south korea rubber addtitve dpg diphenyl guanidine import
south korea rubber addtitve dpg diphenyl guanidine import
south korea rubber addtitve dpg diphenyl guanidine import
south korea rubber addtitve dpg diphenyl guanidine import
south korea rubber addtitve dpg diphenyl guanidine import
  • What is the role of 1,3-diphenyl guanidine in silica-reinforced rubber compounds?
  • The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds. Two roles of DPG are well known to be: adsorption onto silica surface to reduce the acidic sites and second to boost the silanization reaction as secondary accelerator. However, these two roles are in a way conflicting.
  • What are bound rubber contents based on DPG concentration?
  • Bound rubber contents as function of DPG concentration in the MB; (): total bound rubber; (): chemically bound rubber; (): physically bound rubber. 3.1.3. Silica filler flocculation rate
  • What is DPG filler-Filer interaction (Payne effect)?
  • Roles of DPG Filler-filer interaction (Payne effect) Decrease 1) adsorption onto silica surface2) enhancing the silanization reaction and formation of higher amount of bound rubber Chemically bound rubber, filler-polymer coupling rate Increase
  • Does DPG promote silanization?
  • This result indicates that the presence of DPG in the MB – independent from the concentration – promotes not only the silanization, but also the filler-polymer coupling reaction via the silane coupling agent (TESPT). This role of DPG will be discussed lateron in section 3.2.