KR100224067B1 - A resin compositions based on polyproplylene - Google Patents
A resin compositions based on polyproplylene Download PDFInfo
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- KR100224067B1 KR100224067B1 KR1019960074885A KR19960074885A KR100224067B1 KR 100224067 B1 KR100224067 B1 KR 100224067B1 KR 1019960074885 A KR1019960074885 A KR 1019960074885A KR 19960074885 A KR19960074885 A KR 19960074885A KR 100224067 B1 KR100224067 B1 KR 100224067B1
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- methacrylate
- graft copolymer
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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
- 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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- C—CHEMISTRY; METALLURGY
- 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
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Abstract
본 발명은 폴리프로필렌계 수지 조성물에 관한 것으로서, 더욱 상세하게는 비극성인 폴리프로필렌계 수지와 극성인 아크릴계 수지로 이루어진 수지 조성물에 상용성을 부여하기 위하여 폴리프로필렌을 주골격으로 하는 그라프트 공중합체를 첨가하여 이루어짐으로써 신율 및 충격강도를 향상시킨 폴리프로필렌계 수지 조성물에 관한 것이다.The present invention relates to a polypropylene resin composition, and more particularly to a graft copolymer comprising polypropylene as a main skeleton in order to provide compatibility to a resin composition comprising a non-polar polypropylene resin and a polar acrylic resin. It is related with the polypropylene resin composition which improves elongation and impact strength by adding.
Description
본 발명은 폴리프로필렌계 수지 조성물에 관한 것으로서, 더욱 상세하게는 비극성인 폴리프로필렌계 수지와 극성인 아크릴계 수지로 이루어진 수지 조성물에 상용성을 부여하기 위하여 폴리프로필렌을 주골격으로 하는 그라프트 공중합체를 첨가하여 이루어짐으로써 신율 및 충격강도를 향상시킨 폴리프로필렌계 수지 조성물에 관한 것이다.The present invention relates to a polypropylene resin composition, and more particularly to a graft copolymer comprising polypropylene as a main skeleton in order to provide compatibility to a resin composition comprising a non-polar polypropylene resin and a polar acrylic resin. It is related with the polypropylene resin composition which improves elongation and impact strength by adding.
현재 자동차의 후단조합램프 어셈블리(rear combination lamp assembly)는 각각 다른 재질의 렌즈부와 하우징부를 핫멜트(hot melt)접착제로 접합하여 이루어진다. 주로 렌즈부의 재질은 폴리메틸메타크릴레이트이고, 하우징부의 재질은 아크릴로니트릴-부타디엔-스티렌 공중합체(ABS) 또는 폴리프로필렌계 수지이다.Currently, a rear combination lamp assembly of an automobile is formed by bonding a lens part and a housing part of a different material with a hot melt adhesive. The material of the lens part is mainly polymethyl methacrylate, and the material of the housing part is acrylonitrile-butadiene-styrene copolymer (ABS) or polypropylene resin.
여기서, 하우징부의 재질이 ABS인 경우는 수지간의 상용성이 우수하여 어셈블리 전체를 분쇄하여 재생하더라도 신율, 충격강도 등과 같은 물성의 감소가 현저하지 않아 다시 하우징부 재료로서도 사용할 수 있는 방법이 개시되어 있다.Here, when the material of the housing part is ABS, there is disclosed a method that can be used again as a housing part material because of excellent compatibility between resins, and even when the entire assembly is pulverized and regenerated, there is no significant reduction in physical properties such as elongation and impact strength. .
그러나, 하우징부위 재질이 폴리프로필렌계 수지인 경우 이종(異種)재료로 구성되어 있어 재활용이 불가능하다. 특히, 아크릴과 폴리프로필렌계 수지는 상용성이 나쁘므로 어셈블리 전체를 분쇄하여 재생하게 되면 물성이 현저히 떨어지므로 다른 성형물의 원료수지로 사용하기 곤란하다.However, when the housing portion is made of polypropylene-based resin, it is composed of heterogeneous materials and thus cannot be recycled. In particular, acrylic and polypropylene-based resins are poor in compatibility, so when the entire assembly is pulverized and regenerated, physical properties are remarkably degraded, making it difficult to use them as raw material resins of other moldings.
