Heat insulating material and equipment using the heat insulating material
A thermal insulation, carbon material technology, applied in heat exchange equipment, lighting and heating equipment, mechanical equipment and other directions, can solve the problem of low thermal conductivity, reduce heat transfer, prevent the effect of burning
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0153] In water glass (Tosoh Sangyo Co., Ltd.), add self-dispersing graphene oxide (Sigma-Aldrich, 4mg / ml in H 2 O) and water to prepare raw materials (SiO 2 Concentration 6%, graphene oxide GO concentration 0.1%). To 20.5 g of this dispersion liquid, 3.6 parts by weight (0.74 g) of concentrated hydrochloric acid was added as an acid catalyst, followed by stirring to prepare a sol solution.
[0154] Then, pass to non-woven fabric fiber 116 (material; Cellophane, thickness specification 600um, weight per unit area 100g / m 2 , size 12 cm square) into the sol solution so that the sol solution impregnates the non-woven fabric fibers 116 . The non-woven fiber 116 impregnated with the sol solution was sandwiched by a PP film (thickness 50um×2 pieces), and placed at room temperature 23° C. for 3 minutes to make the sol gel. After confirming the gelation, pass the film together with the impregnated non-woven fiber 116 through a biaxial roller with a gap set to 1.00 mm (including fil...
Embodiment 2
[0158] In water glass aqueous solution (Tosoh Industry Co., Ltd.), add self-dispersing graphene oxide (Sigma-Aldrich, 4mg / ml in H 2 O) and water to prepare raw materials (SiO 2 Concentration 6%, graphene oxide GO concentration 0.5%). Except that the concentration of graphene oxide was increased to 0.5%, a sheet was produced under the same process conditions as in Example 1.
[0159] As a result, heat insulating material 108 having an average thickness of 0.88 mm and a thermal conductivity of 0.020 W / mK was obtained. The filling rate of the silica xerogel 115 at this time was 44.6% by weight. V0 in the UL94 vertical burning test. In addition, as a result of DSC measurement, the thermal decomposition temperature (exothermic peak) of the organic modification group was 550° C. or higher, which was shifted to the high temperature side by 190° C. or higher than when the carbon material 114 was not added. In the cone calorimetry test, in the 20-minute non-combustible material tes...
Embodiment 3
[0161] In aqueous solution of water glass (Tosoh Sangyo Co., Ltd.), add self-dispersing carbon black (Tokai carbon, Aqua black 162 19.2wt% in H as carbon material 114) 2 O) and water to prepare raw materials (SiO 2 Concentration 6%, carbon black CB concentration 0.1%). To 20.5 g of this dispersion, 3.6 parts by weight (0.74 g) of concentrated hydrochloric acid was added as an acid catalyst, followed by stirring to prepare a sol solution. Sheets were produced under the same process conditions as in Example 1 except that the carbon material was changed to carbon black.
[0162] As a result, heat insulating material 108 having an average thickness of 0.88 mm and a thermal conductivity of 0.019 W / mK was obtained. The filling rate of the silica xerogel 115 at this time was 45.9% by weight. V0 in the UL94 vertical burning test. In addition, as a result of DSC measurement, the thermal decomposition temperature (exothermic peak) of the organic modification group was 550° C. or hig...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thermal decomposition temperature | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More