KR20170030127A - Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same - Google Patents
Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same Download PDFInfo
- Publication number
- KR20170030127A KR20170030127A KR1020150127000A KR20150127000A KR20170030127A KR 20170030127 A KR20170030127 A KR 20170030127A KR 1020150127000 A KR1020150127000 A KR 1020150127000A KR 20150127000 A KR20150127000 A KR 20150127000A KR 20170030127 A KR20170030127 A KR 20170030127A
- Authority
- KR
- South Korea
- Prior art keywords
- group
- carbon atoms
- polycarbonate resin
- polysiloxane
- resin composition
- Prior art date
Links
Classifications
-
- 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
- C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/18—Block or graft polymers
- C08G64/186—Block or graft polymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
- C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
Abstract
Description
The present invention relates to an automotive interior polysiloxane-polycarbonate resin composition having improved light resistance and a molded article comprising the same. More specifically, the present invention relates to an automotive interior polysiloxane-polycarbonate resin composition having excellent light resistance and excellent physical properties such as rigidity, fluidity, impact resistance and heat resistance, The present invention relates to a molded article.
In recent years, there has been an increasing demand for development of lightweight and diverse functional materials in the fields of automobiles, electrical and electronic components and industrial materials, and the utilization of resins such as plastic parts is increasing in conventional metal and crosslinked rubber parts.
Particularly, the installation position of parts using polycarbonate resin such as navigation and audio due to the change of design trend of automobile interior parts is changing. The frequency of exposure to an external light source such as sunlight is further increased by the change of the mounting position.
Accordingly, there has been an attempt to improve the discoloration and yellowing phenomenon when the conventional resin is used. In the case of parts with discoloration and yellowing, deformation of the resin structure occurs, which may be susceptible to deformation and impact in the long term.
In order to compensate for this, attempts have been made to enhance the light resistance of polycarbonate resins using additives such as anti-ultraviolet. However, in this case, gas generation at the time of injection due to the low boiling point of the additives, surface defects of the injection molded article and the rigidity and impact resistance of the polycarbonate It is not possible to satisfy the productivity and mechanical properties required for use as a vehicle interior material.
Therefore, it is urgent to develop a material satisfying both light resistance, mechanical properties and injection moldability at the same time by solving such problems, but no disclosure has yet been made on this.
An object of the present invention is to provide a polysiloxane-polycarbonate resin composition which is excellent in physical properties such as light resistance, rigidity, flowability, impact resistance and heat resistance, To provide a polycarbonate resin composition.
Another object of the present invention is to provide a molded article comprising the automotive interior polysiloxane-polycarbonate resin composition having improved light resistance.
The above and other objects of the present invention can be achieved by the present invention described below.
One aspect of the present invention is a resin composition comprising 100 parts by weight of a polysiloxane-polycarbonate resin comprising a repeating unit represented by the following formula (1) And 1 to 5 parts by weight of an acrylic copolymer. The present invention relates to a polysiloxane-polycarbonate resin composition for interior decoration for automobiles having improved light resistance,
[Chemical Formula 1]
(In the formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
In one embodiment, the polysiloxane-polycarbonate resin can be prepared by reacting a hydroxy-terminated siloxane of Formula 1 with a polycarbonate having a repeating unit of Formula 2:
[Chemical Formula 1]
(In the formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
(2)
(In the formula (2)
R 4 is an aromatic hydrocarbon group having 6 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms substituted with an alkyl group, a cycloalkyl group, an alkenyl group, an alkoxy group, a halogen atom or a nitro group.
In one embodiment, the weight ratio of the hydroxy end siloxane to the polycarbonate can be from 50 to 99: 50 to 1.
In one embodiment, the acrylic copolymer is selected from the group consisting of polymethyl methacrylate, polybutyl methacrylate, polydecyl methacrylate, polydodecyl methacrylate, and polytridecyl methacrylate, can do.
In one embodiment, the acrylic copolymer may include a copolymer having a weight average molecular weight of 1,000 to 10,000.
In one embodiment, 10 to 100 parts by weight of the polycarbonate resin may be further added to 100 parts by weight of the polysiloxane-polycarbonate resin.
In one embodiment, the resin composition further comprises, alone or in combination of two or more additives, such as antioxidants, lubricants, UV stabilizers, compatibilizers, pigments, dyes, inorganic additives, coupling agents, impact modifiers, antistatic agents, .
