Analysis of abrasion resistance test of automotive leather

A very important application of leather is in the field of automobile interiors. With the rapid development of the automobile industry, the inspection of various performances of automobiles in the industry is becoming more and more stringent. For example, the abrasion resistance test of automotive leather is an example. The standard stipulates that the wear resistance of leather for car seats and steering wheels must meet: The test methods of wear resistance of leather for automobiles mainly include Taber wear resistance method, Martindale wear resistance method and STROLL wear resistance method. Taber Abrasion Tester is a Taber Abrasion Tester, Martindale Abrasion Tester is a Martindale Abrasion Tester, (Hong Kong) Co., Ltd. is a manufacturer, and can provide relevant test instruments. Customers in need are welcome to inquire . Taber wear method: The American standard ASTM D 3884-2009 specifies the Taber wear method. Test principle: The sample to be tested is placed on a rotating platform, and the two rolling friction wheels above it perform rotational friction motion with the sample under a certain load to wear the sample. One friction wheel faces outward and the other friction wheel faces inward to rub the sample, forming a circular wear mark. The degree of wear of the specimens was evaluated visually after the specified number of rubs. Operation process: Fix the sample face up on the rotating platform, and install the selected grinding wheel on the support bar. After selecting a suitable load, lower the support rod to make the grinding wheel contact the surface of the sample, connect and turn on the vacuuming device. Start the instrument and perform the test according to the number of rotations set by the counter. After the test, remove the sample, check and record the wear of the sample, and use a gray sample card according to GB/T 250-2008 'Color fastness test of textiles - Gray sample card for evaluating discoloration'. Martindale abrasion resistance method: Martindale abrasion resistance method is often used in textile abrasion resistance test and pilling evaluation, GB/T3903.16-2008 'Shoe upper surface, lining and inner pad test method abrasion resistance' The test method for testing shoe uppers by the Martindale method is specified, and it is also applicable to the test of abrasion resistance of automotive leather. The test specimen was rubbed with a standard friction fabric under constant pressure using the Martindale abrasion method. The relative motion of the Lissajous figure between the rubbing fabric and the sample produces friction in all directions. After completing the specified number of rubbing times, evaluate the damage degree of the sample. Operation process: During operation, a flat pad with a thickness of (3±1) mm, the density is (30±3) kg/m3 of polyurethane foam, and fix the sample on the grinding head with a clamping ring, then place the table felt on the grinding table, and then place the friction fabric on the table felt, and will produce (2±A weight with a pressure of 0.2) kPa is placed on the friction fabric, and then the friction fabric is fixed. Install the grinding head on the wear tester and apply (12±0.2) The pressure of kPa, start the instrument, and test according to the number of rotations set by the counter. After the test, remove the sample, check and record the wear of the sample, and use a gray sample card to evaluate the color change in the test area according to GB/T 250-2008 'Textile Color Fastness Test - Gray Sample Card for Assessing Discoloration'.

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