KR20020012985A - Thermoplastic resin composition - Google Patents
Thermoplastic resin composition Download PDFInfo
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- KR20020012985A KR20020012985A KR1020000046292A KR20000046292A KR20020012985A KR 20020012985 A KR20020012985 A KR 20020012985A KR 1020000046292 A KR1020000046292 A KR 1020000046292A KR 20000046292 A KR20000046292 A KR 20000046292A KR 20020012985 A KR20020012985 A KR 20020012985A
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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
- C08L23/12—Polypropene
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- C08J2300/22—Thermoplastic resins
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Abstract
Description
본 발명은 내긁힘성이 증진된 열가소성 수지조성물에 관한 것으로서, 더욱 상세하게는 폴리프로필렌과 스타이렌계 열가소성 수지를 주성분으로 하고 여기에 흐름성 증진제로 가공용 오일을, 동적 가교를 위한 가교개시제로 퍼록사이드 계통을, 가교조제로 아이소씨아나이트 계통, 산화아연, 지방산 아연 또는 지방산을, 내긁힘 성을 증가시키기 위한 첨가제로는 불소계 첨가제와 실리콘계 오일을, 내후성 증진을 위하여 광 안정제로 벤조트리아졸 계통, 힌더드 아민계통의 할스 등이 첨가되어 이루어짐으로써 내긁힘성과 더불어 성형 가공성, 내후성, 내열성, 내악취성 등의 제반물성이 우수한 폴리프로필렌과 스타이렌계 열가소성 수지의 열가소성 브렌드 수지 조성물에 관한 것이다.The present invention relates to a thermoplastic resin composition having improved scratch resistance, and more particularly, a polypropylene and a styrene-based thermoplastic resin as a main component, a processing oil as a flow enhancer, and a peroxide as a crosslinking initiator for dynamic crosslinking. Isocyanite series, zinc oxide, fatty acid zinc or fatty acids as cross-linking aids, fluorine-based additives and silicone oils as additives to increase the scratch resistance, and benzotriazole type, light stabilizer as a light stabilizer to improve weather resistance. The present invention relates to a thermoplastic blend resin composition of polypropylene and styrene-based thermoplastic resins having excellent scratch resistance and molding properties, weather resistance, heat resistance, malodor resistance, and the like, by adding a amine-based Hals.
인스트루먼트 패널을 비롯하여 자동차의 내장재는 내열성, 내열노화성 및 내한성이 우수하여야 하며, 또한 내충격성이 우수해야 한다.Interior materials of automobiles including instrument panels should be excellent in heat resistance, heat aging resistance and cold resistance, and also in impact resistance.
종래 자동차 내장재로는 폴리염화비닐계 수지를 사용하여 왔으나, 이는 환경에 유해한 염소계 물질을 발생시키므로, 이의 사용이 제한되고 있는 추세이다.Conventional automobile interior materials have been used polyvinyl chloride-based resin, but this is because the generation of chlorine-based substances harmful to the environment, their use is a trend that is limited.
이에 따라 다양한 수지가 자동차 내장부품용으로 연구되고 있는 바, 내열성과 내한성을 가지는 폴리카보네이트 수지나 아크릴로니트릴-부타디엔-스티렌계 수지, 그리고 폴리프로필렌 수지 등이 다각적으로 연구되고 있다.Accordingly, various resins have been studied for automobile interior parts, and polycarbonate resins, acrylonitrile-butadiene-styrene resins, and polypropylene resins having heat resistance and cold resistance have been studied in various ways.
특히, 자동차의 각종 내장 부품에 열가소성 수지, 특히 폴리올레핀계 수지가 광범위하게 사용되고 있는 바, 일반적으로 올레핀계 수지인 고밀도 폴리에틸렌과 폴리프로필렌은 타 수지에 비해 상대적으로 우수한 기계적 강성에도 불구하고 수지 자체로는 나타낼 수 있는 물성에 한계가 있다. 이에, 새로운 기능성을 부여할 수 있는 폴리올레핀계 복합수지가 사용되고 있는 추세이다.In particular, thermoplastic resins, especially polyolefin resins, are widely used in various interior parts of automobiles. Generally, high density polyethylene and polypropylene, which are olefin resins, have relatively high mechanical stiffness than other resins. There is a limit to the properties that can be represented. As a result, polyolefin-based composite resins capable of imparting new functionality are being used.
