Overview
The TQC levelling sag model VF2246 is a dual-function stainless steel film applicator for leveling and sag testing from post-construction to drying. Spreader 5 different film thicknesses on one side for leveling, and 10 film thicknesses (75-300 microns per 10 microns) on the other side for sag testing. Level measurement is evaluated by combining stripes.
Features
1. Dual function design, can test leveling and sagging at the same time
2. levelling test surface provides 5 kinds of film thickness selection
3. SAG test surface provides 10 film thickness options, ranging from 75-300 microns
4. Made of stainless steel, resistant to acid and alkali and chemical elements
5. Complies with international standards ASTM D4400 and ASTM D2801
6. Compact and lightweight, size 15x28x100mm, weight only 72g
Principle
Levelling sag evaluates performance by Spreader Coating film layers of different thicknesses. Leveling test top coat cloth 5 kinds of film thickness, observe the surface Smoothness after drying, avoid defects such as orange peel and brush marks; sag test top coat cloth 10 kinds of increasing film thickness, determine the critical thickness that does not sag on the vertical plane. Coating leveling and sag resistance are accurately judged by comparing the fringe shape.
Applications
Coatings, paints performance testing, quality control, laboratory research
Standards
ASTM D4400、ASTM D2801
Steps
1. Preparation of Coating Samples and Test Substrates
2. Use levelling to test 5 different film thicknesses of top coating cloth
3. Use sag to test the top coating cloth 10 increasing film thickness (75-300 microns)
4. Coating drying
5. Observe and compare the film surface morphology
6. Record leveling and sagging test results
Notice
• Make sure the instrument is clean and drying before use
• Spreader with even force
• Avoid Testing in Humidity environments
• Clean the instrument in time after the test
• Coating performance test only, not for Miscellaneous materials
