Hollow Glass Microspheres (HL Series)
رقم CAS: 65997-17-3
HL15-HL60S hollow glass microspheres made from alkali-lime borosilicate glass, with true density 0.13-0.63 g/cm³, crush strength 500-18000 psi, and median particle size (d50) 35-80 μm. Engineered for thermal insulation coatings, oil well cementing, lightweight composites, automotive putty, and buoyancy applications.
المواصفات الفنية
| appearance | White to off-white free-flowing powder |
| composition | Alkali-lime borosilicate glass |
| true density | 0.13 – 0.63 g/cm³ (grade dependent) |
| crush strength | 500 – 18000 psi (3.4 – 124 MPa) |
| softening point | 600 – 800 °C |
| moisture content | ≤ 0.3% |
| particle size d50 | 35 – 80 μm |
| thermal conductivity | 0.05 – 0.12 W/(m·K) |
مجالات التطبيق
- Thermal insulation coatings and paints
- Oil well cementing and drilling fluids
- Lightweight structural composites
- Automotive body putty and fillers
- Buoyancy modules and deep-sea equipment
- Syntactic foam for marine and aerospace
- Low-density SMC/BMC molding compounds
- Emulsion explosives and energetic materials
- Cementitious grouts and lightweight concrete
- 3D printing filaments and additive manufacturing
مميزات المنتج
- Ultra-low density for significant weight reduction
- High isostatic crush strength across HL grade range
- Excellent thermal insulation performance
- Chemically inert with high alkali and solvent resistance
- Spherical shape improves flow and reduces resin demand
- Wide grade range (HL15 to HL60S) for application-specific tuning