Pumica N
Pumica is the brand name for ceramically-bonded Vermiculite plates, dishes and shapes that has many applications. Pumica is a high-temperature insulation with high fire resistance.
Vermiculite is the basic material for Pumica. This light, incombustible insulation grain is exfoliated at high temperatures (about 900ºC) under controlled conditions. The product is mixed with various inorganic binding agents, pressed into the required shape and size and ceramically bonded in a furnace. This mica-like fire-resistant, acoustic and thermally insulating granular material is chemically neutral, does not contain asbestos or other fibres and is entirely environmentally friendly.
| Technical specifications of Pumica N | ||||
|---|---|---|---|---|
| Density* | 400 | 500 | 600 | 700 |
Thermal conductivity |
λ10 = 0,11 W/(mK) |
λ10 = 0,125 W/(mK) |
λ10 = 0,14 W/(mK) |
λ10 = 0,17 W/(mK) |
| Pressure strength | 0,8 N/mm2 | |||
| Bending strength | 0,2 N/mm2 | |||
| Specific heat capacity | C=838 J/kgK | C=838 J/kgK | C=838 J/kgK | C=838 J/kgK |
| Maximum operating temperature |
900 °C | 900 °C | 900 °C | 900 °C |
| Melting point | about 1315 °C | about 1315 °C | about. 1315 °C | about. 1315 °C |
| Smoke index (NEN 6066) | 0 | 0 | 0 | 0 |
| Burning behaviour (NEN 6064) | incombustible | incombustible | incombustible | incombustible |
Applications of Pumica N
The product can be used for various purposes, including covering for floor or roof beams, column covering, covering of suspenders, tie rods and round columns, but it can also be used as insulation in heaters, boilers or fireplaces, for example.
Finishing options for Pumica N
Pumica can be finished with one of the following attractive/chip-proof finishes: steel plate, blue plastering/ready to wallpaper, fine sanding or spack (spray), tiling, plywood/chipboard or technical/functional.
Pumica N delivery range
| Sizes | |
|---|---|
| Nominal width | 500/ 600 mm |
| Nominal length | 700/ 1000/ 1200 mm |
| Nominal thicknesses | 12/ 14/ 16/ 18/ 20/ 25/ 30/ 35/ 40 -100 mm |
| Other sizes are available on request. | |
| Sizes of dishes and shapes on request. | |
| Custom specifications possible. | |
Calculate insulation thickness
The required insulation thickness of Pumica N depends on the required fire-resistance in minutes, the permitted or calculated critical steel temperature as well as the ratio factor of the steel surface to the steel content (F/A factor). If required, we can calculate the required insulation thickness for you.
Test reports
TNO: B.83.674 of December 1983
IBMB: 3429/ 3681 of October 1992
Firto: TE 4846/ 6811 of February 1984
UL: R 13200 of April 1988