Another aspect of the present invention relates to a molded article comprising the automotive interior polysiloxane-polycarbonate resin composition having improved light fastness.
The automotive interior polysiloxane-polycarbonate resin composition having improved light resistance according to the present invention is excellent in light resistance and has excellent physical properties such as rigidity, fluidity, impact resistance and heat resistance, and can be widely used in the fields of electric and electronic materials, In particular, there is an effect that it can be used as an optimal automotive interior material.
The present invention relates to an automotive interior polysiloxane-polycarbonate resin composition having improved light resistance, which contains a polysiloxane-polycarbonate resin and an acrylic copolymer in a specified ratio.
Hereinafter, each component and content thereof will be described in detail.
(A) Polysiloxane-polycarbonate resin
The polysiloxane-polycarbonate resin may include a repeating unit represented by the following formula (1): < EMI ID =
[Chemical Formula 1]
In Formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
The polysiloxane-polycarbonate resin may be prepared by reacting a hydroxy-terminated siloxane of formula 1 with a polycarbonate having a repeating unit of formula 2:
[Chemical Formula 1]
In Formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
(2)
In Formula 2,
R 4 is an aromatic hydrocarbon group having 6 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms substituted with an alkyl group, a cycloalkyl group, an alkenyl group, an alkoxy group, a halogen atom, or a nitro group.
In the polysiloxane-polycarbonate resin, the content ratio of the hydroxy-terminated siloxane: polycarbonate block is preferably 50 to 99: 50 to 1 as a weight ratio. If the relative content of the siloxane moiety in the resin is less than the above range, the light resistance and the low temperature impact strength may be lowered. On the other hand, if the relative content is less than the above range, the relative content of the polycarbonate moiety in the resin decreases, The cost may increase.
The polysiloxane-polycarbonate resin may have a viscosity average molecular weight (Mv) of, for example, from 15,000 to 200,000, for example, from 15,000 to 70,000 when measured in a methylene chloride solution. If the viscosity average molecular weight of the polysiloxane-polycarbonate resin is less than 15,000, the mechanical properties may be significantly deteriorated. On the other hand, if the viscosity average molecular weight exceeds 200,000, the melt viscosity may increase, which may cause problems in processing the resin.
The polysiloxane-polycarbonate resin may be a homopolymer, a copolymer, or a blend thereof. The polysiloxane-polycarbonate resin may be partially or wholly substituted with an ester precursor, for example, an aromatic polyester-carbonate resin obtained by polymerization reaction in the presence of a bifunctional carboxylic acid, or a copolycarbonate copolymerized with a silicone resin .
If the content of the polysiloxane-polycarbonate resin in the resin composition according to one embodiment of the present invention is too small, sufficient light resistance can not be exhibited and the low temperature impact strength may be lowered. On the contrary, if the content is too high, The physical properties such as strength may be lowered.
(B) an acrylic copolymer
The acrylic copolymer may be a polymer which is produced by mixing one kind alone or two or more kinds in an alkyl acrylate monomer or an alkyl methacrylate monomer. For example, they may be used alone or as a mixture of two or more of them, such as polymethyl methacrylate, polybutyl methacrylate, polydecyl methacrylate, polydodecyl methacrylate, or polytridecyl methacrylate. More preferably, it may include, for example, polymethyl methacrylate.
The acrylic copolymer may have a weight average molecular weight of 1,000 to 10,000, for example, 2,000 to 9,000, for example, 3,000 to 8,000. When the weight average molecular weight is less than 1,000, the impact strength of the final product is lowered. On the contrary, when the weight average molecular weight is more than 10,000, the fluidity is lowered and there is a problem in processing.
In one embodiment of the present invention, for example, the acrylic copolymer may be prepared by copolymerizing 40 to 75% by weight of an alkyl acrylate, 15 to 40% by weight of an aromatic vinyl compound and 3 to 20% by weight of a vinyl cyan compound .
The alkyl acrylate may be used alone or in admixture of two or more thereof in methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate and butyl (meth) acrylate. However, the type is not limited thereto as long as it is for realizing the object of the present invention.
If the amount of the alkyl acrylate is less than 40 wt%, the chemical resistance and scratch resistance are undesirably low. On the other hand, when the amount of the alkyl acrylate is more than 75 wt%, problems such as yellowing may occur.
