微米木纤维颈椎夹板的制备及其弹性模量模型

Preparation of micron wood fi bre cervical splint and its elastic modulus model

为制备出在强度上满足医用条件的颈椎夹板，以微米级的木纤维为材料，通过对密度0.439 g/cm3、含水率12%～15%的毛白杨进行微观组织观察，发现木材内部呈现稳定的蜂窝状单向多孔结构，用其切削出平均厚度为52 mm的木纤维，具有良好的韧性和强度，经过模压可用于制造医用颈椎夹板。对木纤维不同铺装状态下的弹性模量进行计算，得出了在模压过程中纤维尺寸、密度、压缩量、施胶量、胶合程度等因素都会对夹板弹性模量产生一定的影响。

In order to meet the medical criteria in the strength of cervical splints, with micron grade wood ifber as the material, the micron wood ifbre cervical splint was prepared. Through the micro-organisational observation on Populus tomentosa wood ifbre （its density was 0.439 g/cm3 and its moisture content was between12% ~ 15%, it was found that the interior structure of the wood ifbre showed a stable honeycombed unidirectional spongy structure. The wood ifbre had good toughness and intensity when it was cut into the micron wood ifbre （average thickness 52mm） and it can be uses in medical cervical splint manufacturing after molded. By calculating the elastic modulus values under the different pavement states of wood ifbers, it also could be found that in the molding process, the ifber size, density, amount of compression, amount of glue, gluing effect and other factors all will cause influences to the elastic modulus of the cervical splint.