Premium
Low‐speed tack measurements of fluids and inks
Author(s) -
Phillips J. C.,
Chiang A. C.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070580505
Subject(s) - materials science , surface tension , composite material , viscosity , compatibility (geochemistry) , pressing , thermodynamics , physics
Low‐speed tack measurements (≈ 0.1–6.0 rad/s or ≈ 1–57 RPM) have been determined for polymeric‐based solution inks and oil‐based dispersion inks, tripropylene glycol (TPG), Igepal (I‐530), and N‐350 (viscosity calibration standard) fluids using a metal roller/incline method. The inks and fluids were tested under “unaged” or reference conditions at 25°C. The inks were “aged” at 70°C and, subsequently, tack measurements were made at 25°C. The tack ( T i ) and angular speed ( W i ) for the inks were empirically fitted as functions of incline angle (α) and “aged” time, t cd . A correlation was also made for tack and percent weight change, Δ W i . Other factors, such as viscosity, surface tension, humidity, and “aging” temperature, T cd , were also found to affect the magnitude and variation of tack. Additionally, the results suggest that low‐speed tack measurements are quite useful for selecting solution inks containing polymeric substances that possess the desirable spreading, mixing, and pressing properties in high‐speed/high‐volume printing and the component compatibility necessary for long‐term performance. © 1995 John Wiley & Sons, Inc.