Nueva técnica de estereolitografía para cura localizada en resinas termosensibles usando el láser de CO<sub>2</sub>

A. L. J. Munhoz; P. R. S. Wagner; M. C. F. Ierardi; A. E. Kiel; M. A. F. Scarparo; S. D. Allen

doi:10.3989/revmetalm.1998.v34.i2.689

New technique of stereolithography to local curing in thermosensitive resins using CO₂ laser

Authors

A. L. J. Munhoz State University of Campiñas - Unicamp, Mechanical Engineering Faculty (DEMA)
P. R. S. Wagner State University of Campiñas - Unicamp, Mechanical Engineering Faculty (DEMA)
M. C. F. Ierardi State University of Campiñas - Unicamp, Mechanical Engineering Faculty (DEMA)
A. E. Kiel State University of Campiñas - Unicamp, Institute of Physics (DEQ). Lab. of Láser Application to Fine Mechanics
M. A. F. Scarparo State University of Campiñas - Unicamp, Institute of Physics (DEQ). Lab. of Láser Application to Fine Mechanics
S. D. Allen Florida State University

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.i2.689

Keywords:

Láser, CO2, Thermosensitive resins, Stereolithography

Abstract

A theoretical and experimental study of thermosensitive resins used in thermal stereolithography is presented. The process of local curing through the application of infrared radiation, which has proved to be useful in a new technique for the making of prototypes by means of selective heating with CO₂ laser (10.6μm), is studied. The ideal composition of the thermosensitive resins has proved to be 10 parts epoxy, 1.4 part diethylene triamine (the curing agent) and 0.7 part silica powder. A physical theoretical model is applied for control of the parameters which influence the confinement of the curing in the irradiated bulk. A mathematical model is applied too; it was developed through the resolution of the heat conduction equation dependent on time in cylindrical co-ordinates, which enables to determine the behaviour of curing in terms of irradiation conditions.

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Published

1998-04-30

How to Cite

Munhoz, A. L. J., Wagner, P. R. S., Ierardi, M. C. F., Kiel, A. E., Scarparo, M. A. F., & Allen, S. D. (1998). New technique of stereolithography to local curing in thermosensitive resins using CO2 laser. Revista De Metalurgia, 34(2), 197–201. https://doi.org/10.3989/revmetalm.1998.v34.i2.689

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Issue

Vol. 34 No. 2 (1998)

Section

Articles

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