The device places the test plate in parallel in the wind tunnel, the wind speed control accuracy is 3 +/- 0.3m/s, the drying time is automatically controlled, and the surface crazing can be visually inspected, which is suitable for the evaluation of coating anti-crack performance.
The device provides 3 +/- 0.3m/s wind speed through axial flow fan in wind tunnel, Timer delay range of 0.01 seconds to 99 hours 99 minutes, can automatically control drying time and eye test plate surface crazing, support parallel test.
The wind speed is controlled in the range of 3 +/- 0.3m/s, equipped with axial flow fan and automatic timing function, which can simulate the drying process under specified conditions and effectively detect the surface crazing of the material.
Adopting axial flow fan to supply air, the wind speed can be adjusted steplessly, the wind speed in the wind tunnel is 3 +/- 0.3m/s, and it is equipped with Handheld AnemoMeter measurement, which is suitable for coating drying anti-crack performance testing.
Using axial flow fan and test wind tunnel structure, the wind speed can be adjusted in the range of 3 +/- 0.3m/s, equipped with Timer delay range of 0.01 seconds to 99 hours and 99 minutes, automatic detection of material surface crazing.
The axial flow fan is used to supply air and support stepless speed regulation of 0~ 3m/s, and the anemoMeter has a range of 0~ 10m/s, which is suitable for the determination of the initial drying anti-cracking performance of laminated architectural coatings.
The drying process of paint film and putty film can be accurately measured by using circular track needle design, equipped with four different radius needle (R0.25/0.5/1.0/1 mm), and the track period is 24h/r.
Measure the surface of paint film and putty film and the actual drying time, in line with GB/T1728 standard, the weight of the Tester is 200g, and the weight of the bottom area is 1cm ².
Adopting stepless speed regulation technology, the friction speed range is 0~ 135cpm, the test Travel 155mm, the number of times can be set and automatically counted to evaluate the sanding performance of undercoated putty.
Adopting the test principle of inclined rolling ball method, the tilt angle adjustment range is 0~ 40 °, equipped with 32 GCr15 bearing steel balls, and the shape tolerance accuracy exceeds GB/T308 level 40 to achieve accurate initial Tack evaluation.
Friction speed 0~ 135cpm, Test Travel 155mm, round-trip count 0~ 9999, suitable for accurate determination of sanding performance of undercoat and putty.
The equipment tests the initial Tack by short contact between steel ball and adhesive tape sample at a small pressure, adjustable tilt angle 0~ 60 °, rolling ball range 1/32 inch to 1 inch, suitable for a variety of material adhesion evaluation.
The motor-driven edge rises at a rate of 3mm/min to generate and control crazing expansion, which can detect the crazing ability of putty against substrates, with a maximum lift of 20mm, suitable for standard frame 200 × 150mm test plates.
The equipment uses 200 +/- 0.2g weight, sample size 50 * 120 * (0.2~ 0.3) mm, can accurately determine the surface and actual drying time, in line with national standards.
The equipment can detect the crazing or peeling of the putty film after bending, equipped with R25 and R50 support film specifications, shaft Rod size is 50mm and 100mm in diaMeter, suitable for 0.2-0. 3mm thick tinplate plate.