이와같이 아크릴계 수지와 폴리프로필렌계 수지로 이루어진 수지 조성물은 서로 사용성이 없어 이들 수지로 이루어진 제품은 재생이 곤란하다.Thus, the resin composition which consists of acrylic resin and polypropylene resin does not mutually use, and the product which consists of these resins is difficult to regenerate.
본 발명은 자동차의 폴리프로필렌계 후단조합램프 어셈블리와 같이 폴리프로필렌계 수지와 아크릴계 수지로 이루어진 수지 조성물의 상용성의 문제점을 해결하기 위하여 상기 조성에 상용화제로서 폴리프로필렌을 주골격으로하는 그라프트 공중합체를 첨가하여 이루어짐으로써 신율이나 충격강도의 저하없이 재생이 가능한 폴리프로필렌계 수지 조성물을 제공하는 데 그 목적이 있다.The present invention is to solve the problem of the compatibility of the resin composition consisting of polypropylene resin and acrylic resin, such as polypropylene rear stage combination lamp assembly of automobile graft copolymer having polypropylene as the main skeleton in the composition It is an object of the present invention to provide a polypropylene-based resin composition which can be regenerated without lowering elongation or impact strength.
본 발명은 폴리프로필렌계 수지와 아크릴계 수지로 이루어진 수지 조성물에 있어서, 상기 수지 100 중량부에 대하여 폴리프로필렌을 주골격으로 하는 그라프트 공중합체를 1∼25 중량부 함유하는 것을 그 특징으로 한다.The present invention is characterized by containing 1 to 25 parts by weight of a graft copolymer containing polypropylene as the main skeleton in a resin composition composed of a polypropylene resin and an acrylic resin.
이와같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.
본 발명은 폴리프로필렌계 수지와 아크릴계 수지로 이루어진 수지 조성물에서 상용화제를 첨가하여 이를 물성의 저하없이 재생이 용이하도록 한다.The present invention adds a compatibilizer in a resin composition consisting of a polypropylene resin and an acrylic resin to facilitate regeneration without deterioration of physical properties.
폴리프로필렌계 수지는 폴리프로필렌 단독중합체, 폴리프로필렌 공중합체 또는 충전제를 함유한 복합폴리프로필렌 수지이며, 여기에 각종 충전제 또는 첨가제 등이 포함되어 있다. 이때, 폴리프로필렌계 수지에 첨가되는 성분으로는 폴리에틸렌, 에틸렌-프로필렌 공중합체, 에틸렌-프로필렌-디엔 공중합체, 에틸렌-부텐 공중합체 또는 탈크, 황산바륨과 같은 무기충전제 등이 있다.The polypropylene resin is a composite polypropylene resin containing a polypropylene homopolymer, a polypropylene copolymer or a filler, and various fillers or additives are contained therein. At this time, the components added to the polypropylene resin include polyethylene, ethylene-propylene copolymers, ethylene-propylene-diene copolymers, ethylene-butene copolymers or inorganic fillers such as talc and barium sulfate.
이와같은 폴리프로필렌계 수지는 전체 수지 성분중 10∼95 중량%를 사용할 수 있다.Such polypropylene resin can use 10 to 95 weight% of all the resin components.
그리고, 아크릴계 수지는 메틸메타크릴레이트, 에틸메타크릴레이트, 프로필메타크릴레이트, n-부틸메타크릴레이트, 이소부틸메타크릴레이트, 메틸아크릴레이트, 에틸아크릴레이트, 프로필아크릴레이트 및 부틸아크릴레이트 중에서 선택된 1종 이상의 것을 사용할 수 있다.The acrylic resin is selected from methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate and butyl acrylate. One or more types can be used.
본 발명에서는 폴리프로필렌계 수지와 아크릴계 수지간에 상용성을 부여하는 바, 이를 위해 첨가되는 물질은 폴리프로필렌을 주골격으로 하는 그라프트 공중합체로서 그 함량은 상기 수지 성분 100 중량부에 대하여 1∼25 중량부이다.In the present invention, to give compatibility between the polypropylene resin and acrylic resin, the material added for this is a graft copolymer with polypropylene as the main skeleton, the content is 1 to 25 parts by weight based on 100 parts by weight of the resin component Parts by weight.