The aromatic vinyl compound may be a single compound or a mixture of two or more compounds selected from styrene, alkylstyrenes having 1 to 10 carbon atoms, and halogen-substituted styrenes. However, the type is not limited thereto as long as it is for realizing the object of the present invention.
When the content of the aromatic vinyl compound is less than 15% by weight, the scratch resistance and the impact strength are lowered, which is undesirable. Conversely, when the aromatic vinyl compound is more than 40% by weight, .
The vinyl cyan compound may be contained in acrylonitrile, methacrylonitrile, ethacrylonitrile, or the like, or a mixture of two or more thereof. However, the type is not limited thereto as long as it is for realizing the object of the present invention.
When the amount of the vinyl cyan derivative is less than 3% by weight, the chemical resistance, the scratch resistance and the impact strength are lowered. On the other hand, when the vinyl cyan derivative is more than 20% by weight, yellowing occurs.
The acrylic copolymer may be produced, for example, by suspension polymerization or bulk polymerization. For example, continuous bulk polymerization is preferred when manufacturing costs are taken into account. Also, when polymerization is carried out in an aqueous phase such as emulsion polymerization or suspension polymerization, when the content of the vinyl cyan derivative is high, acrylonitrile as a hydrophilic monomer generates a large amount of homopolymer in the aqueous phase and yellowing of the resin occurs. In bulk polymerization, Even if the content of the derivative is increased to a large extent, the generation of homopolymer is small and the degree of yellowing can be reduced, and the chemical resistance and impact resistance can be improved.
The acrylic copolymer may be contained in an amount of 1 to 5 parts by weight, for example, 1.5 to 4.5 parts by weight, for example, 2 to 4 parts by weight, based on 100 parts by weight of the polysiloxane-polycarbonate resin of the present invention. If the content of the acrylic copolymer is less than 1 part by weight, the polycarbonate resin composition may have poor vulcanization resistance and fluidity and poor workability, and when the content of the acrylic copolymer exceeds 5 parts by weight, The scratch resistance is lowered and mechanical properties and impact properties of the resin composition are lowered, and a splay phenomenon may occur on the surface of the product at the time of injection.
Polycarbonate resin
The polysiloxane-polycarbonate resin composition of the present invention may further contain polycarbonate resin in the same amount as the maximum polysiloxane-polycarbonate resin for improving physical properties such as fluidity, heat resistance and impact strength at room temperature.
As the polycarbonate resin that can be included in the resin composition of the present invention, an aromatic polycarbonate resin is preferable. However, as long as the technical idea of the present invention can be realized, the type thereof is not particularly limited thereto, and for example, a thermoplastic aromatic polycarbonate resin commonly used in the art can be used.
The aromatic polycarbonate resin may be prepared from a divalent phenol, a carbonate precursor, a molecular weight modifier, and the like. The dihydric phenol may be one of the monomers constituting the aromatic polycarbonate resin, and may be represented by the following formula (3).
(3)
In Formula 3,
X is an alkylene group, a linear, branched or cyclic alkylene group having no functional group, or a linear, branched or cyclic alkylene group containing a functional group such as sulfide, ether, sulfoxide, sulfone, ketone, naphthyl, Lt; / RTI > Preferably, X is a linear, branched or cyclic alkylene group having 1 to 10 carbon atoms and 3 to 6 carbon atoms.
R 1 and R 2 independently represent a hydrogen atom, a halogen atom, or an alkyl group, for example, a linear, branched or cyclic alkyl group having from 1 to 20 carbon atoms and having from 3 to 20 (preferably from 3 to 6) carbon atoms.
n and m independently represent an integer of 0 to 4;
Non-limiting examples of the dihydric phenols include bis (4-hydroxyphenyl) methane, bis (4-hydroxyphenyl) phenylmethane, bis (4- hydroxyphenyl) naphthylmethane, bis Ethyl-1,1-bis (4-hydroxyphenyl) propane, 1-phenyl-1, Bis (4-hydroxyphenyl) ethane, 1-naphthyl-1,1-bis (4-hydroxyphenyl) (4-hydroxyphenyl) decane, 2-methyl-1,1-bis (4-hydroxyphenyl) propane and 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) Bisphenol A can be preferably used.
