Thermally stable polymers based on acetylene-terminated adamantanes

摘要: 1,3-Diethynyl-5,7-dimethyladamantane, 1,3-diethynyl-5-phenyladamantane, 1,3,5-triethynyladamantane, and 3,3′-diethynyl-1,1′-biadamantane, were synthesized polymerized thermally at 210°C. The thermoset resins obtained post-cured 300°C for 16 h to give materials that exhibited onsets of degradation (TGA) in air 460–477°C helium 460–485°C. fully cured did not exhibit any detectable DSC transitions between 25 400°C. An attempt polymerize 1-ethynyl-3-phenyladamantane was unsuccessful. © 1992 John Wiley & Sons, Inc.