Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Thermal Properties of the Themoplastic Elastomers Based on EPDM Ionomer/Polyamide-6 Blends

EPDM 이오노머/Polyamide-6 블렌드계 열가소성 탄성체의 열적 성질

  • Jin, Sung-Hoon (Division of Chemical Engineering, Chonbuk National University) ;
  • Song, Gwang Seok (Division of Chemical Engineering, Chonbuk National University) ;
  • Lee, Dai-Soo (Division of Chemical Engineering, Chonbuk National University)
  • 진성훈 (전북대학교 공과대학 화학공학부) ;
  • 송광석 (전북대학교 공과대학 화학공학부) ;
  • 이대수 (전북대학교 공과대학 화학공학부)
  • Received : 2011.05.11
  • Accepted : 2011.08.01
  • Published : 2012.02.01
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Abstract

A new type of thermoplastic elastomer (TPE) based on EPDM ionomer as an elastomer and polyamide-6 as a reinforcing crystalline polymer was prepared and the thermal properties of TPEs were investigated. Especially effects of neutralization of maleated EPDM (MA-EPDM) to prepare EPDM ionomer with zinc oxide and the content of polyamide-6 on the thermal properties of the blends were investigated. Both the neutralization and blending were carried out employing a twin screw extruder. It was found that the neutralization of MA-EPDM results in the increase of cooling crystallization temperatures. Polyamide-6 plays the role of reinforcing filler in the blends due to the high crystallinity. Fine dispesion of polyamide-6 in the blends was confirmed and attributed to the imide formation between the maleic anhydride of MA-EPDM and amine group of polyamide-6. TPEs based on EPDM ionomer/Polyamide-6 blends showed balanced mechanical properties with improvement in heat resistance.

탄성체로써 EPDM 이오노머와 결정성 보강 고분자로써 폴리아미드-6를 이용하는 새로운 형태의 열가소성 탄성체를 제조하여 이들의 열적 성질을 고찰하였다. 특히 산화아연을 이용하여 말레인화 EPDM으로부터 EPDM 이오노머를 제조할 때 중화도의 영향과 블렌드 중 폴리아미드-6 함량의 영향을 살펴보았다. 중화와 블렌드 공정은 이축압출기를 이용하였다. 말레인화 EPDM의 중화는 냉각 결정화 온도를 상승시켰다. 폴리아미드-6의 높은 결정성은 보강재 효과를 보였다. 블렌드에서 말레인화 EPDM과 폴리아미드-6 사이의 이미드 형성으로 폴리아미드-6의 분산이 양호하게 나타났다. EPDM 이오노머와 폴리아미드-6로 제조한 열가소성 탄성체는 균형적인 기계적 물성과 향상된 내열성을 나타내었다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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