磷酸硼对樟子松的阻燃影响

采用磷酸硼对木材进行改性处理,测定了处理后试材的阻燃性、抗流失性、吸湿性、力学性能.研究结果表明,磷酸硼处理后试材,吸药量达到20.47 kg/m3以上时,垂直燃烧实验可达到到F-0级水平;通过灼烧实验,磷酸硼处理的木粉在500℃灼烧时残留率可达到97.997％;此改性剂具有较好阻燃性能和一定的抗流失性,常压下磷酸硼处理的樟子松试件LRV为50.28％;木材顺纹抗压强度平均下降了 8.67％,无明显变化;木材抗弯曲压强度平均下降了 27.95％.但磷酸硼阻燃剂在高湿条件下有一定的吸湿性,使用性能有待改进,并应注意采取防护措施.

Effect of boron phosphate fire-retardant treatment on mongolica

In this paper,using boron phosphate modified treatment of wood,we measured the treatment of test materials,fireproofing capability,leach resistant,hygroscopicity and mechanical performance.The results showed that,when the in take of BPO4 fire retardant is over 20.47 kg/m3,the omposites reach F-0 rating in the vertical burning test.Through the burning experiment and boron phosphate powder of wood processing in 500 ℃ when burning retention rate can reach 97.997%.This fire-retardant has fine flame resistivity and certain leach resistance to wood,at atmospheric pressure boron phosphate treatment mongolica LRV was 50.28%.Wood arrange grain compressive strength fell by 8.67% on average,and there was obvious change on it.Wood bending strength fell by 27.95% on average.But boron phosphate flame-retardant in high humidity conditions performance needs to be improved and the protective measures should be paid attention to.