Welcome to the Qinsun Instruments Co., LTD! Set to the home page | Collect this site
The service hotline

Search


Related Articles

Product Photo

Contact Us

Qinsun Instruments Co., LTD!
Address:NO.258 Banting Road., Jiuting Town, Songjiang District, Shanghai
Tel:021-67801892
Phone:13671843966
E-mail:info@standard-groups.com
Web:http://www.qinsun-lab.com

Your location: Home > Related Articles > Comparison of test methods for Martindale abrasion resistance of fabrics

Comparison of test methods for Martindale abrasion resistance of fabrics

Author:QINSUN Released in:2023-03 Click:119

Due to the actual fabric type, wear and tear may also vary. In the actual use of fabrics, the causes of wear are various, such as friction with operating machines, tables, crops, etc. Also, the wear rate of different fabrics is very different, such as jackets, gloves, stockings, etc. The friction is more serious and the friction effect on underwear and undershirts is lighter. Therefore, in order to obtain wear-resistant test results in accordance with the actual situation, the test conditions must be carefully selected to make them comparable to the actual wearing situation.

The classification of the abrasion resistance test mainly has the following two types:

1. Distinction according to the wearing mode
The wearing mode is different, so the dust abrasion test equipment can be roughly divided into flat grinding, There are three types of grinding and torture.
Flat wear refers to the wear resistance of the style in platte state, which simulates the wear state of the elbow and buttocks of the clothes. At present, the Martindale Abrasion Tester is the most widely used in the industry. Commonly used standards are ASTM D4966, ISO 12947 and GB/T 21196. Bending grinding is testing the wear resistance of the sample under a certain stress in the flow state. It simulates the wear of clothes on knees, elbows. Commonly used standards are ASTM D3855, ASTM D3886. Hemming is the test of the wear resistance of the edge of the folded part of the fabric, which simulates the wear condition of the neckline, sleeves and pants.
It bends the fabric into 180° folds and irons flat, so the part of the strict fold line will rub against the abrasive to cause abrasion.
The experimental conditions of the three experimental instruments are different and the experimental results cannot be replaced by each other.

Second, according to the assessment method
For different fabrics, due to their differences in wear resistance, in order to shorten the testing time and accurately express the wear resistance of fabrics to the most extent, the standards are a different assessment method.
2.1 Changes in appearance performance:
Including the evaluation of sample damage and changes in surface gloss and pilling, it should usually be compared with a standard sample for evaluation. For example, the national standard is divided into the following three parts according to the assessment method:
GB/T 21196.2-2007: Determination of abrasion resistance of textile fabrics by the Martindale method Part 2: Determination of sample breakage
GB/ T 21196.3-2007 Determination of abrasion resistance of textile materials by the Martindale method Part 3: Determination of mass loss Part 4: Evaluation of appearance changes
2.2 Determination of changes in physical properties: After testing the sample according to drag a fixed number of timesand, the changes in physical and mechanical properties such as weight, thickness and breaking strength of the tester are determined to compare the abrasion resistance of fabrics.

The commonly used methods are sample weight reduction rate, sample thickness reduction rate and sample breaking strength change rate:
Sample weight reduction percentage=(G0-G1)/G0X100%
In the formula : G0 is the total weight of the sample before wear (g);
G1 is the total weight of the sample after wear (g)
The amount of thickness reduction of the sample =(T0-T1)/ T0X100%
In the formula: T0 is the total thickness of the sample before wear (mm);
T1 is the total thickness of the sample after wear (mm)
3) The rate of change of the breaking strength of the sample=( P0-P1)/P0X100%
In the formula: P0 is the breaking strength of the sample before wear (N or kg);
P1 is the breaking strength of the sample before wearing (N or kg)

Prev:

Next: