applications, agricultural applications, etc.
- the method of mixing the various components of the flame-retardant thermoplastic resin composition of the present invention is not particularly limited, and a known mixer such as a tumbler, a ribbon blender, a single-shaft or twin-shaft kneader may be used. Mixing with an extruder, melt mixing with an extruder, a roll, or the like.
- the method for molding the flame-retardant thermoplastic resin composition of the present invention is not particularly limited.
- the method for producing ordinary electric and electronic equipment products, such as known injection molding, injection 'compression molding, compression molding method, etc.' A molding method required for molding can be used.
- the temperature at the time of melt mixing and molding can be set within a range not lower than the melting temperature of the resin as a base material and not causing thermal degradation of vegetable fibers or plant-derived resin.
- a vegetable-derived resin, a metal hydrate, a compound having an aromatic ring, a crystal nucleating agent, an anti-drip agent, a high-strength fiber, and a soft component shown in 2 were used.
- Kenaf fibers Various fibers Kenaf fiber
- thermoplastic resin composition shown in Examples (sometimes referred to as “Example") and Comparative Example was kneaded with a kneader (2nd set) such that the temperature of the composition was about 190 ° C. (Using a shaft type), and melt-mixed to prepare pellets for injection molding.
- the mold temperature was set to 25 ° C, and molded bodies having a plate thickness of 1.6 mm and 3.2 mm were produced by an injection molding machine, respectively. Next, these molded bodies were heated at 100 ° C. for 4 hours to crystallize the resin, and then used as various evaluation samples. Incidentally, the barrel temperature of the injection molding machine was set at 190 ° C or 200 ° C.
- mold temperature was set to 110 ° C
- molded products of 1.6 mm and 3.2 mm in thickness were respectively formed by an injection molding machine, and various evaluations were made.
- the barrel temperature of the injection molding machine was set at 190 ° C or 200 ° C.
- the mold temperature was set to 100 ° C
- the barrel temperature of the injection molding machine was set to 190 ° C
- the injection pressure was set to 157MPa
- the injection speed was set to 100mm / s. .
- the length of the molded body was measured and used as an index of fluidity.
- test piece obtained by casting the sample molded in (3) a test (weight 2.75 J, swing-up angle 150 °) in accordance with JIS K 7110 Annex 1 was performed, and the Izod impact value was calculated. It was an index of sex.
- the molecular weight in terms of polystyrene was determined by gel permeation chromatography (GPC) for the vegetable-derived resin (eg, polylactic acid resin) in which the pellet obtained in (1) was immersed and dissolved in black-mouthed form. was calculated as an index of hydrolysis resistance.
- GPC gel permeation chromatography
- Mn number-average molecular weight
- the resin composition obtained by mixing 0.5% by mass of PTFE was melt-mixed using a kneader to form pellets. The temperature of the kneader was set such that the temperature of the resin composition was about 190 ° C.
- the obtained pellets were dried at 100 ° C for 7 hours or more, and then each evaluation sample was molded using an injection molding machine with a barrel temperature set to 190 ° C.
- Example 1 Various evaluation samples were prepared in the same manner as in Example 1 except that the resin compositions having the compositions shown in Tables 4 to 10 were used. Tables 4 to 10 show the evaluation results. In addition, the relationship between the concentration of the alkali metal-based substance in each of the evaluation samples of Examples 1 to 3 and Comparative Examples 1 and 2 and the total residual flame time and the number average molecular weight of the UL94V standard were plotted. Indicated.
