Martindale Abrasion Tester Test Result Evaluation

The method and standard system for determining the wear resistance of fabrics by the Martindale method is systematically introduced, pointing out that the relationship between European standards, German standards, American Society for Materials standards and Chinese standards and the international standard ISO equals the assumed or modified relationship. There are three methods of measuring the abrasion resistance of fabrics by the Martindale method: the method of measuring sample damage, the method of measuring mass loss, and the method of changing the appearance quality. Of the three methods, the test method of sample damage is often used. This method has a small error, and the test results are intuitive and clear. The wear resistance of different fabrics is easy to compare. It is generally used in clothing products and decorative fabrics. The expression form of the test results of the method of measuring mass loss andthe method of changing the appearance quality is relatively complicated, but it can reflect the wear resistance of the sample in various stages of friction, and it has strong practical application in the analysis of the use of substances in production enterprises or scientific research institutions sex. Based on my country\'s national standard GB/T21196.2-4-2007, this document summarizes the main content of the three methods of measuring the abrasion resistance of fabrics by the Martindale method, in the hope of helping textile quality inspectors to correctly understand and apply. The Martindale method is used to test the abrasion resistance of fabrics.

Summary of test methods for textile abrasion resistance
1. Determination of sample damage
This method is applicable to all textile fabrics, but not suitable for short-life fabrics.
(1) Selection of abrasives. Choosedifferent standard abrasives according to the characteristics of the sample. Non-coated fabric: woven woolen fabric, coated fabric: No. 600 water sandpaper. The abrasive material and the grinding table are separated by wool felt. After the test, check the surface of the felt. If there are stains or wear, it should be replaced in time. (2) Sampling method. At least 3 pieces, the woven fabric must contain different warp and weft yarns. Jacquard fabric or fancy weave must contain all the characteristic parts of a complete weave. If a complete weave or pattern is large, each part can be sampled individually.
(3) Selection of sample container liner. Measure the mass per unit area of ​​the sample, the area unit of the sample is ≥500g/m2, no foam liner is required, the area unit of the sample is <500g/m2, the foam liner is installed in the sample fixture and is replaced every time Foamvulling.
(4) Selection of the total effective mass of frictional load. The total effective mass of the frictional load includes the mass of the container, the stainless steel disc and the weight of the sample. According to the technical parameters of the Atlas M235 Martindale Abrasion Resistance and Pilling Tester, the mass of the container: (200 ± 1) g; the mass of the stainless steel disc: (260 ± 1) g; the mass of the sample weight : (395±2)g, (594±2)g. According to the use of the sample, there are three choices for the total effective mass of the corresponding friction load according to the characteristics of the fabric: 1) (795 ± 7) g: suitable for workwear, furniture fabrics, bedding products, industrial fabrics; (595±7)g: 2) Applicable to clothing and home textiles (furniture upholstery, bed linen products), non-clothing coated fabrics; (198±2) g: 3) Coated fabrics suitable for clothing.
(5) Abrasive Replacement Cycle
Standard wool cloth: 50,000 times; standard wasandpaper: 6,000 times.
(6) Inspection Interval
Estimate the number of friction times when the sample reaches the fracture and design an appropriate inspection interval based on this if the wear resistance of the sample surface during the wear resistance test is from the plot of the sample state the inspection interval has a certain friction time. (7) The measurement result indicates the total number of rubs when each sample is damaged, and the number of rubs accumulated before the sample is damaged is taken as the number of abrasions.

2. Evaluation method of fabric abrasion resistance
The conditions for determining sample damage are: at least two independent yarns in woven fabrics are completely broken; one yarn in knitted fabrics is broken, Causing holes in the appearance; the fluff on the surface of the pile or cut pile fabric is carried to the bottom or the tufts fall off; the non-geweaving fabric has holes due to friction and the diameter is ≥ 0.5mm; the coating part of the coated fabric is damaged to the exposed base fabric or flaky coating is peeled off. The abrasion resistance of fabrics is generally analyzed and evaluated from three aspects: the measurement of sample damage, the measurement of mass loss, and the evaluation of appearance changes. 1) Determination of sample damage: under a certain load, the sample in the fixture rubs against the abrasive with the path of the movement of the Lissajous curve plane, and the total number of frictions when the sample is damaged is used to determine the wear resistance of the substance. .
2) Determination of mass loss: under a certain load, the sample in the armature rubs against the abrasive with the path of the movement of the Lissajous curve plane, and the mass difference before and after sample rubbing is used for a certain number of rubfingers Determine the wear resistance.
3) Evaluation of appearance change: under a certain load, the sample in the armature rubs against the abrasive with the trajectory of the movement of the Lissajous curve plane, and the wear resistance of the fabric is determined by the appearance change of the sample before and after rubbing.

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