본 발명은 환경 친화적 수지인 폴리프로필렌에 스타이렌계 열가소성 수지를 도입함으로써 자동차용 내장재 부분에서 용이한 성형 가공성을 확보하고, 내긁힘성, 내후성, 내열성, 내악취성 등의 우수한 제반물성을 부여하는 첨가제를 함께 사용한 결과, 내후성, 내열성, 내악취성이 향상되고 특히 내긁힘성을 향상시킬 수 있음을 알게되어 본 발명을 완성하였다.The present invention is an additive that secures easy molding processability in the interior parts of automobiles by introducing a styrene-based thermoplastic resin to polypropylene, an environmentally friendly resin, and imparts excellent overall properties such as scratch resistance, weather resistance, heat resistance, and odor resistance. As a result of using together, it was found that weather resistance, heat resistance, odor resistance can be improved, and in particular, scratch resistance can be improved, thereby completing the present invention.
본 발명의 목적은 자동차 내장재 부품으로서 유용하도록 내후성, 내열성, 내악취성이 향상된 열가소성 수지조성물을 제공하는 데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a thermoplastic resin composition having improved weather resistance, heat resistance, and malodor resistance so as to be useful as an automotive interior component.
이와같은 목적을 달성하기 위한 본 발명의 열가소성 수지조성물은 스타이렌계 열가소성 수지 10∼90중량%와 폴리프로필렌 수지 10∼90중량%로 이루어진 주수지 100중량부와, 가공용 오일 5∼30중량부, 퍼록사이드계 개시제 0.02∼2.00중량부, 아이소씨아나이트계 가교조제 0.1∼1.5중량부, 지방산 아연 또는 지방산 0.1∼1.5중량부, 산화아연 1∼10중량부, 불소계 첨가제 1∼15중량부, 실리콘계 오일 0.1∼10.0중량부, 광 안정제로 벤조트리아졸 계통의 안정제 0.1∼1.0중량부 및 힌더드 아민 계통의 할스 0.1∼1.0중량부로 이루어진 것임을 그 특징으로 한다.The thermoplastic resin composition of the present invention for achieving the above object is 100 parts by weight of the main resin consisting of 10 to 90% by weight of styrene-based thermoplastic resin and 10 to 90% by weight of polypropylene resin, 5 to 30 parts by weight of processing oil, perlock 0.02 to 2.00 parts by weight of side initiator, 0.1 to 1.5 parts by weight of isocyanate crosslinking aid, 0.1 to 1.5 parts by weight of fatty acid zinc or fatty acid, 1 to 10 parts by weight of zinc oxide, 1 to 15 parts by weight of fluorine additive, silicone oil 0.1 It is characterized by that it consists of 0.1-1.0 weight part of stabilizers of a benzotriazole type | system | group and 0.1-1.0 weight part of Hals of a hindered amine system as an optical stabilizer.
이와같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.
본 발명에서는 기계적 강성이 우수한 폴리프로필렌 수지에 스타이렌계 열가소성 수지를 혼합하여 성형가공성을 확보하였다.In the present invention, a molding processability is secured by mixing a styrene thermoplastic resin with a polypropylene resin having excellent mechanical rigidity.
이때, 혼합비는 폴리프로필렌 수지 10∼90중량%와 스타이렌계 열가소성 수지 10∼90중량%로 이루어진다.At this time, the mixing ratio is 10 to 90% by weight of the polypropylene resin and 10 to 90% by weight of the styrene-based thermoplastic resin.
여기에, 가공용 오일을 주수지 100중량부에 대하여 5∼30중량부로 첨가하는 바, 가공용 오일은 흐름성을 증진시키는 역할을 한다.Here, the processing oil is added to 5 to 30 parts by weight based on 100 parts by weight of the main resin, the processing oil serves to improve the flowability.
