Dispersion Formulation and Characteristics

This section reviews properties of dispersions and characteristics, which are important to the formulation and application of dispersions. They include solids content, pH, stability, and critical cracking thickness. [Pg.187]

Dispersions of pol5Tetrafluoroethylene are colloidal emulsions of small pol mier particles ( 0.25 pm) in water which are negatively charged. They contain relatively high concentrations of PTFE, which increases their specific gravity. An estimate of solids content can be obtained from the specific gravity (Table 5.12). [Pg.187]

Ionic strength of a PTFE dispersion affects its conductivity. Conductivity is a very important characteristic of PTFE dispersions and can be a good indicator of its shelf life. It can be measured by a conductivity meter quickly and easily. Conductivity can also influence the viscosity and shear stability of the dispersion. Very high conductivity can destabilize the dispersion. [Pg.187]

Solids Concentration, % Specific Gravity Density of Solids, g/1 [Pg.188]

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