Method for determining capillary radius distribution of flexible porous system by mass classification

Abstract

The invention discloses a method for determining the capillary radius distribution of a flexible porous system by mass classification. The method comprises the following steps of: firstly, preparing a sample plate used for determination, trimming the sample plate into a small test strip with the length of 30(+ / -)1cm and the width of 2.5(+ / -)0.1cm and arranging marks at equal intervals along the width direction from the lower end of the small test strip; secondly, washing and drying the small test strip and hanging the small test strip on a fabric hanging device to enable the lower end of the small test strip to just immerse into a liquid level; then, placing the small test strip and the fabric hanging device together into a constant temperature and constant humidity room and taking down the small test strip after standing for 47 to 49 hours; cutting off the small test strip along the marks; respectively weighing the obtained small test strips and processing data through a formula; and obtaining a fabric capillary radius distribution histogram according to a data processing result and further obtaining a curve distribution graph and an integrogram so that the corresponding relation of the cotton fabric warp and weft density and the capillary radius distribution can be analyzed and compared.

Description

Technical field [0001] The invention relates to a method for measuring the capillary pore size distribution of a flexible porous system. Background technique [0002] The wettability of the fabric is very important for its wet processing and thermal wet comfort. The wettability of liquid to solid depends on the chemical nature and surface structure of the solid. As a partially ordered aggregate of pores with openings at both ends, the wettability of fabrics is usually closely related to the distribution of pores, because the transport of moisture, organic solvents and sweat is mainly in the process of wet processing or taking. The process of adsorption, diffusion, permeation, evaporation and other processes involved in the pores all depend on the structure of the pores (shape, roughness, size, distribution, etc.). In view of the complexity of the fabric structure, the current methods for measuring the wettability of fabrics are measured on a larger scale than the pores, mainly ...

AI Technical Summary

Problems solved by technology

In order to explore the relationship between fabric structure and wetting performance, we have carried out a series of researches in the past five years. We have done preliminary research on the distribution of capillary warps perpendicular to the plane of the fabric, but so far there is no relevant measurement of the capillary warps along the plane of the fabric. distribution of reports

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