Method of and apparatus for measuring the softening point of a v

Details Method of and apparatus for measuring the softening point of a v Method of and apparatus for measuring the softening point of a v

1986-07-21

1987-12-08

Frankfort, Charles

Thermal measuring and testing

Transformation point determination

374 46, 73847, G01N 2504

Patent

active

047115874

ABSTRACT:
A method of and an apparatus for measuring the softening point of a vitreous specimen in which the viscosity variation as a temperature function is determined by applying torsion to the specimen and measuring the transmitted torque as a function of temperature.

REFERENCES:
patent: 2579424 (1951-12-01), Gehman
patent: 2856769 (1958-10-01), Bennett et al.
patent: 3277700 (1966-10-01), Myerholtz, Jr.
patent: 3369391 (1968-02-01), Warfield
patent: 3380291 (1968-04-01), Wilson
patent: 3696664 (1972-10-01), Moser et al.
patent: 3718028 (1973-02-01), Moser et al.
patent: 3756074 (1973-09-01), Hedvig
patent: 4259860 (1981-04-01), Labino

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