KR960006628B1 - Thermoplastic resin compositions - Google Patents
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- KR960006628B1 KR960006628B1 KR1019920014631A KR920014631A KR960006628B1 KR 960006628 B1 KR960006628 B1 KR 960006628B1 KR 1019920014631 A KR1019920014631 A KR 1019920014631A KR 920014631 A KR920014631 A KR 920014631A KR 960006628 B1 KR960006628 B1 KR 960006628B1
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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
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
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- C—CHEMISTRY; METALLURGY
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Abstract
Description
본 발명은 자동차, 전자·전기 기기등의 외장관 및 부품등에 이용될 수 있으며, 내충격성 뿐만 아니라 내열성, 성형가공성, 내유성, 치수 치수안정성이 우수한 폴리페닐렌에테르(POLYPHENYLENE ETHER)수지와 폴리아미드(POLYAMIDE)수지를 주재로 하는 열가소성 수지 조성물에 관한 것으로, 좀 더 구체적으로는 폴리페닐렌에테르 5∼95중량% 및 폴리아미드 6 또는 66 95∼5중량%로 구성되는 수지조성물 100중량부에 대하여 하기 일반식(I)로 표현되는 옥사졸 화합물 0.01∼5중량부, 스티렌-에틸레프로필렌 짝 결합이 아닌 (Non-conjugated) 무수말레인산 테트라폴리머엘라스토머 1∼20중량부와 트리벤질포스핀 0.01∼5중량부를 첨가한 열가소성 수지조성물에 관한 것이다.The present invention can be used in exterior pipes and parts such as automobiles, electronic and electrical equipment, and polyphenylene ether resin and polyamide having excellent heat resistance, molding processability, oil resistance, and dimensional dimensional stability as well as impact resistance. POLYAMIDE) The present invention relates to a thermoplastic resin composition based on a resin, and more specifically, to 100 parts by weight of a resin composition composed of 5 to 95% by weight of polyphenylene ether and 6 or 66 to 95 to 5% by weight of polyamide. 0.01 to 5 parts by weight of the oxazole compound represented by the general formula (I), 1 to 20 parts by weight of non-conjugated maleic anhydride tetrapolymer elastomer and 0.01 to 5 parts by weight of tribenzylphosphine It relates to a thermoplastic resin composition to which parts are added.
상기식에서, R1과 R2는 각각 동일 또는 상이한 것으로, 탄소수 1∼3개의 알킬기 또는 아미노기이다.In formula, R <1> and R <2> is the same or different, respectively, and is a C1-C3 alkyl group or an amino group.
일반적으로 자동차, 전기·전자 기기동의 외장판은 기계적 성질, 내열성, 치수안정성, 내약품성, 외관등이 우수한 것이 요구되며 특히, 자동차 분야에서 휠 커버(WHEEL COVER), 펜더(FENDER)류는 기존 개질보다 가벼운 재질로 대채되어 경량화되고 있는 실정이다.In general, the exterior plates of automobiles, electrical and electronic devices are required to have excellent mechanical properties, heat resistance, dimensional stability, chemical resistance, and appearance, and in particular, wheel covers and fenders have been modified in the automotive field. It is a situation that is lightened by being replaced with a lighter material.
한편, 폴리페닐렌에테르는 기계적성질, 내열성, 전기적성질, 치수안정성, 내열수성이 우수한 반면에 용융점도가 높기 때문에 가공성이 나쁘며, 내충격성이 비교적 불량하고, 폴리아미드는 내열성, 강성, 내유성등은 우수하지만 흡수성이 커서 장기간 사용시 물성 변화 및 치수 변화가 현저히 떨어지는 단점이 있었다.On the other hand, polyphenylene ether has excellent mechanical properties, heat resistance, electrical properties, dimensional stability, and hot water resistance, but has poor workability due to its high melt viscosity, relatively poor impact resistance, and polyamide has high heat resistance, rigidity, oil resistance, and the like. Although excellent in water absorption, there was a drawback that the physical properties and the dimensional changes were significantly decreased during long-term use.
