BEPU 6601 30mins fast cured polyurethane material

Used forwas specifically formulated for automotive sensors, switches, and other electrical devises requiring environments protection.

Process with dispenser

preparations

material preparation

Strilling in the original drum, then pouring into dispenser.

To avoid bubbles inside of finished products, both tank should be usually kept 40 to 60 minutes under the vacuum pressure 0-2mmHg.

Max tolerance

Mixing proportion of deviation may affect mechanical properties, tolerance should be less than 1%.

other

Through the production, should always maintain the tank airtight . the compressed gas should be dry If need, otherwise part B will become sticky, and influence the mechanical properties.

Process with Manual

Pretreatment of the surfaces to be casted

The substrates should be dry, free of dust, oil, grease and other contaminants. The usage of wash primer can increase the adhesion to metals. Release agents must be cleaned off the surfaces of plastic sheets.

Improved adherence is attained if the surface is roughened prior to application..

Mixing and Processing

The components can be mixed manually either by using mixing equipment or by using machinery with a two-component application. Application is possible by stopping, rolling, casting, spraying or squirting. The casting resin is only applicable within a limited time (potlife). Afterwards the mixture becomes gelled and useless. Therefore only the amount which can be applied within the potlife should be mixed. The potlife depends on the quantity and temperature of the mixed batch. By larger quantities or an increased temperature, the potlife decreases. Lower temperature, on the contrary, lengthen the potlife.

BEPU 6601A/B can be cured at room temperature (above 15°C) or at elevated temperature (up to 60°C). The curing time will be substantially with increasing temperature.

Cleaning

Fresh, uncured material (Cleaning of application equipment, spills on substrate etc.) can be removed with the cleaner Acetone or Xylene; cured casting resin can be removed only mechanically.

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