그리고, 동적가교를 위하여 가교개시제로서 퍼록사이드계통의 화합물을 사용하는 바, 구체적으로는 다이큐밀퍼옥사이드, 2,5-다이메틸-2,5-다이-터셔리 부틸 퍼로시 헥신-3과 같은 다이알킬퍼옥사이드, 다이아실퍼옥사이드이다.In addition, a peroxide-based compound is used as a crosslinking initiator for dynamic crosslinking. Specifically, dicumyl peroxide, 2,5-dimethyl-2,5-di-tertiary butyl peroxy hexine-3, and the like. Dialkyl peroxide and diacyl peroxide.
이와같은 퍼록사이드계 가교개시제는 상기 주수지 100중량부에 대하여 0.02∼2.00중량부로 첨가하는 것이 내oder성 및 과도한 가교에 의한 압출성 저하 방지한다는 점에 있어서 바람직하다.Such peroxide-based crosslinking initiator is preferably added in an amount of 0.02 to 2.00 parts by weight based on 100 parts by weight of the main resin in terms of preventing the lowering of the extrusion resistance due to excessive resistance and excessive crosslinking.
또한, 가교조제로서는 아이소씨아나이트 계통, 산화아연, 지방산아연 또는지방산을 사용하는 바, 아이소씨아나이트계 화합물, 지방산아연 또는 지방산은 각각 상기 주수지 100중량부에 대하여 0.1∼1.5중량부로 첨가하며, 산화아연은 1∼10중량부로 첨가한다.In addition, as the crosslinking aid, isocyanate series, zinc oxide, fatty acid zinc or fatty acid are used. The isocyanate compound, fatty acid zinc or fatty acid is added in an amount of 0.1 to 1.5 parts by weight based on 100 parts by weight of the main resin, Zinc oxide is added in 1-10 weight part.
한편, 내긁힘성을 증가시키기 위한 첨가제로는 불소계 첨가제와 실리콘계 오일을 첨가하며, 그 함량은 각각 상기 주수지 100중량부에 대하여 1∼15중량부 및 0.1∼10.0중량부인 것이 바람직하다. 여기서, 불소계 첨가제의 구체적인 예로는 폴리테트라플루오르에틸렌을 들 수 있다.On the other hand, as an additive to increase the scratch resistance is added a fluorine-based additive and a silicone-based oil, the content is preferably 1 to 15 parts by weight and 0.1 to 10.0 parts by weight with respect to 100 parts by weight of the main resin, respectively. Here, polytetrafluoroethylene is mentioned as a specific example of a fluorine additive.
그밖에 내후성 증진을 위하여 광안정제로 벤조트리아졸 계통의 안정제와 힌더드 아민 계통의 할스를 각각 0.1∼10중량부되도록 사용한다.In addition, in order to improve weather resistance, a stabilizer of benzotriazole type and Hals of hindered amine type are used to be 0.1 to 10 parts by weight, respectively.
본 발명을 실시예에 의거 상세하게 설명하면 다음과 같은 바, 다음 실시예는 본 발명에 따른 폴리프로필렌과 스타이렌계 열가소성 수지 브렌드 수지 조성물의 제조방법과 내긁힘성, 내후성, 내열성, 내악취성, 가공성등을 비교예와의 비교에 의해 본 발명 제품의 효과에 대하여 설명하고 있다. 여기에 기재된 실시예는 본 발명의 설명을 위한 것으로 본 발명의 범위를 제한하려는 의도로 제공되는 것은 아니다.The present invention will be described in detail based on Examples as follows. The following examples illustrate a method for preparing a polypropylene and styrene-based thermoplastic resin blend resin composition according to the present invention and scratch resistance, weather resistance, heat resistance, odor resistance, The effect of the product of this invention is demonstrated by comparing workability etc. with a comparative example. The examples described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.