상술한 문제점을 해결하기 위해 종래에는 폴리페닐렌에테르와 폴리아미드를 단순하게 혼합 사용하였지만 혼합시 서로 상용성이 없어 성형물의 기계적 물성 특히, 내충격성 면에서 혼합전 수지의 충격강도 값보다 오히려 감소되는 경향을 보일 뿐만 아니라 폴리페닐렌에테르와 폴리아미드는 각각의 용융 점도차가 현저하기 때문에 압출시 스트렌드(STRAND)형성이 잘안되는 문제점이 나타난다.Conventionally, in order to solve the above problems, polyphenylene ether and polyamide have been simply mixed. However, they are not compatible with each other when mixing, so that the impact strength of the resin before mixing is reduced in terms of mechanical properties, in particular, impact resistance. In addition to showing a tendency, polyphenylene ether and polyamide have a problem in that the formation of a strand during extrusion is difficult because the difference in melt viscosity is remarkable.
따라서, 상기 문제점을 해결하여 폴리페닐렌에테르와 폴리아미드의 상용성을 증진시키고 내충격성을 향상시키는 방법이 많이 제안되고 있다. 예를들어, 일본특공소60-11966호에서는 분자내에 탄소-탄소 이중결합 또는 삼중결합 및 카르본산기, 산무수물, 산아미드기, 이미드기, 카르본산에스테르기, 에폭시기, 아미노기 또는 수산기를 동시에 갖고 있는 화합물을 배합하는 상용화 기술을 기재하고 있지만, 미흡하였고, 일본특개소57-10642호에서는 액상디엔계 중합체를 배합하는 기술로 충격강도를 향상시키고자 하였으나 다소 불충분하였으며, 일본특개소56-47432호에서는 분자내에 실란화합물 및 2가 페놀과 에피크로로하이드린과의 축합 고분자량체를 배합하는 방법을 기재하고 있고 일본특개소60-58463호에서는 유기 인산에스테르를 배합하는 방법을 기재하고 있으나 내충격성을 향상시키는데는 다소 문제가 되었다.Therefore, many methods for improving the compatibility and impact resistance of polyphenylene ether and polyamide have been proposed. For example, Japanese Patent Application No. 60-11966 has a carbon-carbon double bond or a triple bond and a carboxylic acid group, an acid anhydride, an acid amide group, an imide group, a carboxylic acid ester group, an epoxy group, an amino group or a hydroxyl group in a molecule at the same time. Although a commercialization technique for compounding a compound is described, it is insufficient. In Japanese Patent Laid-Open No. 57-10642, a technique for blending a liquid diene polymer was used to improve the impact strength, but it was somewhat insufficient. Describes a method for blending a silane compound and a condensation high molecular weight compound of divalent phenol and epichlorohydrin in a molecule. Japanese Patent Application Laid-Open No. 60-58463 describes a method for blending an organic phosphate ester. It was somewhat problematic to improve.
또한, 미국특허 제4,671,915호에서는 폴리페닐렌에테르와 폴리아미드 알로이(ALLOY)의 충격강도를 향상시키기 위해 코아(CORE)-쉘(SHELL)구조로된 충격강화제를 사용하였으나 폴리페닐렌에테르와 폴리아미드가 서로 상용성이 좋지 않아 충격강도의 효과가 크게 향상되지 않았으며, 미국특허 제4,642,358호에서는폴리페닐렌에테르와 폴리아미드의 상용성을 좋게하기 위하여 트리맬릭틱안하이드라이드산 크로라이드(TRIMELLITIC ANHYDRIDE ACID CHLORIED)를 사용하였고, 미국특허 제4,654,405호에서는 상용성 및 내충격성을 향상시키기 위해서 각각 말레익안하이드라이드(MALEIC ANHYDRIDE)와 스티렌-부틸렌-스티렌 디블록(DlBLOCK) 공중합체를 사용하였으나 충격강도가 문제가 되었으며, 미국특허 제4,642,358호에서는 충격강도를 향상시키기 위하여 스티렌-에틸렌부틸렌-스티렌 트리블록(TRIBLOCK) 공중합체를 사용하고 있지만 효과가 저조하였다.In addition, US Pat. No. 4,671,915 uses an impact enhancer having a core-shell structure to improve the impact strength of polyphenylene ether and polyamide alloy (ALLOY), but polyphenylene ether and polyamide The effect of impact strength was not greatly improved due to poor compatibility with each other, and US Pat. No. 4,642,358 discloses trimellitic anhydride ACID to improve compatibility of polyphenylene ether and polyamide. CHLORIED) and US Pat. No. 4,654,405 used MALEIC ANHYDRIDE and Styrene-Butylene-Styrene Diblock (DlBLOCK) copolymers to improve compatibility and impact resistance, respectively. Problem, and US Pat. No. 4,642,358 describes styrene-ethylenebutylene-styrene tree to improve impact strength. While the use of the lock (TRIBLOCK) copolymer was poorly effective.
