Overview
The architectural coatings stain resistance tester JTX-III is a PUSHEN brand equipment designed to evaluate the stain resistance performance of architectural interior-wall coatings. The instrument uses the stain removal rate evaluation method, loads the stain on the test plate by dipping or scraping method, tests under specified loads and times, and evaluates the stain resistance of coatings by the change of reflection coefficient.
Features
1. Use stain removal rate evaluation method to scientifically evaluate coating performance
2. Support dipping method or scraping method stain loading method
3. Flow rate of scruf fluid can be precisely controlled and sent to the brush by pump
4. With the function of opening and shutting down the pump during the scruf process
5. Equipped with a 5-bit counter to accurately record the number of tests
6.Scruf speed 37cpm, Travel 300mm, load 1000g, stable and reliable parameters
Principle
The instrument uses stains as the source of pollution, and loads them on the coating test plate by dipping or scraping. The stain resistance test is carried out under the specified load and scruf times, and the stain resistance performance of architectural coatings coatings is scientifically evaluated by measuring the change of the reflection coefficient of the test plate before and after the experiment.
Standards
GB/T 9755、GB/T 9266、ASTM D48208
Steps
1. Prepare the coating plate and load the stain
2. Set instrument parameters including load and scruf times
3. Start the instrument for stain resistance test
4. Test plate reflection coefficient before and after measurement experiment
5. Calculate stain removal rate and evaluate stain resistance performance
Notice
• Power supply voltage 220V AC 50HZ before operation
• Use proper scruf fluid and adjust Flow rate correctly
• Regularly check the operating status of the instrument and the accuracy of the counter
• Keep the instrument clean to avoid stain residue affecting the test results
• Test board preparation and parameter setting according to standard requirements
