High performance Hollow glass microspheres size 10-120μm density
reducing
Description of hollow glass microspheres:
High-performance hollow glass beads (hereinafter referred to as
HGS) is a closed, hollow sphere with a wall thickness of 1~3μm,
containing dilute nitrogen, carbon dioxide and other gases. Its
main chemical composition is soda lime borosilicate glass. HGS, as
a lightweight micron-level resin material filler, can effectively
reduce the density of products, increase or improve the water
resistance, mechanical properties, shrinkage and rheological
properties of products.
Specification of hollow glass microspheres:
| SPECIFICATION OF HOLLOW GLASS MICROSPHERES |
| Types | True Density
(g/cm3) | Bulk Density
(g/cm3) | Compressive
Strength (Mpa/PSI) | Particle size |
| D50 (μm) | D90 (μm) |
| H20 | 0.20-0.22 | 0.10-0.12 | 4/500 | 65 | 110 |
| H22 | 0.21-0.24 | 0.11-0.13 | 5/750 | 65 | 100 |
| H25 | 0.24-0.27 | 0.13-0.15 | 5/750 | 65 | 100 |
| H28 | 0.27-0.30 | 0.14-0.17 | 10/1500 | 55 | 85 |
| H30 | 0.29-0.32 | 0.15-0.18 | 10/1500 | 55 | 85 |
| H32 | 0.31-0.33 | 0.17-0.19 | 14/2000 | 45 | 80 |
| H35 | 0.33-0.37 | 0.18-0.21 | 21/3000 | 40 | 70 |
| H38 | 0.37-0.39 | 0.19-0.22 | 38/5500 | 40 | 65 |
| H40 | 0.39-0.42 | 0.19-0.23 | 28/4000 | 40 | 70 |
| H42 | 0.41-0.44 | 0.21-0.24 | 55/8000 | 40 | 60 |
| H46 | 0.44-0.48 | 0.23-0.26 | 41/6000 | 40 | 70 |
| H50 | 0.48-0.52 | 0.25-0.27 | 55/8000 | 40 | 60 |
| H55 | 0.53-0.57 | 0.27-0.29 | 69/10000 | 40 | 60 |
| H60 | 0.58-0.62 | 0.29-0.34 | 83/12000 | 40 | 65 |
Properties of hollow glass microspheres:
1. Good economy
Compared with fillers of other shapes, hollow glass beads have a
small surface area to volume ratio and low oil absorption, which
can reduce the amount of matrix resin and increase the amount of
fillers. At the same time, glass beads with a smaller volume can be
filled into larger gaps of glass beads, increasing the total
filling amount, further reducing the amount of resin, and reducing
the cost. Lightweight glass hollow microspheres can occupy more
volume than ordinary fillers of the same weight. This means that
hollow glass microspheres have more cost advantages when
considering unit volume cost rather than unit weight cost.
2. Reduce viscosity and increase fluidity
The appearance of hollow glass microspheres is spherical. Compared
with other irregular-shaped fillers, it is easier to flow and can
roll like steel balls in a bearing. Therefore, adding hollow glass
microspheres to the composite material can reduce the melt
viscosity and The internal stress makes the processing and forming
easier, which is conducive to the conventional forming of composite
materials.
3. Reduce material density
Generally, fillers have a relatively high density and are added to
plastics and rubbers as extenders. Although they can achieve the
purpose of reducing costs, they tend to increase the density of the
products and affect the performance and use of the products.
Because hollow glass beads are hollow products, especially floating
beads, the density is very small, about 0.40 ~ 0.75 g/cm3. Now some
products, such as some hollow glass beads of 3M company, have a
lower density, which can reach 0.125~0.16. g/cm3 level. Adding such
low-density fillers to plastics can not only reduce costs, but also
make products lighter.
Application of hollow glass microspheres
| Building materials | |
| Thermal insulation coating (roller coating) | H25, H30 |
| Thermal insulation coating (spraying) | H40 |
| Pipeline tank insulation paint | H32 |
| Repair putty | H25 |
| Modified plastic, FRP | |
| Solid floating materials | H20, H25,H30 |
| Polyurethane injection | H32 |
| SMC/BMC | H32, H38, H46 |
| Thermosetting plastic | H46 |
| Thermoplastic | H46 |
| Oilfield | |
| Oilfield cementing mud | H40-H60 |
| Oilfield drilling fluid | H40-H60 |
| Other | |
| Adhesives | H40 |
| Emulsion explosives | H20 |
| Yogi | H20 |
| Damping material | H40 |
