A novel intumescent (carbonization, acid donor and foaming) fire retardant that mimics carbon nanotubes was introduced into bitumen roofing and characterized using cone calorimetry as the main analytical tool. The experimental results indicate that 18% (by mass) attapulgite mineral (ATTP) mixed with base bitumen decreased the peak heat release rate per unit area (pHRRPUA) by 10%. Further, incorporation of melamine coated ammonium polyphosphate (MAPP) decreased the pHRRPUA by 52% and a mixture of these (3:1, ATTP:MAPP) decreased the pHRRPUA by 25% as compared to adding CaCO₃ as a filler. The residual mass loss after the cone test was also improved with up to 3%. The indication of a positive synergistic flame retardant effect of the ATTP‐MAPP mixture is supported by thermogravimetric analysis. The addition of this rod‐like mineral improved the general fire retardant properties of the base bitumen and increased the viscosity. Therefore, the polymer‐modified bitumen with both fire retardant and rheological properties (providing mechanical strength) is a promising novel approach in the design of bitumen roofing membranes.

中文翻译：

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三聚氰胺涂层的聚磷酸铵与棒状矿物填料凹凸棒土的协同阻燃性能，用于聚合物改性沥青屋面膜

模仿碳纳米管的新型膨胀型（碳化，酸给体和泡沫）阻燃剂被引入沥青屋面，并使用锥形量热法作为主要分析工具进行表征。实验结果表明，按质量计18％的凹凸棒石矿物（ATTP）与基础沥青混合可将单位面积的峰值放热率（pHRRPUA）降低10％。此外，与添加CaCO ₃相比，三聚氰胺涂层的聚磷酸铵（MAPP）的加入使pHRRPUA降低了52％，并且这些混合物（3：1，ATTP：MAPP）的pHRRPUA降低了25％。作为填充物。锥形试验后的残余质量损失也提高了3％。热重分析证明了ATTP-MAPP混合物具有积极的协同阻燃作用。棒状矿物的添加改善了基础沥青的一般阻燃性能并增加了粘度。因此，具有阻燃性和流变性能（提供机械强度）的聚合物改性沥青是设计沥青屋面膜的一种有前途的新方法。