Hollow Glass Sphere for Anticorrosive coatings
Our hollow glass spheres are advanced functional fillers engineered for high-performance anticorrosive coatings. These micron-sized, thin-walled spheres deliver exceptional benefits: they significantly reduce coating density, enabling lighter-weight formulations, while their spherical shape improves flowability and application uniformity.
Crucially, the rigid glass shells create a tortuous path that extends the diffusion distance of corrosive media such as water, oxygen, and ions, dramatically enhancing barrier protection and durability. Compatible with epoxy, polyurethane, and other resin systems, they optimize volume solids without compromising adhesion or mechanical strength. Ideal for marine, industrial, and infrastructure applications, our hollow glass spheres provide a reliable, cost-effective solution for superior, long-lasting corrosion protection.
Properties:
Pure white color, Hollow Glass Microsphere can be widely used in products which have high requirements for looks and colors.
Low density, reducing the products’ basic weight obviously after filling. (the density is one out of a dozen of traditional filler particles’ density). Relatively large volume, which can substitute and save more resins, reducing cost.
High dispersion and good fluidity, dimensional stability, reduced warpage and shrinkage when used as additives.
Heat insulation, sound insulation, mostly used as heat insulation paints and coatings, automotive sealants.
In addition, corrosion resistant, fire resistant, non-conducting.
Chemical composition(%):
| SiO2 | 58-71 |
| Na2CO3 | 12-25 |
| B2O3 | 3-12 |
| Al2O3 | 0-10 |
| CaO | 0.2-1.0 |
| Fe2O3 | 0-0.5 |
| MgO | 0-0.05 |
Physical Index:
| True Density | 0.18-0.60g/cm3 |
| Bulk Density | 0.10-0.34g/cm3 |
| Crush Strength | 4-125Mpa/500-18000Psi |
| Survival | Min 90% |
| Flotation | Min 92% |
| Moisture | Max 0.5% |
| Particle Size | D50:20-70um |
| Max. Particle Size: | 200um |
| Melting Point | 1600°C |
Specifiction
| Spec. | True Density(g/cm3) | Bulk Density(g/cm3) | Compressive strength(Mpa/Psi) | D50(um) | D90(um) | Packing(Kgs) |
| HL15 | 0.13-0.17 | 0.08-0.09 | 4/500 | 65 | 120 | 8 |
| HL20 | 0.20-0.22 | 0.10-0.12 | 4/500 | 65 | 110 | 10 |
| HL25 | 0.24-0.27 | 0.13-0.15 | 5/750 | 65 | 100 | 12.5 |
| HL30 | 0.29-0.32 | 0.15-0.18 | 10/1500 | 55 | 85 | 15 |
| HL32 | 0.31-0.33 | 0.17-0.19 | 14/2000 | 45 | 80 | 15 |
| HL35 | 0.33-0.37 | 0.18-0.21 | 21/3000 | 40 | 70 | 15 |
| HL38 | 0.37-0.39 | 0.19-0.22 | 38/5500 | 40 | 65 | 20 |
| HL40 | 0.39-0.42 | 0.19-0.23 | 28/4000 | 40 | 70 | 20 |
| HL42 | 0.41-0.44 | 0.21-0.24 | 55/8000 | 40 | 60 | 20 |
| HL46 | 0.44-0.48 | 0.23-0.26 | 41/6000 | 40 | 70 | 22.5 |
| HL50 | 0.48-0.52 | 0.25-0.27 | 55/8000 | 40 | 60 | 25 |
| HL55 | 0.53-0.55 | 0.27-0.29 | 68/10000 | 40 | 60 | 25 |
| HL60 | 0.58-0.62 | 0.29-0.34 | 83/12000 | 40 | 65 | 30 |
| HL60S | 0.58-0.63 | 0.30-0.34 | 125/18000 | 35 | 55 | 30 |
| HS38 | 0.37-0.39 | 0.19-0.22 | 38/5500 | 30 | 50 | 20 |
| HM10 | 1.4-1.6 | 0.45-0.50 | 193/28000 | 5 | 10 | 30 |
| HM15 | 1.2-1.3 | 0.40-0.45 | 124/18000 | 7 | 15 | 30 |
| HM20 | 1.05-1.15 | 0.39-0.44 | 124/18000 | 9 | 20 | 25 |
| HM30 | 0.9-1.0 | 0.35-0.4 | 83/12000 | 14 | 30 | 25 |
| HS20 | 0.18-0.22 | 0.10-0.12 | 7/1000 | 60 | 90 | 10 |
| HS22 | 0.20-0.24 | 0.11-0.13 | 8/1200 | 45 | 70 | 10 |
| HS28 | 0.27-0.30 | 0.15-0.17 | 28/4000 | 45 | 65 | 15 |
| HS38 | 0.36-0.40 | 0.19-0.22 | 38/5500 | 30 | 50 | 20 |
| HS42 | 0.40-0.44 | 0.21-0.24 | 55/8000 | 25 | 40 | 20 |
| HS46 | 0.44-0.50 | 0.22-0.25 | 110/16000 | 20 | 30 | 22.5 |
| HS60 | 0.58-0.62 | 0.29-0.33 | 193/28000 | 16 | 25 | 30 |
| HS65 | 0.63-0.67 | 0.30-0.33 | 207/30000 | 13 | 20 | 32 |
| HS70 | 0.75-0.80 | 0.33-0.35 | 207/30000 | 10 | 15 | 35 |
Application:
Lightweight cement, low-density oil well cementing slurry & low-density drilling fluids additive.
Low-density FRP(fiberglass-reinforced plastic), SMC, BMC composites.
Nylon, PA, PA6, PA66 for reducing weight.
Low-density adhesives & sealants.
Heat insulation paints and coatings.
Construction (reducing warpage/shrinkage).
Insulation and Buoyancy.
Artificial marble.
Hollow glass microspheres can be used in paint and coatings, construction sealant, rubber, plastic, FRP, artificial stone, putty and other products as filler and weight-reducing agent. The glass bubbles can also be used to produce high-strength, low-density cement slurry and low-density drilling fluid in oil and gas extraction industry. more and more industries now trying to testing the hollow glass spheres as additives to improve their products’ properties.
