Outdoor mold-resistance and flame retardance of Pinus massoniana treated with nano-ZnO
-
摘要: 以马尾松Pinus massoniana为试材,分别采用质量分数为2.0,10.0,20.0,40.0 gkg-1的纳米氧化锌进行处理,比较了纳米氧化锌处理前后马尾松材防霉性能和阻燃性能的差异。结果表明:相同处理时间下,马尾松试件载药量和防霉效果均随纳米氧化锌浸渍质量分数的增加而提高。纳米氧化锌处理马尾松材的霉变时间比未处理材霉变时间推迟3~4周,防霉效果良好。2.0 gkg-1纳米氧化锌处理的马尾松材的点燃时间比未处理材延迟7 s,20.0 gkg-1纳米氧化锌处理的马尾松材的总发烟量比未处理材低。纳米氧化锌对马尾松材的热释放速率、总热释放量、质量损失速率和平均有效燃烧热影响不明显。图4表3参12Abstract: The effect of nano-ZnO,at concentrations of 2.0,10.0,20.0,and 40.0 gkg-1,on mold resistance and flame retardance of Pinus massoniana was studied. Results showed that both drug loading and mold resistance improved as the concentration of nano-ZnO increased with the time to mold initiation for the treated P. massoniana being 3-4 weeks longer than the untreated. The time to ignition (TTI) of P. massoniana treated by nano-ZnO at 2.0 gkg-1 was 7 s later than the untreated sample,and the total smoke release (TSR) with 20.0 gkg-1 was lower than the untreated. The treated P. massoniana differed slightly from the untreated in heat release rate (HRR),total heat release (THR),mass loss rate (MLR),and effective heat of combustion (EHC).[Ch,4 fig. 3 tab. 12 ref.]
-
Key words:
- forest engineering /
- Pinus massoniana /
- nano-ZnO /
- mold resistance /
- flame retardance
-
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.02.008

计量
- 文章访问数: 3395
- HTML全文浏览量: 257
- PDF下载量: 1139
- 被引次数: 0