Filler Hollow Glass Beads
Filler Hollow Glass Beads
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Variant: 250 Gr.
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Backorder: longer delivery time. Ask us for the current lead time.
Backorder: longer delivery time. Ask us for the current lead time.
Backorder: longer delivery time. Ask us for the current lead time.
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Filler beads (also known as hollow glass beads) are microscopic glass spheres. They are mainly mixed into casting systems and other materials. This gives you a lighter casting and reduces material consumption.
Can be used with silicone, polyurethane, plaster, acrylic resin and other casting resins.
- Extends the working time
- Increases the possible casting thickness per layer
- Makes the end product lighter
- Packed in 250 g units
When used in epoxy:
- Ideal for epoxy below the waterline, as these glass beads do not absorb water
- These glass beads increase the density of (epoxy) foam
- Improve adhesion to softwood
- Good compressive properties and a good density-to-compression ratio
Technical data
- Colour: white
- Average diameter: 70 µm
- Density: 0.12 g/cm³
- Effective density: 0.20 g/cm³
- Glass temperature: 980°C
- Thermal conductivity: 0.04 W/mK
- pH value: 7
- Oil absorption:
- 40 g of oil per 100 cm³ of glass beads
- 160–200 g of oil per 100 g of glass beads
- The glass beads have a hydrophobic coating.
Processing
Mixed with silicone, the filler beads are suitable for making flexible fishing lures. They also raise the hardness of the silicone (its Shore value) considerably.
Please note: we recommend adding no more than 12% of the weight of Part A. Bear in mind that adding glass beads does reduce the tear strength of the silicone!
Example: 250 g Silicone Condensation 20 A + 5 g Silicone Condensation 20 B + 30 g filler beads. This increases the hardness by approximately 10 Shore points. As a very rough guide, that is 1 Shore point per % of glass beads.
Combined with the Polyurethane Casting System D80, the filler beads are suitable for making lightweight figures that can even float! We recommend adding no more than 25% by weight. The exact amount of glass beads naturally depends on the material being mixed and the desired result.
Example: 80 g A + 80 g B of the Polyurethane Casting System D80 with 40 g of glass beads.
Special notes
The density of the glass beads is 0.12–0.20 g/cm³. This means that 250 g is sufficient for 1.25 to 2 litres.
Please note: glass is a very poor conductor of heat. Take this into account when using a casting material that generates a lot of heat which needs to dissipate, such as polyurethane.
The strength of a cast polyurethane figure containing glass beads will be considerably lower than without glass beads (the result becomes more brittle).
Shelf life
Unlimited shelf life if stored dry.
Product information
Product information sheet Filler Hollow Glass Beads| Color | White |
|---|---|
| Bulk Weight (g / L) | 100 |
| Density (g / cm³) | 0,2 |
| Particle Size (microns) | 70 |
| PH value | 7 |
Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
Contact us via our contact page or email info@siliconesandmore.com. We're happy to help you quickly.
Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.