WO2014168290A1 - 열가소성 고무 조성물 및 이를 이용한 성형품 - Google Patents
열가소성 고무 조성물 및 이를 이용한 성형품 Download PDFInfo
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- WO2014168290A1 WO2014168290A1 PCT/KR2013/005652 KR2013005652W WO2014168290A1 WO 2014168290 A1 WO2014168290 A1 WO 2014168290A1 KR 2013005652 W KR2013005652 W KR 2013005652W WO 2014168290 A1 WO2014168290 A1 WO 2014168290A1
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2347/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Derivatives of such polymers
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Definitions
- the present invention relates to a thermoplastic rubber composition. More specifically, the present invention relates to thermoplastic rubber compositions that can be strongly bonded to polar resins without the use of adhesives. Moreover, this invention also includes the composite thermoplastic resin molded article of the thermoplastic rubber composition of this invention and a thermoplastic resin.
- thermoplastic rubber composition to the thermoplastic resin molded body is performed in order to improve the impact relief, the anti-slip effect, or the touch of the molded body.
- thermoplastic resin molded object Conventionally, the styrene thermoplastic rubber and the olefin rubber which were excellent in flexibility were laminated
- the molded article may be made by laminating or bonding the thermoplastic rubber composition to the thermoplastic resin itself.
- Such methods include coextrusion molding, dichroic molding, insert injection molding or double injection molding.
- the co-extrusion method is a method in which two materials of the thermoplastic resin and the thermoplastic rubber composition are separately extruded using two extruders, joined to one mold, and the two materials are formed by thermal fusion.
- the two-color molding method is a method in which a two-layer molded product is molded by heat-sealing two materials in one mold using an injection molding machine having two injection cylinders mounted thereon.
- the insert injection molding method is a method in which a two-layer molded article is molded by injection-injecting a thermoplastic rubber composition into a mold placed by insert molding into a thermoplastic resin molded article molded by an injection molding machine.
- the double injection method is a method of making a molded article by injection molding two different resins sequentially in a mold.
- the adhesion with the polyolefin resin is good, but the adhesion with the polycarbonate resin is very poor. Accordingly, when a composite is formed using a styrene-based thermoplastic rubber in a thermoplastic resin including a polar functional group, such as a polycarbonate resin, irregularities are generated in the composite or the characteristics of the thermoplastic rubber are deteriorated.
- styrene-based thermoplastic rubber composition is laminated on a polycarbonate resin using an adhesive, but in this case, there is a problem in that the manufacturing process step is increased and the manufacturing cost is increased.
- SEBS-g-MA poly (styrene-b-ethylene-co-butylene-b-stylene) -g in which styrene-ethylene butylene-styrene block copolymer is graft copolymerized with maleic anhydride
- ((Maleic Anhydride)) as a compatibilizer
- a technique has been developed to improve the bonding property between polycarbonate resins or polyacrylate resins and styrenic thermoplastic rubbers without the use of adhesives.
- hardness control is not easy, and there are problems such as side reactions of functional groups of maleic anhydride of SEBS-g-MA depending on processing conditions.
- thermoplastic rubber composition needs to adjust the hardness according to the properties of the final desired product.
- thermoplastic rubber composition is not easy to adjust the hardness.
- the present inventors can directly bond the resin component and the rubber component with a strong adhesive force without using an adhesive when bonding the thermoplastic resin and the thermoplastic rubber composition, and furthermore, to develop the thermoplastic rubber composition of the present invention which is easy to control hardness. It is early.
- An object of the present invention is to provide a thermoplastic rubber composition having excellent bonding properties with a thermoplastic resin.
- Another object of the present invention is to provide a thermoplastic rubber composition that is easy to control the hardness.
- Still another object of the present invention is to provide a thermoplastic rubber composition having excellent bonding properties with a thermoplastic resin and easy hardness control, and a composite thermoplastic resin molded article in which a thermoplastic rubber is laminated on the thermoplastic resin.
