由回收木材废料制成的阻燃处理低甲醛释放刨花板。
Fire-retardant-treated low-formaldehyde-emission particleboard made from recycled wood-waste.
作者信息
Wang Song-Yung, Yang Te-Hsin, Lin Li-Ting, Lin Cheng-Jung, Tsai Ming-Jer
机构信息
School of Forestry and Resource Conservation, College of Bio-Resource and Agriculture, National Taiwan University, Taipei, Taiwan, ROC.
出版信息
Bioresour Technol. 2008 Apr;99(6):2072-7. doi: 10.1016/j.biortech.2007.03.047. Epub 2007 May 15.
The objective of this study was to manufacture fire-retardant-treated low-formaldehyde-emission particleboard from recycled wood-waste particles using polymeric 4,4'-methylenediphenyl isocyanate (PMDI) and phenol-formaldehyde (PF) resins. The influence of the PMDI/PF ratio (ratio of particles sprayed with PMDI to particles sprayed with PF, w/w) after fire retardant treatment on formaldehyde emissions, mechanical properties, and surface fire resistant performance of the manufactured particleboard was investigated. The experimental results showed that the formaldehyde emissions linearly decreased with an increasing PMDI/PF ratio. Moreover, the bending strength, internal bond strength, and screw holding strength increased with an increasing PMDI/PF ratio. The thickness swelling of the particleboard was improved by using an increasing PMDI/PF ratio. Furthermore, the fire-retardant-treated low-formaldehyde-emission particleboards fabricated in our study could pass the third grade standard of surface fire resistant performance as specified by CNS 6532.
本研究的目的是使用聚合二苯基甲烷二异氰酸酯（PMDI）和酚醛（PF）树脂，由回收的木材废料颗粒制造经阻燃处理的低甲醛释放刨花板。研究了阻燃处理后PMDI/PF比例（喷洒PMDI的颗粒与喷洒PF的颗粒的比例，w/w）对所制造刨花板的甲醛释放量、力学性能和表面耐火性能的影响。实验结果表明，随着PMDI/PF比例的增加，甲醛释放量呈线性下降。此外，随着PMDI/PF比例的增加，抗弯强度、内结合强度和握螺钉力均有所提高。使用增加的PMDI/PF比例可改善刨花板的厚度膨胀。此外，我们研究中制造的经阻燃处理的低甲醛释放刨花板能够通过CNS 6532规定的表面耐火性能三级标准。
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