Sodium Silicate
Na2SiO3 Deflocculant, De-flocculant
Formula: Na2SiO3
| DENS - Density (Specific Gravity) |
2.40 |
| MLPT - Melting Point (MP) |
1080C M |
The most popular deflocculant used in casting slips for many years. It is nearly always used with soda ash (when employed alone it can make a slip 'stringy' and thixotropic). The material is effective, reliable and inexpensive. However, it attacks the plaster in molds much more than more modern deflocculants and it is easier to over-deflocculate a slip with sodium silicate.
There are potassium based deflocculants that are similar to the corresponding sodium ones. They can be employed where the presence of sodium is undesirable. Soda ash is more suitable for deflocculating glazes. In addition, a wide range of organic deflocculants are available as alkali salts of pyrogallic, humic or tannic acids. They have long working ranges and can increase the apparent plasticity of the clay. As noted, their use prolongs mold life compared with sodium silicate and soda ash and they are less prone of over-deflocculation. Tetramethylammoniumhydroxide is also an organic compound that is used where residues from inorganic salts cannot be tolerated. It is a strong base that can even attack glass and quartz.
Out Bound Links
In Bound Links
- (Articles - Unspecified)
Understanding the Deflocculation Process in Slip Casting Understanding the magic of deflocculation and how to measure specific gravity and viscosity, and how... - (Materials - Alternative)
Darvan - Polymer deflocculant, de-flocculant
Darvan 811, Darvan No. 7, Darvan 821A, Darvan C
- (Articles - Unspecified)
Binders for Ceramic Bodies An overview of the major types of organic and inorganic binders used in various different ceramic in...
XML for Import into INSIGHT
<?xml version="1.0" encoding="UTF-8"?>
<material name="Sodium Silicate" descrip="Na2SiO3 Deflocculant, De-flocculant" searchkey="Waterglass" loi="0.00" casnumber="61981-08-6">
<oxides>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="50.780" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="49.220" tolerance=""/>
</oxides>
</material> | 
The future of ceramic recipe, material and physical testing record keeping is here.
Maintain your recipe database on-line
- Login to a private account or work with others in a group account (e.g. university).
- Nothing to install (access it using your web browser). It is always the latest version.
- Easy to import your existing data.
- As many side-by-side recipes as you want.
- Many ways to search and classify glaze and body recipes.
- Glaze and body recipes are robust, with units-of-measure, unlimited pictures with individual titles and descriptions.
- Add variations to a recipe; each with its own pictures, descriptions and name/code-number extensions.
- Recipes can link to typecodes, projects and firing schedules (all managed in their own areas).
- Standard reports and mix ticket reports with last-minute-totalling; variations report as if they are a complete recipe.
- Video tutorials, help system, contact form on every page, dedicated messaging and support ticket systems.
- It is an industrial-strength database system (unlimited capacity, fast, reliable, scalable).
Imports many file formats
- Glaze recipe formats supported: HyperGlaze, GlazeGhem, GlazeMaster, Matrix, INSIGHT XML recipes (single and multiple), INSIGHT SQLite DB files.
- Assign a batch number to imports, and later search by batch.
- Assign multiple typecodes to imported glaze and body batches (to classify) and search on these later.
- Prepend character sequences to glaze recipe names during import.
- Import the pictures and pair them to their corresponding records automatically.
- One click to automatically export the database to an SQLite DB database file and download it (for use with desktop INSIGHT or just as a backup).
- Export and import individual glaze recipes as text or XML.
Perfect for Education
- Ceramic study programs can now accumulate material, recipe and testing data year-after-year, students can login and together build a valuable ceramic glaze and body knowledge resource.
- Students already have internet connected devices, computers are not even needed in the class.
- The Reference Manager gives you quick access to the Digitalfire Ceramic Reference Database.
Learn more..
|
Watch the video or sign-up at http://insight-live.com.