What are the basic properties of textile fabrics
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Textile fabric breaking strength and wear resistance
The basic properties of fabrics mainly include the breaking strength of the fabric (including the tensile breaking strength, tear strength and cracking strength of the fabric, etc. ) and wear resistance, etc.
Tensile breaking strength reflects the firmness of the fabric when stretched by external forces. Indicators include breaking strength, breaking elongation, breaking work, breaking specific work, etc. Breaking strength represents the load per unit cross-sectional area when the fabric breaks. Elongation at break indicates the percentage of fabric elongation at break. The changes in load and elongation of the fabric during the entire stress process are plotted into a coordinate curve, which can be used to calculate the work of rupture of the fabric. The elongation at break curve is related to the weaving shrinkage rate of the warp and weft yarns in the fabric. The greater the weaving shrinkage rate, the greater the elongation at the beginning of stretching. The work of breaking is the work done by resisting external force when the fabric is stretched to break. The greater the work of rupture, the stronger the fabric. The tear strength of the fabric is generally proportional to the yarn strength. For fabrics with a loose structure, the number of yarns under stress increases, and the tear strength of the fabric also increases.
The abrasion resistance of fabrics is the ability of fabrics to resist wear and tear. The so-called abrasion means that the fabric is gradually damaged due to repeated friction by another object during use. There are many types of wear, the main ones are: ① Flat wear: It is the wear state of the fabric that is subject to reciprocating or rotating plane friction, such as the sleeves of clothes, the buttocks of pants, the bottom of socks, etc.; ② Folding wear: It is the folded edge of the fabric Wear and tear, such as the wear and tear on the collars, cuffs, trouser legs and other folded edges of clothes; ③Bending wear: It is the repeated friction of the fabric when it is bent, such as the wear and tear on the elbows of clothes sleeves and the knees of trouser legs; in addition , there are also dynamic grinders that are worn by many factors, flip grinders during washing, etc. The abrasion resistance of the fabric often reflects the fastness of the fabric.
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AAJH. LK‘PO[IUYUKT
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