KR0128540B1 - Polyarylene sulfide resin composition - Google Patents

Polyarylene sulfide resin composition

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Publication number
KR0128540B1
KR0128540B1 KR1019930031973A KR930031973A KR0128540B1 KR 0128540 B1 KR0128540 B1 KR 0128540B1 KR 1019930031973 A KR1019930031973 A KR 1019930031973A KR 930031973 A KR930031973 A KR 930031973A KR 0128540 B1 KR0128540 B1 KR 0128540B1
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South Korea
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polyarylene sulfide
sulfide resin
resin composition
weight
mechanical strength
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KR1019930031973A
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Korean (ko)
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KR950018305A (en
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김용석
박헌진
장정근
강래성
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김준웅
주식회사선경인더스트리
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L81/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
    • C08L81/04Polysulfides

Abstract

Polyarylene sulfide resin composition having improved bending elasticities, appearances, molding processabilities and fluidities, comprises: 1)30-60 wt.% of polysulfide resin having an inherent viscosity of 0.18-0.21 at 205 deg. C, in 1-chloronaphthalene solvent, a melt index of 20-400 g/10 min at 305 deg. C, 2160 g load, 2)30-50 wt.% of fibrous fillers such as glass fiber or carbon fiber to add a mechanical strength and heat resistant properties, 3)1-40 wt.% of inorganic reinforcement agents such as calcium carbonate, active silica or mica to increase a mechanical strength, heat resistant properties, bending elasticities, 4)0.5-10 wt.% of low density polyethylene, 5)0.3-2 wt.% of a hindered phenolic stabilizer with 0.941-0.965 of density by ASTM D1505.

Description

폴리아릴렌 설파이드 수지조성물Polyarylene Sulfide Resin Composition

본 발명은 폴리아릴렌 설파이드 수지조성물에 관한 것으로서, 더욱 상세하게는 공지의 폴리아릴렌 설파이드 수지조성물에 공정보조제와 열안정제를 첨가하므로써 성형성을 개선시킨 폴리아릴렌 설파이드 수지조성물에 관한 것이다.The present invention relates to a polyarylene sulfide resin composition, and more particularly, to a polyarylene sulfide resin composition having improved moldability by adding a process aid and a heat stabilizer to a known polyarylene sulfide resin composition.

일반적으로 폴리아릴렌 설파이드 수지는 내열성이 뛰어나고, 대부분의 용제에 대하여 내화학성을 가지며, 다른 열가소성 수지에 비하여 치수 안정성이 우수하기 때문에 전기 및 전자부품 뿐만 아니라 정밀 사출이 요구되는 커넥터, 보빈류 및 기어에 이르기까지 다양한 산업분야에 적용될 수 있다. 더구나 최근 자동차 부품 등으로 그 사용범위가 확대됨에 따라 폴리아릴렌 설파이드 수지에 대한 높은 기계적 강도가 요구되고 있다.Generally, polyarylene sulfide resins have excellent heat resistance, chemical resistance to most solvents, and excellent dimensional stability compared to other thermoplastic resins, so that connectors, bobbins, and gears requiring precise injection as well as electrical and electronic parts are required. It can be applied to various industries. In addition, as the use range of automobile parts is expanded recently, high mechanical strength of polyarylene sulfide resin is required.

폴리아릴렌 설파이드 수지를 단독으로 사용할 경우 내화학성 및 난연성은 우수하지만 내열성 및 기계적 강도가 부족하기 때문에 수지의 성능을 개선하기 위해서 통상적으로 섬유상 충전제를 첨가한다.When using polyarylene sulfide resin alone, fibrous fillers are usually added to improve the performance of the resin because of excellent chemical resistance and flame retardancy but lack of heat resistance and mechanical strength.

