KR20150109022A - Polybutylene therephthalate composition with improved impact resistance and connector including the same - Google Patents
Polybutylene therephthalate composition with improved impact resistance and connector including the same Download PDFInfo
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- KR20150109022A KR20150109022A KR1020140031931A KR20140031931A KR20150109022A KR 20150109022 A KR20150109022 A KR 20150109022A KR 1020140031931 A KR1020140031931 A KR 1020140031931A KR 20140031931 A KR20140031931 A KR 20140031931A KR 20150109022 A KR20150109022 A KR 20150109022A
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- polybutylene terephthalate
- composition
- impact strength
- polyketone polymer
- improved impact
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- -1 Polybutylene Polymers 0.000 title claims abstract description 39
- 239000000203 mixture Substances 0.000 title claims abstract description 31
- 229920001748 polybutylene Polymers 0.000 title 1
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 40
- 229920001470 polyketone Polymers 0.000 claims abstract description 22
- 229920000642 polymer Polymers 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 6
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001897 terpolymer Polymers 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- BYYLJVQCWRRFMP-UHFFFAOYSA-N 1-ethenyl-3-propan-2-ylbenzene Chemical compound CC(C)C1=CC=CC(C=C)=C1 BYYLJVQCWRRFMP-UHFFFAOYSA-N 0.000 description 1
- WHFHDVDXYKOSKI-UHFFFAOYSA-N 1-ethenyl-4-ethylbenzene Chemical compound CCC1=CC=C(C=C)C=C1 WHFHDVDXYKOSKI-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- 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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L73/00—Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups C08L59/00 - C08L71/00; Compositions of derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
본 발명은 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 혼합하면서도, 폴리케톤 폴리머의 함량을 조절함으로써, 충격강도가 향상된 폴리부틸렌 테레프탈레이트 조성물에 관한 것이다.The present invention relates to a polybutylene terephthalate composition having improved impact strength by controlling the content of a polyketone polymer while mixing polybutylene terephthalate resin and polyketone polymer.
Description
본 발명은 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 포함함으로써, 충격강도가 향상된 폴리부틸렌 테레프탈레이트 조성물 및 이를 포함하는 커넥터에 관한 것이다.
The present invention relates to a polybutylene terephthalate composition having improved impact strength by including a polybutylene terephthalate resin and a polyketone polymer, and a connector including the same.
일반적으로, 자동차, 전지 및 전자용 커넥터 부품의 소재로 나일론과 같은 폴리아미드, 폴리프로필렌과 같은 폴리올레핀, 폴리에틸렌 테레프탈레이트 및 폴리부틸렌 테레프탈레이트와 같은 폴리에스테르, 폴리카보네이트 등이 사용되고 있다.Generally, polyamide such as nylon, polyolefin such as polypropylene, polyester such as polyethylene terephthalate and polybutylene terephthalate, and polycarbonate are used as materials for connector parts for automobiles, batteries and electronic devices.
이들 소재 중에서, 폴리부틸렌 테레프탈레이트(PBT)는 우수한 기계적 특성, 전기적 특성, 내열성, 내수성 등을 갖기 때문에 주로 사용되고 있다. 또한, PBT는 결정성 수지이고, 신속한 결정화 속도 및 단시간에 고화를 달성함으로써 생산성이 높은 이점이 있다. 이러한 이점으로 인해, PBT는 자동차용 커넥터 하우징의 성형 재료로서 주로 사용되고 있다.Of these materials, polybutylene terephthalate (PBT) is mainly used because it has excellent mechanical properties, electrical characteristics, heat resistance, and water resistance. Further, PBT is a crystalline resin and has an advantage of high productivity by achieving rapid crystallization speed and solidification in a short time. Because of these advantages, PBT is mainly used as a molding material for automotive connector housings.
그러나, 이러한 PBT는 낮은 충격강도로 인해 파손되는 문제점이 있으며, 고온 다습 환경에서는 에스테르 결합이 수분에 의해 가수분해되어 형성된 말단의 카르복실기가 매우 빠르게 가수분해를 촉진시킨다. 이로 인해 수지의 분자량이 감소하여 기계적 물성인 강도, 신도, 탄성률, 충격강도 등이 급격히 하락하고 절연 파괴전압, 내아크성 등의 전기적 특성도 저하된다.However, such PBT has a problem that it is broken due to low impact strength. In a high temperature and high humidity environment, the carboxyl group at the terminal formed by hydrolysis of ester bond by moisture accelerates hydrolysis very quickly. As a result, the molecular weight of the resin is decreased, and the mechanical properties such as strength, elongation, elastic modulus and impact strength are rapidly lowered, and electrical characteristics such as dielectric breakdown voltage and arc resistance are lowered.
