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Your location: Home > Related Articles > Analysis of various abrasion tests for textile products معدات اختبار

Analysis of various abrasion tests for textile products معدات اختبار

Author:QINSUN Released in:2022-12 Click:108

Product introduction

Abrasion refers to the phenomenon that the surfaces of two objects come into contact and are rubbed to cause the surface material of the object to fall off. The wear process is very complex and includes different types of wear such as fatigue wear, curl wear, abrasive wear and even abrasion wear. A material\'s wear resistance generally refers to a material\'s ability to resist wear during a specific frictional condition. Different types of wear have yielded corresponding wear test methods, such as Akron wear based primarily on curl wear, DIN wear and NBS wear based primarily on wear, and Taber wear based primarily on fatigue wear. Next, Shanghai Qianshi brings you the analysis of various wear tests of textileslproducts.

The results of wear experiments are generally expressed in terms of wear intensity, that is, the amount of wear per unit time or unit distance, and the amount of wear can be expressed by volume wear or mass wear. Volume wear such as Akron wear and DIN wear; mass wear such as Taber wear; in addition, the results of wear experiments can also be expressed by wear index, that is, the ratio of the wear of the test sample to the wear of the specified standard sample under the same conditions, such as NBS wear.

DIN wear

DIN wear is based on GB/T9867-2008- standard, with rotary cutting Cut out a cylindrical sample with a diameter of (16 ± 0.2) mm and a height of (6 ~ 10) mm, put the sample with a weighted mass of m1 in the holder, and put the sample holder with the sample slide the deviceat to the starting point of the roll, and put it on the emery cloth with a specific type, start the machine for the test, and the test ends when the wear stroke reaches 40m. Remove the sample from the holder, brush off the fluff and weigh the sample mass m2. DIN wear volume V= (m1-m2)/ρ.

Taber Abrasion

Taber Abrasion has been tested according to the ASTMD3884-2009 method, using a cutting machine Cut a circular sample with a diameter of 100mm and a central hole of 6.5mm, and the thickness of the sample is 3mm. Place it in the Taber abrasive testing machine to tighten and clamp a suitable type of abrasive wheel and apply a specified load. Set the sample rotation speed to 60r/min. When the sample rotates, it drives the abrasive wheel to abrade the sample and records the end point of the sample. . Record the weight m1 (mg) of the sample before the test, record the massm2 (mg) of the sample after the test and the Taber abrasion value is m1-m2.

Akron Wear

According to GB/T1689-1998 standard, Akron wear is cut out with a length of 23.5mm and a width of 12.7mm and fixed on the rubber tire machine, (23±2)℃ Adjust for 3 hours. Rotate the sample clockwise, pre-mill for 20 minutes, remove, brush off fluff and weigh m1. Use the pre-ground sample to test and weigh m2 after 1.61 km of driving. ρ is the density of the sample. Akron wear V=(m1-m2)/ρ.

NBS Abrasion

NBS Abrasion is tested per ASTMD1630-2006, cut with a 25mm square A test piece with a thickness of 6 mm was cut with a knife. Take the standard rubber test piece of Shao A65, fix it in the test piece seat on the power arm of NBS sander with double-sided tape, lower the power arm, and make sure that the standard rubber test piecek contacts the 40 # special abrasion resistant sandpaper on the roll of the NBS sander. Press the "Test" button to start the pre-grinding and stop the pre-grinding until the arc of the wear of the standard rubber test piece matches the curvature of the sandpaper. Adjust the striker and record the thickness shown on the gauge panel of the test thickness gauge. Reset the NBS sander count to zero, press "test" until the wear thickness reaches 2.5mm, record the test rotation number R1; remove the standard rubber test piece and replace it with a test sample piece, repeat the test steps and record the test rotation number R; Replace the test piece with the previous standard rubber test piece and record the test rotation number R2. The abrasion resistance index of NBS is 2R/(R1+R2)×100.