- thermoplastic rubber composition according to the present invention comprises (A) 50 to 100 parts by weight of paraffin oil, (C) 30 to 70 parts by weight of inorganic additives, based on 100 parts by weight of the block terpolymer of the aromatic vinyl compound and the alkene compound, 5 to 30 parts by weight of (D) polyolefin resin and 30 to 70 parts by weight of (E) acrylic resin.
- the terpolymer (A) is of type A-B-A ', the A and A' blocks are hard segments, the B blocks are soft segments, and may comprise 20 to 35 weight percent hard segments and 65 to 80 weight percent soft segments.
- the A and A 'blocks are aromatic vinyl based polymers, and the B blocks may be conjugated diene based polymers.
- the terpolymer (A) includes styrene-ethylenebutadiene-styrene (SEBS) block copolymer, styrene-ethylenepropylene-styrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS) block copolymer, styrene-ethylene isoprene- Styrene (SEIS) block copolymers, styrene-ethyleneethylene-propylene-styrene (SEEPS) block copolymers, or mixtures thereof can be used.
- SEBS styrene-ethylenebutadiene-styrene
- SEPS styrene-ethylenepropylene-styrene
- SIS styrene-isoprene-styrene
- SEIS styrene-ethylene isoprene- Styrene
- SEEPS styrene
- Paraffin oil (B) has a kinematic viscosity of 95 to 215 cst (based on 40 °C), terpolymer (A) and the paraffin oil (B) may be used in a ratio of 2: 1 to 2: 2.
- the inorganic additive (C) may use calcium carbonate, talc, clay, silica, mica, titanium dioxide, carbon black, graphite, wollastonite, nanosilver, or a mixture thereof having a particle size of 0.01 to 5 ⁇ m. have.
- polystyrene resin (D) a polypropylene resin or polypropylene-ethylene copolymer resin having a melt index (230 ° C., 2.16 kg) of 20 to 40 g / 10 min may be used.
- acrylic resin (E) methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, tert-butyl acrylate, amyl acryl Latex, isoamyl acrylate, n-hexyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, pentadecyl acrylate, dodecyl acrylate, isobornyl acrylate, phenyl acrylate, benzyl acrylate, phenoxy Cethyl acrylate, 2-hydroxyethyl acrylate, 2-methoxyethyl acrylate, glycidyl acrylate, allyl acrylate, ethylene methyl acrylate or mixtures thereof can be used, preferably ethylene methyl acrylate Can be used.
- thermoplastic rubber composition of the present invention is an antimicrobial agent, heat stabilizer, antioxidant, mold release agent, light stabilizer, surfactant, coupling agent, plasticizer, admixture, colorant, stabilizer, lubricant, antistatic agent, colorant, flame retardant, weather agent, ultraviolet absorber, ultraviolet ray Blocking agents, flame retardants, fillers, nucleating agents, adhesion aids, pressure-sensitive adhesives and mixtures thereof may be further included.
- thermoplastic rubber composition of the present invention is produced from the thermoplastic rubber composition of the present invention.
- the present invention provides a composite thermoplastic resin in which the thermoplastic rubber composition is laminated or coated on the thermoplastic resin.
- the thermoplastic resin used at this time includes styrene resin, polycarbonate resin, polyolefin resin and the like. Furthermore, a molded article is manufactured from a composite thermoplastic resin.
- the present invention has the effect of providing a thermoplastic rubber composition that is easy to control hardness and has excellent bonding properties with a thermoplastic resin.
- the present invention relates to a thermoplastic rubber composition, and more particularly, to a thermoplastic rubber composition which can be strongly bonded to a polar resin without using an adhesive.
- thermoplastic rubber composition according to the present invention comprises a block terpolymer (A), a paraffin oil (B), an inorganic additive (C), a polyolefin resin (D) and an acrylic resin (E) of an aromatic vinyl compound and an alkene compound. .
- thermoplastic rubber composition of the present invention is based on 100 parts by weight of the block terpolymer (A) of the aromatic vinyl compound and the alkene compound, 50 to 100 parts by weight of paraffin oil (B), 30 to 70 parts by weight of the inorganic additive (C), polyolefin 5 to 30 parts by weight of the system resin (D) and 30 to 70 parts by weight of the acrylic resin (E).