실시예 및 비교예에서 사용된 사출성형용 칩은 ASTM 시험법에 의한 내긁힘성, 내후성, 내열성, 내악취성 등을 측정하기 위한 시료로 190∼200℃에서 스크류식 사출성형기를 사용하여 덤벨 및 직육면체 시편이 제조되었으며 다음의 측정방법에 따라 평가되었다.Injection molding chips used in the Examples and Comparative Examples are samples for measuring the scratch resistance, weather resistance, heat resistance, odor resistance, etc. by the ASTM test method using a screw injection molding machine at 190 ~ 200 ℃ Cuboid specimens were prepared and evaluated according to the following measurement methods.
측정방법How to measure
1. 내긁힘성: ASTM D∼3363법에 따랐다.1. Scratching resistance: According to ASTM D-3363 method.
2. 내후성: ASTM D∼2565법을 이용 측정한 후 색차계를 이용 KS K∼0911법에 따라 등급을 표시하였다.2. Weather resistance: After the measurement using ASTM D-2565 method, the grade was marked according to KS K-0911 method using a color difference meter.
3.내악취성: ASTM D∼4339법에 따랐다.3. Malodor resistance: According to ASTM D-4339 method.
4.내열성: ASTM D∼2115법에 따랐다.4. Heat resistance: According to ASTM D-2115 method.
위의 측정방법에서 내악취성의 경우 가장 냄새가 없음을 5급으로 하여 5등급으로 나눠서 평가 결과를 나타내었으며, 내열성의 경우 80℃에서 외부 형태 변형 정도를 육안으로 관찰하였다. 또한 제품의 사출성을 실험하기 위하여 1600톤 사출성형기의 자동차 내장재 금형을 사용하였으며 수지 온도 190∼200℃, 사출압력 70∼80바, 보압 30∼60바를 적용하여 제품을 사출하여 사출 가공성을 평가하였다.In the above measurement method, the odor resistance was divided into 5 grades with the most odorless grade 5, and the evaluation results were visually observed at 80 ° C for the degree of external shape deformation. In addition, to test the injection performance of the product, the automobile interior mold of the 1600 ton injection molding machine was used, and the injection molding was evaluated by applying the resin temperature of 190 to 200 ° C, the injection pressure of 70 to 80 bar, and the holding pressure of 30 to 60 bar. .
실시예 1Example 1
스타이렌계 열가소성 수지 75중량%, 폴리프로필렌 수지 25중량%, 가공용 오일 25중량%에 퍼록사이드계 가교개시제(다이큐밀퍼옥사이드, 2,5-다이메틸-2,5-다이-터셔리 부틸 퍼로시 헥신-3) 0.5중량부, 가교조제로 아이소씨아나이트 계통(트리아릴이소시아나이트)과 지방산 아연 1중량부, 산화아연 5중량부, 불소계 첨가제(폴리테트라플루오르에틸렌)를 10중량부, 실리콘계 오일 1중량부, 벤조트리아졸계 광안정제(2,2-하이드록시-5-메틸페닐 벤조트리아졸))와 힌더드 아민 계통의 할스(폴리6-1,1,3,3-테트라메틸부틸 아미노-1,3,5-트리아진-2,4-디일-2,2,6,6,-테트라메틸-4-피퍼리디닐 이미노-1,6-헥사네디일-2,2,6,6-테트라메틸-4-피퍼리디닐 이미노) 각각 0.5중량부 첨가하여 투윈스크류 컴파운딩 머신 내에서 190∼200℃로 용융 혼합하여 다이를 통해 스파게티로 토출한 후 냉각하고 커터로 절단하여 컴파운딩한 칩을 사용하여 220톤 사출성형기에서 수지온도 190∼200℃로 하여 사출 성형하여, 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 1에 나타내었다.Peroxide-based crosslinking initiator (dicumyl peroxide, 2,5-dimethyl-2,5-di-butyl butyl peroxy) in 75% by weight of styrene-based thermoplastic resin, 25% by weight of polypropylene resin and 25% by weight of processing oil Hexin-3) 0.5 parts by weight, isocyanate (triaryl isocyanate), 1 part by weight of fatty acid zinc, 5 parts by weight of zinc oxide, 10 parts by weight of fluorine additive (polytetrafluoroethylene) as a crosslinking aid, silicone oil 1 part by weight, benzotriazole-based light stabilizer (2,2-hydroxy-5-methylphenyl benzotriazole) and Hals (poly 6-1,1,3,3-tetramethylbutyl amino-1 of a hindered amine system) , 3,5-triazine-2,4-diyl-2,2,6,6, -tetramethyl-4-piperidinyl imino-1,6-hexanediyl-2,2,6,6- 0.5 parts by weight of tetramethyl-4-piperidinyl imino) was added, melt mixed at 190-200 ° C. in a two-win screw compounding machine, and discharged into a spaghetti through a die. Each, and cut by a cutter to injection molding by compounding a resin temperature of 190~200 ℃ at 220 ton injection molding machine using a chip, and measuring physical properties in the above-described way. The results are shown in Table 1.
