Application of ASTM D4966 Martindale Method for Textile Abrasion Resistance

Application Significance and Feasibility of the ASTM D4966 Martindale Method for Testing the Abrasion Resistance of Textiles
1. This method is generally considered not very good in business and the accuracy of this method in commercial comparative tests is poor, which is due to the nature of the wear tester itself, often different test results are obtained by using the same tester, whether internal or external comparative tests. Although this method is not recommended as a commercial test, it is widely used and preferred, especially in countries outside the United States.
If a dispute arises in business due to different test results, the buyer and seller should conduct some comparative tests to find out the differences between the two laboratories. It may be better to choose an authoritative institution for comparison. At the same time, the dwhether the two parties selected samples are consistent. The general practice is for the two parties to use random sampling to find out the overall level. Once a difference is found between the two parties, it must be corrected and reconciled as soon as possible, otherwise the reason for the difference in results must be explained to the other party.

2. The abrasion resistance test is greatly affected by the test conditions, such as the properties of the wear-resistant cloth, the difference in movement of the sample on the wear-resistant cloth, the tension of the sample, the difference between the sample and the pressure between the wear-resistant cloths, and the size change of the sample will affect the wear resistance.

3. Due to the change of the wear-resistant cloth in the specified test, the test results are different. The wear-resistant cloth should be replaced regularly and regularly checked with the standard. The wearaste cloth can only be used once and must be replaced after the usage limit is reached. A carbide or equivalent surface can be used as a durable wear plate. At present, in a series of tests, it is not necessary to replace the wear plate accordingly. Due to the inconsistency of the actual use situation, the same wear plate can be used in the same period. Inner surface changes can be inconsistent. Due to the change in the surface finish, the wear-resistant plate will be changed. In addition, the wear-resistant plate must be cleaned regularly due to the influence of other substances such as test samples. The evaluation method and different evaluators will also influence the final results of the wear test.

4. The abrasion resistance of textiles measured by instruments in the laboratory can be used as an evaluation of the performance index and durability of textilesin practice.

5. Routine assessment of abrasion resistance is applied to all kinds of fabrics, including woven fabrics, non-woven fabrics, knitted garment fabrics, home textiles, industrial fabrics, carpets, etc. Thus, there are many different types of abrasion resistance testers, abrasion resistant cloths, test conditions, test procedures, methods of evaluation of wear resistance, interpretation of results, etc.

6. All test methods and instruments used to measure abrasion resistance, if they are far apart, the results obtained by different laboratories and different operators are very different. But these methods are widely used.

7. Since there is a definition of how to measure wear resistance, it is necessary to use a standard method, which can clarify the problem and minimize disputes.

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