이와 관련하여 일본특허공개 평1-81855호와 국내특허공개 제91-20113호에는 폴리아릴렌 설파이드 수지에 유리섬유와 무기보강재 등을 첨가하여 강도 및 전기적 특성을 개선시키는 방법이 개시되어 있다. 그러나, 이와같은 종래의 방법에 의하면 기계적 강도 등은 개선시킬 수 있었지만, 컴파운딩(Compounding) 및 사출공정시 열에 의해 유동성이 저하되는 문제점이 있다.In this regard, Japanese Patent Laid-Open No. Hei 1-81855 and Korean Patent Laid-Open No. 91-20113 disclose a method of improving strength and electrical properties by adding glass fibers and inorganic reinforcing materials to polyarylene sulfide resin. However, according to such a conventional method, although mechanical strength and the like can be improved, there is a problem in that fluidity is lowered by heat during compounding and injection processes.

특히, 폴리아릴렌 설파이드 수지를 이용한 두께가 매우 얇은 부품을 성형하거나 폴리아릴렌 설파이드 수지의 재생품을 사용할 경우 열에 대한 점도증가 과정은 필연적으로 수반되며, 커넥터 등의 전자부품 성형시 벽의 두께가 매우 얇은 부분은 이러한 점도 저하에 의해 미성형의 발생이나 강도저하 등의 심각한 문제를 야기하게 된다.In particular, when molding a very thin part using polyarylene sulfide resin or using a regenerated product of polyarylene sulfide resin, an increase in viscosity for heat is inevitably involved, and a wall thickness when forming an electronic part such as a connector is very large. The thin portion causes serious problems such as the occurrence of unmolding or a decrease in strength due to such a decrease in viscosity.

따라서, 본 발명자들은 상기와 같은 종래발명의 문제점을 극복하기 위하여 노력한 결과 종래의 폴리아릴렌 설파이드 수지에 공정 보조제 및 열안정제 등을 첨가함으로써 본발명을 완성하였다.Accordingly, the present inventors have completed the present invention by adding a process aid and a heat stabilizer to the conventional polyarylene sulfide resin as a result of trying to overcome the problems of the conventional invention as described above.

본 발명은 폴리아릴렌 설파이드 수지 제조시 공정 보조제 및 열안정제를 첨가하므로써 굴곡탄성율, 사출물로서의 외관, 성형성 및 유동성을 개선시킨 폴리아릴렌 설파이드 수지조성물을 제공하는데 그 목적이 있다.An object of the present invention is to provide a polyarylene sulfide resin composition having improved flexural modulus, appearance as an injection molding, formability and fluidity by adding a process aid and a heat stabilizer in preparing a polyarylene sulfide resin.

이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.

본 발명은 폴리아릴렌 설파이드 수지에 섬유상 충전제와 무기 보강제가 함유되어 있는 폴리아릴렌 설파이드 수지조성물에 있어서, 폴리아릴렌 설파이드 수지 30∼60 중량%에 섬유상 충전제 30∼50 중량%, 무기 보강제 1∼40 중량%, 고밀도 폴리에틸렌 0.5∼10 중량% 및 힌더드 페놀계 안정제 0.3∼2 중량%로 이루어진 것을 그 특징으로 한다.The present invention relates to a polyarylene sulfide resin composition in which a polyarylene sulfide resin contains a fibrous filler and an inorganic reinforcing agent, wherein the polyarylene sulfide resin is 30 to 60 wt%, a fibrous filler 30 to 50 wt%, and an inorganic reinforcing agent 1 to It is characterized by consisting of 40% by weight, 0.5 to 10% by weight of high density polyethylene and 0.3 to 2% by weight of the hindered phenolic stabilizer.

이와같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.

본 발명은 폴리아릴렌 설파이드 수지에 섬유상 충전제, 무기보강제, 공정 보조제 및 열안정제를 첨가시킨 성형성이 우수한 폴리아릴렌 수지조성물에 관한 것으로서, 본 발명에서 사용되는 폴리아릴렌 설파이드 수지는 다음에 표시한 방향족 단량체중 둘이상을 공중합한 것으로 p-페니렌 설파이드 반복단위가 80 몰% 이상으로 이루어진 공중합체를 사용한다.The present invention relates to a polyarylene resin composition having excellent moldability by adding a fibrous filler, an inorganic reinforcing agent, a process aid, and a heat stabilizer to a polyarylene sulfide resin, and the polyarylene sulfide resin used in the present invention is shown below. Copolymers of two or more of one aromatic monomers are used in which a copolymer composed of 80 mol% or more of p-phenylene sulfide repeating units is used.

