The minimum film-forming temperature tester produced by TRUIT is designed in line with GB/T 9267 standard, it is a new generation of paint film tester, which has many advantages of traditional testing instruments at home and abroad, and integrates the advantages of desktop, energy-saving, ultra-wide workbench, accurate temperature measurement, etc., and has become a leader in similar instruments.
When polymer emulsion is used as a treatment agent for coatings, adhesives, chemical fiber fabrics, leather, paper and other surfaces, its film-forming property is one of the important technical indicators. In order to create new products with lower film-forming temperatures, researchers are constantly improving their technical specifications and formulations. Therefore, the detection of the minimum film formation temperature (MFT) is an important indicator for this type of coating, and it is an ideal instrument to easily measure the MFT, that is, the minimum film formation temperature tester.
Order Information：
TR 3680--Minimum Film-Forming Temperature（MFFT）Tester
1. Working principle
A metal sheet with a suitable thermal conductivity is installed at both ends with a cold and heat source that can set the temperature arbitrarily. After a certain period of refrigeration and heating, the metal plate is in a stable state, forming a gradient temperature on its surface. The emulsion to be tested is coated in the groove on the surface of the board, and under the action of different temperatures, the water of the emulsion evaporates, forming a clear dividing line on a certain temperature line. The high-temperature side of the demarcation line is transparent, and the low-temperature side of the demarcation line is cracked or chalky, and this demarcation line is the minimum temperature of film formation.
2. Instrument structure
The stainless steel temperature gradient plate is the heart of the machine, and the main components around it are the temperature control system (intelligent temperature regulator, high-precision temperature sensor, switching regulated power supply, semiconductor refrigeration device), inspection system, drying device and corresponding electrical control circuit.
·The working temperature range of the gradient plate can be adjusted arbitrarily between -7°C~70°C
·Gradient plate detection points: 13
·Gradient interval: 20mm
·Test paint tank: 6 strips, length 240mm, width 22mm (national standard 20~25mm), depth 0.25mm (national standard 0.20~0.30mm)
·The inspection table displays: 16 o'clock, of which 1~13 o'clock is the working gradient temperature, 14 o'clock is the ambient temperature of the instrument, and 15 and 16 o'clock are the temperature of the inlet and outlet of the cooling water
