Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of 3-Amino-1,2,4-triazole on Microstructure and Properties of Maleated HDPE/Maleated EPDM Blend

3-Amino-1,2,4-triazole이 Maleated HDPE/Maleated EPDM 블렌드의 미세구조 및 물성에 미치는 영향

  • Kim, Tae Hyun (Department of Fusion Chemical Engineering, Hanyang University) ;
  • Chang, Young-Wook (Department of Fusion Chemical Engineering, Hanyang University) ;
  • Lee, Yong Woo (Department of Chemistry and Applied Chemistry, Hanyang University) ;
  • Kim, Dong Hyun (Convergent Technology, R&D Division, Korea Institute of Industrial Technology)
  • 김태현 (한양대학교 융합화학공학과) ;
  • 장영욱 (한양대학교 융합화학공학과) ;
  • 이용우 (한양대학교 응용화학과) ;
  • 김동현 (한국생산기술연구원 융복합연구부문)
  • Received : 2014.01.16
  • Accepted : 2014.03.05
  • Published : 2014.03.31
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Abstract

3-Amino-1,2,4-triazole (ATA) (2.5 and 5.0 phr) was incorporated into a immiscible maleated ethylene propylene diene rubber(mEPDM)/maleated high density polyethylene(mHDPE) (50 wt%/50 wt%) blend by melt mixing. Effects of the ATA on structure, mechanical and rheological properties of the blend was investigated. FT-IR and DMA results revealed that supramolecular hydrogen bonding interactions between the polymer chains occur by reaction of ATA with maleic anhydride grafted onto the component polymers in the blend, which induces the physical crosslinks in the blend. FE-SEM analysis showed that mEPDM forms a dispersed phase in continuous mHDPE matrix, and the blend with the ATA has finer phase morphology as compared to the blend without the ATA. By the addition of ATA in the blend, there were significant increases in tensile strength, modulus and elongation-at-break as well as elastic recoverability. Melt rheology studies revealed that ATA induced substantial increase in storage modulus and complex viscosity of the blend at the melt state.

3-Amino-1,2,4-triazole(ATA)을 비상용성 블렌드인 maleated HDPE(mHDPE)/maleated EPDM (mEPDM)(50 wt%/50 wt%)에 용융혼합에 의해 2.5 phr, 5.0 phr 첨가하였으며, ATA 첨가에 따른 블렌드의 미세구조, 기계적물성 및 유변물성을 FT-IR, FE-SEM, 인장시험, DMA 및 ARES를 이용하여 각각 조사하였다. FTIR 및 DMA 분석결과 용융혼합 과정에서 ATA가 mHDPE 및 mEPDM의 말레무수물과 반응하여 초분자적 수소결합이 형성되며, 이로부터 물리적 가교구조가 형성되는 것을 알 수 있었다. FE-SEM 분석결과 mHDPE/mEPDM 블렌드는 플라스틱인 HDPE가 연속상을 이루고 고무상인 EPDM이 분산상을 이루며 ATA를 첨가함으로써 모폴로지가 더욱 미세해짐을 알 수 있었다. 인장물성시험결과 ATA에 첨가에 의해 형성된 물리적가교구조로 인해 인장강도, 모듈러스, 파단신율 값 및 탄성복원력이 증가되었으며, 용융레올로지 특성 분석결과 ATA가 첨가됨으로써 블렌드의 저장탄성율과 용융점도가 증가됨을 알 수 있었다.

Keywords

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