Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1989-01-25
1991-12-31
Chapman, John
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
G01N 1108
Patent
active
050760963
ABSTRACT:
Various methods have been proposed for measuring the viscosity of thermosetting polymers. It has been found that these method are generally inaccurate. A test which avoids the inaccuracies of previous techniques is proposed. In this test the heated thermosetting resin is forced at a known flow rate through a runner and through a capillary tube at the end of the runner. By measuring the pressure differential across the capillary a meaningful measure of viscosity is obtained.
REFERENCES:
patent: 3203225 (1965-08-01), Sieglaff et al.
patent: 4213747 (1980-07-01), Friedrich
patent: 4425790 (1984-01-01), Bice et al.
Blyler, Jr. Lee L.
Hubbauer Philip
Poelzing Gerhard W.
Progelhof Richard C.
American Telephone and Telegraph Company AT&T Bell Laboratories
Chapman John
Roskos Joseph W.
Schneider Bruce S.
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