- the terpolymer (A) used in the present invention is A-B-A 'type.
- a and A 'blocks are hard segments, and B blocks are soft segments.
- the hard segment serves to prevent thermoplastic deformation, and the soft segment plays a role of exerting rubber characteristics.
- the soft segment plays a role of exerting rubber characteristics.
- various characteristics such as hardness, heat resistance, chemical resistance, and wear resistance.
- the terpolymer (A) may be composed of 20 to 35% by weight of the hard segment and 65 to 80% by weight of the soft segment, preferably 27 to 35% by weight of the hard segment and 65 to 73% by weight of the soft segment. .
- An aromatic vinyl polymer may be used as the A and A ′ blocks, and a conjugated diene polymer may be used as the B block.
- the styrene-based polymer may be used as the A and A 'blocks, and the ethylene-butadiene, isoprene, ethylene-isoprene, ethylene-propylene polymer, and more preferably ethylene butadiene may be used as the B block.
- terpolymer (A) examples include styrene-ethylenebutadiene-styrene (SEBS) block copolymer, styrene-ethylenepropylene-styrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS) block copolymer, styrene- Ethyleneisoprene-styrene (SEIS) block copolymers, styrene-ethyleneethylenepropylene-styrene (SEEPS) block copolymers, and mixtures thereof, but is not necessarily limited thereto.
- SEBS styrene-ethylenebutadiene-styrene
- SEPS styrene-ethylenepropylene-styrene
- SIS styrene-isoprene-styrene
- SEIS styrene- Ethyleneisoprene-sty
- SEBS styrene-ethylenebutadiene-styrene
- SEPS styrene-ethylene propylene-styrene
- SIS styrene-isoprene-styrene
- SEIS styrene-ethylene isoprene-styrene
- the terpolymer (A) may have a weight average molecular weight of 140,000 to 180,000 g / mol.
- the weight average molecular weight may be 147,000 to 170,000 g / mol. In this case, there is an advantage in excellent tensile strength at low surface hardness.
- the paraffin oil (B) used in the present invention acts as a softener for thermoplastic rubber and is used to improve elongation.
- the paraffin oil (B) may have an average molecular weight of 400 to 1,200 g / mol, preferably 600 to 900 g / mol.
- Paraffin oil (B) may be used that has a kinematic viscosity (95 to 215 cst (based on 40 °C)). Preferably it may be from 100 to 210.5 cst (40 °C reference).
- Paraffin oil (B) may have a specific gravity [15/4 ° C.] of 0.75 to 0.95, a flash point of 250 to 330 ° C., and a pour point of ⁇ 25 to ⁇ 5 ° C.
- the specific gravity [15/4 ° C.] is 0.85 to 0.90
- the flash point is 270 to 300 ° C.
- the pour point ⁇ 18 to ⁇ 9 ° C.
- the paraffin oil (B) may be included in an amount of 50 to 100 parts by weight based on 100 parts by weight of the terpolymer (A). When used in the above range, not only elongation and workability, but also excellent physical property balance can be obtained.
- the content of paraffin oil (B) in the thermoplastic rubber composition may be greater than the content of terpolymer (A).
- the terpolymer (A) and the paraffin oil (B) may be used in a ratio of 2: 1 to 2: 2.
- the thermoplastic rubber composition of the present invention is excellent in bonding strength with other thermoplastic resins. As the content of paraffin oil increases, the bonding strength decreases, and when paraffin oil is not used at all, exothermic heat is generated during the extrusion process and there is a limitation in manufacturing a low hardness product.
- Inorganic additives (C) used in the present invention are well mixed with the terpolymer and paraffin oil to improve the processability of the thermoplastic rubber.
- the inorganic additive (C) may be used both without limitation, whether in particulate form or fibrous form, and preferably, particulate form may be used.
- the particle size is preferably 0.01 to 5 ⁇ m.
- Examples of the inorganic additive (C) may include calcium carbonate, talc, clay, silica, mica, titanium dioxide, carbon black, graphite, wollastonite, nanosilver, and the like, but are not limited thereto. These can be used individually or in mixture of 2 or more types.
