Method for evaluating quality of liquid repellent film

Details Method for evaluating quality of liquid repellent film Method for evaluating quality of liquid repellent film

1998-09-03

2000-11-28

Font, Frank G.

Optics: measuring and testing

For light transmission or absorption

356382, G01N 2100, G01B 1106

Patent

active

061542830

ABSTRACT:
The present invention relates to a method for evaluating a liquid repellent film on parts subjected to liquid repellent treatment, particularly to a method for evaluating the quality of a liquid repellent film comprising a substance absorbing or emitting electromagnetic waves, wherein the transmittance or reflectance ratio of electromagnetic waves, or fluorescence intensity is measured, and the characteristics of the liquid repellent film is evaluated from the graph of the relationship between a film thickness and a contact angle with a liquid having been determined in advance.

REFERENCES:
patent: 4591271 (1986-05-01), Byers
patent: 5144151 (1992-09-01), Thorne et al.

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