SEDL / STP / STP1200-EB / STP14876S

Use of the Constrained Blister Test to Study Sealant Adhesion

Klosowski, JM
research scientistassociate project chemist at the Dow Corning Corporation, Auburn, MI

Dent, SJ
research scientistassociate project chemist at the Dow Corning Corporation, Auburn, MI

Pages: 12    Published: Jan 1992

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Abstract

An attempt was made to modify the constrained blister test as designed and reported by Dr. David A. Dillard of Virginia Polytech. (VPI) and independently by Dr. A. (Sam) Moet of Case-Western Reserve Univ. to apply to sealants. The test device is detailed and modifications of the device to make it applicable to mullions and samples collected from the field are explained. Variables such as sealant thickness, distance between sealant and the constraining plate and the rate of pressure were also studied. The data from the constrained blister is compared to the peel test and the lap shear test. Lastly the validity of the test modifications as indicated are discussed.