- the inorganic additive (C) may be coated with a surface treatment agent such as a coupling agent, and may be added as it is without coating. Preferably, it is added without coating.
- the inorganic additive (C) may be included in an amount of 30 to 70 parts by weight based on 100 parts by weight of the terpolymer (A). In this case, the mechanical properties and workability are excellent, and excellent physical property balance can be obtained.
- Polyolefin resin (D) used in the present invention is used to improve the mechanical properties of the thermoplastic rubber and processability during injection molding.
- Various properties of the thermoplastic rubber may be realized according to the shape, molecular weight, density, melt index, mechanical properties, and the like of the polyolefin resin.
- polypropylene resin or polypropylene-ethylene copolymer resin can be used as the polyolefin resin (D).
- polypropylene resin may be preferably used, and when the polypropylene resin is used, the tensile strength is excellent.
- polyolefin resin (D) a polyolefin resin having a melt index (230 ° C., 2.16 kg) of 20 to 40 g / 10 min may be used. Preferably from 25 to 35 g / 10 min.
- polyolefin resin (D) a density of 0.85 to 1.1 g / cm 3 may be used, and a tensile strength (yield point, 50 mm / min) of 300 to 380 kg / cm 2 may be used.
- the structure of the polyolefin can be used any of atactic, isotactic, syndiotactic.
- the hardness (Shore A) of the thermoplastic rubber composition may be adjusted to 30 to 80 A.
- the polyolefin resin (D) may be included in an amount of 5 to 30 parts by weight based on 100 parts by weight of the terpolymer (A). When used in the above range, excellent mechanical properties and workability, excellent balance of physical properties can be obtained.
- Acrylic resin (E) used in the present invention is used to improve the bonding strength of the thermoplastic rubber.
- acrylic resin (E) methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, tert-butyl acrylate, amyl acrylate, isoamyl acrylate, n-acrylate Hexyl, cyclohexyl acrylate, 2-ethylhexyl acrylate, pentadecyl acrylate, dodecyl acrylate, isobornyl acrylate, phenyl acrylate, benzyl acrylate, phenoxyethyl acrylate, 2-hydroxyethyl acrylate, 2-methoxyethyl acrylate , Glycidyl acrylate, allyl acrylate or ethylene methyl acrylate (EMA) and the like can be used.
- EMA ethylene methyl acrylate
- the acrylic resin (E) may be included in an amount of 30 to 70 parts by weight based on 100 parts by weight of the terpolymer (A). When the acrylic resin is used within the above range, the bonding strength is excellent.
- thermoplastic rubber composition of the present invention may further contain conventional additives depending on the intended use, in addition to the components described above.
- Additives include antibacterial agents, heat stabilizers, antioxidants, mold release agents, light stabilizers, surfactants, coupling agents, plasticizers, admixtures, colorants, stabilizers, lubricants, antistatic agents, colorants, flame retardants, weathering agents, UV absorbers, sunscreens, flame retardants, Fillers, nucleating agents, adhesion aids, pressure-sensitive adhesives and the like, these may be used alone or in combination of two or more.
- antioxidants of phenols, phosphides, thioethers or amines can be used.
- thermoplastic rubber composition Conventional additives may be used in an amount of 30 parts by weight or less based on 100 parts by weight of the thermoplastic rubber composition.
- thermoplastic rubber composition of the present invention can be produced by a known method for producing a resin composition.
- the components (A), (B), (C), (D) and (E) and the other additives may be mixed at the same time, and then melt-extruded in an extruder and manufactured in pellet form.
- thermoplastic rubber of the present invention has a characteristic that the surface hardness (Shore A) according to KS M 6518 is 30 to 80 A, and the tensile strength according to KS M 6518 is 40 to 150 kgf / cm 2. Therefore, the molded article of the thermoplastic rubber composition of the present invention can be used for various purposes.
- thermoplastic rubber composition of the present invention can be molded into an arbitrary shape by a conventionally known method, for example, various molding methods such as hot press, injection molding, extrusion molding, calendar molding and the like.
