Glass composition

Abstract

Abstract PURPOSE: Harmless and cheap glass composition, able to bake at a low temperature on the substrate, substituting a part of oxygen in basic glass containing SiO 2 , B 2 O 3 , Al 2 O 3 , and (CaO+Na 2 O) at a fixed ratio by fluorine. CONSTITUTION: Glass composition, substituting oxygen in basic material composed of more than 99wt% of it, except moisture, by 6.0≤SiO 2 ≤34.0, 18.0≤B 2 O 3 ≤37.5, 7.5≤A 2 O 3 ≤37.5, 20.0≤CaO+Na 2 O≤40.0, by fluorine corresponding to 2W20 mol against the basic glass 100 by F 2 calculation. In order to coat the above basic glass on the substrate, on occasion of carrying out dry process glazing, glass composite pigment is mixed and on occasion of carrying out wet process glazing, additives, such as pigment, carboxymethylcellulose etc., are added by usual method, on occasion demands and water type slip is made and then, is glazed and baked. At the time of coating the above composite on the glass, slow cooling is carried out as a rule and maximum temperature is maintained at 330W650°C for about 3W10 minutes. That is, the above composition is made by cheap baking cost and thermal expansion coefficient is able to closely resemble to iron plate, glass etc. and also, adhesive property is made good, because baking temperature is low. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Seishiro Yamakawa
• 👤 Hisamitsu Takahashi

Bibliographic Details