Overview
The GKL-II drying anti-cracking tester is a professional testing instrument under the PUSHEN brand, which is mainly used to determine the initial drying anti-cracking performance of laminated architectural coatings. The instrument is composed of a fan, a wind tunnel and a bracket. The cross section of the wind tunnel is square, which meets the relevant test requirements of GB/T 9779 "Laminated architectural coatings" standard for initial drying anti-cracking.
Features
1. Dedicated to the determination of the initial drying anti-cracking performance of laminated architectural coatings.
2. Meet the relevant requirements of GB/T 9779 composite architectural coatings standards.
3. The instrument structure is composed of a fan, a wind tunnel, and a bracket. The cross-section of the wind tunnel is square, and the design is professional.
4. By using an axial flow fan for air supply, a wind speed of more than 3m/s can be achieved, and a pressure regulator is configured to precisely adjust the wind speed.
5. Configure Handheld Anemometer for accurate measurement of wind speed.
6, Fan Power is 100W, wind speed adjustment range 0-3m/s.
Principle
The instrument generates air flow through the axial flow fan, and the air flow passes through the square wind tunnel of a specific section to form a controlled wind speed environment. During the test, the prepared sample is placed in front of the wind tunnel, and the fan is adjusted by the voltage regulator to make the wind speed reach and stabilize within the standard range (such as 3m/s). Simulate the wind conditions endured by the paint in the early stages of drying, so as to evaluate its anti-cracking performance.
Applications
Initial drying cracking performance of laminated architectural coatings
Steps
1. Prepare samples of laminated architectural coatings that meet the standards.
2. Place the specimen in the designated position in front of the wind tunnel of the tester.
3. Turn on the fan power supply and adjust the wind speed through the voltage regulator.
4. Use Handheld Anemometer measurement and confirm that the wind speed meets the standard requirements (such as 3m/s).
5. Allow the sample to operate at a specified wind speed for a certain period of time.
6. Observe and record whether the surface of the sample is crazing, and evaluate its initial drying anti-cracking performance.
7. After the test is completed, turn off the fan power.
Notice
Before use, make sure that the instrument is well grounded and check whether the components are firmly connected.
• Adjust the wind speed slowly and use Anemometer real-time monitoring to ensure accurate and stable wind speed.
• The instrument should be placed in a smooth and well-ventilated environment.
• Do not put foreign objects into the wind tunnel or near the fan into the trend when the fan is running.
• After the test, the surface of the instrument and the air duct should be cleaned in time.
• Non-professionals should not disassemble the instrument.
• When not in use for a long time, the power should be cut off and kept properly.