- the present invention provides a composite thermoplastic resin in which a thermoplastic rubber composition is laminated or bonded to a thermoplastic resin.
- the thermoplastic resin used at this time includes styrene resin, polycarbonate resin, polyolefin resin and the like.
- the composite thermoplastic resin molded article of the present invention consists of a thermoplastic resin layer and a thermoplastic rubber composition layer, and the thermoplastic resin layer maintains the rigidity of the molded article to form a skeleton of the molded article.
- the composite thermoplastic resin molded article can be produced by, for example, a process such as coextrusion molding, two-color molding, insert injection molding, or double injection molding.
- the co-extrusion method is a method in which a thermoplastic resin and the thermoplastic rubber composition 2 material of the present invention are separately extruded using two extruders, joined into one mold, and the two materials are molded by thermal fusion.
- the two-color molding method is a method in which a two-layer molded product is manufactured by heat-sealing two materials in one mold using an injection molding machine in which two injection cylinders are mounted.
- the double injection method is a method in which molded articles are manufactured by sequentially injection molding two different resins in a mold.
- the insert injection molding method is a method of forming a two-layer molded article by injection-injecting a thermoplastic rubber composition into a mold formed by insert molding into a thermoplastic resin molded article molded by an injection molding machine and thermally fusion bonding.
- the molded article may be manufactured by double-injecting the thermoplastic rubber composition and the thermoplastic resin.
- the gluing step can be omitted by gluing without using an adhesive, thereby reducing costs and simplifying the process.
- Such shaped articles are used in bumpers and packaging for impact mitigation.
- the composite thermoplastic resin molded article of the present invention has a bond strength of 2 to 4 N / mm measured using UTM according to the KS M 6518 Peel Test.
- the rubber composition layer of the composite thermoplastic resin molded article has a surface hardness (Shore A) according to KS M 6518 is 30 to 80 A, tensile strength according to KS M 6518 is 40 to 150 kgf / cm2.
- Example 1-4 'and Comparative Example 1-6
- the pellets were prepared using a water cutter. After drying the prepared pellets at 80 °C for 2 hours, the PC specimen prepared in advance to the primary side in the 10ton injection machine was installed in the mold and injected under conditions of the injection temperature 200 °C to prepare a test sample for measuring the physical properties, The physical properties were measured by the following method and are shown in Table 1 below.
- Hardness It was measured by Shore A (Shore A) which is surface hardness according to KS M 6518.
- thermoplastic rubber compositions of Examples 1 to 4 have a hardness (Shore A) in the range of 30 to 80 A, and the tensile strength is 40 kgf / cm2 or more does not affect the workability, the bonding strength It can be seen that the bonding strength is excellent at 2 to 4 N / mm.
- Comparative Example 2 using a small amount of acrylic resin (E) and Comparative Example 5 without using acrylic resin (E) were inferior in bonding strength.
- Comparative Examples 3 and 4 without using the polyolefin (D) it can be seen that the bonding strength is 2 N / mm or more, but the hardness and the tensile strength are reduced. It can be seen that the bonding strength of Comparative Example 6 in which an excessive amount of polyolefin (D) was used and a small amount of acrylic resin (E) was also reduced.
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Abstract
Description
Claims (16)
- (A) 방향족 비닐 화합물과 알켄 화합물의 블록 삼원공중합체 100 중량부에 대하여,(B) 파라핀 오일 50 내지 100 중량부;(C) 무기첨가물 30 내지 70 중량부;(D) 폴리올레핀계 수지 5 내지 30 중량부; 및(E) 아크릴계 수지 30 내지 70 중량부;를 포함하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 삼원공중합체(A)는 A-B-A' 형이며, 상기 A 및 A' 블록은 하드세그먼트이며, 상기 B 블록은 소프트세그먼트이고, 상기 하드세그먼트는 20 내지 35 중량% 및 상기 소프트세그먼트는 65 내지 80 중량%를 포함하는 것을 특징으로 하는 열가소성 고무 조성물.
