Comparison of wear resistance between Martindale flat abrasion method and taber

Leather abrasion resistance is a characteristic of leather that resists wear and tear. Abrasion of leather is an important cause of damage to leather. Although the wear fastness of leather has not yet been assessed as a *standard*, the abrasion resistance test of leather is still indispensable to measure its quality and is of great importance in assessing the fastness of leather to wear. According to the test with different instruments, leather abrasion resistance test commonly used methods are mainly two: Martindale flat grinding method and taber abrasion resistance method, Shanghai Qianshui precision mechanical and electrical technology limited company is a textile test instrument manufacturers, can provide a variety of textile testing instruments, welcome the demand of customers timely telephone inquiry.

 

1、Martindale flat abrasion method

 

Test equipment.

 

Martindale Abrasion Tester

 

Reference standard

 

GB/T21196-2007 "Martindale method for the determination of abrasion resistance of fabrics".

 

Martindale flat abrasion method and taber abrasion method test leather abrasion resistance comparison analysis

 

Test principle.

 

The circular specimen in the specimen jig is rubbed against the abrasive (i.e. the standard fabric) under a defined load with the flat motion of the Lissajous pattern, the specimen jig can be freely rotated around its axis perpendicular to the horizontal plane, and the abrasion resistance of the leather is determined according to the total number of times the specimen is rubbed to break.

 

Test method.

 

The test will be a certain size of test sample in the specified pressure and standard abrasive contact with each other, and make the test sample to Lishajou trajectory relative to the abrasive movement, so that the test sample subject to multi-directional uniform wear.

 

2、taber abrasion method

 

Test apparatus.

 

taber abrasion meter

 

Reference standard

 

GB/T2726-2005 "Determination of wear resistance in physical and mechanical testing of leather".

 

Martindale flat abrasion method and taber abrasion method test leather wear resistance comparison analysis

 

Test principle.

 

Pre-grinding for 25 revolutions, the specimen to be tested is placed on the horizontal platform of the TABER abrasion testing machine and rotated, two grinding wheels are given a specific pressure to press on the test piece optionally, the axes of the grinding wheels are parallel to the horizontal plane, one grinding wheel faces outwards and the other faces inwards, all changes in the test piece are recorded within a certain period of time.

 

Test method.

 

A sample with an outside diameter of 108mm and an inside diameter of 8mm is cut with a cutter. A hard sticker of the same size is then applied to the back of the sample. Place the central hole of the sample on the rubber gasket of the screw, put the gasket on and secure the sample with the compression nut. The fixing ring is then put on and the fixing ring screw is locked in place with a spanner. Attach the two H18 grinding wheels to the support arm and apply a force of 250±10g per wheel to the sample being tested, ensuring that the labelled side is facing outwards so that the weight of the wheels is 500g. Set the number of tests according to the standard and set the slewing speed to 72 rpm. Then start the start button, turn on the instrument with a rotation speed of 60±5 times/min, rotate horizontally and carry out the test according to the required number of times. During the test, the brush is used to brush away the surface adherence of the specimen, observe the wear of the test, grind the leather to the specified end point and record the number of revolutions.

 

From the above two test test methods, the results expressed for the different material wear resistance test methods are not identical. The Martindale flat abrasion method indicates wear resistance by the end point and change in appearance, the taber abrasion method records the number of rubs as an indicator of wear resistance.