The carbonate precursor is another monomer constituting the aromatic polycarbonate resin, and examples thereof include carbonyl chloride (phosgene), carbonyl bromide, bishaloformate, diphenyl carbonate, dimethyl carbonate and the like . Preferably, carbonyl chloride (phosgene) can be used.
As the molecular weight modifier, a monofunctional compound similar to the monomer used in the production of the thermoplastic aromatic polycarbonate resin may be used. Non-limiting examples of such molecular weight regulators include phenol-based derivatives (e.g., para-isopropylphenol, para-tert-butylphenol (PTBP), para- cumyl phenol, para- Para-isononylphenol and the like), aliphatic alcohols and the like. Preferably, para-tert-butylphenol (PTBP) can be used.
Examples of the aromatic polycarbonate resin produced from such a dihydric phenol, a carbonate precursor and a molecular weight modifier include linear polycarbonate resin, branched polycarbonate resin, copolycarbonate resin and polyester carbonate resin , And these may be used alone or in combination of two or more.
The preferred viscosity average molecular weight (Mv, measured in methylene chloride solution) of the aromatic polycarbonate resin may be from 15,000 to 40,000, more preferably from 17,000 to 30,000, and most preferably from 20,000 to 30,000. If the viscosity average molecular weight of the aromatic polycarbonate resin is less than 15,000, mechanical properties such as impact strength and tensile strength may be significantly deteriorated. If the aromatic polycarbonate resin is more than 40,000, there may be a problem in resin processing due to an increase in melt viscosity.
When the resin composition of the present invention further comprises a polycarbonate resin, the content thereof is preferably 10 to 100 parts by weight, more preferably 50 to 100 parts by weight, per 100 parts by weight of the polysiloxane-polycarbonate resin. It is possible to improve the physical properties such as fluidity, heat resistance and impact strength at room temperature in the above content range, and to prevent deterioration of light resistance and low temperature impact strength.
Polyester resin
The above-mentioned chemical resistant polysiloxane-polycarbonate resin composition of the present invention may further comprise a polyester resin as an auxiliary resin component for realizing an object of the present invention such as light resistance improvement.
The polyester resin may be formed by condensation polymerization of at least one aromatic, aliphatic or alicyclic dicarboxylic acid with at least one aliphatic or alicyclic glycol. Preferably, the aromatic dicarboxylic acid is composed of 6 to 20 carbon atoms, the aliphatic or alicyclic dicarboxylic acid is composed of 3 to 20 carbon atoms, and the aliphatic or alicyclic glycol is composed of 2 to 20 carbon atoms have. As described above, the polyester resin can be synthesized using a dicarboxylic acid compound and a glycol compound. The production of the polyester resin using a dicarboxylic acid compound and a glycol compound can be generally carried out in two stages of an esterification reaction and a polycondensation reaction, and the production process thereof is already well known in the art. Examples of the dicarboxylic acid compound include terephthalic acid, isophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, dipric acid, -, 2,3-, 2,6- or 2,7-) naphthalene dicarboxylic acid, 4,4'-biphenyldicarboxylic acid, 4,4'-dibenzyldicarboxylic acid and the like can be used However, the present invention is not limited thereto as long as the technical idea of the present invention can be realized. Preferably, terephthalic acid, isophthalic acid or a mixture thereof can be used. Examples of the glycol compound include ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, (1,2-, 1,3- or 1,4-) cyclohexanedimethanol, neopentyl glycol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol and the like can be used, The present invention is not limited thereto. Preferably, ethylene glycol, cyclohexanedimethanol or a mixture thereof can be used.
The polyester resin may be used alone or in combination with one or more selected from the group consisting of polyethylene terephthalate resin, polypropylene terephthalate resin, polybutylene terephthalate resin, polyhexamethylene terephthalate resin, polycyclohexanedimethylene terephthalate resin and polytrimethylene terephthalate resin. It may contain more than two species. Preferably, a polyethylene terephthalate (PET) resin excellent in heat resistance, chemical resistance, electrical properties, mechanical strength and molding processability and advantageous in terms of economy can be used.
