【摘要】 采用熔融共混方法制备了聚碳酸酯/短切碳纤维/二苯砜磺酸钾（PC/sCF/KSS）复合材料，通过垂直燃烧（UL-94）、极限氧指数（LOI）和锥型量热测试研究了同时加入sCF和KSS对PC阻燃性能的影响。结果表明，当加入质量分数2%的sCF和质量分数0.1%的KSS时，PC/2sCF/0.1KSS复合材料的LOI较纯PC(27.2%)大幅提高，达到36.2%,UL-94等级达到V-0级。sCF和KSS在降低PC热释放和烟释放方面表现出协同效应。与纯PC相比，PC/2sCF/0.1KSS复合材料的峰值热释放速率（pHRR）降低59%，峰值烟释放速率（pSPR）降低57%，峰值CO释放速率（pCOP）降低63%，均优于单独加入sCF或KSS的样品。在燃烧过程中，sCF和KSS的同时加入在PC复合材料中发挥了优异的凝聚相阻燃作用。此外，PC/2sCF/0.1KSS复合材料的冲击强度、拉伸强度、断裂伸长率与纯PC相比变化不大，力学性能得到保持。更多还原

【Abstract】 Polycarbonate/short carbon fiber/potassium 3-(phenylsulfonyl)benzenesulfonate(PC/sCF/KSS) composites are prepared by melt blending. The effects of sCF and KSS on the flame retardancy of PC are studied by vertical combustion(UL-94), limiting oxygen index(LOI) and cone calorimetry. The results show that when 2%(mass percent) sCF and 0. 1%(mass percent) KSS are added, the LOI of PC/2sCF/0. 1KSS composites is significantly higher than that of pure PC(27. 2%), reaching 36. 2%. The grade of UL-94 is V-0.SCF and KSS show synergistic effect in reducing heat release and smoke release of PC. Compared with pure PC, the peak heat release rate(pHRR) of PC/2sCF/0. 1KSS composites decreases by 59%, the peak smoke release rate(pSPR) decreases by 57%, and the peak CO release rate(pCOP) decreases by 63%, all of which are better than adding sCF or KSS alone. The flame retardant mechanism of the composites is studied, and it is found that the addition of sCF and KSS plays an excellent flame retardant effect of condensed phase in PC composites. In addition, the impact strength, tensile strength and elongation at break of PC/2sCF/0. 1KSS composites change little compared with pure PC, and the mechanical properties are maintained.更多还原