Vokes® NPS (Nanoporous insulation felt)

Characteristics 

Vokes® NPS is an evacuated micro porous thermal

insulating panel with excellent insulating properties.

Vokes® NPS

The core material

of Vokes® NPS is fumed Silica board and

noncombustible. It is sealed into a high gas barrier film

under vacuum.

Vokes® NPS 

Application 

Vokes® NPS is specially developed for insulation

applications where not much space is available but a

high thermal resistance is necessary. Mainly used in

high-temperature insulation Mainly used in hightemperature

insulation.

Vokes® NPS 

Vokes® NPS is a successful insulation element in the following areas:

• Industrial equipment insulation 

• High temperature boiler insulation 

• Thermal packaging (Medicine transport boxes, etc.)

• Appliance (Water boiler, etc.)

• Automotive (train, ship, air plains, etc.)

Advantage 

• Insulation : Long-term application temperature reached -120℃-1200℃. Insulation at normal

temperature for 3-5 times the performance of traditional materials. Stable thermal conductivity at high

temperatures, Temperature at 300 ℃ insulation performance is 4-8 times that of traditional materials.

• Drastically reduced insulation thickness 

• Thermal resistance ：Particles constituting unit having a three-dimensional network structure,

will form many nanoporosity avoid sintering deformation.

• All purpose VIP with a long service life 

•Corrosion resistant ：Products made of an inorganic material, no soluble chloride ions, No

corrosion on equipment, pipe grassroots.

• Soundproofing/Seismic Performance ：Acoustic noise reduction, buffer shock.

• Waterproof ：Product nanoparticles themselves with super hydrophobic properties.

Product data 

Surface color whiter 

Geometry

Rectangular shape (without protruding

flanges*)

Density  ≤300kg/m³

Thermal conductivity （Surface

temperature：℃）

50 0.016W/(m·k)

200 0.020W/(m·k)

300 0.023W/(m·k)

400 0.025W/(m·k)

500 0.033W/(m·k)

600 0.040W/(m·k)

700 0.050W/(m·k)

800 0.060W/(m·k)

Refractoriness  ＞800℃

cold crushing strength 

(Compression 20%) ≥0.40MPa

permanent change in dimension on heating

（800℃×24h） ≤1.0%

Standard dimension (L x W)(mm) 250x600/500x600/1200x600

Thickness 

10mm/15 mm/20

mm/25mm/30mm/40mm/50mm

Size tolerance 

• 0 to 500 mm ±2 mm

Thickness tolerance  ± 1 mm

Service life : extrapolated, depending on application up to 50.