摘要
利用正交试验法,探讨了密度、施胶量及热压压力对板材物理性能的影响,提出较佳的工艺参数。研究表明:在试验范围内,密度增大,力学强度和吸水厚度膨胀率随之增大;施胶量增大,力学强度和甲醛的释放量增加,吸水厚度膨胀率减小;热压压力增加,内结合强度降低,静曲强度、弹性模量以及吸水厚度膨胀率几乎不变,热压压力由1.5 MPa增加到2.25 MPa时,内结合强度约降低了3%,热压压力由2.25 MPa增加到3 MPa时,内结合强度约降低了6%。
The influence of density,adhesive content,and hot-press pressure on physical and mechanical properties of panel was studied by using the orthogonal experiment.The better technological parameters were put forward.The research shows that：within the scope of the test,with the increase of density,the mechanical properties and the thickness swelling rate of water absorption increase;With the increase of resin content,the mechanical properties and the formaldehyde emission increase,the thickness swelling rate of water absorption decrease;With the increase of hotpress pressure,the internal bond strength decreases,the static bending strength,elastic modulus and the thickness swelling rate of water absorption have no significant change,when hot-press pressure increase from 1.5 MPa to 2.25 MPa,the internal bond strength decreases by 3%,when hot-press pressure increase from 2.25 MPa to 3 MPa,the interna]bond strength decreases by 6%.
出处
《林产工业》
北大核心
2016年第7期24-27,共4页
China Forest Products Industry
基金
湖南省教育厅重点项目(11A129)
关键词
泡桐刨花板
均质结构
力学性能
甲醛释放量
Paulownia particleboard
Homogeneous structure
Mechanical property
Formaldehyde emission