- 제2항에 있어서, 상기 A 및 A' 블록은 방향족 비닐계 중합체이며, 상기 B 블록은 공액 디엔계 중합체인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 삼원공중합체(A)는 스티렌-에틸렌부타디엔-스티렌(SEBS) 블록공중합체, 스티렌-에틸렌프로필렌-스티렌(SEPS) 블록공중합체, 스티렌-이소프렌-스티렌(SIS), 스티렌-에틸렌이소프렌-스티렌(SEIS) 블록공중합체, 스티렌-에틸렌에틸렌-프로필렌-스티렌(SEEPS) 블록공중합체, 및 이들의 2종 이상 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 삼원공중합체(A)는 중량평균분자량이 140,000 내지 180,000 g/mol인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 파라핀 오일(B)은 동점도가 95 내지 215 cst(40 ℃ 기준)인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 삼원공중합체(A)와 상기 파라핀 오일(B)의 비율은 2:1 내지 2:2인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 무기첨가물(C)은 탄산칼슘, 활석, 점토, 실리카, 마이카, 이산화티탄, 카본블랙, 흑연, 월라스토나이트(wollastonite), 나노실버 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 폴리올레핀계 수지(D)는 용융지수(230 ℃, 2.16 kg)가 20 내지 40 g/10min인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 폴리올레핀계 수지(D)는 폴리프로필렌 수지 또는 폴리프로필렌-에틸렌 공중합체 수지인 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항에 있어서, 상기 아크릴계 수지(E)는 메틸아크릴레이트, 에틸아크릴레이트, n-프로필아크릴레이트, 이소프로필아크릴레이트, n-부틸아크릴레이트, 이소부틸아크릴레이트, sec-부틸아크릴레이트, tert-부틸아크릴레이트, 아밀아크릴레이트, 이소아밀아크릴레이트, n-헥실아크릴레이트, 시클로헥실아크릴레이트, 2-에틸헥실아크릴레이트, 펜타데실아크릴레이트, 도데실아크릴레이트, 이소보르닐아크릴레이트, 페닐아크릴레이트, 벤질아크릴레이트, 페녹시에틸아크릴레이트, 2-히드록시에틸아크릴레이트, 2-메톡시에틸아크릴레이트, 글리시딜아크릴레이트, 알릴아크릴레이트, 에틸렌 메틸 아크릴레이트 또는 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 열가소성 고무 조성물.
- 제1항 내지 제11항 중 어느 한 항에 기재된 열가소성 고무 조성물의 성형품.
- (a) 스티렌계 수지, 폴리카보네이트계 수지 및 폴리올레핀계 수지로 이루어진 군으로부터 선택된 하나 이상의 열가소성 수지에 (b) 제1항 내지 제11항 중 어느 한 항에 따른 열가소성 고무 조성물이 적층된 복합 열가소성 수지.
- 제13항에 따른 복합 열가소성 수지 성형품.
- 제14항에 있어서, 상기 복합 열가소성 수지 성형품은 KS M 6518 박리 시험법에 따라 UTM을 이용하여 측정한 접합강도가 2 내지 4 N/mm인 것을 특징으로 하는 성형품.
- 제14항에 있어서, 상기 복합 열가소성 수지 성형품은 KS M 6518에 준한 표면경도가 30 내지 80 A이고, KS M 6518에 준한 인장강도가 40 내지 150 kgf/㎠인 것을 특징으로 하는 성형품.
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CN106633409A (zh) * | 2016-12-30 | 2017-05-10 | 慈溪市山今高分子塑料有限公司 | 宠物玩具用热塑性弹性体及其制备方法 |
EP3604422B1 (en) * | 2017-03-29 | 2022-02-16 | Mitsui Chemicals, Inc. | Thermoplastic elastomer composition having excellent molding appearance and molded body thereof |
KR102162574B1 (ko) * | 2018-06-28 | 2020-10-07 | 이호영 | 재활용이 가능하고 접착력이 우수한 포장용필름 조성물 |
CN113292952A (zh) * | 2021-06-30 | 2021-08-24 | 佛山南宝高盛高新材料有限公司 | 一种用于电器包装的可剥离热熔胶及其制备方法 |
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