For example, if the ratio is 50:50 or 50%, then a wet film thickness of 100 microns will have a dry film thickness
of 50 microns, once the volatile components have evaporated.
All of the aforementioned data was entered into a statistical software program to characterize the effect of polyol combination, tail solvent, and dry film thickness
on 20 [degrees] gloss, DOI, and nine-day pendulum hardness.
For the larger type H panels, the researchers identified three areas on each panel that would be coated with varying dry film thicknesses
. The majority of each type II panel was coated according to the dry film thickness
recommended by the manufacturer.
An operating window for drying of polyimide film, which defines the operating region of producing smooth dry film, was experimentally constructed in terms of drying temperature against dry film thickness
. The maximum film thickness is limited by several drying defects such as orange peel and various degrees of blisters.
Table 1: The water diffusion coefficient (D), the relative dielectric constant of dry coating, and the water volume fraction in the coating at saturation for different film thicknesses and temperatures Dry film thickness
1000 250 ([micro]m) Temperature ([degrees]C) 20 50 20 50 Diffusion coefficient 2.16E-09 3.36E-09 3.18E-10 4.05E-10 ([cm.sup.2]/s) Relative dielectric constant 4.57 5.9 5.89 5.08 ([[epsilon].sub.d]) Water volume fraction 7.37 14.4 9.4 9.8 ([phi].sub.[infinity])% Time (day) 42 27 18 14 Gravimetric water absorption
Standard test method for nondestructive measurement of dry film thickness
of applied organic coatings using an ultrasonic gage.
The data show (Figure 12) that for films aged at 21[degrees]C, when 20 percent of the ammonium acrylate salt is left in the film (dry film thickness
, 1.5 microns), then optimal wet-tape adhesion occurs.
The product was spray-applied at 110 mils dry film thickness
. Surface cracks received an extra 30 mils.
Certified to the ANSI/NSF 61 Standard, the intermediate coat was applied at five to six mils dry film thickness
in a light blue color.
The regular dry film thickness
of 60 microns as applied by Eupec reduces the friction of the gas flow to the pipe wall, thus increasing the pipeline throughput.
The level of permeability is dictated by both the type and amount of refractory materials that are used in the coating formula and the dry film thickness
deposit on the core.
Daystrom applies the clearcoat to the entire solid wood table, including top and base, to a dry film thickness
of 4 to 5 mils using conventional low-pressure spray equipment.