Variation in the Proportion of the a and B Components of Honeymoon Adhesive Systems Used for Exterior Grade Finger Joints

摘要

In the 'Honeymoon' adhesive systems the A component contains hardener so that an excess of A over B component, or lack of the B component results in slow curing but to a satisfactory strength. The B component does not contain hardener and therefore an excess of B component over A component results in very little or no curing. For this reason a wattle tannin based and a phenolic fast setting 'Honeymoon' adhesive system were tested to determine the maximum variation in proportion of B to A component at which the cured strength of the adhesive would be unaffected. The wattle tannin based adhesive system can be safely used at a 3:1 variation in proportion of B to A component. The phenolic adhesive system can be used at as much as a 5:1 variation in the proportion of B to A component.