Improvement on fire retardancy of wood flour/polypropylene composites using various fire retardants
Improvement on fire retardancy of wood flour/polypropylene composites using various fire retardants
复制标题
DOI：
10.1016/j.polymdegradstab.2013.12.022
复制
发表时间：
2014-02-01
影响因子：
5.9
通讯作者：
Tanaka, Tatsuya
中科院分区：
文献类型：
--
作者：
Arao, Yoshihiko;Nakamura, Sakae;Tanaka, Tatsuya
木粉的添加提高了热塑性塑料的机械性能，同时也极大地提高了纯塑料的燃烧速率。为了改变木塑复合材料（WPC）的可燃性，添加了聚磷酸铵（APP）、三聚氰胺聚磷酸盐（MPP）、氢氧化铝等多种添加剂型阻燃剂，以提高木塑复合材料的防火性能。采用UL94火焰测试和锥形量热法评估WPC的防火性能，结果证明添加10 wt% APP可增强自熄性能。另一方面，含有 30 wt% APP 的聚丙烯没有实现自熄性能。通过比较燃烧试验的结果，讨论了锥形量热试验中赋予自熄性能的有效参数。据推测，木塑复合材料自熄性最重要的参数是燃烧初期的平均放热率。还研究了阻燃剂对木塑复合材料机械性能的影响。复合材料的拉伸强度和模量随着阻燃剂的添加而降低。 (C) 2013 Elsevier Ltd. 保留所有权利。
The addition of wood flour improves the mechanical properties of thermoplastics, but also increases the burning rate of neat plastics profoundly. To modify the flammability of wood-plastic composites (WPCs), various additive-type fire retardants such as ammonium polyphosphate (APP), melamine polyphosphate (MPP), and aluminum hydroxide were added to improve the fire performance of WPCs. Both UL94 flame tests and cone calorimetry were used to evaluate the fire performance of WPCs, and the results proved that the addition of 10 wt% APP lead to enhanced self-extinguishing properties. On the other hand, polypropylene with 30 wt% of APP did not achieve self-extinguish properties. The effective parameters in the cone calorimetry test to give self-extinguishing properties were discussed by comparing the results of the burning tests. It was presumed that the most important parameters for self-extinguishing of WPCs was an average heat release rate at initial stage of burning. The effect of fire retardants on the mechanical properties of WPCs was also investigated. The tensile strength and modulus of the composites decreased with the addition of fire retardants. (C) 2013 Elsevier Ltd. All rights reserved.