MFFT 90 Minimum Film Forming Temperature Instrument

Description

Ensure your paints and coatings perform correctly.

An accurate MFFT value allows the formulation of products that cure correctly under specified application conditions.

The Rhopoint Minimum Film Forming Temperature Bar (MFFT) is used to determine the minimum film forming temperature and white point in paint and coatings such as water based coatings, polymer dispersions, synthetic latexes and emulsion.

The MFFT also tests adhesives temperature optimisation in such areas as coalescence of water-borne adhesives and minimum temperature for epoxy resin cure.

• Determines the MFFT (minimum film forming temperature) of latex, emulsions and adhesives
• Easy to use touch screen programme control
• Nickel plated copper platen with an electronically imposed temperature gradient
• Optional results printer for printing date and time stamped MFFT results
• -10˚C to 90˚C operation

Standard model (MFFT-90) has ten temperature programs

Find out more about MFFT in our article ‘What is MFFT?’

The MFFT Method

A dull, nickel-plated copper platen is cooled at one end electronically and warmed at the other end, while air or nitrogen is caused to flow over the surface as a uniform blanket. The air flow is from cold end to hot end.

To achieve the required uniformity, the air or gas is delivered via a very carefully designed sintered metal distribution block. The design is such that freezing does not take place at the inlet. For use with air, a drying system is incorporated into the housing together with a flow controller. The air dryer contains indicator crystals which are clearly visible in their transparent container. The complete air conditioning system is accessible at the side of the instrument.

Water at normal mains pressure removes the excess heat from the coolers. In environments where the ambient water temperature is high, Rhopoint offer a chiller / recirculating unit to reduce this temperature. Quick release couplings are provided. Water is normally drawn from a laboratory tap and the outlet is run to drain by gravity. Alarms, both audible and visible, protect the cooling water supply.

Temperature sensors are mounted at intervals under the surface of the platen, these are used to control the temperature of the platen in accordance with the chosen program. They are also used to indicate platen temperatures down the length of the bar. A hinged viewing cover over the platen provides thermal insulation while allowing visual inspection of the determination as it progresses.

The use of this instrument may involve hazardous materials and operational procedures. It is the responsibility of the user of this instrument to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.