Lightweight diatom based ultrahigh temperature insulation board and preparation technology thereof
A diatom-based, ultra-high temperature technology, applied in the field of thermal insulation materials, can solve the problems of short product life, high outsourcing price, poor basic performance, etc., and achieve the effect of reducing load, low price and light weight
Inactive Publication Date: 2014-06-04
王德春
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Problems solved by technology
[0004] In order to solve the short-term short-term thermal insulation materials and finished products of aerospace vehicles, which have poor basic performance, high outsourcing price, low service efficiency and short product life, the present invention provides a high-temperature-resistant, low-ablation and long-term thermal insulation, The temperature difference is large; it is not only a lightweight heat insulation material but also has strong impact resistance, the production process is simplified, and the cost is low; and energy saving and emission reduction, making full use of low-grade resources to produce ultra-high temperature short-term heat insulation protection materials and the preparation and processing technology of their plates
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[0026] Below in conjunction with example the present invention is further described:
[0027] 1. Preparation of diatomite concentrate
[0028] 1.1 Selection of raw materials: Take 10.5kg of tertiary diatomite, and the physical and chemical indicators of the raw materials are measured in the early stage of application, as shown in Table 1.
[0029] Name content% Name content% Name content% SiO2 63.76 CaO 0.96 NaO 1.21 Al2O3 16.38 MgO 1.17 TiO2 1.03 Fe2O3 5.82 K2O 1.21 MnO 0.04 P2O5 0.16 SO3 0.008 Loss on ignition 5.80
[0030] 1.2 Manually detect coarse sand blocks, tree roots, branches and other sundries.
[0031] 1.3 Put the original soil obtained in 1.1 and 1.2 on a 400mm×400mm×8mm iron plate; and place a 1000W / 220v resistance electric furnace under the iron plate, with a vertical height of 100mm from the iron plate.
[0032] 1.4 Send electricity to the electric stove and bake the orig...
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The invention discloses a method for preparing a lightweight diatom based ultrahigh temperature insulation board with diatomite as a basic raw material. The insulation board is prepared by the following raw materials by weight percent: 60-95% of diatomite, 5-30% of liquid sodium silicate, and 0-20% of other auxiliary reinforcing rib aggregate, and is prepared through mixing uniformly and pouring, and solidifying and molding at room temperature. When the insulation board is 11-25mm thick, one side of the board is heated and reaches the surface temperature of over 1200DEG C, and the back temperature of the other side of the board is lower than 100DEG C in 7 minutes. The preparation technology of the insulation board uses cheap raw materials easy to obtain, is simple and is safe in production; the prepared product has low heat conductivity coefficient, good high temperature thermal insulation performance, light weight, and long service life, is corrosion resistant and wear resistant, is fireproofing, and is a new material which is energy-saving and environment-friendly, can substitute for steel and plastic, and has superstrong comprehensive property.
Description
technical field [0001] The invention relates to a heat insulation material, in particular to a material used for an ultra-high temperature heat insulation board of a spacecraft and a preparation process thereof. [0002] Background technique [0003] Lightweight ultra-high temperature insulation materials are mainly used in returnable satellites and manned spacecraft. It is the core material to ensure the overall safety of the aircraft and astronauts under various mechanical environments and space environmental conditions. It is in the form of a basic flat plate, curved plate or other special-shaped body, and is bonded to the outer surface of the metal load-bearing structure with an adhesive to provide thermal protection for the metal surface or structure, and to block the aerodynamic force of the aircraft during its return to low-Earth orbit. Heating to reduce the temperature of the metal structure, especially the manned cabin, to a tolerable range. At present, the devel...
Claims
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IPC IPC(8): C04B28/26C04B14/08
Inventor 王德春
Owner 王德春