Material Science and Engineering School, Central South University of Forestry and Technology, Changsha 410004, China.
Bioresour Technol. 2010 Jun;101(12):4662-6. doi: 10.1016/j.biortech.2010.01.053. Epub 2010 Feb 11.
The objective is to evaluate the primary mechanical and physical properties of particleboard made from hammer-milled rice straw particles of six different categories and two types of resins. The results show the performance of straw particleboards is highly dependent upon the straw particle size controlled by the opening size of the perforated plate inside the hammer-mill. The static bending and internal bonding strength of polymeric diphenylmethane diisocyanate (pMDI) resin-bonded boards initially increase then decrease with decreased particle size. The thickness swelling, water absorption, and linear expansion of particleboards decrease with increasing particle size. Compared with pMDI resin-bonded panels, the rice straw particleboard bonded using urea-formaldehyde resin exhibits much poorer performance. The optimized panel properties, obtained when using 4% pMDI and straw particles hammer milled with a 3.18 mm opening perforated plate, exceeded the M-2 specification of American National Standard for Wood Particleboard.
目的是评估由六种不同类型的锤式粉碎机稻草颗粒和两种类型的树脂制成的刨花板的主要机械和物理性能。结果表明，稻草刨花板的性能高度依赖于锤磨机内穿孔板的开口尺寸控制的稻草颗粒大小。聚合物二苯甲烷二异氰酸酯（pMDI）树脂胶接板的静态弯曲和内结合强度最初随粒径的减小而增加，然后减小。刨花板的厚度膨胀、吸水率和线性膨胀随粒径的增大而减小。与 pMDI 树脂胶接板相比，使用脲醛树脂胶接的稻秸刨花板性能差得多。当使用 4%的 pMDI 和用 3.18 毫米开口穿孔板锤磨的稻草颗粒时，优化的板性能超过了美国国家标准中木质刨花板 M-2 规范。
