CAJ | 학술논문

采用高频介质加热技术，研究了不同含水率条件下的多层豆胶胶合板板坯温度场分布和水分迁移情况，以及单板涂胶量对豆胶胶合板胶合性能的影响。结果表明：在高频热压（频率为6．78 MHz，压力为1．0 MPa）过程中，板坯内部温度场分布均匀；干燥效率呈现出从表层向芯层逐渐增加，即由里到外的干燥模式；当单板双面涂胶量为400 g/m2时，胶层平均湿态剪切强度为0．83 MPa，高频热压时间仅为12 min。
채용고빈개질가열기술，연구료불동함수솔조건하적다층두효효합판판배온도장분포화수분천이정황，이급단판도효량대두효효합판효합성능적영향。결과표명：재고빈열압（빈솔위6．78 MHz，압력위1．0 MPa）과정중，판배내부온도장분포균균；간조효솔정현출종표층향심층축점증가，즉유리도외적간조모식；당단판쌍면도효량위400 g/m2시，효층평균습태전절강도위0．83 MPa，고빈열압시간부위12 min。
The distribution of temperature field and moisture migration in the mats with different moisture content through radio-frequency ( RF) heating and pressing was investigated in this work, the influence of gluing content of soyprotein adhesive ( SPA) on the bonding characteristics of plywood was also examined. The results showed that the mats had a u-niformly distribution of temperature field during the RF heating at 6.78 MHz and pressing at 1.0 MPa. The RF drying ef-ficiency increased towards the center of the mats, creating the typical drying pattern from inside to outside. When the glue spread amount ( two faces) of veneer was 400 g/m2 , the wet shear strength of plywood was 0.83 MPa and the work-ing time was just 12 min.