Martindale abrasion test Assessment of textile abrasion resistance

Abrasion resistance is an important indicator of the quality of textile products. It directly affects the durability and use effect of the product. Refers specifically to the characteristics of resistance to wear between fabrics or other fabrics in the process of repeated friction.

1. Determination of sample damage
This method is applicable to all textile materials. But not for fabrics with a short lifespan.
1. Selection of abrasives.
Select different standard abrasives according to the characteristics of the sample. Uncoated fabric: woven plain woolen fabric; coated fabric: No. 600 grit sandpaper. Abrasives 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.
Minimum 3 pieces. Woven fabric should contain different warp and weft yarns. The jacquard fabric or fantasThe binding must contain all the characteristic parts of a complete binding. If a complete binding or pattern is large, each part can be sampled separately.
3. Selection of sample fixture liner.
Determine the mass per unit area of ​​the sample, the unit area of ​​the sample is ≥500g/m2, no foam liner is needed, the unit area of ​​the sample is <500g/m2, and the foam plastic liner was installed in the sample fixture each The foam pads were replaced before each test.
4. Selection of the total effective mass of the friction load.
The total effective mass of the friction 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 M235Martindale tester for abrasion resistance and pilling. Mass of container: (200 ± 1) g Mass of stainless steel disc: (260 ± 1) g Mass of sample weight: (395 ± 2) g (594 ± 2) gr. Dependentof the target of the sample, there are three kinds of total effective mass of the corresponding friction load according to the characteristics of the fabric:
1) (795±7)g: suitable for workwear, furniture upholstery, bed linen, industrial fabrics:
2) (595±7)g: suitable for clothing and home textiles (furniture upholstery, bedding products), non-consumable coated fabrics;
3) (198±2 )g: suitable for clothing coated fabric layers of fabric.
5. Abrasive replacement cycle
Wool standard dust: 50,000 times; standard water sandpaper: 6000 times.
6. Inspection Interval
Estimate the number of times friction occurs when the sample is damaged and design a suitable one based on this. The inspection interval is used as an observation point for the wear condition of the sample surface during the sample\'s wear resistance test. The inspection interval is a certain number of frictions.
7. The measurement result means
Measure the total number of rubsing when each sample is damaged, and use the number of times friction built up before the sample is damaged as the number of times wear resistance .

2. Determination of mass loss
Applicable to all textile materials, but not suitable for short-life fabrics. The selection of the abrasive, the sampling method, the selection of the sample attachment liner, the selection of the friction load, the total effective mass and the replacement cycle of the abrasive are consistent with the determination method of sample damage. The description is not repeated here.
1. Inspection interval
Design a suitable inspection interval. As an observation point for the wear condition of the sample surface during the sample wear resistance test, the inspection interval is a certain number of friction times. During the test, according to the set inspection interval. Check the wear of the sample when it is availablehas been reached or the specified friction times have been reached. The trial is over. The measurement of mass loss is divided into two cases: the first case is to measure the difference Am between the mass of the sample before the test and the mass of the test sample after the wear test at each inspection interval: the second case. When the sample reaches the wear point, measure the difference Am between the mass of the sample before the test and the mass of the test sample after the wear test.
2. Test Results
Using the measurement of fabric abrasion resistance - the measurement method of mass loss. The test results include the following data: 1) the measured mass loss Am when each inspection interval is reached, 2) the sample reaches the wear point, i.e. the mass loss Am when the test reaches the end point: 3) the mass loss A171, which related to the friction 4) The wear resistance index (times/g), the calculation formula is: Ai=N/Am |Ⅳ_one is the totalnumber of times friction.
3. Appearance quality change
Measurement of fabric abrasion resistance: The appearance quality change method is suitable for short-life textile fabrics. The selection of abrasives, sampling method, selection of sample attachments and liners are consistent with the method of determining the damage of dust samples. The description is not repeated here.
(1) Total effective mass of friction load (198±2)g
(2) Abrasive replacement cycle: replace new foam plastic and standard abrasive for each test;
(3) Evaluation test Random sample Appearance change requirements:
1) Abrasion resistance test on the surface change specified in the contract, and the number of rubs is used as the measured value of abrasion resistance. Design appropriate inspection intervals. As an observation point for the monster\'s appearance change.
2) Abrasion test to thenumber of frictions stipulated in the agreement. Changes in the surface of the sample were assessed by comparison with an untested sample of the same substance.
(4) Test Results:
Surface changes include discoloration, fuzzing and pilling. If the end point of the wear test is to achieve the surface change specified in the agreement, the inspection agreement will specify the degree of discoloration, pilling and pilling on the surface of the sample, and the test results will use the sample to meet the degrees of discoloration, pilling and pilling specified in the inspection agreement. Expressed in the number of times rubbing. If the end point of the wear test is the number of rubs specified in the agreement. The test result is that the specified number of rubs is reached after the wear test. After the test, compare the sample with the original and rate the degree of discoloration, fluff formationand pilling of the sample after the test, and use the degree of discoloration, pilling and pilling of the sample after the test to determine the change in appearance quality.

3. Conclusions
The above systematically introduces the method standard system for determining the abrasion resistance of Martindale fabrics, pointing out that European standards, German standards, American Society for Materials standards and Chinese standards are in line with The relationship of the International Standard ISO is the relationship of equivalent adoption or modified adoption. There are three methods of measuring the abrasion resistance of fabrics by the Martindale method: the sample damage test method, the mass loss test method, and the appearance quality change method. The most commonly used of the three methods is the monster damage method, which contains a small flaw. The test results are intuitive and clear. The wear resistance of various fabrics is easy to determinesimilar and is widely used in clothing products and decorative fabrics. The measurement method of mass loss and the method of changing the appearance quality are relatively complicated to express the test results, but they can reflect the wear resistance of the sample in different friction stages. Analysis of the use of substances in manufacturing companies or scientific research institutions. Has strong practicability. This document is based on my country\'s national standard GB/T 21196.2-4-2007. This article summarizes the main contents of the three methods of measuring the abrasion resistance of fabrics by the Martindale method, hoping to help textile quality inspectors understand andThe abrasion resistance of fabrics were tested by the Martindale method.

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