摘要
针对现有挤压空心刨花板纵向强度低、刨花规格要求高等缺陷,以不同规格的刨花、板材实体密度和空心孔距作为影响因素,采用平压成型的方式试制30 mm厚的空心刨花板,并对板材主要物理力学性能进行测试和分析。研究表明:采用平压成型方式制造空心刨花板是可行的,能有效地提高空心刨花板的纵向强度。本试验范围内:1细杆状刨花压制的板材力学性能最好;2实体密度越大板材的静曲强度越大,实体密度0.70 g·cm-3板材静曲强度为实体密度0.50 g·cm-3板材静曲强度的近3倍;3空心孔距越大板材的静曲强度越大。实体密度0.70 g·cm-3,空心孔距20 mm,细杆状刨花,压制的空心刨花板纵向静曲强度达到8.24 MPa。
Due to the existing defects with extrusion hollow particleboard, such as low longitudinal strength, de- mand for wood shavings. In order to improve these defects, we study used different specifications for shavings, entity density, and hollow hole distance input factor, along with flat-pressure, to make 30 mm hollow particle- board. Tests were performed on hollow particleboard and analysis of their main physical and mechanical perfor- mance was conducted. Results showed that in contrast to extruded hollow particleboard, the mechanical perfor- mance was greatly improved with fiat-pressure hollow particleboard. In the test range： 1 ） the mechanical per- formance of the board made by rod-shaped wood shavings was best. 2） The higher the entity density, the higher number of the longitudinal MOR; the MOR of hollow particleboard with an entity density of 0.70 g ＂era-3 was nearly 3 times that of the entity density of 0.50 g＇cm-3. 3） The greater the hollow hole distance, the higher number of the longitudinal MOR. When the wood shavings were rod-shaped, the entity density was 0.70 g＂ cm-3, and the hollow hole distance was 20 ram, then the MOR of the hollow particleboard was 8.24 MPa. [ Ch, 5 fig. 3 tab. 9 ref. ]
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2015年第5期770-775,共6页
Journal of Zhejiang A&F University