이에, 당 업계에서는 커넥터 부품에 적합하면서도 충격강도가 향상된 폴리부틸렌테레프탈레이트 조성물의 개발이 절실히 요구되고 있다.
Accordingly, in the art, it is urgently required to develop a polybutylene terephthalate composition which is suitable for a connector component and has an improved impact strength.
본 발명은 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 혼합하면서도, 폴리케톤 폴리머의 함량을 조절함으로써, 충격강도가 향상된 폴리부틸렌 테레프탈레이트 조성물 및 이를 포함하는 커넥터를 제공하는 것을 목적으로 한다.
Disclosed is a polybutylene terephthalate composition having improved impact strength by controlling the content of a polyketone polymer while mixing polybutylene terephthalate resin and polyketone polymer, and a connector including the same.
상기한 목적을 달성하기 위하여, 본 발명의 적절한 일 예는, 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 포함하고, 상기 폴리케톤 폴리머의 함량이 조성물 전체 중량을 기준으로 3~25중량%인 것을 특징으로 하는 폴리부틸렌 테레프탈레이트 조성물을 제공한다.In order to achieve the above object, a suitable example of the present invention includes a polybutylene terephthalate resin and a polyketone polymer, wherein the content of the polyketone polymer is 3 to 25% by weight based on the total weight of the composition The present invention provides a polybutylene terephthalate composition.
여기서, 상기 폴리부틸렌 테레프탈레이트 조성물은 충격강도가 6 내지 10KJ/m2인 것을 특징으로 한다.Here, the polybutylene terephthalate composition has an impact strength of 6 to 10 KJ / m 2 .
또한, 본 발명은 상기 폴리부틸렌 테레프탈레이트 조성물을 포함하는 커넥터를 제공한다.
The present invention also provides a connector comprising the polybutylene terephthalate composition.
본 발명의 폴리부틸렌 테레프탈레이트 조성물은 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 포함함으로써, 폴리부틸렌 테레프탈레이트의 굴곡특성은 유지하면서, 충격강도가 향상되어 각종 전기 제품 및 자동차 등의 커넥터 부품에 적용할 수 있다.
The polybutylene terephthalate composition of the present invention contains a polybutylene terephthalate resin and a polyketone polymer, so that the impact strength is improved while maintaining the bending property of the polybutylene terephthalate, .
이하, 본 발명을 상세히 설명한다.
Hereinafter, the present invention will be described in detail.
본 발명은 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 포함하고, 상기 폴리케톤 폴리머의 함량이 조성물 전체 중량을 기준으로 3~25중량%인 폴리부틸렌 테레프탈레이트 조성물을 제공한다.The present invention provides a polybutylene terephthalate composition comprising a polybutylene terephthalate resin and a polyketone polymer, wherein the content of the polyketone polymer is 3 to 25% by weight based on the total weight of the composition.
상기 폴리부틸렌 테레프탈레이트 조성물은 폴리부틸렌 테레프탈레이트 수지를 포함한다.The polybutylene terephthalate composition includes a polybutylene terephthalate resin.
여기서, 상기 폴리부틸렌 테레프탈레이트는 1,4-부탄디올과 테레프탈산 또는 디메틸 테레프탈레이트를 단량체로 사용하여 직접 에스테르화 반응 또는 에스테르 교환 반응을 통하여 축중합에 의해 제조된 것일 수 있으나, 이에 한정되지 않으며, 널리 알려져 있고 시판되는 것을 사용할 수 있다.Here, the polybutylene terephthalate may be one prepared by condensation polymerization through direct esterification reaction or ester exchange reaction using 1,4-butanediol, terephthalic acid or dimethyl terephthalate as monomers, but not limited thereto, Widely known and commercially available ones can be used.