상기와 같은 폴리페닐렌 설파이드 수지는 공지방법(국내특허출원 제91-16662호)에 의해 제조된 것등을 사용하되 1-클로로나프탈렌을 용매로 205℃에서 고유점도(Inherent Viscosity, I.V)가 0.18∼0.21, 용융지수(Melt Index, M.I)가 305℃ 2160g의 하중에서 20∼400g/10분인 수지를 사용하는 것이 바람직한데, 여기서 용융지수가 20미만일 경우 혼화성 및 사출공정상 어려움이 따르고 400을 초과하면 강도가 저하되는 등의 문제가 있다.The polyphenylene sulfide resin as described above may be prepared by a known method (Domestic Patent Application No. 91-16662) and the like, but the inherent viscosity (Inherent Viscosity, IV) is 0.18 at 205 ° C. using 1-chloronaphthalene as a solvent. It is preferable to use a resin having a melt index (Melt Index, MI) of 20 to 400 g / 10 min at a load of 2160 g at 305 ° C., where the melt index is less than 20, which leads to miscibility and difficulty in the injection process, and 400 If it exceeds, there exists a problem of intensity | strength falling.

또한 섬유상 충전제는 우수한 기계적 강도와 내열성을 부여하기 위하여 30∼50 중량% 첨가하는 바, 본 발명에는 유리섬유, 탄소섬유 등을 사용하는 것이 좋고 이중에도 특히 바람직하기는 유리섬유를 사용하는 것이다.In addition, the fibrous filler is added to 30 to 50% by weight in order to give excellent mechanical strength and heat resistance, it is preferable to use the glass fiber, carbon fiber and the like in the present invention, and particularly preferably the glass fiber.

특히 표면처리제로 처리된 섬유상 충전제를 사용하던 섬유상 충전제와 수지와의 접착성이 좋아질 뿐만 아니라 물에 대한 저항성 및 열팽창계수 등의 물성이 우수한 제품을 얻을 수 있다. 표면처리된 섬유상 충전제로는 3-글리시드옥시프로필트리메톡시실란(3-Glycidoxypropyltrimethoxysilane), 3-머켑토프로필트리메톡시실란(3- Mercaptopropyltrimethoxysilane ), 3-(디에틸아미노)프로필트리메톡시실란 [3-(Diethylamino )propyltrimethoxysilane ), 3-N-(트리메톡시실릴프로필)폴리에틸 렌이미[3-N-(Trimethoxy-silylpropyl)polyethylenimine)등을 예로 들 수 있다.In particular, the adhesion between the fibrous filler and the resin, which used the fibrous filler treated with the surface treatment agent, is improved, and a product having excellent physical properties such as water resistance and thermal expansion coefficient can be obtained. Surface-treated fibrous fillers include 3-glycidoxypropyltrimethoxysilane, 3-meraptopropyltrimethoxysilane, and 3- (diethylamino) propyltrimethoxysilane [3- (Diethylamino) propyltrimethoxysilane), 3-N- (trimethoxysilylpropyl) polyethyleneim [3-N- (trimethoxy-silylpropyl) polyethylenimine), and the like.

섬유상 충전제의 함량이 30 중량% 미만일 경우 목적하는 기계적 강도를 얻을 수 없고, 50 중량%를 초과하면 오히려 보강 효과가 떨어지고 성형성이 나빠진다.If the content of the fibrous filler is less than 30% by weight, the desired mechanical strength cannot be obtained. If the content of the fibrous filler is more than 50% by weight, the reinforcing effect is deteriorated and moldability is deteriorated.

한편, 본 발명에서는 우수한 기계적 강도 및 내열성 특히 굴곡탄성율을 증가시킬 목적으로 무기보강제를 첨가하는 바, 무기보강제로는 탄산칼슘, 활석, 실리카 또는 마이카 등을 사용할 수 있으며 이들은 조성물의 총중량을 기준으로 1∼40 중량%, 바람직하게는 10∼30 중량% 사용한다. 만일 무기보강제 사용량이 1 중량% 미만이면 목적하는 기계적 보강효과가 떨어지고, 40 중량%를 초과 사용하면 인장강도 등이 저하된다.Meanwhile, in the present invention, an inorganic reinforcing agent is added for the purpose of increasing excellent mechanical strength and heat resistance, in particular, flexural modulus. As the inorganic reinforcing agent, calcium carbonate, talc, silica, or mica may be used, and these are based on the total weight of the composition. 40 weight%, Preferably it is 10-30 weight%. If the amount of the inorganic reinforcing agent is less than 1% by weight, the desired mechanical reinforcing effect is inferior, and when used in excess of 40% by weight, the tensile strength is lowered.

