FUNDAMENTALS OF PAINT RHEOLOGY
A WELL-FORMULATED PAINT NORMALLY EXHIBITS VISCOSITIES RANGING FROM AROUND 1.0 POISE AT VERY HIGH APPLICATION SHEAR RATES (BRUSHING, SPRAYING, ROLLER COATING PROCESSES) TO ESSENTIALLY AN INFINITE VISCOSITY AT VERY LOW SHEAR RATES (SETTLING, SAGGING, LEVELING, PENETRATION CONDITIONS). HENCE, THE PAINT MAN SHOULD BE INTERESTED IN THESE FLOW EXTREMES AND SHOULD BE MEASURING VISCOSITIES IN THESE REGIONS WITH PROPER VISCOMETERS. UNFORTUNATELY, HE IS PRESENTLY SADDLED WICH ARCHAIC INSTRUMENTS THAT GIVE VAGUE NUMBERS (NOT TRUE VISCOSITIES) IN A MIDDLE SHEAR RATE RANGE WHICH IS OF NO SPECIAL INTEREST. PRESENT PAINT VISCOMETERS SERVE ONLY TO PROVIDE ARBITRARY CONTROL NUMBERS OF QUESTIONABLE VALUE. DATA ARE OFFERED TO SUBSTANTIATE THE ABOVE STATEMENTS AND PROPOSALS ARE OUTLINED SHOWING HOW THE PAINT MAN CAN WORK HIMSELF OUT OF THE PRESENT UNSATISFACTORY STATE OF AFFAIRS AND ADVANCE HIS CAPABILITIES FOR MEASURING AND CONTROLLING FLOW IN THE PAINT INDUSTRY TO MATCH THE GENERAL ADVANCE BEING MADE IN FLOW MEASUREMENTS. /AUTHOR/
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Supplemental Notes:
- Vol 40, No 522, PP 301-307, 5 FIG, 1 TAB, 1 PHOT, 9 REF
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Authors:
- Patton, T C
- Publication Date: 1968-7
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Flow measurement; Paint; Rheology; Shear rate; Viscometers; Viscosity
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216675
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 18 1994 12:00AM