또한, 상기 폴리부틸렌 테레프탈레이트의 고유점도는 특별히 한정되지 않으나, 0.8~1.5dl/g인 것이 바람직하다. 폴리부틸렌 테레프탈레이트의 고유점도가 상기 범위일 경우, 기계적 강도 및 성형성이 우수하다.The intrinsic viscosity of the polybutylene terephthalate is not particularly limited, but is preferably 0.8 to 1.5 dl / g. When the intrinsic viscosity of polybutylene terephthalate is in the above range, the mechanical strength and moldability are excellent.
한편, 본 발명의 폴리부틸렌 테레프탈레이트 조성물은 충격강도를 향상시키기 위하여, 폴리케톤 폴리머를 포함한다.On the other hand, the polybutylene terephthalate composition of the present invention includes a polyketone polymer in order to improve impact strength.
폴리케톤 폴리머는 선상 교대 구조체로서, 불포화 탄화 수소 1분자 마다 실질적으로 일산화탄소를 포함할 수 있으나, 이에 한정되지 않는다.The polyketone polymer is a line-by-line alternating structure and may contain substantially carbon monoxide for each unsaturated hydrocarbon, but is not limited thereto.
상기 폴리케톤 폴리머의 전구체로서 사용하는데 적당한 에틸렌계 불포화 탄화수소는 특별히 한정되지 않으나, 20개까지, 바람직게는 10개까지의 탄소 원자를 가질 수 있다. Ethylenically unsaturated hydrocarbons suitable for use as the precursor of the polyketone polymer are not particularly limited, but may have up to 20 carbon atoms, preferably up to 10 carbon atoms.
또한, 에틸렌계 불포화 탄화수소는 특별히 한정되지 않으나, 에텐 및 α-올레핀, 예를 들면 프로펜(propene), 1-부텐(butene), 아이소부텐(iso-butene), 1-헥센(hexene), 1-옥텐(octene)과 같은 지방족이거나 또는 다른 지방족 분자상에 아릴(aryl) 치환기를 포함하고, 특히 에틸렌계 불포화 탄소 원자상에 아릴 치환기를 포함하고 있는 아릴 지방족이다. Ethylenically unsaturated hydrocarbons are not particularly limited, but examples thereof include ethene and? -Olefins such as propene, 1-butene, iso-butene, 1-hexene, Is an aliphatic, such as 1-octene, or an aryl aliphatic group containing an aryl substituent on another aliphatic molecule, particularly containing an aryl substituent on an ethylenically unsaturated carbon atom.
에틸렌계 불포화 탄화 수소 중 아릴 지방족 탄화 수소의 예로서는 스틸렌(styrene), p-메틸스틸렌(methyl styrene), p-에틸스틸렌(ethyl styrene) 및 m-이소프로필 스틸렌(isopropyl styrene)을 들 수 있다. Examples of aryl aliphatic hydrocarbons in ethylenically unsaturated hydrocarbons include styrene, p-methyl styrene, p-ethyl styrene and m-isopropyl styrene.
본 발명에서 바람직하게 사용되는 폴리케톤 폴리머는 일산화탄소와 에텐(ethene)과의 코폴리머 또는 일산화탄소와 에텐과 적어도 3개의 탄소원자를 가지는 제2의 에틸렌계 불포화 탄화수소, 특히 프로펜(propene)) 같은 α-올레핀과의 터폴리머(terpolymer)이다.The polyketone polymer preferably used in the present invention is a copolymer of carbon monoxide and ethene or an alpha-olefin such as carbon monoxide, ethene and a second ethylenically unsaturated hydrocarbon having at least three carbon atoms, especially propene) It is a terpolymer with olefins.
상기 폴리케톤 터폴리머를 본 발명의 조성물의 주요 폴리머 성분으로서 사용할 때에, 터폴리머내의 제2의 탄화 수소 부분을 포함하고 있는 각 단위에 대하여, 에틸렌 부분을 포함하고 있는 단위가 적어도 2개 있다. 제2의 탄화수소 부분을 포함하고 있는 단위가 10~100개 있는 것이 바람직하다.When the polyketone terpolymer is used as the main polymer component of the composition of the present invention, there are at least two units containing an ethylene moiety in each unit containing the second hydrocarbon moiety in the terpolymer. It is preferable that the number of units containing the second hydrocarbon moiety is from 10 to 100.
이러한 폴리케톤 폴리머의 함량은 조성물의 전체 중량을 기준으로, 3~25중량%인 것이 바람직하다.The content of such a polyketone polymer is preferably 3 to 25% by weight, based on the total weight of the composition.