본 발명에서는 특징적으로 전체조성물을 기준으로하여 공정보조제로서 고밀도 폴리에틸렌 0.5∼10 중량%, 그리고 열안정제로서 힌더드 펜놀류(hinderedphenols)를 0.3∼2 중량%를 사용한다. 고밀도 폴리에틸렌은 ASTM D1505에 의해 측정한 밀도가 0.941∼0.965인 것을 사용한다.In the present invention, 0.5 to 10% by weight of high density polyethylene is used as a process aid, and 0.3 to 2% by weight of hindered phenols is used as a heat stabilizer. The high density polyethylene uses the density of 0.941-0.965 measured by ASTMD1505.

또한, 공정보조제의 함량이 0.5 중량% 미만이면 목적하는 성형성 개선의 효과가 없고, 10 중량%를 초과하면 공정중에 분해 등의 문제가 발생하여 성형품의 외관 뿐만 아니라 기계적 강도 등이 현저히 저하되는 문제가 발생한다. 그리고 열안정제는 본 발명의 필수성분으로서 컴파운딩(Compounding)이나 사출 공정중 발생하는 점도저하의 문제를 최소화시키는 역할을 하며, 그 종류로는 힌더드 페놀류(hindered phenols ); 0.3~20 중량% 사용한다. 그 사용량에 있어서도 0.3 중량% 미만이면 열안정 효과가 떨어지며, 2 중량%를 초과하면 강도저하의 문제가 있다.In addition, if the content of the process aid is less than 0.5% by weight, there is no effect of improving the desired moldability, and if it exceeds 10% by weight, problems such as decomposition may occur during the process, and the appearance and mechanical strength of the molded article may be significantly reduced. Occurs. And the heat stabilizer as an essential component of the present invention serves to minimize the problem of viscosity decrease during compounding (compounding) or injection process, such as hindered phenols (hindered phenols); 0.3 to 20% by weight is used. Even if the amount is less than 0.3% by weight of the thermal stability effect is lowered, if it exceeds 2% by weight there is a problem of strength degradation.

본 발명에서는 상기의 필수성분 이외에도 목적에 따라 안료, 윤활제, 해제 및 주형부식 방지제 등을 첨가하여 사용할 수도 있다.In the present invention, in addition to the essential components described above, pigments, lubricants, anti-release and anti-corrosive agents may be added and used depending on the purpose.

상기에서 상술한 바와같이 본발명에 따라 제조된 폴리아릴렌 설파이드 수지성물은 기계적 강도 등의 물성은 그대로 유지하면서도 사출성형시 기존제품에 비하여 이형성이 좋기 때문에 성형기간의 단축, 생산성의 증가 및 유동성이 증가되어 성형성이 현저히 개선시키는 효과가 있다.As described above, the polyarylene sulfide resin product prepared according to the present invention has good releasability compared to the existing product during injection molding, while maintaining physical properties such as mechanical strength, thereby shortening the molding period, increasing productivity and fluidity. There is an effect of increasing the moldability significantly.

이하, 본발명을 실시예에 의거하여 상세히 설명하면 다음과 같은 바, 본 발명의 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the following Examples, which are not limited by the Examples of the present invention.

