摘要
将三(1-氧代-1-磷杂-2,6,7-三氧杂双环[2,2,2]辛烷-4-亚甲基)磷酸酯(trimer)用于阻燃聚碳酸酯(PC),研究了它对 PC 阻燃性能、机械性能、热分解行为及灼烧残炭的影响。将 trimer 用于 PC 时,其质量分数为8%的用量即可使 PC 的阻燃级别达到 UL 94 V-O(试样厚度为3.2 mm)级,极限氧指数达33%。值得注意的是,加入 trimer 可改善 PC 的拉伸强度,特别是弯曲强度及弯曲模量。热分析数据表明,trimer 可提前并加速 PC 的交联成炭,但不能提高PC 的成炭率。此外,扫描电子最微镜照片显示,trimer 可使炭层轻微发泡膨胀,也可改善炭层质量。
The authors utilized tris（1-oxo-2,6,7-trioxa-1-phosphobicyclo[2.2.2]octane methylene-4） phosphate（trimer） to prepare flame retardant polycarbonate （PC）, and studied its effects on flame retardancy, mechanical properties, thermal decomposition behavior and post-burn residue of the PC resin. Adding 8% in mass fraetion of the trimer could make the flame retardance level of the PC resin specimen with thickness of 3.2 mm reach UL 94 V-0 rating and its limited oxygen index attain 33%. It is noticeable that the introduction of the trimer can improve the PC resin＇s tensile strength, particularly the flexural strength and flexural modulus. The thermal analysis reveals that the trimer can facilitate and accelerate crosslinking and char forming of the PC resin, but can not raise its char yield. In addition, scanning electron microscopic observations indicate that the trimer can promote foaming and expansion of the char layer to a slight extent, and can improve quality of the char layer as well.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2008年第6期25-28,共4页
China Synthetic Resin and Plastics
基金
国家863计划资助项目(2007AA032500)
