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Leather atomization is an important testing item of leather materials, especially car interior materials. The purpose of testing is to simulate the internal decorative materials of the car under the high temperature closed environment of the car to obtain the interior material Misty performance parameters, leather atomization tester is a commonly used detection instrument. International standards ISO6452, German standard DIN75201, US standard SAEJ1756, and Chinese standard QB/T2728 and other regulations, testing methods include reflection methods, quality methods and fogging methods.
Reflex method: The gas sample of the car interior material is condensed on the low -temperature glass surface in the foggy cup. The reflection value of the glass uses the percentage of this ratio to indicate the atomization value;
Quality method: the car interior material sample in the foggy cup On the low -temperature aluminum foil, by the quality changes of aluminum foil before and after the test, this quality difference is used to represent the atomization value of the sample;
The samples of the sample in the foggy cup are condensed on the surface of the low -temperature glass, which is compared with the misty value of the glass and blank test glass attached to the volatile object to obtain the atomization value of the sample.
All three detection methods can characterize the atomization performance of the car interior material, but the atomization value is not comparable by the three methods. Moom performance, this detection system is mainly composed of three parts: test box, control system and detection system.
Abrasion resistance test is also a project that must be tested by many materials at present. It is an important indicator of the physical properties of the material. The main method of abrasion resistance testing in leather is: learning and abrasion -resistant, Taber wear resistance, Martin Dell wear, and Stroll wear resistance method.
Learning vibration -shaped wear -resistant method:
Test the dyed upper and lining leather, and the degree of damage and discoloration after friction. The test method is the test film that is wrapped on the surface of the test table with a dry or moist white wool felt on the surface of the friction.
The design of the instrument is used to perform leather surface friction fastness testing, and the degree of color loss of the leather surface or coating is determined to evaluate the amount of color transfer from the sample to the friction pad. Essence
Testing can be performed under dry or humid conditions. Use dry friction pads or premature friction pads in distilled water or sweat solvents before testing. The same machine can also be used to evaluate the wear resistance of the insole. Veslic-C4500 and IUUU and 450 are suitable for this test.
This tester is suitable for testing back and forth friction on the surface of the material on the surface of the material. The friction elements, circulation quantity, load and temperature can be adjusted to meet the requirements of test materials.
Taber wear-resistant method:
American standard ASTM D 3884-2009 Standard Test Method for Abrasion Resistance Fabrics (Taber Appratus) pairs of Taber Regulations. The test principle of the Taber wear resistance is: the test sample is placed on a rotary platform, and the sample is worn with the two rolling friction wheels above it at a certain load with the sample. One friction wheel, the other friction wheels facing the inner friction sample to form a circular wear trace. After the specified number of frictions, the degree of wear of the sample is evaluated by the appearance. Taber's grinding instrument can simulate the real conditions of use or meet the test conditions specified in the standard. You can select a variety of different abrasive medias and accessories for different tests. The commonly used Taber mills of leather tests are H-18, H-22 and H-10.
Martin Dell's wear resistance method:
Martin Dell's wear resistance method is often used for wear resistance tests and hair and kick evaluation. Martin mainly uses Martin Daer's wear instrument, rubbing the fabrics with standard friction under constant pressure. The relative movement of the Li Sharu graphic between the friction fabric and the sample produces all directions. After completing the specified number of frictions, the degree of damage to the sample is evaluated.
Stroll wear -resistant method:
The test principle of Stroll wear resistance method is to be placed on the test sample on the inflatable rubber film with constant air pressure, using a specified surface surface with a specified surface Features of sandpaper rubbing the sample. After the specified number of frictions, the degree of wear of the sample is evaluated by the appearance.
