薄壁阻燃聚碳酸酯的研究

摘要

采用全氟丁基磺酸钾阻燃剂(PPFBS)与高岭土复配,成功制备了具有0.8 mm Ⅴ-0阻燃等级的聚碳酸酯(PC),研究了PPFBS和高岭土对PC热稳定性、燃烧特性和力学性能的影响.结果表明,PPFBS对PC的阻燃效果主要取决于促进PC交联成炭和引发PC降解之间的平衡,而高岭土提高了PC燃烧炭层的稳定性,使其热释放速率更加平缓.除此之外,高岭土对PPFBS阻燃PC的力学性能也有一定的改善作用.%Flameretarded polycarbonate which could reach Ⅴ-0 class at 0.8 mm was successfully prepared using potassium perfluorobutane sulfonate (PPFBS) and kaolin,and effect of components on thermal stability,flaming characteristics and mechanical properties of PC were studied.The results showed thatfire retarding property was mainly depended on the competition between char-forming and degradation,whileexistence of kaolin increased the stability ofchar layer,resulting in a gentle heat release.In addition,kaolin improved the mechanical properties of flame retarded polycarbonate.