||Heat of Reaction Test Method Under Way
The proposed standard thermal analysis test, Heat of Reaction
and Degree of Cure by Differential Scanning Calorimetry, is being
developed by ASTM Subcommittee E37.01 on Test Methods and Recommended
Practices, part of Committee E37 on Thermal Measurements.
The method will be of interest to those involved with thermal
hazard evaluation, rubber and thermoset cure, says subcommittee
chairman Roger Blaine, applications manager, T.A. Instruments,
New Castle, Del.
In thermal stability measurements, knowledge of the heat of reaction
is required for safety reasons. Heat of reaction is being considered
by OSHA as one tool for characterization of orphan waste drums.
In the case of rubber, the heat of reaction tells whether the
test sample is sufficiently cured. Thus, it is a quality assessment
tool. In the case of thermosets, the heat of reaction is used
to determine appropriate processing conditions and shelf life
For additional technical information, contact Roger Blaine, Ph.D., TA Instruments, 109 Lukens Dr., New Castle, DE 19720
(302/427-4017). Committee E37 meets May 23-24 in Toronto, Ontario,
Canada. For meeting or membership details, contact Tom OToole, ASTM (610/832-9739). //
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