1. The importance of fabric abrasion resistance testing.
Fabric abrasion resistance refers to the ability of a fabric to resist wear and tear, and is one of the important indicators to measure the quality of a fabric. In daily life, fabrics are often damaged by friction, squeezing, hooking and other factors, resulting in a shortened service life. Therefore, it is necessary to test the abrasion resistance of fabrics. By testing the abrasion resistance of the fabric, you can understand its quality status, its service life, and provide consumers with a more reliable basis for purchasing. At the same time, for manufacturers, wear resistance testing is also a necessary means to improve product quality and enhance market competitiveness.
Second, the basic principle of the universal testing machine.
The universal testing machine is a kind of equipment that can test the mechanical properties of various materials, and its basic principle is to apply a certain pressure or tensile force to the sample, simulate various forces that may occur in the actual use process, and carry out wear, tensile, compression and other tests on the sample to test the mechanical properties and wear resistance of the material. In the fabric abrasion resistance test, the universal testing machine mainly simulates the actual use environment of the fabric, and repeatedly rubs, extrudes and other operations to test its wear resistance.
3. The operation process of fabric abrasion resistance test.
1.Prepare the specimen.
A representative number of fabric specimens are selected and fixed in the grips of the testing machine to ensure that the specimen is flat and wrinkle-free. The size and shape of the specimen should be selected according to the requirements of the testing machine.
2.Set the test parameters.
According to the characteristics of the fabric and the purpose of the test, set the parameters of the testing machine, such as friction pressure, friction times, friction speed, etc. These parameters should be set in accordance with the provisions of the relevant standards.
3.Start the trial.
Start the testing machine so that the specimen is in contact with the friction medium and start the friction test. During the test, a constant pressure and speed should be maintained to ensure that the specimen is worn evenly. At the same time, attention should be paid to the observation of the wear of the sample, and the amount of wear, wear form and other information should be recorded.
4.Data analysis and processing.
At the end of the test, the wear of the specimen is measured and recorded, and the corresponding wear resistance index is calculated. According to the test data, the influencing factors of fabric abrasion resistance are analyzed, and the methods and ways to improve the abrasion resistance of fabrics are analyzed.
Fourth, the influencing factors of fabric abrasion resistance test.
1.Frictional pressure.
Frictional pressure is one of the important factors affecting the abrasion resistance of fabrics. Within a certain range, as the frictional pressure increases, the abrasion resistance of the fabric will improve. However, when the frictional pressure exceeds a certain value, the wear of the fabric increases, and the wear resistance decreases instead. Therefore, choosing the right friction pressure is one of the keys to improving the abrasion resistance of fabrics.
2.Number of rubs.
The number of rubs is also one of the factors that affect the abrasion resistance of the fabric. Within a certain range, as the number of frictions increases, the abrasion resistance of the fabric also increases. However, when there are too many frictions, the fibers of the fabric break and fall off, resulting in a decrease in its abrasion resistance. Therefore, it is necessary to choose the right number of rubs according to the characteristics of the fabric.
3.Friction velocity.
The influence of friction velocity on the abrasion resistance of fabrics is also significant. Within a certain range, as the friction velocity increases, the abrasion resistance of the fabric also increases. However, when the friction speed is too high, the wear of the fabric increases, and the abrasion resistance decreases. Therefore, choosing the right friction speed is also one of the keys to improving the abrasion resistance of the fabric.