실시예 2Example 2
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.05중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하였다.It was prepared in the same manner as in Example 1 except that 0.05 parts by weight of the peroxide system was used as a crosslinking initiator for dynamic crosslinking.
실시예 3Example 3
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하였다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking was prepared in the same manner as in Example 1.
실시예 4Example 4
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.5중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하였다.Except for using 0.5 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking was prepared in the same manner as in Example 1.
비교예 1Comparative Example 1
종래에 사용된 연질 폴리염화비닐계 수지를 사용하여 시편을 제작하고, 물성을 측정하여 그 결과를 다음 표 1에 나타내었다.Specimens were prepared using a soft polyvinyl chloride-based resin used in the prior art, the physical properties were measured and the results are shown in Table 1 below.
비교예 2Comparative Example 2
스타이렌계 열가소성 수지 75중량%, 폴리프로필렌 수지 25중량%, 가공용 오일 25중량%을 가교제를 사용하지 않고 단순 블렌드한 후 물성을 측정하여 비교하였다.75 wt% of styrene-based thermoplastic resin, 25 wt% of polypropylene resin, and 25 wt% of processing oil were simply blended without using a crosslinking agent, and then physical properties were measured and compared.
실시예 5Example 5
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 불소계 첨가제를 10중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 2에 나타내었다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking and 10 parts by weight of a fluorine-based additive that is an additive for increasing scratch resistance, the physical properties were obtained in the same manner as in Example 1 Was measured and the results are shown in Table 2 below.
실시예 6Example 6
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량파트를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 불소계 첨가제를 1중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 표 2에 나타내었다.The method was prepared in the same manner as in Example 1, except that 0.1 part by weight of the peroxide system was used as a crosslinking initiator for dynamic crosslinking, and 1 part by weight of a fluorine-based additive that is an additive for increasing scratch resistance. Physical properties were measured and the results are shown in Table 2.
실시예 7Example 7
동적가교를 위한 가교개시제로 퍼록사이드계를 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 불소계 첨가제를 5중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 2에 나타내었다.Except for using 0.1 parts by weight of the peroxide-based crosslinking initiator for dynamic crosslinking and 5 parts by weight of a fluorine-based additive, which is an additive for increasing scratch resistance, it was prepared in the same manner as in Example 1 Was measured and the results are shown in Table 2 below.
실시예 8Example 8
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 실리콘계 오일을 0.5중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 3에 나타내었다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking and 0.5 parts by weight of silicone oil, which is an additive for increasing scratch resistance, was prepared in the same manner as in Example 1 Was measured and the results are shown in Table 3 below.
실시예 9Example 9
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 실리콘계 오일을 1중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 3에 나타내었다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking and 1 part by weight of silicone oil, which is an additive for increasing scratch resistance, was prepared in the same manner as in Example 1 Was measured and the results are shown in Table 3 below.
실시예 10Example 10
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 실리콘계 오일을 2중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 3에 나타내었다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking and 2 parts by weight of silicone oil, which is an additive for increasing scratch resistance, was prepared in the same manner as in Example 1 Was measured and the results are shown in Table 3 below.
