Energy savings plus mechanical reinforcement and rheology control

Solvent-borne Gasoline Resistant Polysulfide Adhesive

Adhesives Formulation

Applicable Type

Solvent borne Adhesives

Applicable Base Polymer

Polysulfides

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Polysulfide polymers are normally associated with sealants for construction, marine, insulating glass, automotive, and aircraft industries. It is the high concentration of sulfur linkages that provides these products with their unique chemical properties. Polysulfide elastomers exhibit excellent chemical resistance, electrical characteristics, and dimensional stability.

Typical Formulation Ingredients

Ingredient

Parts by weight

Polysulfide resin (Thiokol FA, Thiokol)

xxxx

Benzothiazyl disulfide

Diphenylguanidine

Zinc oxide

xxx

Sulfur

Tackifier (Vinsol resin, Pinova)

xxx

Ethylene dichloride solvent

xxxx

(Source: Flick, E.W., Adhesive and Sealant Compound Formulations, Noyes Publications, 1984, p. 93)

Typical Properties

Properties

Stripping strength, aluminum to canvas, lb/in:

• Without gasoline soaking

• After 24 hrs gasoline soaking

Processing

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Resulting Properties

The adhesive shown above is a solvent borne adhesive that can be applied to porous substrates. It is specially formulated to have good gasoline resistance and lowered raw material cost. Polysulfide adhesives and sealants have been successful in applications requiring good moisture, solvent and ozone resistance, and good weathering and low temperature properties. However, the chemical linkages that provide these properties also contribute to poor high temperature stability and high compression set because of stress relaxation.

Tips and Tricks

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