DONACARBO Rigid Insulation
DONACARBO RIGID INSULATION, made from DONACARBO FELT, is impregnated with high carbon content resin, molded into the required shapes, hardened, carbonized, and graphitized. The feature of this product is to be superior in purity and uniformity.
Applications
Crystal growth furnaces for silicon, etc.
Sintering furnaces for carbon, ceramics, cemented carbide, etc.
Brazing furnaces for silver, copper, SUS, nickel, etc.
Various vacuum evaporation furnaces for aluminum etc.
Products and specification
| DON-1000 | DON-2000 | DON-3000 | DON-4000 | ||
|---|---|---|---|---|---|
| Specifications | Untreated | Coated | Graphite-sheeted | Cloth-lining | |
| Type | R(Standard, Bulk density 0.13 g/cm3), H(High thermal insulation, Bulk density 0.16 g/cm3) | ||||
| Standard dimensions | W 1,000mm × L 1,500mm × [ t 30mm, t 40mm, t 50mm ] | ||||
| Maximum size | Flat Plate | W 1,300mm × L 2,000mm × t 250mm (up to W 1,600mm) | |||
| Cylinder | Φ 1,600mm × H 1,200mm × t 250mm | ||||
| Disc | Φ 1,300mm × t 250mm (up to 1,650mm by interlocking with adhesive) | ||||
Impurities (measurement example)
| Item | Ash | B | Na | Mg | Al | Si | P | K | Ca | Ti | V | Cr | Mn | Fe | Ni | Cu | Zn |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measured value （ppm） |
20 | 1.5 | 0.08 | 0.08 | 1.3 | 0.7 | <1 | <0.1 | 5.3 | 0.72 | 2.0 | <0.07 | <0.08 | 0.28 | <0.1 | <0.08 | <0.1 |
Performance
| Item | Bulk density | |
|---|---|---|
| R | H | |
| Flexural strength (Thickness direction) |
0.63MPa | 0.99MPa |
| Compressive stress (Thickness direction) |
0.13MPa | 0.18MPa |
| Coefficient of thermal expansion | 1.6×10-6/K | 1.8×10-6/K |
| Moisture content | <0.007 mass% | |
| Tensile strength | 0.04Mpa | 0.06Mpa |