- Example 4 Comparative Example 4
- Example 7 Example 8
- Example 9 Plant-Derived ⁇ Poly-shelf 1 50 50 45 40 30 ⁇ Hydrate 7M change aluminum 1 44.5 44.5 44.5 44.5 44.5 Compound having aromatic ring Phenols 1 5 5 5 5
- Example 12 Example 14
- Example 15 Plant-based resin TE-4000 40
- 40 Metal hydrate Aluminum hydroxide 1 45 45 45 45
- Polyarylate fiber 1 (* 12 / m)-5-Polyarylate fiber 2 (024 / m)--5 Flexible component PD-150 ⁇ Single crystal nucleating agent Talc 5 5 5 Kenaf fiber---Glass fiber--- Flame retardant UL941.6mm V-0 V-0 V-1
- Example 14 Example 16 Example 17 Example 18 Example 19 Example 20
- Example 21 Example 22
- Example 23 Plant-based resin TE-4000 40 35 35 30 30 25 25 30 30
- Metal hydrate Aluminum hydroxide 1 45 45 Compound having an aromatic ring f; t-nos 1 (f; t-nol resin) 5 5 5 5 5 5 5 5 5 1-Anti-drip agent PTFE--1-- ----Impact resistant fiber Polyamide fiber (012)--One------Polyarylate fiber 1 ( ⁇ 12 / ⁇ 5 5 5 5 5 5 5 5 5 5 5 5
- Polyarylate fiber 2 (24 m)--One- One---One Flexible component PD-150 5 5 5 5 10 10 10 10
- the flame-retardant thermoplastic resin composition of the present invention is more excellent in flame retardancy than the resin compositions of Comparative Examples in which the prior art is used. You can see that. Further, it can be seen that the flame-retardant thermoplastic resin composition of the present invention using the compound having an aromatic ring in combination has good fluidity as well as flame retardancy. It is clear that the combined use of a crystal nucleating agent further improves the flame retardancy. Furthermore, it can be seen that when a high-strength fiber is used in combination, a flame-retardant thermoplastic resin composition having good impact resistance and heat resistance that can be obtained not only in flame retardancy and fluidity, but also in strength S can be obtained.
- Example 1 and Comparative Example 3 the plant-derived resin (A) and the flame retardant (B) By using a metal hydrate with an alkali metal content of 0.2% by mass or less and using a compound (C) having an aromatic ring in combination, the fluidity that is not only excellent in flame retardancy but also not good A good flame-retardant thermoplastic resin composition is obtained.
- Example 7 of the present invention shown in Table 6 and Example 4 or Comparative Example 4 The caloric comparison between Example 7 of the present invention shown in Table 6 and Example 4 or Comparative Example 4 and the comparative power of Example 7 of the present invention shown in Table 7 and Examples 10 and 11 were also clear.
- a metal hydrate having a content of an alkali metal-based substance of 0.2% by mass or less is used as a vegetable-derived resin (A) and a flame retardant (B).
- C) and the nucleating agent (D) the flame retardancy of the flame-retardant thermoplastic resin composition of the present invention can be further enhanced. That is, the combined use of the compound (C) having an aromatic ring and the nucleating agent (D) has a significant synergistic effect of improving the flame retardancy.
- Example 8 and Example 12 of the present invention shown in Table 7 and Example 7 the alkali metal-based material was used as the plant-derived resin (A) and the flame retardant (B).
- the alkali metal-based material was used as the plant-derived resin (A) and the flame retardant (B).
- a metal hydrate having a content of 0.2% by mass or less and using a high-strength fiber (F) in addition to the compound (C) having an aromatic ring and the nucleating agent (D)
- the impact resistance of the flame-retardant thermoplastic resin composition of the present invention is specifically improved.
- Example 9 of the present invention and Example 8 shown in Table 6 the content of the alkali metal-based material as the plant-derived resin (A) and the flame retardant (B) was 0%.
- the present invention By using a metal hydrate of not more than 2% by mass and using a soft component in combination with the compound (C) having an aromatic ring, the nucleating agent (D) and the high-strength fiber (F), the present invention The impact resistance of the flame-retardant thermoplastic resin composition is improved.
- the use of a metal hydrate having a small particle size as the flame retardant (B) further enhances the flame retardancy of the flame-retardant thermoplastic resin composition of the present invention. improves.
