Application
The VIP128 Rub Tester is a precision instrument designed to evaluate the abrasion resistance of printed ink, PS photosensitive coatings, and other product surface coatings. It is widely used to analyze print durability, ink adhesion, coating hardness, and surface resistance to wear. This device supports dry grinding tests, wet grinding tests, decolorization tests, paper fuzzing tests, and specialized rubbing tests.
Compliance Standards
- GB 7706: Printing Ink Abrasion Testing Standard
- JIS K5701: Japanese Industrial Standard for Coating Durability
- ISO 9000: International Standards for Quality Management and Assurance
Product Applications
- Evaluation of printed ink abrasion resistance
- Analysis of ink adhesion and peeling behavior
- Coating hardness and durability testing
- Dry and wet surface grinding assessments
- Paper surface fuzzing and decolorization tests
Testing Method
Using a high-speed impeller rotor, the sample is kept in a free state and subjected to continuous high-speed impact along the annular track of a cylindrical chamber. Throughout this process, the sample experiences repeated bending, friction, vibration, and tensile forces, leading to wear. The degree of wear is then evaluated by measuring the weight loss or reduction in fracture strength of the sample before and after testing. This method is widely used for assessing the wear resistance of textiles and other flexible materials.
Test Procedure Sample Preparation: Cut the specimen according to standard requirements. If testing fracture strength, divide the sample into two halves—one for measuring initial strength and the other for post-wear strength.
Tachometer Adjustment: Select and install the appropriate rotor, then adjust the speed dial to calibrate the tachometer for accurate speed measurement.
Weight Loss Method
- Weigh and record the sample’s weight before testing.
- Place the sample inside the accelerotor chamber.
- Close the chamber door, set the speed and time, and start the machine.
- After the test, remove the sample and clean off any deposits.
- Weigh the sample again and calculate the weight loss rate to 0.01% accuracy.
Strength Loss Method
- Humidify the sample.
- Measure the sample’s initial fracture strength.
- Conduct the wear test, then measure the sample’s fracture strength after wear.
- Calculate the strength loss percentage.
The accuracy of test results can be influenced by factors like duration, rotor size, shape, and speed. Testing should be stopped if the sample becomes curled or unable to move freely in the chamber.