The polyester resin preferably has an intrinsic viscosity (IV) at 25 DEG C of 0.4 to 1.3 dl / g, for example, 0.5 to 1.1 dl / g in terms of workability and mechanical properties, 0.7 to 1.0 dl / g. It is possible to prevent the mechanical properties of the polyester resin composition of the present invention from being lowered in the range of the intrinsic viscosity and to solve the problem that the flow property is deteriorated and the molding processability is deteriorated.
The resin composition of the present invention may further contain 5 to 50 parts by weight, preferably 5 to 30 parts by weight, of the polyester resin per 100 parts by weight of the polysiloxane-polycarbonate resin. If the content of the polyester resin in the resin composition of the present invention is less than 5 parts by weight per 100 parts by weight of the polysiloxane-polycarbonate resin, it is difficult to satisfy the chemical resistance of the resin. Conversely, if the content is more than 50 parts by weight, Dimensional instability due to post-warpage becomes relatively large and the thermal stability of the resin may deteriorate.
additive
The polysiloxane-polycarbonate resin composition for an automobile interior material having improved light fastness of the present invention may be used in addition to the above-mentioned components by adding other additives as long as the object of the present invention is not impaired.
Examples of the additives include antioxidants, lubricants, UV stabilizers, compatibilizers, pigments, dyes, inorganic additives, coupling agents, impact modifiers, antistatic agents, antiwear agents and antimicrobial agents. In addition, the type of the present invention is not limited thereto as long as it can implement the technical idea of the present invention. These may be used alone or in combination of two or more.
Examples of the antioxidant include phenol type, phosphite type, thioether type, and amine type antioxidants. Examples of the releasing agent include polyethylene wax, silicone oil, and metal salts of stearic acid. Can be preferably used as an endurance agent such as benzophenone type, benzotriazole type or benzotriazine type.
As the filler, glass fiber, carbon fiber, silica, mica, or the like can be used. When such a filler is added, physical properties such as mechanical strength and heat resistance can be improved.
Such an additive may be included in an amount of 0.1 to 20 parts by weight, for example, 1.0 to 15 parts by weight, for example, 5 to 10 parts by weight, based on 100 parts by weight of the entire light-resistant polysiloxane-polycarbonate resin composition of the present invention.
The method of kneading the resin composition is not limited to those used in the art, but it is possible to apply a method of dry blending the components and additives of the present invention, followed by heating and melt kneading, and the temperature is usually in the range of 260 to 300 캜, Kneading can be performed so that each component can physically and chemically maintain sufficient affinity in the range of 270 to 290 ° C.
The automotive interior polysiloxane-polycarbonate resin composition having improved light resistance, which is formed by mixing the respective component resins, has excellent light resistance and excellent physical properties such as rigidity, fluidity, impact resistance and heat resistance, And automobile interior parts. In particular, it can be used as an optimal automobile interior material.
Molded product
Another aspect of the present invention is a molded article comprising the automotive interior polysiloxane-polycarbonate resin composition having improved light resistance.
The method of molding the resin composition of the present invention into a molded product is not particularly limited, and a molded article can be manufactured by a method generally used in the field of plastic molding.
The molded article produced from the automotive interior polysiloxane-polycarbonate resin composition having improved light fastness of the present invention can be utilized in various fields such as interior materials requiring light resistance, such as automobile, electric and electronic parts and industrial material parts.
The molded article may be a vehicle interior material. The interior material for a vehicle is installed in various parts of an automobile to enhance sound insulation, sound absorption and appearance. Such an interior material is used in a ceiling of an automobile interior, an inside surface of a door, a shelf of a back seat, And a skin material is bonded.
More specifically, the interior material for a car is a crash pad positioned in front of a driver's seat and a front passenger seat of a vehicle interior; A panel around the instrument panel assembled to the crash pad; A center fascia panel on which audio, a cup holder, an ashtray and the like are mounted; Head lining such as ceiling material; It is installed in the interior of the interior with different materials.
INDUSTRIAL APPLICABILITY The vehicle interior material comprising the automotive interior polysiloxane-polycarbonate resin composition having improved light fastness according to the present invention is excellent in light resistance, excellent in physical properties such as rigidity, fluidity, impact resistance and heat resistance, It can be widely used in the field of parts, and particularly, it can be used as an optimal vehicle interior material.
Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. It is to be understood, however, that the same is by way of illustration and example only and is not to be construed in a limiting sense.
The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.
Example
Specific specifications of each component used in the following examples and comparative examples are as follows.