따라서, 본 발명의 목적은 내충격성 뿐만아니라 내열성, 성형가공성, 내유성, 치수안정성이 우수하여 자동차, 전자·전자 기기등의 외장판 및 부품등에 광범위하게 사용될 수 있는 폴리페닐렌에테르수지와 폴리아미드 수지 주재의 열가소성 수지 조성물을 제공하는데 있다.Accordingly, an object of the present invention is not only impact resistance but also excellent heat resistance, molding processability, oil resistance, dimensional stability, and polyphenylene ether resin and polyamide resin which can be widely used in exterior plates and parts of automobiles, electronics and electronic devices, etc. It is to provide a thermoplastic resin composition of the subject.
상기 목적을 달성하기 위하여 본 발명에서는 옥사졸화합물을 사용하여 폴리페닐렌에테르와 폴리아미드알로이(ALLOY)에서 상용성을 향상시켰으며, 에틸렌프로필렌 짝 결합이 아닌(Non-conjugated) 무수말레인산테트라폴리머엘라스토머와 스티렌-에틸렌-부틸렌-스티렌트리블록 공중합체를 함께 사용하여 상온 및 저온에서의 충격강도를 향상시켰고 트리벤질포스핀(TRIBENZYL PHOSPHINE)을 사용하여 유동성을 향상시켰다. 또한, 본 발명에서는 치수안정성을 더욱 향상시키기 위해 올레스토나이트(WOLLESTONITE)를 사용 가능하며, 열적인 안정성을 부여하기 위하여 인계 화합물 및 금속염 등을 사용할 수 있고, 유리 섬유, 탄소 섬유, 이형제, 안료등의 기타 첨가물을 첨가할 수도 있다.In order to achieve the above object, in the present invention, the compatibility of polyphenylene ether and polyamide alloy (ALLOY) was improved by using an oxazole compound, and non-conjugated maleic anhydride tetrapolymer elastomer was used. And styrene-ethylene-butylene-styrene triblock copolymer were used together to improve the impact strength at room temperature and low temperature, and tribenzyl phosphine (TRIBENZYL PHOSPHINE) to improve the fluidity. In addition, in the present invention, olestonite may be used to further improve dimensional stability, and phosphorus-based compounds and metal salts may be used to impart thermal stability, and glass fibers, carbon fibers, mold release agents, pigments, and the like. Other additives may be added.
본 발명을 좀 더 상세히 설명하면 다음과 같다.The present invention is described in more detail as follows.
본 발명의 열가소성 수지조성물은 폴리페닐렌에테르 5∼95중량% 및 폴리아미드 6 또는 66, 95∼5중량%로 구성되는 수지조성물 100중량부에 대하여 일반식(I)로 표현되는 옥사졸화합물 0.01∼5중량부, 스티렌-에틸 렌부틸렌-스티렌트리블록 공중합체 1∼40중량부, 폴리올레핀계 엘라스토머로서 에틸렌프로필렌 짝 결합이 아닌 무수말레인산테트라폴리머 엘라스토머 1∼20중량부와 트리벤질포스핀 0.01∼5중량부를 첨가한것이 다.The thermoplastic resin composition of the present invention is an oxazole compound represented by the general formula (I) 0.01 to 100 parts by weight of the resin composition composed of 5 to 95% by weight of polyphenylene ether and 6 or 66, 95 to 5% by weight of polyamide. To 5 parts by weight, 1 to 40 parts by weight of styrene-ethylene butylene-styrene triblock copolymer, 1 to 20 parts by weight of maleic anhydride tetrapolymer elastomer, and tribenzylphosphine, which are not ethylene propylene pair bonds as polyolefin elastomers. 5 parts by weight is added.
상기식에서, R1과 R2는 각각 동일 또는 상이한 것으로, 탄소수 1∼3개의 알킬기 또는 아미노기이다.In formula, R <1> and R <2> is the same or different, respectively, and is a C1-C3 alkyl group or an amino group.
본 발명에서 사용될 수 있는 폴리폐닐렌에테르는 하기의 일반식(II)를 갖는 것이다.The polyphenylene ether that can be used in the present invention has the following general formula (II).
상기식에서, R3, R4, R5및 R6는 각각 수소, 적어도 탄소수가 1개 이상인 알킬기 또는 알콕시기이며, N은50이상의 정수이다.Wherein R 3 , R 4 , R 5 and R 6 are each hydrogen, an alkyl group or an alkoxy group having at least one carbon number, and N is an integer of 50 or more.
