Evaluation of the change in appearance of fabrics after the abrasion resistance test with the Martindale Abrasion Tester

Evaluation of the appearance change of the fabric after the abrasion resistance test with the Martindale Abrasion Tester:

1. Test Instrument: Martindale Abrasion Tester - Standard Group Hong Kong Ltd.

2. Test standard: GB/T 21196.3

3. Test Principle: The tested fabric is installed in the upper sample holder and installed on the grinding table Abrasive friction on. The friction trajectory is a Lissajous figure. Determine the abrasion resistance of the fabric based on the change in the appearance of the sample.

4. Test steps:
(1) Sample installation: The sample is installed in the sample holder. Center the sample on the compression nut of the sample fixture, with the friction surface of the sample facing down, and the size of the sample is 38.0 + 50 mm. When the weight of the sample is less than 500 g/m2, place the foam pad on the sample. Insert the insert into the union nut, insert the sleeve of the sample holderon it and tighten it.
(2) Abrasive Installation: Place the felt on the grinding table and put the abrasive on the felt. When placing the abrasive, the warp and weft yarns of the abrasive material should be parallel to the edge of the instrument table. When installing, press the heavy hammer against the felt and abrasive on the grinding table, tighten the clamping ring, and remove the pressurized heavy hammer after fixing.
(3) Combination: Combine each device and run the test under the load of (198 ± 2) g of the mass of the sample fixture and pen shaft.
(4) Boat friction.
(5) Perform the friction test to the agreed surface change and determine the total number of frictions required to achieve the specified surface change; or perform the friction test with the agreed number of rubs and evaluate the amount of surface change that occurs.

5. Instrument parameters
(1) Onnumber of stations: 9 digits;
(2) Counting range: 0-999999 times
(3) Maximum stroke: Horizontal 60.5 ± 0.5 mm, vertical 24 ± 0.5 mm
(4) Mass of pressurized material: container: 200 ± 1 g, clothing sample weight: 395 ± 2 g, furniture decoration weight: 594 ± 2 g, stainless steel disc: 260 ± 1 g.
(5) Effective friction diameter of grinding block:
A type 200g (1.96N) friction head (9KPa)￠28.8-0.084mm
B type 155g (1.52N) friction head (12 KPa ￠90- 0.1mm
(6) Relative moving speed between holder and grinding table: 20-70r/min (adjustable)
(7) Weight of sample loading hammer: 2385±10g

6. Precautions:
(1) Strictly implement the relevant specifications of the test samples and auxiliary materials in the standard.(2) When the weight of the test material is less than 500g/m2, it is necessary to add foam plastic to the sample holder.
(3) Pay attention to the effective life of consumables, replace new abrasives and foam plastics for eEvery test, check the stains and wear of the felt and replace if there are stains or visible wear. Felt (felt can be used on both sides).
(4) Carry out the inspection and evaluation of the appearance according to the inspection interval until the appearance of the fabric meets the required change.

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