CAJ | 학술논문

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。
척촌은정성시형량면간중조방재질량적중요지표지일。위차，통과정교시험연구료밀도、시효량、열압온도화시간4개공예삼수대면간중조방재척촌은정성적영향。결과표명：재시험범위내，면간중조방재적간축습창성표현출흔강적방향성，방재상하방향적척촌간축솔화흡습팽창솔균소우전후방향；면간중조방재상하、전후방향적간축솔화흡습팽창솔수착방재밀도적증가이증대；수착시효량적증가、열압온도화시간적승고화연장이유소강저。
Dimensional stability is an important indicator of the quality of cotton -stalk 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 cotton -stalk 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 tempera-ture and time .