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Search Publications by: Kathryn Butler (Assoc)

Displaying 126 - 134 of 134

Physical Modeling of Intumescent Fire Retardant Polymers

January 1, 1997

Author(s)

Kathryn M. Butler

Intumescent chemical systems are designed to swell into a thick, robust foam upon exposure to heat, protecting the underlying material from fire by providing a physical barrier to heat and mass transfer. The mechanisms determining the fire-resistant

Analytical Model of Pyrolysis for a Finite Thickness Sample on a Semi-Infinite Base (NISTIR 5904)

October 28, 1996

Author(s)

Kathryn M. Butler

To test the flammability of materials, a sample is placed on a substrate and exposed to a uniform heat flux. Measurements include sample mass and upper and lower surface temperatures as functions of time. Several analytical models have been developed in an

Analytical Model of Pyrolysis for a Finite Thickness Sample on a Semi-Infinite Base.

October 28, 1996

Author(s)

Kathryn M. Butler

Heat Transfer in an Intumescent Material Using a Three-Dimensional Lagrangian Model

September 10, 1995

Author(s)

Kathryn M. Butler, Howard R. Baum, Takashi Kashiwagi

The addition of heat transfer calculations to a three-dimensional, time-dependent numerical model of intumescent materials is described. Intumescent materials protect an underlying substrate from fire through endothermic chemical reactions producing

Three-Dimensional Kinetic Model for the Swelling of Intumescent Materials (NISTIR 5499)

September 1, 1994

Author(s)

Kathryn M. Butler, Howard R. Baum, Takashi Kashiwagi

An intumescent coating protects the underlying surface from fire by swelling into a thick insulating char. Design of intumescent materials has proceeded largely by systematic testing of a variety of formulations, since the mechanisms of physical, thermal