棉秆重组方材制备工艺与试验  

Preparation Technology and Experiment of Reconsolidated Square Materials of Cotton Stalk

作　　者：宋孝周[1] 雷亚芳[1] 傅峰[2] 

机构地区：[1]西北农林科技大学机械与电子工程学院,陕西杨凌712100 [2]中国林业科学研究院木材工业研究所,北京100091

出　　处：《农业机械学报》2013年第5期164-168,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家林业公益性行业科研专项资助项目(201304511);陕西省农业攻关资助项目(2012K02-16);西北农林科技大学基本科研业务费专项资金资助项目(QN2009044)

摘　　要：以棉秆为原料,通过单因素试验研究密度、施胶量和热压温度对棉秆重组方材力学性能的影响。结果表明,在试验范围内,棉秆重组方材的抗弯弹性模量、抗弯强度和顺纹抗压强度随着密度(0.5、0.6和0.7 g/cm3)和施胶量(添加量为绝干棉秆束质量的8%、10%和12%)的增加而增大,随着热压温度的升高(由160℃升到180℃)先增大后有所减小(由180℃升到200℃)。在其他工艺条件相同的情况下,酚醛胶棉秆重组方材的力学性能明显好于三聚氰胺改性脲醛胶棉秆重组方材。与人工林木材比较,密度为0.7 g/cm3的棉秆重组方材,其力学性能和人工林杨木的成熟材相当。The effects of density, resin content and hot-pressing temperature on mechanical properties of reconsolidated square material of cotton stalk were investigated by single factor test. The result showed that modulus of elasticity, bending strength and compression strength of cotton stalk reconsolidated square material gradually increased with the increase of density （0.5 g/cm3 , 0.6 g/cm3 and 0.7 g/cm3 ） and resin content （8% , 10% and 12% ） during the range of experiment. With the hot-pressing temperature rising, these mechanical properties increased initially（from 160℃ to 180℃ ）and then decreased （from 180℃ to 200℃ ）. At other technology condition being equal, the mechanical properties of cotton stalk reconsolidated square material used phenol-formaldehyde （PF） were obviously superior to those used the melamine modified urea-formaldehyde （MUF）. The mechanical properties of cotton stalk reconsolidated square material with density of 0.7 g/cm3 could be equivalent to mature wood of plantation grown poplar.

关 键 词：棉秆 重组方材 制备工艺 

分 类 号：F323.2[经济管理—产业经济]