(A) Polysiloxane-polycarbonate resin
Preparation of hydroxy-terminated siloxane
A condenser was attached to a 500 mL three-necked flask, 0.4 mol of monomer BY16-799 of Dow corning was dissolved in 300 mL of chloroform in a nitrogen atmosphere, 67 mL of triethylamine (TEA) catalyst was added, . A solution prepared by dissolving 0.2 mol of terephthaloylchloride (TCL) in 1,000 mL of chloroform was slowly added for 1 hour while refluxing the reaction solution, and refluxed for 12 hours. After removing the solvent of the reaction solution after the reaction, it was dissolved in acetone and washed with hot distilled water. And then dried in a vacuum oven for 24 hours to prepare a hydroxy-terminated siloxane having an ester bond represented by the following formula (4). The peak of the polysiloxane methylene group observed at 2.6 ppm and the hydrogen peak of the TCL benzene ring observed at 8.35 ppm by H-NMR (Avance DRX 300 from Bruker) and the polysiloxane observed at 6.75 to 7.35 ppm It was confirmed that the hydrogen was synthesized by the hydrogen peak of the benzene ring.
[Chemical Formula 4]
Preparation of polysiloxane-polycarbonate resin
Bisphenol A in an aqueous solution and phosgene gas were interfacially reacted in the presence of methylene chloride to prepare an oligomeric polycarbonate having a viscosity average molecular weight of about 1,000. To 400 mL of the obtained oligomeric polycarbonate was added 1.8 mL of a hydroxy-terminated siloxane (4.5 wt%) having an ester bond of the above formula (4) dissolved in methylene chloride, tetrabutyl ammonium chloride (TBACl), p- 1.55 g of butylphenol (PTBP) and 275 트리 of triethylamine (TEA, 15 wt% aqueous solution) were mixed and reacted for 30 minutes. The reacted oligomeric polycarbonate mixture was allowed to stand and separated, and only the organic phase was collected. To the organic phase were added 170 g of an aqueous solution of sodium hydroxide, 360 g of methylene chloride, and 300 μl of a 15% by weight aqueous solution of triethylamine, followed by reaction for 2 hours. After separating the layers, the organic phase with increased viscosity was washed with alkali and separated. Subsequently, the organic phase was washed with 0.1 N hydrochloric acid solution and then washed with distilled water two to three times. After the washing was completed, the concentration of the organic phase was uniformly adjusted to 76 ° C using a predetermined amount of pure water. After the assembly was completed, it was dried at 110 ° C for 8 hours and then at 120 ° C for 10 hours.
H-NMR (Avance DRX 300 from Bruker), a peak of the polysiloxane methylene group observed at 2.6 ppm and 2.65 ppm and a hydrogen peak of the TCL benzene ring observed at 8.35 ppm and a hydrogen peak observed at 6.95 to 7.5 ppm The copolymer (Mv: 21,000) was confirmed by the hydrogen peak of the benzene ring. The viscosity average molecular weight (Mv) was determined by measuring the viscosity of the methylene chloride solution at 25 캜 using a Ubbelohde Viscometer, and from this the intrinsic viscosity [] was calculated by the following equation:
[?] = 1.23 x 10 -5 Mv 0.83
(B) an acrylic copolymer
Polymethyl methacrylate (PMMA) having a weight average molecular weight of 2,000 was used as the acrylic copolymer.
Example 1
The ingredients shown in Table 1 were mixed and dispersed uniformly in a Henschel mixer and then extruded at a temperature of 270 DEG C in a biaxial melt mixing extruder having L / D = 40 and? = 25 mm to prepare pellets. The resulting pellets were dried in a hot air drier at 100 ° C for 5 hours and injection molded at 280 ° C to prepare specimens.
Examples 2 to 3
The specimens were prepared in the same manner as in Example 1 except that the components shown in the following Table 1 were used.
Comparative Example 1
Specimens were prepared in the same manner as in Example 1 except that the components shown in the following Table 1 were used and polysiloxane-polycarbonate resin other than the above-mentioned Formula 1 was used.
Comparative Example 2
Specimens were prepared in the same manner as in Example 1, except that the ingredients shown in Table 1 were used.
(Basis: parts by weight)
Property measurement
Experimental Example
The properties of the prepared specimens were measured and evaluated in the following Table 2, and the results are shown in Table 2 below.
