Covulcanization and Ozone resistance for Unsaturated and Saturated Rubbers

불포화 고무와 포화 고무의 공가류 및 내오존성

  • 임원우 (금호산업주식회사 타이어사업부 R & D center) ;
  • 정일택 (금호산업주식회사 타이어사업부 R & D center) ;
  • 한민현 (금호산업주식회사 타이어사업부 R & D center)
  • Received : 2001.08.25
  • Accepted : 2001.11.14
  • Published : 2001.12.21

Abstract

Effects of the ratio of rubber composition on covulcanization and ozone resistance were studied in this study. Specimens used in this study were rubber compounds(specimen-A) blended with various ratio of NR, SBR, BR, IIR, and EPDM, unsaturated rubber compounds(specimen-B) with NR/BR/SBR, and saturated rubber compounds(specimen-C) with NR/IIR/EPDM. PAD adhesion specimen was prepared from vulcanizing specimen-A and B, and specimen-A and C, respectively. Using same adhesion specimen, peel strength was measured and tested ozone resistance. In specimen-A, peel strength was higher with increasing NR ratio for NR and BR contained blends. In other specimen-A containing NR and SBR, the peel strength was also increased with increasing SBR ratio. NR/BR/IIR/EPDM rubber compounds had also better adhesion property than NR/SBR/IIR/EPDM compounds. As more unsaturated rubber was blended, the peel strength was higher but ozone resistance was worse. Optimum ratio of unsaturated and saturated rubbers for the peel strength and ozone resistance was 60/40.