E-glass

Milled E-glass (glass (amorphous silica) consisting of SiO₂, Al₂O₃, CaO, MgO, B₂O₃, F₂, Na₂O, K₂O, Fe₂O₃) is produced from an industrial E-glass side stream. Milled E-glass can be characterised by:

 

• ‘Green’ attributes, as a product of an industrial side stream.
• Relatively high Mohs hardness of 6.

 

Advantage over quartz and cristobalite and certain feldspar grades: free of labelling, milled E-glass grades can be used as an alternative when labelled grades of other mineral fillers are no longer permitted or wanted.

 

Basic properties

Property	Value	Unit
Moisture	0.2	[%]
pH	9	[-]
Hardness (Mohs)	6	[-]
Refractive index	1.57	[-]
Colour (D65/ 10°) L*	93	[-]
L.O.I.	0.5	[%]
Density	2.6	[kg/ dm3]

 

Product overview

Grade	D50 [µm]	D97 [µm]	OA [g/ 100 g]
G25	12	41	22
G75	31	130	15

 

Production location Portafill G

 

Application

Milled E-glass will provide:

 

• Burnish resistance: due to its hardness of 6 on Mohs scale, milled E-glass provides good burnish resistance (low tendency to become glossy when rubbed).
• Ease of tinting: due to the combination of refractive index, brightness and color, paints including fine milled E-glass particles will provide excellent reproducible colour results when working with tinting systems.
• Gloss control: the gloss level of an interior coating can be influenced by selecting the appropriate grade of milled E-glass.
• Scrub resistance: due to its hardness of 6 on Mohs scale, milled E-glass improves wet-scrub resistance of interior decorative paints.
• Stain resistance: milled E-glass acts as a supporting mineral filler in stain resistant coatings.