참고실시예Reference Example

교반기, 탈수탑이 부착되어 있는 내용적 1.7l의 가압 반응기에 황화나트륨 255.9g(2.0mol), N-메틸피롤리돈(이하, NMP라 함) 500ml를 투입하고 질소 치환하였다. 질소 기류하에 가압반응기의 내용물을 승온하고 160℃에서 1시간 가열한 후에 계속 205℃까지 승온하여 증류하므로써 물 76g과 NMP 8g을 유출시켰다.255.9 g (2.0 mol) of sodium sulfide and 500 ml of N-methylpyrrolidone (hereinafter referred to as NMP) were introduced into a pressurized reactor equipped with a stirrer and a dehydration tower with a volume of 1.7 l, and nitrogen-substituted. The contents of the pressure reactor were heated up under nitrogen stream, heated at 160 ° C. for 1 hour, and then heated up to 205 ° C. for distillation to distill 76 g of water and 8 g of NMP.

가압반응기의 내부온도를 170℃로 냉각한 후에, p-디클로로벤젠 294.0을 NMP 300ml에 용해시킨 용액을 상기 탈수물에 첨가하고 가압반응기를 밀폐하고 250℃로 승온해서 3시간 중합반응을 행하였다. 이때 반응압력은 5.0kgf/cm2이었다. 반응종료 후 실온부근까지 냉각한 다음 덮개를 열고 슬러리 형상의 반응생성물을 꺼내고 이것을 2l의 물로 2회 세정하고 진공속에서 온도 120℃로 건조하였다. 얻어진 폴리아릴렌 설파이드의 고유점도(I.V)는 1-클로로나프탈렌 용매에서 205℃, 0.4g/l의 농도로 측정한 결과 0.18이고 용융지수(M.I)는 305℃ 2160g에서 측정한 결과 360g/10분이었다.After the internal temperature of the pressure reactor was cooled to 170 ° C., a solution in which p-dichlorobenzene 294.0 was dissolved in NMP 300 ml was added to the dehydration product, the pressure reactor was sealed, and the temperature was raised to 250 ° C. for polymerization for 3 hours. At this time, the reaction pressure was 5.0kgf / cm 2 . After the completion of the reaction, the reaction mixture was cooled to room temperature, and then the lid was opened. The slurry-like reaction product was taken out and washed twice with 2 l of water, and dried at 120 ° C. in a vacuum. The intrinsic viscosity (IV) of the obtained polyarylene sulfide was 0.18 as measured at a concentration of 0.4 g / l at 205 ° C. in a 1-chloronaphthalene solvent and the melt index (MI) was measured at 2160 g at 305 ° C. for 360 g / 10 min. It was.

상기에서 얻어진 폴리아릴렌 설파이드 분말을 가열로에서 250℃로 약 6시간 열처리하면, M.I가 30 내지 200g/10분인 갈색의 폴리아릴렌 설파이드 분말을 얻을 수 있다.When the polyarylene sulfide powder obtained above is heat-treated at 250 ° C. for about 6 hours in a heating furnace, a brown polyarylene sulfide powder having an M.I of 30 to 200 g / 10 minutes can be obtained.

상기에서 고유점도(I.V)는 1-클로로나프탈렌을 용매로 하여 205℃, 0.4g/l기의 농도에서 측정하있으며, M.I는 305℃, 2160g의 하중에서 측정한 값이다.Intrinsic viscosity (I.V) is measured at a concentration of 205 ℃, 0.4g / l group with 1-chloronaphthalene as a solvent, M.I is measured at a load of 305 ℃, 2160g.

실시예 1∼4Examples 1-4

다음 표에 나타난 각각의 사용량으로 폴리아릴렌 설파이드(일반적인 제조 공정에 의해 제조된 폴리아릴렌 설파이드, ASTM D1238 시험방법에 따라 측정된 M.I가 20∼200g/10분)에 공정보조제로서 고밀도의 폴리에틸렌과 열안정제를 첨가하고 헨셀(Henschel)혼합기로 약 10분간 혼합했다. 여기에 길이 3mm의 유리섬유와 탄산칼슘을 상기의 혼합물에 넣고 혼합하였다.Polyarylene sulfide (polyarylene sulfide manufactured by a general manufacturing process, 20-200 g / 10 min as measured according to ASTM D1238 test method) was used for each of the amounts shown in the following table. Heat stabilizer was added and mixed for about 10 minutes with a Henschel mixer. The glass fiber and calcium carbonate of 3 mm in length were put into this mixture, and it mixed.

