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Metal hydride polymer in-situ polymerization coating modification method

An in-situ polymerization and hydride technology, applied in chemical instruments and methods, non-metallic elements, hydrogen, etc., can solve the problems of reducing the energy characteristics of metal hydrides, not considering the influence of the coating layer, low stability, etc., to achieve good Isolation protection, excellent physical properties, and good stability

Inactive Publication Date: 2016-05-11
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, there are few reports of other polymer-coated metal hydrides
The main problem of the above method is that it focuses on isolation protection, and does not consider the influence of the coating layer on the performance of the metal hydride. Too thick and inappropriate coating layer may greatly reduce the energy characteristics of the metal hydride
Moreover, the stability of the coating layer formed by solvent evaporation and electrostatic molecular self-assembly in physical methods is much lower than that of the polymer coating layer formed by conventional chemical bonds.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 0.8g of dicyclopentadiene, 0.2g of cyclobutene, and 1mg of Grubbs first-generation catalyst into 10ml of ether, stir and dissolve, then add 9g of AlH 3 After stirring and dispersing, add the above mixture into 20ml of water, then add 0.01g of SDS, stir and disperse, react at room temperature for about 30 minutes, then stop stirring. After washing, filtering and drying, polydicyclopentadiene-cyclobutene-coated AlH 3 .

Embodiment 2

[0032] Add 0.5g of dicyclopentadiene, 0.5g of norbornene, 1mg of Grubbs first-generation catalyst, and 1mg of triphenylphosphine into 10ml of n-heptane. After fully stirring and dissolving, add 9g of LiAlH 4 After stirring and dispersing, the above mixture was added into 20ml of ethanol, and reacted at 50°C for about 1 hour under stirring. After washing, filtering and drying, the polydicyclopentadiene-norbornene copolymer-coated LiAlH 4 .

Embodiment 3

[0034] Add 1g of dicyclopentadiene, 0.1mg of Grubbs second-generation catalyst, and 0.1g of triphenylphosphine into 10ml of n-pentane. After fully stirring and dissolving, add 9g of NaBH 4 After stirring and dispersing, it was added to 20ml of ethanol, and heated at 50°C for about 1 hour under stirring. After washing, filtering and drying, polydicyclopentadiene-coated NaBH 4 .

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PUM

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Abstract

The present invention relates to a metal hydride polymer in-situ polymerization coating modification method, dicyclopentadiene (DCPD) and the like are used as polymer reactive monomers for formation of a poly dicyclopentadiene(DCPD) homopolymer or copolymer coating layer on metal hydride surface by in-situ polymerization, and metal hydride isolation protection can be achieved. The method has the characteristics of rapid response and coating layer stability, good role in isolation and protection can be played, a modified metal hydride can maintain excellent energy characteristics, and a good and stable performance product is provided for metal hydride application of in many fields.

Description

technical field [0001] The invention belongs to the technical field of metal hydrides, and in particular relates to a method for in-situ polymer coating modification of metal hydrides. The metal hydrides after coating and modification can be used in technical fields such as hydrogen storage materials and rocket propulsion. . Background technique [0002] Metal hydride (MH) is considered to be the most feasible way to utilize hydrogen energy because it has a hydrogen content of 5-15 wt% and a volume hydrogen density nearly twice that of liquid hydrogen, and is very suitable as a hydrogen storage material. Although most of the research reports on metal hydrides are used as hydrogen storage materials, in fact metal hydrides also have a wide range of uses in other fields, such as high-energy additives for rocket fuel, purification of hydrogen, and reducing agents in organic synthesis. , catalysts for addition polymerization, metal hydride heat pumps and compressors, etc. [00...

Claims

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Application Information

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IPC IPC(8): C01B3/00C06D5/00C08F232/08C08F232/04C08F132/08
CPCC01B3/001C06D5/00C08F132/08C08F232/08C08F232/04Y02E60/32
Inventor 韦伟靳海波金凤王亚陈克海邱贤平鲁统洁
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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