실시예 11Example 11
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과내긁힘성을 증가시키기 위한 첨가제인 실리콘계 오일을 2.0∼5.0중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 3에 나타내었다.The method was prepared in the same manner as in Example 1, except that 0.1 parts by weight of the peroxide system was used as a crosslinking initiator for dynamic crosslinking, and 2.0 to 5.0 parts by weight of the silicone oil, which is an additive for increasing scratch resistance. Physical properties were measured and the results are shown in Table 3 below.
실시예 12Example 12
동적가교를 위한 가교개시제로 퍼록사이드 계통을 0.1중량부를 사용한 것과 내긁힘성을 증가시키기 위한 첨가제인 실리콘계 오일을 10중량부를 사용한 것을 제외하고 상기 실시예 1과 동일한 방법으로 제조하여 상기의 방법으로 물성을 측정하고 그 결과를 다음 표 3에 나타내었다.Except for using 0.1 parts by weight of the peroxide system as a crosslinking initiator for dynamic crosslinking and 10 parts by weight of silicone oil, which is an additive for increasing scratch resistance, was prepared in the same manner as in Example 1 Was measured and the results are shown in Table 3 below.
상기 표 1 내지 3의 결과로부터, 기존의 사용 수지인 폴리염화비닐계 수지 조성물과 비교할 때 본 발명에 따른 폴리프로필렌과 스타이렌계 열가소성 수지 브렌드 수지조성물은 내후성은 약간 떨어지나 자동차의 내장재용으로의 적용시 특히 중요하게 고려되는 내긁힘성, 내악취성, 내열성, 사출성 등이 우수함을 알 수 있다.From the results of Tables 1 to 3, the polypropylene and styrene-based thermoplastic resin blend resin composition according to the present invention is slightly inferior in weatherability when compared to the polyvinyl chloride-based resin composition which is conventionally used resin, but when applied to interior materials of automobiles It can be seen that the scratch resistance, malodor resistance, heat resistance, injection resistance, and the like, which are considered particularly important, are excellent.
이상에서 상세히 설명한 바와 같이, 본 발명에 따라 폴리프로필렌과 스타이렌계 열가소성 수지를 주성분으로 하고 여기에 흐름성 증진제로 가공용 오일과 동적가교를 위한 가교개시제로 퍼록사이드계통을, 가교조제로 아이소씨아나이트 계통, 산화아연, 지방산 아연 또는 지방산을, 내긁힘성을 증가시키기 위한 첨가제로 불소계 첨가제과 실리콘계 오일을, 그리고 내후성 증진을 위하여 광안정제로 벤조트리아졸 계통의 안정제와 힌더드 아민계 할스계통의 안정제를 첨가한 조성물의 경우 내긁힘성이 우수한 열가소성 수지를 제조할 수 있었으며, 이것을 자동차 내장재에 적용시 내긁힘성과 더불어 내후성, 내열성, 내악취성 등 제반물성이 우수한 자동차 내장재 제품을 제조할 수 있으며, 더불어서 자동차의 플라스틱 환경문제의 원인이 되고 있는 폴리염화비닐계에 비하여 환경친화적이고, 재가공성이 우수하며 경량화가 가능하고, 우수한 사출 가공성에 의하여 여러 다른 부분으로의 적용도 가능한 등의 효과를 얻을 수 있다.As described in detail above, according to the present invention, polypropylene and styrene-based thermoplastic resin are main components, peroxide-based as crosslinking initiator for processing oil and dynamic crosslinking as flow improving agent, and isocyanite-based as crosslinking aid. , Zinc oxide, fatty acid zinc or fatty acid, fluorine additive and silicone oil as additives to increase scratch resistance, and benzotriazole stabilizer and hindered amine stabilizer as light stabilizer to improve weather resistance In the case of a composition, a thermoplastic resin having excellent scratch resistance could be manufactured, and when applied to an automotive interior material, an automobile interior product having excellent properties such as scratch resistance, weather resistance, heat resistance, and odor resistance can be manufactured. Pole causing plastic environmental problems Compared to the vinyl chloride, it is environmentally friendly, has excellent reprocessing properties, can be reduced in weight, and can be applied to various parts by excellent injection processability.
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