폴리페닐렌에테르중 바람직한 것은 R3및 R4는 탄소수가 1∼4인 알킬기이고, R5및 R6는 수소원자 또는 탄소수가 1∼4인 알킬기인 화합물로서 예를들면, 폴리(2,6-디메틸-1,4-페닐렌)에테르, 폴리(2-메틸-6-에틸-1,4-페닐렌)에테르, 폴리(2-메틸-6-프로필-1,4-페닐렌)Preferred among the polyphenylene ethers are compounds in which R 3 and R 4 are alkyl groups having 1 to 4 carbon atoms, and R 5 and R 6 are hydrogen atoms or alkyl groups having 1 to 4 carbon atoms, for example, poly (2,6). -Dimethyl-1,4-phenylene) ether, poly (2-methyl-6-ethyl-1,4-phenylene) ether, poly (2-methyl-6-propyl-1,4-phenylene)
에테르, 폴리(2-메틸-6-프로필-1,4-페닐렌)에테르가 바람직하며 특히,(2,6디-디메탈-1,4-페닐렌)에테를가 가장 바람직하다. 폴리페닐렌에테르의 고유점도는 25℃의 클로로포름용액에서 0.40∼0.60dl/g, 더욱 좋기로는 0.45∼0.49dl/g인 것이 효과적이며, 함량은 주재성분의 5∼95중량%, 바람직하게는 40∼60중량%인 것이 효과적인다.Preference is given to ether, poly (2-methyl-6-propyl-1,4-phenylene) ether, in particular (2,6di-dimetal-1,4-phenylene) ether. The intrinsic viscosity of polyphenylene ether is effectively 0.40 to 0.60 dl / g, more preferably 0.45 to 0.99 dl / g in a chloroform solution at 25 ° C., and the content is 5 to 95% by weight of the main component, preferably It is effective that it is 40 to 60 weight%.
폴리아미드 수지는 디아민과 디카르본산과의 중축합반응에 의해 얻어지며, 이중에서도 아디핀산(ADIPICACID과 헥사메틸렌디아민(HEXA METHYLENE DIAMINE)을 중축합시킨 나일론 66가 바람직하고, 수평균 분자량이 10,000∼30,000, 더욱 좋기로는 16,000∼22,000인 것이 효과적이다. 또한, 말단(TERMINTAL) 카르복실(CARBOXYL)기/말단아민(AMINE)기의 비가 0.5∼2.0, 더욱 좋기로는 1.0∼1.6인 것이 바람직하며,함량은 95∼5중량%, 더욱 좋기로는 50∼30중량%가 바람직하다.Polyamide resin is obtained by polycondensation reaction of diamine and dicarboxylic acid, of which nylon 66 obtained by polycondensation of adipic acid (ADIPICACID and hexamethylenediamine) is preferable, and the number average molecular weight is 10,000 to 10,000. 30,000, more preferably 16,000 to 22,000, and the ratio of the terminal carboxyl / terminal amine group is preferably 0.5 to 2.0, more preferably 1.0 to 1.6. The content is 95 to 5% by weight, more preferably 50 to 30% by weight.
폴리페닐에테르와 폴리아미드 수지는 서로 상용성이 없어 하기 일반식(I) 옥사졸 화합물인 상용화제를사용하여 상용성을 증진시켰다.The polyphenyl ether and the polyamide resin were not compatible with each other, and thus the compatibility was enhanced by using a compatibilizer, which is the following general formula (I) oxazole compound.
상기식에서, R1과 R2는 각각 동일 또는 상이한 것으로, 탄소수 1∼3개의 알킬기 또는 아미노기아다.In the above formula, R 1 and R 2 are the same or different, and each is an alkyl group having 1 to 3 carbon atoms or an amino group.
일반식(I)의 옥사졸화합물중 5-아미노-3-메틸리스옥사졸 혹은 3-아미노-5-메틸리스옥사졸를 사용하는 것이 바람직하며, 함량은 폴리페닐렌에틸렌에테르와 폴리아미드 수지로된 조성물 100중량부에 0.01∼5중량부, 더욱 좋기로는 0.5∼2중량부가 바람직하다. 함량이 0.01중량부 이하이면 첨가효과가 미약하고, 5중량부 이상이면 경제적이지 못하다.Among the oxazole compounds of general formula (I), it is preferable to use 5-amino-3-methylrisoxazole or 3-amino-5-methylrisoxazole, the content of which is composed of polyphenylene ethylene ether and polyamide resin. 0.01-5 parts by weight, more preferably 0.5-2 parts by weight of the composition. If the content is 0.01 parts by weight or less, the effect of addition is weak, and if it is 5 parts by weight or more, it is not economical.
