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: 2018-05-29
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...

Method used

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  • Composite material and preparation method thereof
  • Composite material and preparation method thereof
  • 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, and can be widely applied to the fields of batteries, environmental protection, adsorptive dehumidification, air conditioning, refrigeration, heat pumps, pressure-variable separation purification, hydrogen storage production and the like. The composite material comprises a supporting framework material, carbon microspheres and/or a carbon film and a loading material, the loading material comprises salt, an electrode material and a physical adsorbent, the carbon microspheres and/or the carbon film are/is firmly attached to the wall surfaces of pores in the supporting framework material, and the loading material is uniformly distributed inside the carbon microspheres and/or the carbon film, so that direct embedment of the loading material between carbon atoms is achieved, the anti-agglomeration inactivation capacity is obviously enhanced, and the service life is effectively prolonged; the composite material breaks through a limitation of the specific surface area of the original skeleton material, so that the specific surface area of the composite material can be effectively increased under the premise ofincreasing the loading capacity, and the adsorption, reaction or electron migration rate can be increased; the composite material conveniently achieves close contact between the adsorbent and a heat-exchanging wall surface by an extruding, bonding or brazing method, so that the contact heat resistance between the two is effectively reduced.

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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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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