Preparation method for high-thermal-conductivity 5A molecular sieve composite material with isolation structure
A composite material, isolation structure technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problem of long adsorption and desorption cycle, low thermal conductivity, poor heat transfer effect, etc. problems, to achieve the effect of easy heat transfer in time, high thermal conductivity, and easy implementation
Inactive Publication Date: 2018-11-30
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology
In recent years, 5A molecular sieves have been widely used in the hydrogen isotope separation process. However, its low thermal conductivity leads to poor heat transfer in the separation process, long adsorption and desorption cycles, high energy consumption, and low separation efficiency.
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[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.
[0021] The purpose of this embodiment is to provide a method for preparing a composite material to prepare a high thermal conductivity 5A molecular sieve composite material with an isolation structure. The preparation method includes the following steps:
[0022] (1) Retrieving materials: According to the following weight percentage raw materials: 70%~95% particle size is 80~120 mesh 5A molecular sieve, 5%~30% heat conduction filler after drying; wherein, heat conduction filler can choose boron nitride, Any one of natural graphite, carbon fiber, carbon nanotube, graphene;
[0023] (2) Preparation of composite powder: Stir and dry mix the raw materials, and after mixing evenly, add polyethylene glycol aqueous solution to it and continue to grind and mix for 25-35 m...
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Abstract
The invention discloses a high-thermal-conductivity 5A molecular sieve composite material with an isolation structure and a preparation method thereof. The 5A molecular sieve composite material comprises the following main raw materials, by weight, 70% to 95% of a 5A molecular sieve and 5% to 30% of a thermally-conductive filler. The preparation method comprises the following steps: (1) weighing of the raw materials; (2) preparation of composite powder; (3) compression molding; and (4) roasting. According to the invention, the 5A molecular sieve is utilized a as a matrix, and the isolation structure is constructed through selective distribution of the thermally-conductive filler on the surface of the 5A molecular sieve, so the composite material with high thermal conductivity is obtained.The final composite material is prepared only through powder mixing, compression molding and roasting, so preparation process is simple and is easy to master and can be easily industrialized. The composite material can be applied to the separation of hydrogen isotopes to reduce the energy consumption of the separation process and save energy.
Description
technical field [0001] The invention relates to a molecular sieve composite material, in particular to a preparation method of a high thermal conductivity 5A molecular sieve composite material with an isolation structure. Background technique [0002] With the rapid development of social economy, the energy crisis and environmental pollution are becoming more and more severe, and it is urgent to seek sustainable, economical and safe new energy sources. Controlled fusion thermonuclear reaction process releases high energy and is environmentally friendly. It is a promising energy source and has gradually attracted people's attention. Deuterium and tritium are the main raw materials for thermonuclear fusion reactions. However, among the natural isotopes of hydrogen, the abundance of deuterium is only 156.25ppm; tritium is radioactive, and it is not easy to obtain, which is mainly realized by the separation of hydrogen isotopes. On the one hand, the heat generated in the hydro...
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Login to View More IPC IPC(8): B01J20/30B01J20/28B01J20/20
CPCB01J20/20B01J20/28011B01J20/3007B01J20/3078
Inventor 孙囡宋江锋姚勇文明李佩龙孙浩然罗德礼
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS