KR19980057315A - Thermoplastic Composition - Google Patents
Thermoplastic Composition Download PDFInfo
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- KR19980057315A KR19980057315A KR1019960076589A KR19960076589A KR19980057315A KR 19980057315 A KR19980057315 A KR 19980057315A KR 1019960076589 A KR1019960076589 A KR 1019960076589A KR 19960076589 A KR19960076589 A KR 19960076589A KR 19980057315 A KR19980057315 A KR 19980057315A
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Abstract
본 발명은 열가소성수지 조성물에 관한 것으로서, 더욱 상세하게는 폴리아미드계 수지와 폴리프로필렌 수지로 이루어진 수지조성물에 폴리이미드 수지와 열가소성 탄성체를 첨가하여 이루어짐으로써 내열성, 충격강도 및 성형성이 우수하며 결정화속도가 빨라서 냉각시간을 단축할 수 있으므로써 자동차 외장재료로서 유용하게 사용할 수 있는 열가소성수지 조성물에 관한 것이다.The present invention relates to a thermoplastic resin composition, and more particularly, by adding a polyimide resin and a thermoplastic elastomer to a resin composition composed of a polyamide resin and a polypropylene resin, having excellent heat resistance, impact strength and moldability, and a crystallization rate. The present invention relates to a thermoplastic resin composition which can be usefully used as an automotive exterior material because of its fast cooling time.
Description
본 발명은 열가소성수지 조성물에 관한 것으로서, 더욱 상세하게는 폴리아미드계 수지와 폴리프로필렌 수지로 이루어진 수지조성물에 폴리이미드 수지와 열가소성 탄성체를 첨가하여 이루어짐으로써 내열성, 충격강도 및 성형성이 우수하며 결정화속도가 빨라서 냉각시간을 단축할 수 있으므로써 자동차 외장재료로서 유용하게 사용할 수 있는 열가소성수지 조성물에 관한 것이다.The present invention relates to a thermoplastic resin composition, and more particularly, by adding a polyimide resin and a thermoplastic elastomer to a resin composition composed of a polyamide resin and a polypropylene resin, having excellent heat resistance, impact strength and moldability, and a crystallization rate. The present invention relates to a thermoplastic resin composition which can be usefully used as an automotive exterior material because of its fast cooling time.
자동차 외장부품 재료로 주로 사용되고 있는 폴리카보네이트 수지와 폴리에스테르 수지로 이루어진 수지조성물은 성형성이 떨어지고, 장기사용시 내열성이 저하됨으로 인해 신율이 급격히 저하되어 체결부위가 취약한 문제가 있다. 뿐만 아니라 외장용으로 도장처리시 물성이 저하되는 문제점이 있다(미국특허 제 3,864,428 호, 일본특허 공개 소 55-9435 호).A resin composition composed of polycarbonate resin and polyester resin, which are mainly used as automotive exterior parts, has low moldability and a low elongation due to low heat resistance during long-term use. In addition, there is a problem that the physical properties during the coating treatment for the exterior deterioration (US Patent No. 3,864,428, Japanese Patent Publication No. 55-9435).
그리고, 자동차 외장재로서 폴리프로필렌 수지에 유리섬유를 매트리스한 시트를 압착공법으로 적용한 것은 유리섬유 매트리스시 분진이 발생하는 등 취급이 어렵고 재이용시 분쇄하기가 어렵다. 또한, 복잡한 구조의 부품으로 성형시에도 어려움이 있다.In addition, the application of the glass fiber mattress sheet to the polypropylene resin by the crimping method as a vehicle exterior material is difficult to handle, such as dust is generated when the glass fiber mattress is difficult to grind during reuse. In addition, there is a difficulty in molding into a component of a complex structure.
본 발명은 상기와 같은 종래 자동차 외장재로서의 수지조성물의 문제점을 해결하기 위하여, 폴리프로필렌 수지와 폴리아미드 수지로 이루어진 수지조성물에 폴리이미드 수지와 열가소성 탄성체를 첨가함으로써 내열성과 충격성이 우수하면서 성형성이 우수한 열가소성수지 조성물을 제공하는 데 그 목적이 있다.The present invention, in order to solve the problems of the resin composition as a conventional automobile exterior material as described above, by adding a polyimide resin and a thermoplastic elastomer to a resin composition consisting of a polypropylene resin and a polyamide resin, excellent heat resistance and impact resistance and excellent moldability It is an object to provide a thermoplastic resin composition.
본 발명은 폴리프로필렌 수지, 폴리아미드계 수지 및 첨가제로 이루어진 열가소성수지 조성물에 있어서, 폴리프로필렌 수지 10∼90 중량%, 폴리아미드계 수지 10∼90 중량%, 폴리이미드 수지 10∼40 중량%, 열가소성 탄성체 5∼55 중량%로 이루어진 것을 그 특징으로 한다.The present invention relates to a thermoplastic resin composition comprising a polypropylene resin, a polyamide resin and an additive, wherein the polypropylene resin is 10 to 90% by weight, the polyamide resin is 10 to 90% by weight, the polyimide resin is 10 to 40% by weight, and the thermoplastic It is characterized by consisting of 5 to 55% by weight of the elastic body.
이와같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.
본 발명은 폴리이미드 수지와 열가소성 탄성체를 첨가하여 내충격성, 내열성 및 성형성이 우수한 폴리아미드계 수지조성물에 관한 것이다.The present invention relates to a polyamide-based resin composition having excellent impact resistance, heat resistance and moldability by adding a polyimide resin and a thermoplastic elastomer.
