An Investigation of Certain Design Parameters of the Mushroom Apparel Flammability Tester.

摘要

This paper describes the effect of variations in design parameters of the apparatus on the heat transfer rates measured by the 'Mushroom Apparel Flammability Tester'. In this instrument,cylindrical specimens of apparel fabrics are suspended from a circular top plate,and the rate of heat transfer to the top plate and a cylinder inside the specimen are measured. The paper describes the effect of changing the cylinder diameter,and of introducing rods between the specimen and the cylinder to prevent deposition of molten polymer on the cylinder. Heat transfer rates measured on the top plate and on the cylinder are compared. Design parameters for the present version of this instrument and the corresponding test method were chosen on the basis of this investigation. The paper is in the form of a Master of Science thesis;the experimental work was performed at NBS.