본 발명에서 사용된 충격강화제는 스티렌-부틸렌계엘라스토머로 스티렌-부타디엔블록 공중합체, 수소첨가된 스티렌부타디엔블록 공중합체가 효과적이며, 특히 스티렌-에틸렌부틸렌-스티렌트리블록 공중합체가 가장 적당하다. 한편, 폴리올레핀계 엘라스토머인 에틸렌프로필렌 짝 결합이 아닌 무수말레인산 테트라폴리머 엘라스토머를 함께 사용함으로서 폴리페닐렌에테르와 폴리아미드 수지로된 조성물의 충격강도가 더욱 향상되어진다. 이때 함량은 폴리페닐렌에테르와 폴리아미드 수지로된 조성물 100중량부에 대해 트리블록 공중합체와 테트라폴리머엘라스토머를 각각 1∼40중량부와 1∼20중량부, 더욱 좋기로는 5∼15중량부와 2∼10중량부인 것이 바람직하다. 충경강화제 함량이 폴리페닐렌에테르와 폴리아미드 수지로된 조성물 100중량부에 대해 각각 1중량부 미만일때는 충격강도의 효과가 없으며, 각각 40중량부와 20중량부 이상에서는 실용적인 내열성을 얻을 수 없다. 또한, 치수 안정성을 향상시키기 위해 구조식 CaSiO3인 올레스트 나이트를 첨가할 수도 있으며, 첨가시 함량은 수지조성물 100중량부에 대해 0.1∼5중량부, 더욱 좋기로는 0.5∼2중량부인 것이 바람직하다.As the impact modifier used in the present invention, a styrene-butadiene block copolymer is preferably a styrene-butadiene block copolymer or a hydrogenated styrene-butadiene block copolymer, and particularly, a styrene-ethylene butylene-styrene triblock copolymer is most suitable. On the other hand, the impact strength of the composition of polyphenylene ether and polyamide resin is further improved by using together the maleic anhydride tetrapolymer elastomer instead of the ethylene propylene pair bond which is a polyolefin elastomer. At this time, the content is 1 to 40 parts by weight and 1 to 20 parts by weight, more preferably 5 to 15 parts by weight of the triblock copolymer and the tetrapolymer elastomer, respectively, based on 100 parts by weight of the composition consisting of polyphenylene ether and polyamide resin. And 2 to 10 parts by weight. When the content of the hardening agent is less than 1 part by weight based on 100 parts by weight of the composition of polyphenylene ether and polyamide resin, the impact strength is not effective, and practical heat resistance cannot be obtained at 40 parts by weight and 20 parts by weight or more, respectively. In addition, in order to improve the dimensional stability, it is also possible to add the olestite of the structural formula CaSiO 3 , the content of the addition is preferably 0.1 to 5 parts by weight, more preferably 0.5 to 2 parts by weight relative to 100 parts by weight of the resin composition. .
한편, 폴리페닐렌에테르는 유동성이 나빠 가공성이 불량하기 때문에 트리벤질포스핀을 수지조성물 100중량부에 대해 0.01∼5중량부, 더욱 좋기로는 0.1∼0.5중량부를 첨가하는 것이 적당하다. 0.01중량부 이하로 첨하되면 첨가효과가 발현되지 않으며, 5중량부 이상이면 점도가 저하되는 문제가 있었다. 그리고, 수지조성물의 안정화를 위하여 산화안정제 및 열안정제를 배합할 수 있으며, 안료등도 첨가할 수 있다. 이때 안정제는 금속염 및 인계 안정제를 사용할 수 있다.On the other hand, since polyphenylene ether has poor fluidity and poor workability, it is appropriate to add tribenzyl phosphine to 0.01 to 5 parts by weight, more preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the resin composition. If it is added at 0.01 parts by weight or less, the additive effect is not expressed, and if it is 5 parts by weight or more, there is a problem that the viscosity decreases. In order to stabilize the resin composition, an oxidative stabilizer and a thermal stabilizer may be blended, and a pigment or the like may also be added. At this time, the stabilizer may be used a metal salt and phosphorus stabilizer.