이렇게 얻어진 혼합물을 실린더 온도 320℃의 압출기에서 용융 혼합시키고 펠릿화하여 사출성형기를 통하여 필요한 모양의 시편을 성형하였다.The mixture thus obtained was melt mixed and pelletized in an extruder at a cylinder temperature of 320 ° C. to form a specimen of a required shape through an injection molding machine.

비교예 1∼4Comparative Examples 1 to 4

다음 표에 나타낸 각각의 사용량으로 실시예 1과 동일한 방법에 시편을 제조하되 공정보강제와 열안정제를 사용하지 않고 제소한 예이다.Samples were prepared in the same manner as in Example 1 with the respective amounts shown in the following table, but without the use of process enhancers and thermal stabilizers.

실험예Experimental Example

상기 실시예 1∼4와 비교예 1∼4에서 제작된 시편을 48시간동안 실험실 조건에서 방치시킨 후 ASTM 시험법에 규정된 일반적인 방법에 따라 인장강도, 굴곡강도, 굴곡탄성율의 물성을 축정하였다. 수지의 유동성을 비교하기 위하여 나선형으로 퍼저나가는 모양(모기향 모양)의 지름이 6mm이 반원형의 금형을 이용하여 실린더온도와 압력을 고정시킨 후 수지가 자라난 길이를 측정하였다. 또한, 수지의 열안정성을 비교하기 위하여 ASTM D1238 시험방법에 준하여 용융지수가(Melt Indexer)에서 체류시간을 각각 10분, 30분으로 하여 측정하였다. 그 결과는 다음 표에 나타내었다.After the specimens prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were left under laboratory conditions for 48 hours, the physical properties of tensile strength, flexural strength, and flexural modulus were determined according to the general method specified in the ASTM test method. In order to compare the fluidity of the resin, the length of the resin was measured after fixing the cylinder temperature and pressure using a semi-circular mold having a diameter of 6 mm in a spiral shape (mosquito flavor). In addition, in order to compare the thermal stability of the resin in accordance with the ASTM D1238 test method, the residence time in the melt index (Melt Indexer) was measured as 10 minutes, 30 minutes respectively. The results are shown in the following table.

[표] [table]

Claims (2)

폴리아릴렌 설파이드 수지에 섬유상 충전제, 무기 보강제, 폴리에틸렌 및 열안정제가 함유되어 있는 폴리아릴렌 설파이드 수지조성물에 있어서, 폴리아릴렌 설파이드 수지 30∼60 중량%에 섬유상 충전제로서 유리섬유 30∼50 중량% 무기 보장제 1∼40 중량%, 밀도가 0.941∼0.965인 고밀도 폴리에틸렌 0.5∼10 중량% 및 힌더드 페놀계 열안정제 0.3∼2 중량%로 이루어진 것을 특징으로하는 폴리아릴렌 설파이드 수지조성물.In a polyarylene sulfide resin composition in which a polyarylene sulfide resin contains a fibrous filler, an inorganic reinforcing agent, polyethylene, and a heat stabilizer, 30 to 60 wt% of a polyarylene sulfide resin and 30 to 50 wt% of glass fibers as a fibrous filler A polyarylene sulfide resin composition comprising 1 to 40% by weight of an inorganic guarantee agent, 0.5 to 10% by weight of high density polyethylene having a density of 0.941 to 0.965, and 0.3 to 2% by weight of a hindered phenolic heat stabilizer. 제1항에 있어서, 상기 폴리아릴렌 설파이드 수지는 p-페닐렌 설파이드 수지인 것을 특징으로 하는 폴리아릴렌 설파이드 수지조성물.The polyarylene sulfide resin composition according to claim 1, wherein the polyarylene sulfide resin is p-phenylene sulfide resin.
KR1019930031973A 1993-12-31 1993-12-31 Polyarylene sulfide resin composition KR0128540B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180039758A (en) * 2015-09-11 2018-04-18 포리프라스틱 가부시키가이샤 A method of suppressing a decrease in bending fracture deformation of the resin composition and the resin composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180039758A (en) * 2015-09-11 2018-04-18 포리프라스틱 가부시키가이샤 A method of suppressing a decrease in bending fracture deformation of the resin composition and the resin composition

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