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首页> 外文期刊>Journal of pulp and paper science >Relationships Between the Local Sheet Structure and Z-Direction Compressive Characteristics of Paper
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Relationships Between the Local Sheet Structure and Z-Direction Compressive Characteristics of Paper

机译：纸张局部结构与Z向压缩特性的关系

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摘要

The z-direction compressive characteristics of paper were measured using a micro-indentation technique. The mean compressive tangent modulus was shown to be dependent on the apparent density and relatively independent of the densification method (refining, wet pressing and calendering) or fibre type used (kraft hardwood or softwood). The local grammage, thickness and compressive properties were measured for a set of experimental sheets. The correlation between the local apparent density and local tangent modulus was found to be insignificant. This indicated that the local tangent modulus is dependent on factors other than the apparent density. The local thickness variation was shown to be sensitive to the sheet structure. The correlation between this measurement of the sheet structure and the local tangent modulus was found to be significant, indicating that the thickness variation is more important for determining the local compressive characteristics than is the apparent density.
机译：使用微压痕技术测量了纸的z方向压缩特性。结果表明，平均压缩切线模量取决于表观密度，并且与致密化方法（精制，湿压和压延）或所用纤维类型（牛皮木或软木）相对不相关。测量一组实验片的局部克重，厚度和压缩性能。发现局部表观密度和局部切线模量之间的相关性不显着。这表明局部切线模量取决于表观密度以外的因素。结果表明局部厚度变化对板材结构敏感。发现该片状结构的测量值与局部切线模量之间的相关性显着，表明厚度变化对于确定局部压缩特性比表观密度更重要。

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