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A kind of composite material and preparation method thereof

A technology of composite materials and loaded materials, applied in chemical instruments and methods, silicon compounds, other chemical processes, etc., can solve problems such as agglomeration of loaded materials

Active Publication Date: 2019-02-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the material is generally loaded on the porous support skeleton material by simple mixing or impregnation, and high-temperature calcination, which is prone to agglomeration of the loaded material. In order to overcome this problem, anti-caking agents and Dispersants improve the dispersion of loaded materials

Method used

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  • A kind of composite material and preparation method thereof
  • A kind of composite material and preparation method thereof
  • A kind of composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this embodiment, the load material is 24g of calcium chloride, the support frame material is 6g of expandable graphite, the solvent is 100ml of water, and the sugar is 6.16g of sucrose; heat at 700°C for 2 minutes in an oxygen-free environment to treat the expandable graphite as Expanded graphite; dissolve calcium chloride and sucrose in water at 50°C and stir evenly to obtain an impregnating solution; use the normal pressure equal volume impregnation method to impregnate graphite in the impregnating solution for 1 hour at a temperature of 55°C, and then form an impregnating material ; At 120°C, blow dry the impregnating material for 12 hours; at a temperature of 550°C, activate the impregnating material in a carbon dioxide atmosphere for 2.5 hours, then take it out and cool it to room temperature in a drying dish to obtain a powder composite material. The composite material can be used to adsorb methanol, ethanol, ammonia and water. The supporting framework of this ...

Embodiment 2

[0089] In this example, the load material is 24g of calcium chloride, the support frame material is 6g of expandable graphite, the solvent is 100ml of water, and the sugar is 12g of glucose; heat at 800°C for 2 minutes in an oxygen-free environment, and the expandable graphite is treated as expanded Graphite: Dissolve calcium chloride and sucrose in water at 50°C and stir evenly to obtain an impregnating solution; use an equal-volume impregnation method under normal pressure to impregnate graphite in the impregnating solution for 1 hour at a temperature of 55°C, and then form an impregnating material; At 120°C, blow dry the impregnating material for 12 hours; at 650°C, activate the impregnating material in a nitrogen atmosphere for 1.5h, then take it out and cool it to room temperature in a drying dish to obtain a powder composite material. The composite material can be used to adsorb methanol, ethanol, ammonia and water. The supporting framework of this type of composite mate...

Embodiment 3

[0091] In this embodiment, the load material is 60g lithium bromide, the supporting frame material is 50g copper foam, the solvent is 50ml water, and the sugar is 20g pullulan; the foam copper is cut into the required shape, and the oxide layer is removed; the lithium bromide and starch are dissolved In normal temperature water, and stir evenly to obtain impregnating liquid; adopt normal pressure excess impregnation method, impregnating temperature 80°C, this temperature makes starch gelatinization, soak foam copper in impregnating liquid for 1 hour, and then remove to form impregnating material; , ventilated and dried for 2 days; the impregnated material and the heat exchange wall surface were coated with brazing filler metal with a melting point of 350°C, and pressed tightly, and placed in a vacuum furnace for 1 hour at a temperature of 450°C, and the activation and vacuum brazing processes were completed at the same time to form a composite material- The heat exchanger is in...

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Abstract

The invention relates to a composite material and a preparation method thereof, which can be widely used in fields such as batteries, environmental protection, adsorption dehumidification, air conditioning, refrigeration, heat pumps, pressure-changing separation and purification, and hydrogen storage manufacturing. The composite material is composed of a supporting framework material, carbon microspheres and / or carbon membranes and load materials. The loading materials include salts, electrode materials and physical adsorbents. The carbon microspheres and / or carbon membranes are firmly attached to the pore walls of the supporting framework materials. The material is evenly distributed in the carbon microspheres and / or carbon film, which realizes the direct embedding of the loading material between the carbon atoms, the anti-agglomeration and deactivation ability is significantly enhanced, and the service life is effectively improved; the composite material breaks the ratio of the original skeleton material The surface area limitation can effectively increase the specific surface area of ​​the composite material under the premise of increasing the load capacity, and strengthen the adsorption, reaction or electron transfer rate; the composite material is convenient to achieve the adsorption between the adsorbent and the heat exchange wall by extrusion, bonding or brazing. The close contact can effectively reduce the contact thermal resistance between the two.

Description

technical field [0001] The invention belongs to the technical fields of battery, environmental protection, adsorption dehumidification, air conditioning, refrigeration, heat pump, pressure transformation separation and purification, and hydrogen storage, and in particular relates to a composite material and a preparation method thereof. Background technique [0002] Composite porous materials have many applications in adsorption, catalysis, environmental protection, batteries and other fields. Porous materials are used as substrates to support adsorbents, catalysts and battery electrode materials to form composite porous materials with good performance, improve the dispersion, utilization and activity of the loaded materials, delay their key performance decay, and at the same time enhance their heat and mass transfer and even Conductivity. At present, composite porous materials mostly adopt methods such as simple mixing or impregnation, and the process is relatively simple....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/16B01J20/22H01M4/36H01M4/583H01M4/62
CPCB01J20/02B01J20/16B01J20/226H01M4/362H01M4/583H01M4/625Y02E60/10
Inventor 赖艳华董震吕明新
Owner SHANDONG UNIV
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