Application of Coated Red Phosphorus in the Anti-ablative Modification of UPR Inhibitor

In order to improve the anti-ablation performance of unsaturated polyester(UPR) inhibitor,an effective flame retardant-coated red phosphorus was added into the UPR inhibitor material.The anti-ablation characteristics of systems coated red phosphorus/nano-Mg(OH)2/UPR、red phosphorus/micro-Mg(OH)2/UPR、red phosphorus/Al(OH)3/UPR、red phosphorus/ MA/UPR and red phosphorus/ZB/UPR was investigated by an oxy-acetylene ablation apparatus.The results show that the red phosphorus/nano-Mg(OH)2/UPR composite has the best anti-ablation performance.The linear ablation rate of red phosphorus/nano-Mg(OH)2/UPR system with mass ratio of 30∶20∶100 is 0.285 mm/s and decreases by 56% in comparison with UPR.The fire-retardant and anti-ablation mechanism of red phosphorus/Mg(OH)2/UPR system was analyzed by SEM and TGA.