Energy savings plus mechanical reinforcement and rheology control

Waterborne Polyvinyl Acetate Wallboard Adhesive

Adhesives Formulation

Applicable Type

Waterborne Adhesives

Applicable Base Polymer

Polyvinyl Acetate Emulsions & Derivatives (PVAc)

Applicable Industrial Sectors

Buildings & constructions , General caulking & sealing , Wallcoverings

Applicable Base Polymer Properties

Waterborne polyvinyl acetate adhesives have the same base latex resin that is used in wood glues. These adhesives provide a low to medium performance, inexpensive adhesive that dries to a relatively rigid material. A typical formulation consists of polyvinyl acetate latex, filler, plasticizer (for improved flexibility), and water. Since these adhesives set by evaporation, they shrink on drying more than 100% solids adhesives.

Typical Formulation Ingredients

Ingredient

Parts by weight

Polyvinyl acetate emulsion

xxxxx

Thickener (modified cellulose)

xxx

Defoamer

xxxx

Plasticizer (dipropylene glycol dibenzoate)

xxxxx

Surfactant (alkylphenol-ethylene oxide)

xxxx

Dispersing agent (aromatic sulfonic acid, sodium salt)

xxxx

Dispersing agent (inorganic polyphosphate)

xxxx

Stabilizer (ethylene glycol)

xxxx

Preservative

xxxx

Typical Properties

Properties

Solids content, %

xxxxx

Density, lbs/gal

xxxx

Viscosity at 25°C, cps

xxxxxxxxxxxxx

Open time, mins

xxxx

Processing

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Resulting Properties

Once the base emulsion polymer is obtained, it is then mixed with all other liquid ingredients and additives except for the fillers. When this blend is complete, add the filler slowly, blending well between all additions. Generally, high shear mixers are sufficient to produce a heavily bodied sealant.

Tips and Tricks

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