工艺参数对棉秆重组方材尺寸稳定性的影响研究  

The Effect of Technical Parameters on Dimensional Stability of Cotton-stalk Reconsolidated Square Material

作　　者：张静静[1] 宋孝周[1] 白鹭[1] 陈慧[1] 

机构地区：[1]西北农林科技大学机电学院,陕西杨凌712100

出　　处：《农机化研究》2015年第4期136-139,共4页Journal of Agricultural Mechanization Research

基　　金：陕西省科技计划农业攻关项目(2012K02-16);西北农林科技大学基本科研业务费专项资金项目(QN2009044)

摘　　要：尺寸稳定性是衡量棉秆重组方材质量的重要指标之一。为此,通过正交试验研究了密度、施胶量、热压温度和时间4个工艺参数对棉秆重组方材尺寸稳定性的影响。结果表明:在试验范围内,棉秆重组方材的干缩湿胀性表现出很强的方向性,方材上下方向的尺寸干缩率和吸湿膨胀率均小于前后方向;棉秆重组方材上下、前后方向的干缩率和吸湿膨胀率随着方材密度的增加而增大;随着施胶量的增加、热压温度和时间的升高和延长而有所降低。Dimensional stability is an important indicator of the quality of cottonstalk reconsolidated square material . The paper investigated the effect of the four technical parameters ,namely density ,resin content , hot-pressing temperature and time , on dimensional stability of cotton-stalk reconsolidated square material by means of orthogonal experiments . During the range of experiment , the result showed that shrinkage and hygroscopic expansion of cottonstalk reconsolidated square material exhibited apparent directionality , and the shrinkage and hygroscopic expansion rate of the vertical direc tion were less than the anteroposterior direction ’ s.Shrinkage and hygroscopic expansion rate of vertical and anteroposterior direction increased with the increase of density , and decreased with the increase of resin content , hot-pressing temperature and time .

关 键 词：棉秆重组方材 干缩率 吸湿膨胀率 尺寸稳定性 

分 类 号：S226.7[农业科学—农业机械化工程]