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Record 29 of 2139
Accurate Measurement of Heat Capacity by Differential Scanning Calorimetry
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Abstract: Experience with high quality heat capacity measurement by differential scanning calorimetry is summarized and illustrated, pointing out three major causes of error: (1) incompatible thermal histories of the sample, reference and blank runs; (2) unstable initial and final isotherms; (3) incompatible differences between initial and final isotherm amplitudes for sample, reference and blank runs. Considering these problems, it is shown for the case of polyoxymethylene that accuracies in heat capacity of 0.1 percent may be possible.
Publication Date: Aug 01, 1984
Document ID:
19850004667
(Acquired Nov 13, 1995)
Accession Number: 85N12975
Subject Category: COMPOSITE MATERIALS
Document Type: Technical Report
Publication Information: Composite Struct. Mater.; p 127-145
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Rensselaer Polytechnic Inst.; Troy, NY, United States
Description: 19p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: AMPLITUDES; HEAT MEASUREMENT; ISOTHERMS; SPECIFIC HEAT; THERMAL ANALYSIS; CALORIMETERS; CRYSTALLIZATION; ERRORS; STEADY STATE; TEMPERATURE GRADIENTS
Imprint And Other Notes: In its Composite Struct. Mater. p 127-145 (SEE N85-12966 04-24)
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