What is the thermal conductivity of foam?

Typical thermal conductivity values for polyurethane foams are between 0.022 and 0.035W/m∙K. In general, thermal insulation is primarily based on the very low thermal conductivity of gases.

What is polyimide foam used for?

Typical uses of the foam include ducting, duct/piping insulation, structural components, and strengthening of hollow components while remaining lightweight. In addition to thermal and acoustic properties, polyimide foam is fire resistant, lightweight and non-toxic.

What is polyimide insulation?

Polyimide insulation is fire resistant, lightweight, durable, and has a wide operating temperature range, remaining functional even when exposed to extreme temperatures. Polyimide insulation comes in foam panels & sheets in a variety of sizes and facings.

Why does foam have a low thermal conductivity?

For example, metals have higher thermal conductivity than wood, but insulating materials such as glass fibre or polyurethane have lower thermal conductivity….The importance of thermal conductivity in the insulation of buildings.

Material Thermal Conductivity
Expanded Polystyrene 0.031-0.050 W/mK

What is the lowest thermal conductivity?

Aerogel has the lowest thermal conductivity λ among solid materials: even if λ of the silica skeleton structure is relatively high (in the 1.3–1.4 W/mK range), the overall value is very low because of the high porosity, the low gas conductivity and the low radiative transmission in the infrared range up to a …

Is polyimide foam flammable?

Polyimide foam is utilized in commercial and industrial markets as a lightweight, non-flammable, thermal and acoustic insulation.

What is the meaning of polyimide?

Definition of polyimide : any of a class of polymeric synthetic resins resistant to high temperatures, wear, and corrosion and used especially for coatings and films.

What is the thermal conductivity of plastic?

Thermal Conductivity of Unfilled Plastics (W/mK) 1

Plastic Type Commercial Name Thermal Conductivity (W/mK
Polyethylene L Low density 0.33
Polyethylene HD High density 0.45 – 0.52
Polyimide Kapton 0.10 – 0.35
Polymethylmethacrylate PMMA, Acrylic, Perspex, Plexiglass 0.17 – 0.19

What is Kapton wire?

Kapton™ insulated wire is designed for use in high & ultra-high vacuum applications. Kapton™ has high mechanical strength, excellent electrical insulation properties, and low outgassing rates making it ideal for use as an in-vacuum insulator.