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Brief introduction of fiber's abrasion fastness and water absorption 2021.01.05

The characteristics of the fiber determine its quality characteristics and its applicability under specific application conditions. Standard tests and laboratory tests are generally used to measure and compare fiber characteristics.
Abrasion fastness
Abrasion fastness refers to the ability to resist wearing friction, which helps to improve the durability of the fabric. Clothing made of  600D fabric fibers with high breaking strength and good abrasion fastness can be durable for a long time, and signs of wear and tear will appear after a long time.
Nylon is widely used in sports jackets, such as ski jackets and football blouses. This is because its strength and abrasion fastness are particularly good. Acetate fiber is often used as the lining of outerwear and jackets because of its excellent drape and low cost. However, due to the poor abrasion resistance of acetate fibers, the lining is easy to wear or form holes before the outer fabric of the jacket wears correspondingly.
Water absorption
Water absorption is the ability to absorb moisture, and it is usually expressed in terms of moisture regain. The water absorption of the fiber refers to the percentage of moisture absorbed by the dry fiber in the air under the standard conditions of a temperature of 70°F (equivalent to 21°C) and a relative humidity of 65%.
Fibers that absorb water are called hydrophilic fibers. All natural animal and plant fibers and two kinds of man-made fibers-viscose fiber and acetate fiber are hydrophilic fibers. Those fibers that have difficulty in absorbing water or can only absorb a small amount of water are called hydrophobic fibers. Except for viscose fiber, Lyocell fiber and acetate fiber, all man-made fibers are hydrophobic fibers. Glass fiber does not absorb water at all, and other fibers usually have a moisture regain of 4% or less.
The water absorption of fiber affects its many applications, including:
●Skin comfort: Due to poor water absorption, the flow of sweat will cause a cold and wet feeling.
●Electrostatic: With hydrophobic fibers, problems such as clothes sticking and sparking will occur. Because there is almost no water to help evacuate the charged particles accumulated on the surface of the fibers, dust is also brought to and adhered to the fibers due to static electricity.
●Dimensional stability after washing: after washing, hydrophobic fibers shrink less than hydrophilic fibers, and the fibers rarely swell, which is one of the reasons for the shrinkage of the fabric.
●Stain removal: It is easy to remove stains from the hydrophilic fibers, because the fibers will inhale both detergent and water.
●Water repellency: Hydrophilic fibers usually need more water repellent and durable post-treatment, because this chemical treatment can make these fibers more water repellent.
●Wrinkle recovery: Hydrophobic fibers usually have better wrinkle recovery, especially after laundering, because they do not absorb water, do not swell and dry in a wrinkled state.

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