Energy savings plus mechanical reinforcement and rheology control

Waterborne Epoxy Binder for Trowelable Floor Toppings by Hexion

Adhesives Formulation | Supplied by Hexion

Applicable Type

Waterborne Adhesives , Reactive Adhesives , Epoxy Adhesives

Applicable Base Polymer

Epoxidized

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Waterborne epoxy dispersions have been employed effectively for many years in the coatings market primarily for the surface protection of concrete and metals. These products were developed in response to environmental regulations to reduce solvent levels in coatings. Since these dispersions adhere well to a wide variety of substrates and provide a high degree of strength and resistance to service environments, they have also naturally found applications as adhesives.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

A (Epoxy Component)

Epoxy resin (Epi-rez™ WD-510, Hexion)

xxx

B (Curing Agent Component)

Epoxy hardener (EPIKURE™ Curing Agent 3277, Hexion)

C (Aggregate Component)

Colorquartz 907 White, Grade 11 (3M Company)

C (Aggregate Component)

Colorquartz 402 Brown, Grade 28 (3M Company)

xxx

C (Aggregate Component)

Colorquartz 402 Brown, Grade 11 (3M Company)

xxx

Typical Properties

Properties

Viscosity of binder at 25°C and 20 rpm, cps

xxx

Expected pot life at 25°C, hrs: (1 pint of binder)

xxxx

Expected pot life at 25°C, hrs: (1 gallon of aggregate filled mix)

xxx

Heat deflection temperature, °C

Tensile strength, psi

xxxx

Elongation at break, %

xxx

Hardness

Processing

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Resulting Properties

Waterborne epoxy adhesives can be produced with epoxy emulsions and polyamide-amine curing agents. A typical starting formulation is shown for a self-leveling compound for concrete floors. This formulation can be used as either a coating or an adhesive. In either application, once the mixed emulsion is applied to the substrate the water must be evaporated. In the case of the adhesive application, this must be completed before non-porous substrates are mated. With the particular formulation presented above, the pot life is several hours at room temperature.

Source: Hexion

Tips and Tricks

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