Test for Coating Shrinkage

Teacher Notes


Shrinkage is a concern to paint and dental adhesive manufacturers among others. Coatings should adhere to the applied substrate uniformly. This test determines the shrinkage among various coatings and serves as a comparison of different substrates on which the coatings are applied.

Applicable science concepts:

Scientific measurement. Scientific method.



Manufacturer's instructions should be followed and eye, hand , and body protection is required.



Results of individual class groups can be arranged and statistical analysis performed. Our test results showed none to over 2 mm shrinkage among the various paints, epoxies, and waxes tested.


The results of this test should be correlated with other tests to determine the optimum coating for a given application. Also the physical and chemical parameters should be explored and correlated with each other for a given application.


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