磨削木竹材表面粗糙度对胶合强度的影响

Effect on bonding strength of sanding surface roughness of wood and bamboo

采用探针法测定了水曲柳、毛竹和落叶松砂带磨削表面的粗糙度,分析了影响表面粗糙度的因素,并采用心理分析方法讨论了的粗糙感与表面粗糙度关系;还分析了木材表面粗糙度对胶合强度的影响。为获得不同树种及不同粒度砂带磨削对工件表面粗糙度和粗糙感的影响,实验测量了磨削工件表面的粗糙度和粗糙感触觉心理量、视觉心理量。研究结果表明,材种和表面组织构造影响表面粗糙度;表面粗糙度值因为材种不同而不同,随着加工精度的提高而降低;水曲柳、毛竹和落叶松表面粗糙感的触觉心理量与视觉心理量呈正相关;阔叶材、竹材、针叶材表面粗糙感的触觉心理量与视觉心理量的相关性逐渐增大;触觉心理量与表面粗糙度参数的相关性要高于视觉心理量。砂带磨削木竹材表面的胶合强度在磨削砂带粒度为100～150目时达到最大值。

Surface roughness of Fraxinus mandshurica, Moso Bamboo（Phyllostachys pubescens） and Larix dahuria sanding with different kinds of abrasive belt was measured by a fine stylus method and analyzed the various factors. Then the surface roughness sense was analyzed by a psychometric method, between the psychological values of touching and vision was discussed. In order to obtain the effect of the species, the sanded surfaces of wood and bamboo pieces were used to measure the surface roughness and psychological values of touching and vision. Results show that species and surface structure could affect the surface roughness of wood and bamboo. The roughness of wood and bamboo surfaces decrease with the increase of processing precision. The correlation between the psychological values of touching and vision, soft wood is a little higher than bamboo, and that of bamboo is a little higher than hard wood. The correlation of touching psychological values with surface roughness is higher than vision psychological values. The bonding strength of the wood and bamboo gets to the peak after sanding with granularity 100-150 sanding belt.