Product Description
BGD 425 Minimum film forming temperature (MFFT) tester MFFT Testing Machine ISO 2115 ASTM D2354
1.Description
1. Emulsions and coatings for coatings and polymer dispersions for plastics are important components of polymer materials such as coatings and adhesives, and their film-forming properties directly affect the drying performance of the final product, so it is very necessary to know the minimum film-forming temperature.
2. The emulsion or dispersion material is evenly dispersed in the liquid medium (usually water) to form a dispersed system, in the drying process, due to the evaporation of the liquid can promote the interaction between the particles, so as to closely combine. If the temperature is not high enough for the polymer particles to polymerize, they will no longer stick together, resulting in intermittent opaque white lumps. If the temperature conditions are sufficient for the polymer particles to polymerize, then the particles coalesce and a continuous and uniform transparent film can be formed.
3. White point temperature: the boundary temperature when the opaque film is transformed into a transparent film.
4. Minimum film forming temperature: the minimum temperature for the formation of continuous and uniform transparent films without cracks (white point temperature is generally lower than the minimum film forming temperature of several degrees).
5.BGD 452 intelligent minimum film forming temperature tester is a latest instrument developed by standard company. Its main structure is a metal gradient plate, and the two ends of the gradient plate are respectively equipped with cooling source and heating source. Through the principle of metal heat conduction, different temperature gradients are generated on the metal plate. A wet film of emulsion or polymer dispersion with continuous and uniform thickness is coated on the temperature gradient plate, and the sample is dried by dry air flow. At the same time, the sample is evaporated by the temperature on the gradient plate to form a film. Because the temperature on the gradient plate is different, the position of the sample film formation is also different. Find the junction point between the continuous transparent film and the white opaque (unpolymerized) film. The corresponding temperature on the gradient plate can be obtained from the screen display, and the temperature is the MFT temperature of the sample.
6. The instrument conforms to GB/T 9267, ISO 2115 and ASTM D2354 standards; It is simple, direct and accurate to determine the minimum film forming temperature of polymer emulsion.
Product Parameters
BGD 425 Minimum film forming temperature (MFFT) tester MFFT Testing Machine ISO 2115 ASTM D2354
2. Main Technical Parameters
1.High-tech products, domestic initiative, integration of a number of patents with independent property rights;
Small size, high precision, intelligent operation, simple and convenient
2. Color touch screen + menu operating system, real-time display of multiple parameters, simple and convenient operation
3. precision digital temperature sensor, ensure the temperature error is less than ±1ºC
4. Independent cooling water circulation system is standard
5. Optional dry air generator, can produce low dew point dry air, can make the sample completely dry and the test results are not affected by the environmental humidity
6. Movable ruler (with light) to facilitate the experimenter to read the temperature at any point on the gradient plate: the operator can move the ruler arbitrarily, the instrument automatically identifies the current position of the ruler and displays the real-time temperature at the position on the LCD screen
7. Automatic monitoring of cooling circulating water temperature and flow, if there is an abnormal situation, the alarm and automatic shutdown
8. The worktable (gradient plate) is treated with special copper surface technology, fast heat conduction and strong stability
9. The system automatically reminds the test process
10 .Seven test conditions are optional, convenient to test samples with different film forming temperatures
11. Gradient plate evenly distributed 16 high precision temperature sensors
12. Standard special preparation device (gap depth of 100μm/170μm), the sample can be coated into a continuous uniform wet film with thickness of 100μm and width of 22mm.
| Temperature test range |
-10ºC ~ 90ºC (ordinary tap water as cooling water source) |
| Gradient interval |
20mm |
| Gradient plate detection point |
16 points |
| Size of gradient plate |
447mm×210mm |
| Number of coatable samples |
6 (width 22mm) |
| Dimensions (L×W×H) |
600mm×450mm×300mm |
| Cooling circulating water system |
560mm×240mm×200mm |
| Dry air generator |
555mm×255mm×525mm |
| Net weight of main engine |
26KG |
| Power |
750W |
Detailed Photos
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