EMULSITONE COMPANY
19 Leslie Court
Whippany, New Jersey 07981
TEL. (973)386-0053
FAX (973)503-0256



EMULSITONE GLASS FORMING SOLUTION #122


Emulsitone Glass Forming Solution #122 forms a glassy inorganic film consisting primarily of SiO2 with various modifiers to permit the films to harden at low temperatures. The glass film which is formed will adhere to nearly all metallic surfaces including aluminum, gold, stainless steel, copper, nickel, chromium, etc. The glass film will adhere to all glasses and to many polymer surfaces. Glass Forming Solution #122 may be applied to these surfaces by spinning, spraying, painting, or dipping. Where exceptional uniformity in film thickness is required, spinning will yield best results, with variations in thickness of less than a few percent. Glass Forming Solution #122 forms thin films up to 10,000 angstroms on one application depending upon the nature of the substrate. Films of greater thickness may be prepared by applying additional layers with intermediate heat treatment between applications. The specific substrate will determine the heat treatment required to densify the film sufficiently to permit application of a second layer without experiencing film cracking.

Films of Emulsitone Glass Forming Solution #122 must be heat treated to achieve very hard scratch resistant films. Reference to Table I shows the effect of heat treatment on hardening the film. To obtain the data, a stainless steel needle of approximately a 10 mil radius under the loading shown was used to scratch the film.

TABLE I



HARDNESS OF EMULSITONE GLASS FORMING SOLUTION #122 AS A FUNCTION OF HEAT TREATMENT

Heat Treatment Time Weight Load On St. Steel Needle
Room Temperature 16 Hrs. 25 gms.
100oC 1 Hr. 70 gms.
200oC 1 Hr. 120 gms.
400oC 1 Hr. 500 gms.



Films of EMULSITONE GLASS FORMING SOLUTION #122 are not soluble in most mineral acids such as aqua regia, sulfuric acid, etc. In addition, after suitable densification, these films are only very slowly dissolved in 10% sodium hydroxide solution. Table II shows the dissolution rates of films of Glass Forming Solution #122 in HF and 10% sodium hydroxide solutions.

TABLE II



DISSOLUTION RATES OF FILMS OF EMULSITONE GLASS FORMING SOLUTION #122 IN HF AND NaOH SOLUTIONS

Densification Temp. Time Required To Dissolve 2000 Angstroms Film
(15 minute duration) 1% HF 5% HF 10% HF 10% NaOH
100oC 1 3/4 min. 10 sec. 5 sec. 10 min.
200oC 1 3/4 min. 10 sec. 5 sec. 60 min.
300oC 1 3/4 min. 10 sec. 5 sec. 120 min.
400oC 1 3/4 min. 10 sec. 5 sec. 360 min.
500oC 1 3/4 min. 10 sec. 5 sec.



Films of Emulsitone Glass Forming Solution #122 are transparent with an index of refraction of approximately 1.52. Films 2000 Angstroms thick show no significant absorption in the UV or visible spectral range. The films exhibit high electrical resistivities characteristic of glasses in general.

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