Polycrystalline Fiber

PCWs are a specialist fiber with limited applications when temperatures of over 2300F are encountered and RCF will not work. PCWs are made predominantly of aluminum (content typically 72-99% in the form of oxide) with the remainder consisting of silicon. The fibers are manufactured by sol-gel technology using gel extrusion, spinning and/or drawing in controlled air streams, using equipment/processes specifically designed to produce fibers of defined dimensions. These are then subjected to high-temperature treatment to produce the required polycrystalline structure.

BLANKET
pdf Denka Alcen Blankets are made from high alumina fibers using the sol-gel process. They are doubled needled for exceptional strength and flexibility for use in applications up to 2912°F (1600°C) in oxidizing, reducing and chemically aggressing atmospheres. Applications include: reheat furnace linings, galvanizing furnace linings, reducing atmosphere furnace linings, aluminum furnaces and high firing ceramics kiln linings.
Classification Temp (F) DATA SDS
DENKA ALCEN BLANKET NBK80, NBK95 2912 pdf pdf
BOARD
pdf Alphawool® VF board is a high temperature vacuum formed board made of polycrystalline bulk fibres and binders. It is rigid with very good dimensional resilience and has low shrinkage up to its classification temperature whilst retaining good thermal conductivity. Alphawool® VF board is resistant to thermal shock. Both the unfired and fired materials can be easily cut or machined. Typical applications include: expansion joints, furnace lining, electric kilns, laboratory equipment and glass & petrochemical industry.
Classification Temp (F) DATA SDS
ALPHAWOOL VF BOARD 2912 pdf pdf
BULK
pdf Denka Alcen Bulk fibers are high purity polycrystalline fibers designed for use in applications up to 2912°F (1600°C). They are produced by a unique sol-gel process which ensures the highest level of chemical purity, while minimizing shot content (un-fiberized material).
Classification Temp (F) DATA SDS
DENKA ALCEN BULK 2912 pdf pdf
MODULES
pdf Pyro-Stack modules are made from Denka blankets that are pre-compressed to a specific density and banded. Pyro-Stack modules are cut blanket segments stacked edge-grain rather than continuous folded. These modules come with the same internal hardware as traditionally offered in the Pyro-Bloc Y and M modules.
Classification Temp (F) DATA SDS
Denka Pyro-Stack Modules 2800 pdf pdf