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TECHNICAL PAPERS

Orientation Specific Thermal Properties of Polyimide Film

[+] Author and Article Information
Robert J. Samuels

Polymer Engineering and Science, School of Chemical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0100e-mail: Robert.samuels@che.gatech.edu

Nancy E. Mathis

Mathis Instruments Ltd., Incutech Building, Garland Court, Fredericton, New Brunswick, Canada, E3B 6C2e-mail: Nancy@MathisInstruments.com

J. Electron. Packag 123(3), 273-277 (Mar 10, 2000) (5 pages) doi:10.1115/1.1347986 History: Received March 10, 2000
Copyright © 2001 by ASME
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References

Cassidy, P. E., 1980, Thermally Stable Polymers: Synthesis and Properties, Marcel Dekker, New York.
Samuels, R. J., 1974, Structured Polymer Properties. The Identification, Interpretation, and Use of Polymer Structure, Wiley-Interscience, New York.
Samuels, R. J., 1985, “Polymer Structure: The Key to Process-Property Control,” Special Symposium issue of Polymer Engineering and Science entitled, “Polymer Process-Structure-Property Relationships,” Vol. 25, p. 864.
Hardaker, S., and Samuels, R. J., 1996, “Quantitative Characterization of Anisotropic PMDA-ODA Film Properties,” in “Polyimides: Trends in Materials and Applications,” C. Feger, M. M. Khojasteh, and S. E. Molis, S.P.E. Pub., p. 267.
Mathis, N. E., 1999, “New Instrument for Thermal Management Design,” IMAPS International Symposium on Packaging Systems, San Diego, Jan.
Airy,  G. B., 1833, “Remarks on Mr. Potter’s Experiment on Interference,” Philos. Mag., 2, p. 161.
Faust,  R. C., and Marrinan,  H. J., 1955, “The Determination of the Order of Interference in White Light,” Br. J. Appl. Phys., 6, p. 351.
Harding, G. F., 1986, “Double Refraction in Polymers; Measurement and Interpretation,” Optical Properties of Polymers, G. H. Meeten, Elsevier, London.
Cha,  C. Y., Moghazy,  S., and Samuels,  R. J., 1992, “Optical Characterization of Three Dimensional Surface and Bulk Anisotropy in High Refractive Index Polymers,” Polym. Eng. Sci., 32, p. 1358.
Cha,  C., and Samuels,  R. J., 1995, “Effect of Orientation on the Relative Dispersion of PMDA-ODA Polyimide and Polypropylene,” J. Polym. Sci., Part B: Polym. Phys., 33, p. 259.
TC Probe Instruction Manual, Mathis Instruments Ltd., Dec. 1999.
Mathis, N. E., and Browne, J., 1998, “Thermal Conductivity of Thin Film Carbon Fiber Die Attach,” SPE RETEC.
Carslaw, H. S., and Jaegar, J. C., 1956, Conduction of Heat in Solids, Oxford Univ. Press, Amen House, London.
Mathis, N. E., 1999, “Eliminating Density and Heat Capacity Requirements in Transient Thermal Conductivity Measurements,” SPE ANTEC.

Figures

Grahic Jump Location
The thin film is placed between the sensor and the blotter so that the saturation point can be determined
Grahic Jump Location
The TC Probe™ is calibrated with known reference standards to produce a linear calibration equation (r=0.996). The screen capture shows the coordinates of the triplicate tests conducted on each sample as well as the name of each material: laf, cal3 and hdpe, respectively, left to right.
Grahic Jump Location
A sketch of blotter overlay results illustrates the effect of metal and foam blotters on the slope of the traces
Grahic Jump Location
No deviation occurs between these two averaged blotter plots for two layers of PI-1, indicating that the heat wave has not passed into the blotter material and that the results represent only the polyimide film
Grahic Jump Location
The separation of plots indicates the point where the heat wave has penetrated one layer of the PI-1 sample (0.3525 s1/2 )
Grahic Jump Location
Thermal conductivity decreases with increasing planarity index

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