预压对中纤板静曲强度和弹性模量的影响

摘要

预压是中纤板高密度层生成的必要条件，高密度层对提高静曲强度有利，预压压力与静曲强度的提高成正比例关系；但对弹性模量的影响不大。%Preloading is a prerequisite for preparing the chilled layer of medium density fi berboard, which facilitates the enhancement of static bending strength. It was demonstrated that preloading was positively related to the enhancement of static bending strength. However, it was less signifi cant on improving the elastic modulus.