A novel polyhydroxy triazine-based charring agent, N-tris(hydroxymethyl)-amino triazine-piperazine copolymer (TTPC), was synthesized from piperazine, cyanuric chloride and tris(hydroxymethyl) aminomethane. The chemical structure of TTPC was characterized by Fourier transform infrared spectroscopy and ¹³C solid-state nuclear magnetic resonance. TTPC, ammonium polyphosphate (APP) and zinc borate (ZB) were then introduced into polypropylene (PP) by melt compounding to improve the fire performance of the composites. The test results showed that the presence of 21% APP-TTPC-ZB with mass ratio of 16:4:1 could significantly reduce the peak heat release rate from 1547 to 230 kW/m², increase the limiting oxygen index value from 18.0 to 29.6% and upgrade the UL-94 rating from no rating to V-0, accompanied by the elimination of melt dripping. The thermal stability and charring behaviors of the composite samples were investigated by thermogravimetric analysis. The results showed that TTPC was a highly efficient charring agent, and ZB could act as synergist in the intumescent system. Based on the comprehensive study of fire performance, char morphology and mechanical properties, it can be concluded that TTPC is a superior charring agent, especially compared with the generally used pentaerythritol.

由哌嗪，氰尿酰氯和三（羟甲基）氨基甲烷合成了一种新型的基于多羟基三嗪的炭化剂N-三（羟甲基）-氨基三嗪-哌嗪共聚物（TTPC）。TTPC的化学结构通过傅里叶变换红外光谱和¹³ C固态核磁共振表征。然后通过熔融混合将TTPC，聚磷酸铵（APP）和硼酸锌（ZB）引入聚丙烯（PP）中，以改善复合材料的防火性能。测试结果表明，质量比为16：4：1的21％APP-TTPC-ZB的存在可将峰值放热率从1547显着降低至230 kW / m ²，将极限氧指数值从18.0提高到29.6％，并将UL-94等级从无等级提高到V-0，同时消除了熔滴。通过热重分析研究了复合材料样品的热稳定性和炭化行为。结果表明，TTPC是一种高效的炭化剂，ZB在膨胀体系中可以起增效剂的作用。通过对防火性能，炭形态和力学性能的综合研究，可以得出结论，TTPC是一种优异的炭化剂，尤其是与常用的季戊四醇相比。