纳米改性氢氧化铝与包覆红磷协效阻燃PBT的研究

Synergetic Fire Retardant Effect of Nano CGATH and Red Phosphorus for PBT

以纳米改性氢氧化铝(CG-ATH)与包覆红磷(RP)为无卤阻燃剂,研究其对聚对苯二甲酸丁二醇酯(PBT)的阻燃性能和力学性能的影响。首先探讨了包覆红磷的添加量对PBT阻燃性能和力学性能的影响,然后固定包覆红磷用量,考察纳米CG-ATH的添加量对PBT/RP复合体系的阻燃性能和力学性能的影响。实验结果表明,纳米CG-ATH和包覆红磷能协效阻燃PBT复合体系,在包覆红磷添加量为10phr,纳米CG-ATH为20 phr时,PBT复合材料的氧指数从21%提高到30%,达到V-0级;复合材料的拉伸强度为57.0 M Pa,冲击强度为3.03 kJ/m2,断裂伸长率为5.79%,表明该PBT复合体系具有优良的阻燃性能和力学性能。

The article discussed the fire retardant effect and mechanical properties of PBT system containing red phosphorus only and synergetic effect of nano CG-ATH and red phosphorus respectively. Nano CG-ATH and encapsulated red phosphorus were added into PBT with different loading levels, the results show that CG-ATH has synergetic effect with red phosphorus for fire retardant PBT composite, and it is possible to get PBT products with better fire retardancy and mechanical properties while using 10 phr encapsulated red phosphorus and 20 phr nano CGATH with LOI 30%,teneile strength 57.0 MPa, elongation at break 5.8% and impact strength 3.0 kJ/m^2.