(1) Flowability (melt index): Measured at 260 占 폚 and 2.16 kgf according to ASTM D1238, the unit being g / 10 min.
(2) Impact strength: A notch was evaluated on the test piece according to ASTM D256. The final test result was calculated as the average value of the ten test pieces the test results, and its unit is (1/8 ", kg f cm / cm).
(3) Heat deformation temperature: Measured under a load of 18.6 kgf according to ASTM D648, and the unit is in ° C.
(4) Light resistance: A tensile specimen (ASTM D 638) was used for light resistance evaluation. The specimen is irradiated with 700 KJ / m 2 of ultraviolet rays having a wavelength of 340 nm. The BLACK PNL temperature is 89 ± 3 ° C, the internal humidity is 50 ± 5% RH, and the irradiance is 0.55 ± 0.02 W / (m 2 .nm) . The measurement method is discoloration, discoloration, gray scale, ΔE, which are visually confirmed.
(1/8 ", kgfcm / cm)
Physical property measurement result
As a result of measuring the physical properties of the polysiloxane-polycarbonate resin composition having improved light resistance according to the present invention, the results shown in Table 2 were obtained and will be described in detail below.
As in Comparative Example 1, when the polycarbonate resin (A ') other than the formula (1) according to one embodiment of the present invention is used, it is understood that the naked eye, gray scale and ΔE of the light resistance are greatly decreased.
Further, as in Comparative Example 2, when the content of the acrylic copolymer (B) relative to the polysiloxane-polycarbonate resin is more than the proper amount, the light resistance is lowered, and there is a problem such as discoloration.
On the other hand, according to one embodiment of the present invention, as in Examples 1 to 3, 100 parts by weight of the polysiloxane-polycarbonate resin containing the above-mentioned Formula 1 as a repeating unit and 1 to 5 parts by weight of the acrylic copolymer, It is possible to confirm that the gray scale and the ΔE value are excellent in both the flowability and the impact strength, and in particular, there is no problem in visual observation such as discoloration and discoloration.
Accordingly, it can be seen from Table 2 that when the optimal combination ratio combination according to the present invention is followed, various mechanical properties such as rigidity, impact resistance, heat resistance and the like can be balancedly improved while having excellent light resistance.
INDUSTRIAL APPLICABILITY As described above, the polysiloxane-polycarbonate resin composition for automobiles having improved light fastness according to the present invention is prepared by mixing the polysiloxane-polycarbonate resin and the acrylic copolymer at an optimum composition ratio, It has excellent physical properties such as rigidity, fluidity, impact resistance and heat resistance, and can be widely used in the fields of electric and electronic, industrial materials and automobile interior parts. In particular, it can be used as an optimal vehicle interior material.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.
Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims as well as the appended claims.
Claims (8)
1. An automotive interior polysiloxane-polycarbonate resin composition having improved light resistance, which comprises 1 to 5 parts by weight of an acrylic copolymer,
[Chemical Formula 1]
(In the formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
Wherein the polysiloxane-polycarbonate resin is prepared by reacting a hydroxy-terminated siloxane of the following formula (1) with a polycarbonate having a repeating unit of the following formula (2):
[Chemical Formula 1]
(In the formula 1,
A is X or NH-X-NH, wherein X is a linear or branched alkylene group having 1-20 carbon atoms, a cycloalkylene group having 3-20 carbon atoms, or a halogen atom, an alkyl group, an alkoxy group, an aryl group or a carboxyl group A substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms,
R 1 is independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
R 2 is, independently, a hydrocarbon group having 1 to 13 carbon atoms or a hydroxy group,
R 3 is, independently, an alkylene group having 2-8 carbon atoms,
m is an integer of 0 to 4,
and n is an integer of 2 to 1,000.
(2)
(In the formula (2)
R 4 is an aromatic hydrocarbon group having 6 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms substituted with an alkyl group, a cycloalkyl group, an alkenyl group, an alkoxy group, a halogen atom or a nitro group.
Wherein the weight ratio of the hydroxyl-terminated siloxane to the polycarbonate is 50 to 99: 50 to 1. The polysiloxane-polycarbonate resin composition according to claim 1,
The acrylic copolymer may include at least one selected from the group consisting of polymethyl methacrylate, polybutyl methacrylate, polydecyl methacrylate, polydodecyl methacrylate, and polytridecyl methacrylate By weight based on the weight of the polysiloxane-polycarbonate resin composition.
