Normal temperature nano-composite getter

A nano-composite and getter technology, applied in the fields of alkali metal compounds, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of endangering human health, not being environmentally friendly, and not being able to heat at high temperatures, so as to improve chemical activity , the effect of improving the adsorption efficiency

Pending Publication Date: 2019-04-30
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to solve the problems of potential safety hazards, non-environmental protection, harm to human health, and inability to meet the requirements of the getter for VIP in the prior art; Development of dedicated getters for conditions such as high-temperature heating

Method used

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  • Normal temperature nano-composite getter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 100g of calcium oxide powder with a purity greater than 95% and a fineness of 325 meshes, then weigh 0.2g of copper nitrate powder, 0.5g of titanium dioxide powder, 1.5g of cerium nitrate powder and 0.02g of palladium nitrate powder, and pour them all into 400ml In a beaker, add 300ml of deionized water, then stir with a magnetic stirrer for 30min; pour the mixture into an alumina crucible, and dry it in an oven at a baking temperature of 130°C for a baking time of more than 100h, then dry the The mixture is placed in a nitrogen-protected atmosphere furnace for calcination, the calcination temperature is 600° C., and the time is 2 hours. The resulting product is pulverized with a pulverizer under the nitrogen atmosphere to obtain the nanocomposite getter powder of the present invention (number 1#), Wherein, in the finished product, the weight ratio of each component is calcium oxide: copper oxide: titanium dioxide: cerium oxide: palladium oxide = 100: 0.07: 0.5: 0....

Embodiment 2

[0033] Weigh 50g of calcium oxide powder with a purity greater than 95% and a fineness of 500 meshes, then weigh 0.3g of copper nitrate powder, 0.5g of titanium dioxide powder, 1.26g of cerium nitrate powder and 0.0055g of palladium nitrate powder, and pour them all into 250ml In a beaker, add 150ml of deionized water, and then stir with a magnetic stirrer for 25min; pour the mixture into an alumina crucible, and dry it in an oven at a baking temperature of 130°C for a baking time of more than 100h, and then put the dried The mixture is placed in an argon-protected atmosphere furnace for calcination, the calcination temperature is 600°C, and the time is 2h. The obtained product is pulverized with a pulverizer under the protection of argon atmosphere to obtain the nanocomposite getter powder of the present invention. Among the finished products, , the weight ratio of each component is calcium oxide: copper oxide: titanium dioxide: cerium oxide: palladium oxide = 100: 0.2: 1: 1: ...

Embodiment 3

[0035] Weigh 100g of calcium oxide powder with a purity greater than 95% and a fineness of 500 meshes, then weigh 0.182g of cobalt nitrate powder, 0.5g of titanium dioxide powder, 1.26g of cerium nitrate powder and 0.01g of palladium nitrate powder, and pour them all into 400ml In a beaker, add 300ml of deionized water, then stir with a magnetic stirrer for 30min; pour the mixture into an alumina crucible, and dry it in an oven at a baking temperature of 130°C for a baking time of more than 100h, then dry the The mixture is placed in an air atmosphere furnace for calcination, the calcination temperature is 600°C, and the time is 2h. The obtained product is pulverized with a pulverizer under the protection of an argon atmosphere to obtain the nanocomposite getter powder of the present invention. Among them, in the finished product, each group The weight ratio of the components is calcium oxide: cobalt oxide: titanium dioxide: cerium oxide: palladium oxide = 100: 0.1: 0.5: 0.5: 0...

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Abstract

The invention relates to a normal temperature nano-composite getter for a vacuum insulation plate. The normal temperature nano-composite getter comprises a mixture of an alkaline earth metal oxide, atransition metal oxide and a rare earth metal oxide, the alkaline earth metal oxide is calcium oxide, the transition metal oxide is a mixture of palladium oxide, titanium dioxide and at least one metal oxide of copper, cobalt and nickel, and the rare earth metal oxide is cerium oxide; and the normal temperature nano-composite getter is obtained by sealed packaging of the uniform mixture of the three oxides in a breathable polymer bag in the form of a powder. The getter has the advantages of no high temperature activation, convenience in use, low price and excellent performances, and can efficiently adsorb residual gas in the vacuum insulation plate at normal temperature to maintain the good vacuum environment in the plate and prolong the service life.

Description

technical field [0001] The invention belongs to the technical field of vacuum heat insulation, and in particular relates to a normal-temperature nanocomposite getter. Background technique [0002] With the continuous development of the global industrialization process and the massive consumption of fossil energy, on the one hand, we are facing an energy crisis, and on the other hand, the problem of environmental pollution is becoming more and more serious. Vacuum insulation panel (Vacuum Insulation Panel, referred to as VIP), as a new type of super insulation material, its thermal conductivity is as low as 0.002-0.004W / mK, which is 1 / 10 of the thermal conductivity of traditional thermal insulation materials, and its thickness is only 1 / 1 of that of traditional thermal insulation materials. / 7-1 / 10, so as to achieve the purpose of heat preservation, energy saving and space saving. It has been widely used in areas with high heat preservation requirements such as refrigerators ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28
CPCB01J20/041B01J20/06B01J20/2805
Inventor 邸小波张建军刘蒙蒙郑澍奎
Owner XIHUA UNIV
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