The effective utilization of differential scanning calorimetry (DSC) to assess molded parts
A widely accepted method for determining degree of cure of diallyl pthlalate (DAP) resin based molded parts is differential scanning calorimetry (DSC). The differential scanning calorimeter is a laboratory instrument which measures the exothermic heat of reaction as the thermosetting molding compound undergoes polymerization (cure). It is standard industry practice to utilize the data from this analysis to assign the percentage of cure for the molded part. This practice was addressed for several reasons. First, the DSC versus cure time is not a linear function. However, the usual convention specifies a linear scale for the percentage cure. This can cause concern for the customer when this calculated ''percentage cure'' is below a value that is perceived as acceptable. This perception is often based on a psychological premise as to the quality of the part as it relates to the percentage cure and not to the associated physical properties of the part. 3 refs., 3 figs., 1 tab.
- Research Organization:
- EG and G Mound Applied Technologies, Miamisburg, OH (USA)
- DOE Contract Number:
- AC04-88DP43495
- OSTI ID:
- 6092957
- Report Number(s):
- MLM-3592(OP); CONF-8905165-1; ON: DE89014737
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
360602 -- Other Materials-- Structure & Phase Studies
CALORIMETERS
CALORIMETRY
CHEMICAL REACTIONS
CURING
HEAT FLOW
MATERIALS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERIZATION
POLYMERS
RESINS
SYNTHETIC MATERIALS