The polysiloxane-polycarbonate resin composition for automotive interior having improved light resistance, wherein the acrylic copolymer has a weight average molecular weight of 1,000 to 10,000.
The automotive interior polysiloxane-polycarbonate resin composition according to claim 1, further comprising 10 to 100 parts by weight of a polycarbonate resin based on 100 parts by weight of the polysiloxane-polycarbonate resin.
The resin composition may further comprise at least one additive selected from the group consisting of an antioxidant, a lubricant, a UV stabilizer, a compatibilizer, a pigment, a dye, an inorganic additive, a coupling agent, an impact modifier, an antistatic agent, Wherein the resin composition has an improved light fastness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150127000A KR20170030127A (en) | 2015-09-08 | 2015-09-08 | Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150127000A KR20170030127A (en) | 2015-09-08 | 2015-09-08 | Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20170030127A true KR20170030127A (en) | 2017-03-17 |
Family
ID=58501937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150127000A KR20170030127A (en) | 2015-09-08 | 2015-09-08 | Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20170030127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210132270A (en) * | 2020-04-24 | 2021-11-04 | 주식회사 삼양사 | Polysiloxane-polycarbonate copolymer using a mixture of hydroxyl-terminated polysiloxanes and method for preparing the same |
-
2015
- 2015-09-08 KR KR1020150127000A patent/KR20170030127A/en active Search and Examination
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210132270A (en) * | 2020-04-24 | 2021-11-04 | 주식회사 삼양사 | Polysiloxane-polycarbonate copolymer using a mixture of hydroxyl-terminated polysiloxanes and method for preparing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7067186B2 (en) | Thermoplastic resin composition | |
| US11312860B2 (en) | Polycarbonate-based resin composition and molded article thereof | |
| KR101453773B1 (en) | Polycarbonate resin composition and molded product using the same | |
| US10577499B2 (en) | Reinforced polycarbonate composition with improved impact performance | |
| WO2009113762A2 (en) | Thermoplastic resin composition with improved compatibility | |
| KR101616168B1 (en) | Thermoplastic resin composition and article comprising the same | |
| KR102138701B1 (en) | High-gloss polycarbonate resin composition with excellent chemical resistance, mechanical properties and light resistance, and product comprising the same | |
| KR20070070686A (en) | Polyester thermoplastic resin composition | |
| EP3992248A1 (en) | Thermoplastic resin composition and molded product using same | |
| KR101914822B1 (en) | Fiberglass reinforced polycarbonated resin composition and article using the same | |
| CN108264748B (en) | Thermoplastic resin composition and molded article using same | |
| WO2018159786A1 (en) | Polycarbonate–polyorganosiloxane copolymer, polycarbonate resin composition including same, and molded product thereof | |
| KR20170030127A (en) | Polysiloxane-polycarbonate resin composition for vehicle interior having good ultraviolet resistance and molded article comprising the same | |
| JP5369296B2 (en) | Aromatic polycarbonate resin composition and molded article | |
| JP2850470B2 (en) | Polycarbonate resin composition | |
| KR101854012B1 (en) | Thermoplastic resin composition and article comprising the same | |
| KR20130074365A (en) | Thermoplastic resin composition and molded product using the same | |
| KR20160057558A (en) | Polysiloxane-polycarbonate resin composition for vehicle interior having excellent chemical resistance and molded article comprising the same | |
| JP6810636B2 (en) | Polycarbonate resin composition and molded product | |
| KR102251561B1 (en) | Thermoplastic resin composition having excellent impact resistance and fluidity and improved dimensional stability and heat aging property and molded article produced using the same | |
| US20010034420A1 (en) | Thermoplastic resin composition, process for producing the same and molded product using the same | |
| JP2001207041A (en) | Thermoplastic resin composition | |
| EP3992247A1 (en) | Thermoplastic resin composition and molded article using same | |
| JP2001139790A (en) | Flame-retardant thermoplastic resin composition | |
| KR100583064B1 (en) | Transparent polycarbonate/polyester resin composition with improved impact strength and chemical resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| AMND | Amendment | ||
| E601 | Decision to refuse application | ||
| AMND | Amendment |