폴리케톤 폴리머의 함량이 3중량% 미만일 경우에는 충격강도 향상이 미비할 수 있으며, 함량이 25중량%를 초과할 경우에는 작업성이 현저히 저하되며, 오히려 충격강도가 더 낮아져서 자동차용 부품에 적용하기 어려운 문제점이 발생하게 된다.When the content of the polyketone polymer is less than 3% by weight, improvement of the impact strength may be insufficient. When the content exceeds 25% by weight, the workability is significantly lowered and the impact strength is lowered. A difficult problem arises.
또한, 본 발명의 폴리부틸렌 테레프탈레이트 조성물은 폴리머의 가공성이나 제조된 조성물의 물성을 개선하기 위한 종래에 알려져 있는 첨가제를 더 포함할 수 있다. 첨가제의 예로는, 산화방지제, 안정제, 충전제, 내화재료, 이형제, 착색제, 기타 재료 등일 수 있다. 상기 첨가제를 폴리케톤과 폴리부틸렌 테레프탈레이트의 블렌드 전이나 블렌드 시 또는 블렌드 후에 공지된 방법에 의하여 첨가할 수 있다.In addition, the polybutylene terephthalate composition of the present invention may further include additives known in the prior art for improving the processability of the polymer and the physical properties of the resultant composition. Examples of additives include antioxidants, stabilizers, fillers, refractory materials, release agents, coloring agents, and other materials. The additive may be added by known methods before, during or after the blending of polyketone and polybutylene terephthalate.
본 발명에 따른 폴리부틸렌 테레프탈레이트 조성물의 제조방법은 블렌드 또는 블렌드 성분이 과도한 붕괴를 만들어 내지 않고 균일의 블렌드가 제조되는 경우라면, 특별히 한정되지 않는다. 예를 들면, 구성 성분과 기타 첨가제들을 동시에 혼합한 후에, 압출기 내에서 용융 압출하고 펠렛 형태로 제조할 수 있다.The method of producing the polybutylene terephthalate composition according to the present invention is not particularly limited as long as the blend or the blend component does not cause excessive disintegration and a uniform blend is produced. For example, the components and other additives may be simultaneously mixed and then melt extruded in an extruder and produced in the form of pellets.
전술한 바와 같이, 폴리부틸렌 테레프탈레이트 수지 및 폴리케톤 폴리머를 포함하는 폴리부틸렌 테레프탈레이트 조성물은 상온에서 굴곡강도가 70 내지 75MPa이고, 굴곡 탄성률이 1900 내지 2100MPa이며, 충격강도가 6 내지 10KJ/m2으로, 굴곡특성은 일정 수준 유지하면서도, 향상된 충격강도를 나타낸다.As described above, the polybutylene terephthalate composition comprising a polybutylene terephthalate resin and a polyketone polymer has a flexural strength of 70 to 75 MPa at room temperature, a flexural modulus of 1900 to 2100 MPa, an impact strength of 6 to 10 KJ / m < 2 > and exhibits improved impact strength while maintaining a certain level of bending property.
한편, 본 발명의 폴리부틸렌 테레프탈레이트 조성물을 성형하여 성형품을 제조할 수 있다. 즉, 상기 폴리부틸렌 테레프탈레이트 조성물을 이용하여 사출 성형, 블로우 성형, 압출 성형, 열 성형 등의 여러 가지 공정에 의해 성형품을 제조할 수 있다. 구체적으로, 우수한 굴곡특성 및 충격강도가 동시에 요구되는 각종 전기전자 부품, 자동차 부품 등에 사용할 수 있고, 특히 자동차로 사용되는 내장부품 및 외장 부품 등의 커넥터에 유용하게 적용될 수 있다.
On the other hand, a molded article can be produced by molding the polybutylene terephthalate composition of the present invention. That is, the polybutylene terephthalate composition can be used to produce a molded article by various processes such as injection molding, blow molding, extrusion molding, and thermoforming. Specifically, it can be used for various electrical and electronic parts, automobile parts and the like that require excellent bending properties and impact strength at the same time, and can be particularly useful for connectors such as interior parts and exterior parts used in automobiles.
이하, 본 발명을 실시예에 의해 상세히 설명하기로 한다. 그러나 이들 실시예는 본 발명을 구체적으로 설명하기 위한 것으로서, 본 발명의 범위가 이들 실시예에 한정되는 것은 아니다.
