Porous silica composite material for thermal insulation
To obtain excellent insulation effect, heat insulating material should have the capacity to inhibit the solid heat transmission, convection and radiation. The porous silica composite material for thermal insulation of our co***ny has such capacity.
The lower density of the solid material, the lower heat conductivity it owns. To reduce material density, general heat insulating material turn to getting a lot of pores. Our material is the best one on this aspect. It has the factor of porosity above 90% £¬and the density as low as about one-quarter of water density.
In order to reduce convection heat transmission of gas in the pores, this material made by special process has average pore diameter between 50~60 nm, shorter than average molecular free path(70nm). As air can not flow in such small pores, it gets the aim of prohibiting convection.
On the other hand, as a millimeter thickness of this material contains over ten thousand reflection surfaces and refraction surfaces, this material has excellent capacity to inhibit the radiation.
Characteristics of porous silica composite material for thermal insulation:
(1) Excellent heat insulating property
(2) Excellent temperature resistance
(3) Exclusive anti-flame breakthrough property
(4) Good chemical stability
(5) Hydrophobicity in case of use below 300¡æ
(6) Low density
(7) Excellent mechanical properties
(8) Sound insulation and shock absorbing properties
(9) Environmental protection and non toxicity
Application of vacuum insulating material
(1) Building and indoor and outdoor decoration fields:
(2) Fire fighting filed:
(3) Protection of important facilities:
(4) Electrical heating appliances for household:
(5) Fire prevention and heat insulation of plane and ship:
(6) Mechanical, electronic and portable equipment:
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