다음의 실시예 및 비교실시예는 본 발명을 좀 더 구체적으로 설명하는 것이지만, 본 발명의 범주를 한정하는 것은 아니다.The following Examples and Comparative Examples illustrate the present invention more specifically, but do not limit the scope of the present invention.
(실시예 1∼3 및 비교실시예 1∼3)(Examples 1-3 and Comparative Examples 1-3)
표 1에 기재된 바와같이 120℃에서 4시간동안 건조한 폴리페닐에테르(바스프사제, 프로로포름에서의 고유점도가 0.48dl/g인것),80℃에서 5시간동안 건조한 폴리아미드 66(프랑스 롱프랑사제, technyl 140AP GRADE), 무수말레인산, 충격강화제 A로서 스티렌-에틸렌-스티렌트리블록 공중합체(미국 쉘사제, KRATON G 1651 GRADE), 충격강화제 B로서 에틸렌프로필렌 짝 결합이 아닌 무수말레인산테트라 폴리머엘라스토머(유니로얄케미컬사제, X-465 GRADE), 트리페닐포스핀, 올레스토나이트 (NYCO 사재,1250GRADE), 안정제 (시바가이기사제 B900 GRADE 및 Cu를 1:1로 혼합한 것)를 투입장치를 이용하여 투입하고 이중나사 압축기(직경 25mm, APV 사제)에서 압출기온돈 275∼285℃, RPM 300의 조건으로 혼련하여 압출된 펠릿(pellet)을 얻고, 이를 50Z 사출성형기(ENGEL 사제)에서 실린더 온도 270∼285℃, 사출압 65BAR,금형온도 90℃의 조건으로 시편을 제작하였다. 제조된 시편의 물성을 측정하여 그 결과를 표2에 기재하였다.Polyphenyl ether dried at 120 ° C. for 4 hours as shown in Table 1 (manufactured by BASF, having an inherent viscosity of 0.48 dl / g in proroform), and polyamide 66 dried at 80 ° C. for 5 hours (Long Franc, France). Styrene-ethylene-styrene triblock copolymer (manufactured by US Shell, KRATON G 1651 GRADE) as a hardener, technyl 140AP GRADE), maleic anhydride, impact modifier A Uni-Royal Chemical Co., X-465 GRADE), triphenylphosphine, olestonite (NYCO Co., Ltd., 1250 GRADE), stabilizer (mixed 1: 1 by Ciba Chemical Co., Ltd. B900 GRADE and Cu) using a feeder And extruded pellets were kneaded in a double screw compressor (diameter 25 mm, manufactured by APV) under conditions of 275 to 285 ° C. and RPM 300 to obtain an extruded pellet, and the cylinder temperature was 270 in a 50Z injection molding machine (manufactured by ENGEL). 285 degreeC Specimens were prepared under conditions of an extrusion pressure of 65 BAR and a mold temperature of 90 ° C. The physical properties of the prepared specimens were measured and the results are shown in Table 2.
(물성측정 방법)(Measurement method)
1. 인장강도:ASTM D-638방법에 따라 측정1. Tensile strength: measured according to ASTM D-638 method
2. 굴곡강도:ASTM D-790방법에 따라 측정2. Flexural strength: measured according to ASTM D-790 method
3. 충격강도:1/8인치 크기의 시편을 ASTM D-790방법에 따라 아이조드 충격강도로 측정, 저온(-30℃)충격강도는 시편을 초저온항온항습기내에서 4시간 방치후에 측정3. Impact strength: Measure 1/8 inch size specimen as Izod impact strength according to ASTM D-790 method. Low temperature (-30 ℃) impact strength is measured after 4 hours of specimen in cryogenic constant temperature and humidity chamber.
4. 내약품성:가솔린에 7시간동안 침적시킨 후에 외관상내로 확인 ⊙:매우좋음, ○:좋은, X:나쁨4. Chemical resistance: After immersion in gasoline for 7 hours, visually confirmed. ⊙: Very good, ○: Good, X: Bad
5. 유동성:300℃,10/초의 전단속도에서 전단점도(shear viscosity)를 측정한 값5. Flowability: Shear viscosity measured at a shear rate of 300 ° C and 10 / sec.
[표 1]TABLE 1
주)1,2,3,4:ALDRICH 사제의 시약급을 사용.Note 1, 2, 3, 4: Reagent grade manufactured by ALDRICH is used.
[표 2]TABLE 2
Claims (3)
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| KR1019920014631A KR960006628B1 (en) | 1992-08-14 | 1992-08-14 | Thermoplastic resin compositions |
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