泡沫成形法制备纸页泡沫尺寸分布

Distribution of Foam Pore Size in the Paper Based on Foam Forming

探讨制备泡沫时,搅拌转速、气含率、表面活性剂用量及浆料添加与泡沫尺寸分布、成形纸页特性间的关系。结果表明:搅拌转速增大,泡沫平均尺寸变小;气含率、表面活性剂用量对泡沫平均尺寸影响较小且无明确线性关联;浆料加入能够使泡沫平均尺寸减小;泡沫成形纸页松厚度高、孔径大、透气性好。通过制备出尺寸分布较好的泡沫能够使泡沫成形法制备的纸页具有松厚度高、孔径分布均匀、匀度好等特性。

Focusing on the relationship of pore size distribution, paper characteristic with several parameters such as concentration of surfactant, rotation speed of the mixer, air content of the foam and the addition of refined pulp. The results showed that the average bubble radius decreases clearly with the increasing rotational speed of the mixer, there is no clear relationship between the concentration of surfactant and the bubble size, the addition of fibers causes a significant decrease in the average bubble size. In paper sheets based on foam forming, there are more large pores, high value of bulk and air permeability compared to the water-formed sheets. The paper sheet has the characteristic of high value of bulk, evenness the uniformity of pore size distribution and so on.