만일, 그 함량이 1 중량부 미만이면 상용화제 효과가 충분하지 않아 물성향상효과가 일어나지 않는 문제가 있고, 25 중량부를 초과하는 경우 상용화제 자체의 강도 및 강성이 낮기 때문에 오히려 강도,강성이 감소하는 문제가 있다.If the content is less than 1 part by weight, the compatibilizer effect is not sufficient, so that the effect of improving the physical properties does not occur. If the content exceeds 25 parts by weight, the strength and stiffness of the compatibilizer itself is lowered. there is a problem.
구체적인 화합물로는 (스티렌-아크릴로니트릴)-g-폴리프로필렌, (무수말레인산)-g-폴리프로필렌 또는 (스티렌-무수말레인산)-g-폴리프로필렌 등이 있다.Specific compounds include (styrene-acrylonitrile) -g-polypropylene, (maleic anhydride) -g-polypropylene or (styrene-maleic anhydride) -g-polypropylene.
이와같은 그라프트 공중합체를 첨가하는 경우 컴파운딩시 공중합체의 주쇄인 폴리프로필렌 성분은 하우징부재질과 상호 인력이 작용하고 그라프트된 성분인 PMMA와 상호 작용을 하게 되어 양 수지간에 상용성을 부여하게 된다.When such a graft copolymer is added, the polypropylene component, which is the main chain of the copolymer, when compounding, interacts with the housing member material and interacts with PMMA, the grafted component, thereby providing compatibility between both resins. Done.
이같은 원리로 자동차의 폴리프로필렌계 후단조합램프 어셈블리 등을 성형하기 위해 압출시에 상기와 같은 상용화제를 첨가하는 경우 물성 저하를 최소화할 수 있을 뿐만 아니라 이를 재생할 때 유리하게 적용될 수 있다.In the same principle, when the above compatibilizer is added during extrusion to form a polypropylene-based rear lamp assembly of an automobile, the degradation of physical properties can be minimized and advantageously applied when regenerating them.
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∼4 및 비교예 1∼5Examples 1-4 and Comparative Examples 1-5
다음 표 1에 나타낸 바와 같은 함량을 갖는 조성물을 수퍼믹서로 균일하게 혼합하였다. 그 다음 동방향이축압출기를 이용하여 235 ℃, 280 rpm으로 압출하여 물을 통과시키면서 수지를 냉각시켜 펠렛화하였다. 각각의 수지를 형체력 130 톤의 사출성형기로 사출성형하여 비중, 인장강도, 굴곡탄성율, 아이조드 충격강도 및 열변형온도를 측정하여 그 결과를 다음 표 1에 나타내었다.Next, the composition having a content as shown in Table 1 was uniformly mixed in a supermixer. Then, the resin was cooled and pelletized while passing through water by extrusion at 235 ° C. and 280 rpm using a coaxial extruder. Each resin was injection molded with an injection molding machine of 130 ton clamping force, and the specific gravity, tensile strength, flexural modulus, Izod impact strength, and heat deflection temperature were measured. The results are shown in Table 1 below.
여기서, 비중은 ASTM D-792 방법으로, 인장강도는 ASTM D-638 방법으로, 굴곡탄성율은 ASTM D-790 방법으로 측정하였고, 아이조드 충격강도는 ASTM D-256 방법으로 측정하였으며, 열변형온도는 ASTM D-648 방법에 의거하여 측정하였다.Here, specific gravity was measured by ASTM D-792 method, tensile strength was measured by ASTM D-638 method, flexural modulus was measured by ASTM D-790 method, Izod impact strength was measured by ASTM D-256 method, and heat distortion temperature was measured by It measured according to ASTM D-648 method.
본 발명에 따른 수지 조성은 폴리프로필렌계 수지와 아크릴계 수지의 상용성을 증가시킨 것으로서 이를 자동차의 후단조합램프 어셈불리에 적용하면 재생이 용이하고, 충격강도나 신율등이 향상되어 부품재료로서 유용하게 사용될 수 있다.The resin composition according to the present invention is to increase the compatibility of polypropylene resin and acrylic resin, and when applied to the rear assembly lamp assembly of the vehicle, it is easy to regenerate, and the impact strength and elongation are improved to be useful as parts materials. Can be used.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019960074885A KR100224067B1 (en) | 1996-12-28 | 1996-12-28 | A resin compositions based on polyproplylene |
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| KR1019960074885A KR100224067B1 (en) | 1996-12-28 | 1996-12-28 | A resin compositions based on polyproplylene |
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