Paints and Coatings
The minimum film-forming temperature (MFFT) of a paint or coating is the lowest temperature at which it will uniformly coalesce when laid on a substrate as a thin film.
The standard test for determining this temperature involves using a MFFT-BAR, as specified by such standards as ASTM D 2354 and ISO 2115.
The design of the Rhopoint instrument is based directly on these standards.
Adhesives
The MFFT of one-pack adhesives can be found in a similar way to paints and coatings. With two-pack adhesives, a strip of aluminium foil can be laid on the platen, to ease cleaning, before applying the adhesive. Two-pack adhesives do not show an MFFT, but the minimum cure temperature can be found by scraping the sample with a spatula
Features
- Determines the MFFT 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
Technical Specification:
- Dimensions: 550 × 610 × 350mm (L × W × H)
- Platen dimensions: 483 × 235mm (L × W)
- Weight: 38kg
- Power: Mains 110–120V AC or220–240V AC
- Air: 4 l min-1 @ 100 psig
- Water: Mains pressure; gravity drain
- Inlet temperature: Under 20°C
The Rhopoint MFFT is the industry leading instrument for measuring the minimum film forming temperature of water based materials. Definition - “MFFT is the lowest temperature at which a latex, emulsion or adhesive will uniformly coalesce when laid on a substrate as a thin film.” An accurate MFFT value allows the formulation of products that cure correctly under specified application conditions.
The Rhopoint MFFT works by holding a very accurate temperature gradient across a nickel plated copper platen. A flow of dried air across the platen stops condensation forming and gives repeatable test conditions.
- Determines the MFFT of latex, emulsions and adhesives
- MFFT90 measures between -5º and 90ºC
- Designed to conform to ISO 2115 and ASTM 2354