Hereinafter, the present invention will be described in detail with reference to examples. However, these examples are for illustrating the present invention specifically, and the scope of the present invention is not limited to these examples.
실시예 1 및 2Examples 1 and 2
표 1에 기재된 조성대로 원료를 혼합하여 동방향 이축 압출기를 이용하여 230℃ 온도에서 용융 블렌딩한 후, 펠렛화하였으며 이를 다시 235℃로 사출성형하여 시편을 제조하였다.
The raw materials were mixed according to the compositions shown in Table 1, melt-blended at a temperature of 230 ° C using a twin-screw extruder in the same direction, pelletized, and injection molded at 235 ° C to prepare specimens.
비교예 1 내지 3Comparative Examples 1 to 3
표 1에 기재된 조성대로 원료를 혼합한 것을 제외하고는, 실시예 1과 동일한 과정으로 시편을 제조하였다.
A specimen was prepared in the same manner as in Example 1, except that the raw materials were mixed in accordance with the composition shown in Table 1.
평가예Evaluation example
실시예 1, 2 및 비교예 1 내지 3에서 각각 제조된 시편을 하기 방법을 이용하여 물성을 평가하였으며, 그 결과를 하기 표 1에 나타내었다.
The specimens prepared in Examples 1 and 2 and Comparative Examples 1 to 3 were evaluated for physical properties using the following methods. The results are shown in Table 1 below.
(1) 인장강도(1) Tensile strength
ASTM D 638에 따라 측정하였으며, 이때 시험편은 Type 1이었고, 시험속도는 50mm/분이었다.
ASTM D 638, where the specimen was Type 1 and the test speed was 50 mm / min.
(2) 굴곡탄성율 및 굴곡강도(2) Flexural modulus and flexural strength
ASTM D 790에 따라 상온에서 측정하였으며, 이때 시험편 크기는 127×12.7×6.4mm이었고, 시험속도는 10mm/분이었다.
ASTM D 790 at room temperature, where the size of the test piece was 127 x 12.7 x 6.4 mm and the test speed was 10 mm / min.
(3) 충격강도(3) Impact strength
ASTM D 256에 따라 상온에서 측정하였으며, 이때 시험편 크기는 63.5×12.7×6.4mm이었고, 노치(notch)된 시편을 사용하였다.
ASTM D 256 at room temperature, where the specimen size was 63.5 x 12.7 x 6.4 mm and notched specimens were used.
(wt%)PBT
(wt%)
(MPa)The tensile strength
(MPa)
(KJ/m2)Impact strength
(KJ / m 2 )
상기 표 1에서 알 수 있는 바와 같이, 실시예 1 및 2에서 각각 제조된 시편의 충격강도는 비교예 1 내지 3에서 각각 제조된 시편에 비해 높게 나타나, 충격강도가 향상된 것을 알 수 있었다. 또한, 실시예 1 및 2에서 제조된 폴리부틸렌 테레프탈레이트 조성물의 시편은 굴곡강도가 각각 75MPa, 72MPa이고, 굴곡탄성률이 2,050MPa, 1,950MPa로 일정 수준으로 유지되는 것을 알 수 있었다.As can be seen from Table 1, the impact strengths of the specimens prepared in Examples 1 and 2 were higher than those of the specimens prepared in Comparative Examples 1 to 3, respectively, and the impact strength was improved. In addition, it was found that the specimens of the polybutylene terephthalate compositions prepared in Examples 1 and 2 had flexural strengths of 75 MPa and 72 MPa, respectively, and flexural elasticity of 2,050 MPa and 1,950 MPa, respectively.
Claims (3)
상기 폴리케톤 폴리머의 함량이 조성물 전체 중량을 기준으로 3~25중량%인 것을 특징으로 하는 폴리부틸렌 테레프탈레이트 조성물.
A polybutylene terephthalate resin and a polyketone polymer,
Wherein the content of the polyketone polymer is 3 to 25% by weight based on the total weight of the composition.
상기 폴리부틸렌 테레프탈레이트 조성물은 충격강도가 6 내지 10KJ/m2인 것을 특징으로 하는 폴리부틸렌 테레프탈레이트 조성물.
The method according to claim 1,
Wherein the polybutylene terephthalate composition has an impact strength of 6 to 10 KJ / m 2 .
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