화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.21, No.5, 581-585, October, 2010
Export Citation
Polyorganosiloxane 변성 말레화 EPDM/EPDM 방진고무의 제조와 그 특성
Preparation and Properties of Polyorganosiloxane Modified Maleated EPDM/EPDM Rubber Vibration Isolator
강두환†, 김소미
  • 단국대학교 공과대학 고분자시스템공학과
Doo Whan Kang†, and So Mi Kim
  • Department of Polymer Science & Engineering, College of Engineering Dankook University, Yongin 448-701, Korea
E-mail:
초록
산업폐기물 중의 하나인 무기 금속화합물, Alnico를 1,3,5-trimethylcyclotrisilazane으로 표면 처리하여 충전제로 하고 EPDM에 maleic anhydride (MA)를 용융 중합법으로 그라프트시켜 제조한 말레화 EPDM과 α,ω-bis(3-aminopropyl)polydimethylsiloxane을 공중합시켜 제조한 말레화 EPDM-polydimethylsiloxane공중합체(MEPDM-PDMS)와 EPDM 및 표면처리된 Alnico를 compounding하여 composite rubber를 제조하였다. EPDM/Alnico/MEPDM-PDMS 방진고무는 MEPDMPDMS와 EPDM을 중량비로 1 : 10으로 하고 또한 충전제의 함량을 EPDM에 대하여 25, 50 phrs로 그리고 개시제로 dicumyl peroxide (DCP)를 첨가하여 compounding시킨 다음 유압 고온 프레스로 가교시켜 제조하였다. 제조한 composite rubber의 열적특성을 측정한 결과 MEPDM-PDMS를 첨가하여 제조한 시료의 Tg가 EPDM만으로 제조한 고무보다 약간 낮은 -33 ℃ 부근으로 나타났고 DMA의 측정결과 손실계수 tan δ는 MEPDM-PDMS을 혼합한 경우가 더 크게 나타나는 것으로 보아 방진 특성이 우수함을 확인하였다.
The surface of Alnico, one of the industrial dust waste, was treated with 1,3,5-trivinyl-1,3,5-trimethylcyclotrisilazane (VMS) as a surface treating agent and used as the filler for vibration isolator rubber. Maleated EPDM prepared from bulk polymerization of EPDM with maleic anhydride was copolymerized with α,ω-bis(3-aminopropyl)polydimethylsiloxane to obtain maleated EPDM-polydimethylsiloxane copolymer (MEPDM-PDMS). EPDM/Alnico/MEPDM-PDMS vibration isolator rubber was prepared from compounding with Alnico treated with surface treating agent, 25 and 50 phrs to EPDM, respectvely based on 1 to 10 wt% of MEPDM-PDMS to EPDM. From the measurement of the thermal properties to the rubber, the glass transition temperatures (Tg) for the rubber containing maleated EPDM-PDMS copolymer was slightly lower temperature, 33 ℃ than EPDM rubber, and also DMA results showed higher tan δ peak to the rubber prepared from compounding with EPDM-PDMS copolymer. From the results, rubber prepared using EPDM-PDMS copolymer had better vibration isolator property.
Keywords:Alnico;1,3,5-trimethylcyclotrisilazane;vibration isolator rubber,α,ω-bis(3-aminopropyl)polydimethylsiloxane
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