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Martindale abrasive tester price

Author:QINSUN Released in:2023-03 Click:160

Scope of application:

Test textile products according to the Martindale method standard system and its relationship, and use this test to test the wear resistance of fabrics, and wear resistance is an important indicator of the quality of textile products, which directly affects the durability and use effect of the product.Abrasion resistance refers to the characteristics of resistance to wear between fabrics or during repeated friction with other fabrics.

Working principle:

Abrasive friction on the table. The friction trajectory is a Lissajous figure. After the specified friction phase according to the test requirements, remove the fabric and calculate the abrasion resistance index or evaluate the fuzzing and pilling level of the sample through visual description.

Operation method

1. Preparation of samples. In a standard environment, put plate and not stretched by different standards. Such as 24 hours (GB/T 4 80 2 .2-19 97), 16 hours (EN ISO 12947-4:1998)

2. Selection of samples. Cut a piece of sample from several parts of the whole door fabric and the sample should be representative. If it is a nice fabric, the sample should contain all the different textures and colors of the fabric surface;

3. Remove the load and load shaft from the testing machine;

4 Remove the top plate and the test fixture;

5. Sample device: loosen the retaining ring on the test fixture, remove the hold-down piece from the sample and place the sample in the base of the test fixture. When the tested fabric is not more than 500 g/m2, a piece of polyester foam is placed between the sample and the metal block of the sample clamp; when it is more than 500 g/m2, or a composite fabric, no foam is required. The samples on each sample holder must be of the same spanning are subject.

6. The device of wool felt and abrasive cloth: put the felt and abrasive on the grinding table, put the weight on the abrasive, then put the thrust washer and tighten the nut so that the thrust washer holds the abrasive on the grinding table.

7. Place the grinding head on the abrasive to pressurize;

8. Place the test fixture with the sample facing down on the base fixture and adjust the circle of the test fixture . groove is aligned with the load axis, so that the load shaft is inserted into the circular groove of the test fixture;

9. Set the number of times according to the standard, start the switch, start the test, and reach the set number of times Automatic shutdown:

10. Record the sample and compare it with the standard photo in the evaluation box

Martindale abrasion tester Precautions for use :

1. The friction cloth cannot be replacedused frequently and a friction cloth should be replaced each time a test is completed;

2. SheepThe felt can be used repeatedly, and if the surface is worn or stained, it should be replaced and can be used on both sides are used;

3. The insole should be dressed first and then the Martindale wear test;

4. After the test is completed and the surface table of the sample shows abnormal phenomena such as abrasion, broken yarn, pilling, severe pilling and severe abrasion, it will be judged as unqualified.

5. When preparing samples, pay special attention to avoid hair changes on the cutting edges to avoid unnecessary loss of quality and appearance changes.

6. Pay attention to operating specifications and personnel safety during instrument operation.

Maintenance of Martindale AbrasionTester

1. The instrument should be regularly cleaned and cleaned to ensure the cleanliness of the test instrument;

2. Check the test instrument regularly to see if there is any abnormality is;

3. During the use of each user, they should use according to the correct method of use, and not use contrary to regulations, so as not to damage the instrument and shorten the service life of the instrument ;

4. After using the test instrument, each user should put the instrument properly and check the instrument Perform the corresponding cleaning to ensure that the instrument is clean;

5. When the instrument is not in use, power off the instrument and keep the instrument clean.

The wear of textile products mainly manifests itself in the following five aspects:

(1) The friction between fibers Due to fatiguethe break the fiber fragments in the yarn, causing the yarn to break.

(2) The fibers are pulled out of the fabric, loosening the yarn and structure of the fabric, and the fibers can be pulled out under repeated action, resulting in thinner yarns, thinner fabrics and even disintegration .

(3) The fiber is cut and broken, causing the yarn to break.

(4) The surface of the fiber is worn and the surface layer of the fiber is fragmented and lost.

(5) Friction generates high temperatures, causing the fiber to melt or plastically deform, which affects the structure and mechanical properties of the fiber.