Carbon fiber and its application products / Carbon Fiber Materials Business(DONACARBO)

DONACARBO Molded Insulator

DONACARBO Molded Insulator is a shaped heat insulator that is made from "pitch-based carbon fiber" as the base material impregnated with resin of high carbonization rate. We form this insulator into shapes according to purposes with curing, carbonizing, and graphitizing process. DONACARBO Molded Insulator is used in various industrial furnaces.

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.
Molded insulator Image
Molded insulator

Products and specifications

  DON-1000 DON-2000 DON-3000 DON-4000
Specifications Untreated Coated Graphite-sheeted Cloth-lining
Bulk density (g/cm3) Standard : 0.13, 0.16 (High density products are available on request.)
Standard dimensions W 1,000mm × L 1,500mm × [ T 30mm, T 40mm, T 50mm ]
Maximum size Flat Plate W 1,100mm × L 2,000mm × T 200mm (up to W 1,500mm)
Cylinder φ 1,700mm × H 1,000mm × T 150mm (up to T 200mm depending on request)
Disc φ 1,100mm × T 200mm (up to 1,500mm by interlocking with adhesive)

Impurities (measurement example)

Item Ash B Na Mg Al Si K Ca Ti V Cr Mn Fe Ni Cu
Measured value
(ppm)
25 0.6 < 0.05 < 0.02 0.17 0.8 0.1 1.7 9.9 1.4 < 0.07 < 0.08 0.68 < 0.10 < 0.08

Performance

Item 0.13g/cm3type 0.16g/cm3type
Flexural strength 0.63MPa 0.99MPa
Compressive strength 1.53MPa 1.69MPa
Tensile strength 0.04MPa 0.06MPa
Coefficient of thermal expansion 3.60×10-6/℃ 4.48×10-6/℃
Moisture content < 0.007%
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