본 발명에서 폴리아미드계 수지는 전체 수지조성물 중 10∼90 중량%이며, 만일 그 함량이 10 중량% 미만이면 내열성 및 강성이 저하되고, 90 중량%를 초과하는 경우 충격강도가 떨어지고 수분흡수로 인하여 성형품의 치수가 불안정해지는 문제가 있다. 폴리아미드계 수지의 구체적인 예로는 나일론 6, 나일론 66, 나일론 12 및 나일론 46 중에서 선택된 1 종 이상의 것이다.In the present invention, the polyamide-based resin is 10 to 90% by weight of the total resin composition, if the content is less than 10% by weight, the heat resistance and stiffness is lowered, and when it exceeds 90% by weight, the impact strength is lowered due to water absorption There is a problem that the dimensions of the molded article become unstable. Specific examples of the polyamide-based resin are one or more selected from nylon 6, nylon 66, nylon 12, and nylon 46.
그리고, 폴리프로필렌 수지는 전체 수지조성물 중 10∼90 중량%로 함유하는 바, 그 함량이 10 중량% 미만이면 성형성이 불량하고 밀도가 높아지고 90 중량%를 초과하면 충격성과 내열성이 떨어지는 문제가 있다.In addition, the polypropylene resin is contained in 10 to 90% by weight of the total resin composition, if the content is less than 10% by weight is poor in moldability, high density, and exceeds 90% by weight there is a problem of low impact and heat resistance .
열가소성 탄성체는 충격향상과 페인트성 향상을 위한 역할을 하는 것으로서, 에틸렌-프로필렌 고무를 사용한다. 이때, 에틸렌-프로필렌 고무는 고무 함량이 10∼20 중량%이고, 고무의 조성은 프로필렌의 함량이 20∼40 중량%이며 용융지수는 0.5∼3 g/10분(230℃)인 것을 사용하는 것이 바람직하다. 이와같은 열가소성 탄성체의 함량은 5∼55 중량%로서, 만일 그 함량이 5 중량% 미만이면 내충격성이 떨어지고 55 중량%를 초과하는 경우 내열성이 떨어지고 성형품의 외관품질이 저하되는 문제가 있다.Thermoplastic elastomers serve to improve impact and improve paintability, and use ethylene-propylene rubber. At this time, the ethylene-propylene rubber has a rubber content of 10 to 20% by weight, the composition of the rubber is 20 to 40% by weight of propylene and the melt index is 0.5 to 3 g / 10 minutes (230 ℃) to use desirable. The content of such thermoplastic elastomer is 5 to 55% by weight. If the content is less than 5% by weight, the impact resistance is lowered, and when the content exceeds 55% by weight, the heat resistance is poor and the appearance quality of the molded product is deteriorated.
그리고, 폴리이미드 수지를 전체 수지조성물 중 10∼40 중량%로 함유하는 바, 그 함량이 10 중량% 미만이면 내열성이 떨어지고 결정화도가 저하되며 40 중량%룰 초과하는 경우 성형성이 불량한 문제가 있다. 폴리이미드 수지는 예로는 결정화 촉진으로 후변형 방지 역할을 한다.When the polyimide resin is contained in an amount of 10 to 40% by weight in the total resin composition, when the content is less than 10% by weight, the heat resistance is poor, the crystallinity is lowered, and when the content exceeds 40% by weight, the moldability is poor. The polyimide resin serves to prevent post deformation by, for example, promoting crystallization.
그밖에 통상의 수지조성물에서 첨가되는 산화방지제 등의 첨가제를 첨가할 수 있다.In addition, additives, such as antioxidant added in the usual resin composition, can be added.
이하, 본 발명을 실시예에 의거하여 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the following Examples, but the present invention is not limited by the Examples.
실시예 1∼3 및 비교예 1∼3Examples 1-3 and Comparative Examples 1-3
다음 표 1에 나타낸 바와 같은 함량 및 조성으로 2축 압출기로 펠릿(pellet)재료를 사출성형기를 이용하여 열가소성수지를 제조하였고, 제조된 수지에 대하여 아이조드 충격강도, 내열성,굴곡탄성율 및 밀도를 측정하여 그 결과를 다음 표 1에 나타내었다.Next, as shown in Table 1, a thermoplastic resin was manufactured using an injection molding machine using a pellet material by a twin screw extruder, and the Izod impact strength, heat resistance, flexural modulus, and density of the prepared resin were measured. The results are shown in Table 1 below.
여기서, 아이조드 충격강도는 ASTM D 256 방법에 의거 측정하였고, 내열성은 ASTM D 648 방법으로 측정하였으며, 굴곡탄성율은 ASTM D 790 방법에 의해 측정하였다. 그리고, 밀도는 ASTM D 792 방법에 의해 측정하였다.Here, the Izod impact strength was measured according to the ASTM D 256 method, the heat resistance was measured by the ASTM D 648 method, the flexural modulus was measured by the ASTM D 790 method. And the density was measured by the ASTM D 792 method.
상기한 바와 같이 본 발명에 따른 열가소성수지 조성물은 상온에서나 저온에서의 충격강도 변화가 적고 내열성이 우수하며 성형성이 우수하여 복잡한 구조의 자동차 외장부품 재료에 유용하게 사용할 수 있다.As described above, the thermoplastic resin composition according to the present invention has a low impact strength change at room temperature or a low temperature, is excellent in heat resistance, and has excellent moldability.
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KR1019960076589A KR19980057315A (en) | 1996-12-30 | 1996-12-30 | Thermoplastic Composition |
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Cited By (1)
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US9976031B2 (en) | 2015-12-10 | 2018-05-22 | Hyundai Motor Company | Resin composition of intake hose material for vehicle turbo |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9976031B2 (en) | 2015-12-10 | 2018-05-22 | Hyundai Motor Company | Resin composition of intake hose material for vehicle turbo |
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