- the flame-retardant thermoplastic resin composition of the present invention can be used for electrical and electronic equipment, building materials, and automotive parts by injection molding, film molding, blow molding, foam molding, or the like. Processed into molded products for daily necessities, medical uses, agricultural uses, toys, and recreational uses
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Abstract
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CN200480041588.XA CN1914279B (zh) | 2003-12-19 | 2004-12-03 | 阻燃热塑性树脂组合物 |
US10/583,463 US7790069B2 (en) | 2003-12-19 | 2004-12-03 | Flame-retardant thermoplastic resin composition |
JP2005516441A JP4894263B2 (ja) | 2003-12-19 | 2004-12-03 | 難燃性熱可塑性樹脂組成物 |
US12/845,077 US8202450B2 (en) | 2003-12-19 | 2010-07-28 | Flame retardant thermoplastic resin composition |
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JP2006016447A (ja) * | 2004-06-30 | 2006-01-19 | Toray Ind Inc | 樹脂組成物ならびにそれからなる成形品 |
JP2006342289A (ja) * | 2005-06-10 | 2006-12-21 | Mitsubishi Plastics Ind Ltd | 樹脂組成物及び成形体 |
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JP5022234B2 (ja) * | 2006-01-05 | 2012-09-12 | 三菱樹脂株式会社 | 難燃性積層体 |
JP2007262295A (ja) * | 2006-03-29 | 2007-10-11 | Unitika Ltd | 熱伝導性樹脂組成物およびそれからなる成形体 |
CN101130627B (zh) * | 2006-08-23 | 2012-05-02 | 富士施乐株式会社 | 树脂组合物、树脂成型体、壳体、树脂成型体制造方法和树脂成型体的再循环方法 |
WO2008026513A1 (fr) * | 2006-08-31 | 2008-03-06 | Ube Industries, Ltd. | Composition réactive thermofusible et article moulé l'utilisant |
JP5463670B2 (ja) * | 2006-10-10 | 2014-04-09 | 日本電気株式会社 | 熱可塑性樹脂組成物 |
JP2010529284A (ja) * | 2007-06-11 | 2010-08-26 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | ポリ(ヒドロキシアルカン酸)及びそれを使った物品 |
JP2009013232A (ja) * | 2007-07-02 | 2009-01-22 | Kaneka Corp | 高熱伝導性熱可塑性樹脂組成物 |
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JP2009270087A (ja) * | 2008-04-08 | 2009-11-19 | Kao Corp | ポリ乳酸樹脂組成物 |
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JP2009270089A (ja) * | 2008-04-08 | 2009-11-19 | Kao Corp | ポリ乳酸樹脂組成物 |
CN101990565B (zh) * | 2008-04-08 | 2015-08-12 | 日本电气株式会社 | 聚乳酸树脂组合物 |
KR101260590B1 (ko) * | 2008-07-10 | 2013-05-06 | 닛본 덴끼 가부시끼가이샤 | 폴리락트산 수지 조성물 및 폴리락트산 수지 성형체 |
WO2010004799A1 (ja) | 2008-07-10 | 2010-01-14 | 日本電気株式会社 | ポリ乳酸樹脂組成物およびポリ乳酸樹脂成形体 |
US9550876B2 (en) | 2008-07-10 | 2017-01-24 | Nec Corporation | Polylactic acid resin composition and polylactic acid resin molded body |
JP2010202847A (ja) * | 2009-03-06 | 2010-09-16 | Nec Corp | 難燃性ポリ乳酸系樹脂組成物 |
JP2011132452A (ja) * | 2009-12-25 | 2011-07-07 | Fujifilm Corp | 成形材料、成形体、及びその製造方法、並びに電気電子機器用筐体 |
CN102173668A (zh) * | 2011-01-24 | 2011-09-07 | 福建省新创化建科技有限公司 | 利用选矿业尾矿渣制造建筑板材的制备方法 |
WO2015098621A1 (ja) * | 2013-12-26 | 2015-07-02 | 花王株式会社 | 制振材料 |
US9721555B2 (en) | 2013-12-26 | 2017-08-01 | Kao Corporation | Vibration damping material |
Also Published As
Publication number | Publication date |
---|---|
JP5647076B2 (ja) | 2014-12-24 |
US20080071015A1 (en) | 2008-03-20 |
JPWO2005061626A1 (ja) | 2007-07-12 |
US7790069B2 (en) | 2010-09-07 |
CN1914279B (zh) | 2010-05-05 |
US8202450B2 (en) | 2012-06-19 |
CN1914279A (zh) | 2007-02-14 |
JP4894263B2 (ja) | 2012-03-14 |
US20100311886A1 (en) | 2010-12-09 |
JP2011168798A (ja) | 2011-09-01 |
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