This standard specifies the method of using Martindale tester to determine the pilling degree of fabric under slight pressure. This standard is applicable to most fabrics, especially wool woven fabrics. GB/T 4802.2-1997 Textile fabric pilling test Martindale method GB/T4802.2-1997 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T 4802.2--1997
Textiles
Fabric Pilling Testbzxz.net
Martindale Method
Textiles-Assessing the rate of piling offabricsMartindale 1997-06-09 Issued
National Technical Supervision Bureau
1997-12-01 Implementation
GR/T4802.2—1997
This standard is equivalent to the international single-hair fan test method TM196:19804, which is a test method for evaluating the pilling weldability of fabrics. It is a revision of GB4802.2-94, a test method for fabric pilling, which is based on the MErndale method. This standard has made important technical changes to the original standard and made major revisions to the chapter arrangement. This standard will replace GB4502.2-84 from the date of its entry into force. This standard was issued by the China Pharmaceutical Association's Institute of Standardization. This standard was established by the Shanghai Textile Research Institute.
1 Scope
National Standard of the People's Republic of China
Textiles
Test for pilling of fabrics
Martindale method
Textiles-Assessing the rate of pilling of fabrics under slight pressure using Martindale method
GB/T4802.2—1997
GB48n2.254
This standard specifies the Martindale method for determining the rate of pilling of fabrics under slight pressure. This standard is suitable for most fabrics and is more suitable for woolen fabrics. 2 Referenced Standards
The provisions contained in the following standards are incorporated into or are the provisions of this standard through reference in this standard. The versions shown are valid when this standard is published. All standards are subject to revision. Parties using this standard should consider the possibility of using the following standard versions. G33529-85 Standard atmosphere for the test of fine fabrics 3 Principle
The sample mounted on the grinding head is rubbed against the fabric on the grinding head for a certain number of times under a specified pressure. The relative motion between the test sample and the abrasive particles is a Lissajous figure
Under the specified conditions, the abraded sample is compared with the standard sample and the pilling grade is evaluated. 4 Equipment and supplies
4.1 Mardell type wear tester, the sample is mounted in the test chuck and the fabric mounted on the stand can rotate freely during the friction. The relative motion trajectory between the sample head and the surface is a Lissaud figure, and the relative motion speed is (5 ± 2) r/min. The instrument has an automatic stop switch. When the predetermined motion number is reached, the test is automatically stopped. 4.2 Woven felt: 578~6788/m, thickness of about 1.8mm, the wool can be used continuously until it is broken or needs to be renewed. 4.3 Sample gasket: Nitrogen ester foam plastic, relative density 0. C4g/cn, thickness of about 3mm, shearing and the same size as the sample, a new gasket is replaced every time a test is done.
4.4 The diameter of the circular sample is 40 Ⅱm, or a template, pen, or knife is used to test the sample. 4.5 Standard sample limit,
4.6 Evaluation box
5 Standard atmosphere
5.1 The standard atmosphere is used for the test, and the standard atmosphere specified in GB6329 is pre-adjusted, humidified and tested. The test shall be conducted with the first-class standard.
5.2 The samples to be tested shall be adjusted down to the standard of 24 above. Approved by the State Technical Supervision Commission on June 9, 1997
1997-12-01
6 Test samples
GB/T4802.21957
6.1 Randomly sample the woven fabric samples, but not within 10m of the sample. The sample shall not have any spots on the frame. If it is a fancy fabric, the sample shall include all different fabrics and wrappings of the fabric. 5.2. If four samples are not enough, there are different groups of paper and color, and the number of test pieces shall be increased. Cut the same sample: one group is four samples with a diameter of 40mm and the other group is four samples with a diameter of 140mm. If the sample is not enough to take all the different oxygen and color selections, the number of test pieces should be increased. Test steps 1. The sample is installed on the instrument head, and the test surface of the sample is clear. When the fabric to be tested is not more than 500g/m, a foamed plastic should be used between the test and sample clamps. When the fabric is more than 500/m" or is a composite fabric, no foam pad is needed. Each sample is subjected to the same tension.
7.2 Place the abrasive grains on the grinding table, put the weight on the abrasive 1 and then put the pressure ring. Stable, so that the three rings fix the abrasive on the platform, and the material on the platform should be subjected to the same tension. 7.3 Place the grinding head on the clean material and align it. The mandrel passes through the panel bearing and rests on the grinding head. At this time, the force pressing on the abrasive is 196cN. 7.4 The preset internal counter is 1000. Start the instrument, rotate it for 1000 times, and the instrument stops. 7.5 Remove the test sample and compare it with the standard sample in the level box. Evaluate the pilling degree of each test item and express it as 1/3 of the general level. Representation of test results
The pilling level of the sample is expressed as the average value (level) of the four selected samples. Calculate the average value, round it to two decimal places, and if the decimal part is less than or equal to 0.25, move to the next level (2.25 is level 27. If it is greater than or equal to 0.75, move to the next level (such as 2.85 is level 3). If it is greater than 0.25 and less than 6, move to 0.5
9 Report
a) Name and specification of the sample:
1) Test period:
(2) Test conditions:
d) Pilling level
e) Any details of deviation from the standard and abnormal phenomena in the test should be explained.2
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