A kind of preparation method of barium chloroborate whisker

A barium chloroborate and whisker technology, which is applied in the field of preparation of barium chloroborate whiskers, can solve the problems of preparation and performance of barium chloroborate whiskers that have not been seen yet, and achieve a rich variety, complete crystal structure and high yield. Effect

Inactive Publication Date: 2011-12-28
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no reports on the preparation and performance of barium chloroborate whiskers

Method used

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  • A kind of preparation method of barium chloroborate whisker
  • A kind of preparation method of barium chloroborate whisker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 A kind of preparation method of barium chloroborate whisker, comprises the following steps:

[0020] (1) 6.11g barium-containing compound——BaCl 2 2H 2 O, 5.96g boron-containing compound——Na 2 B 4 o 7 10H 2 O and 12.07g of flux——KCl were mixed evenly and then ground to a particle size of less than 60 mesh to obtain a mixture.

[0021] The molar ratio of Ba in the barium-containing compound to B in the boron-containing compound is 1:2.5, and the mass ratio of the sum of the total mass of the barium-containing compound and the boron-containing compound to the flux is 1:1.

[0022] (2) Put the mixture in a corundum crucible, put it into a high-temperature furnace, raise the temperature to 690°C at a heating rate of 5-10°C / min, heat at a constant temperature for 4 hours, and cool naturally to room temperature to obtain a sintered product.

[0023] (3) Put the sintered material into deionized water, soak for 2 to 6 hours, filter, wash with deionized water, ...

Embodiment 2

[0024] Embodiment 2 A kind of preparation method of barium chloroborate whisker, comprises the following steps:

[0025] (1) 6.31g barium-containing compound—Ba(OH) 2 ·8H 2 O, 4.95g boron-containing compound——H 3 BO 3 Mix with 39.41g of flux—NaCl and grind until the particle size is less than 60 mesh to obtain a mixture.

[0026] The molar ratio of Ba in the barium-containing compound to B in the boron-containing compound is 1:4, and the mass ratio of the sum of the total mass of the barium-containing compound and the boron-containing compound to the flux is 1:3.5.

[0027] (2) Put the mixture in a corundum crucible, put it into a high-temperature furnace, raise the temperature to 750°C at a heating rate of 5-10°C / min, heat at a constant temperature for 15 hours, and cool naturally to room temperature to obtain a sintered product.

[0028] (3) Put the sintered material into deionized water, soak for 2 to 6 hours, filter, wash with deionized water, and dry at 100 to 200°C t...

Embodiment 3

[0029] Embodiment 3 A kind of preparation method of barium chloroborate whisker, comprises the following steps:

[0030] (1) 5.23g barium-containing compound—Ba(NO 3 ) 2 2H 2 O, 5.72g boron-containing compound——Na 2 B 4 o 7 10H 2 O and 27.38g of flux——KCl were mixed evenly and then ground to a particle size of less than 60 mesh to obtain a mixture.

[0031] The molar ratio of Ba in the barium-containing compound to B in the boron-containing compound is 1:3, and the mass ratio of the sum of the total mass of the barium-containing compound and the boron-containing compound to the flux is 1:2.5.

[0032] (2) Put the mixture in a corundum crucible, put it into a high-temperature furnace, raise the temperature to 720°C at a heating rate of 5-10°C / min, heat at a constant temperature for 8 hours, and cool naturally to room temperature to obtain a sintered product.

[0033] (3) Put the sintered material into deionized water, soak for 2 to 6 hours, filter, wash with deionized wa...

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Abstract

The present invention relates to a method for preparing barium chloroborate whiskers. The method comprises the following steps: (1) mixing a barium-containing compound, a boron-containing compound and a fluxing agent uniformly and then grinding to a particle size of less than 60 meshes to obtain a mixture; (2) The mixture is placed in a high-temperature furnace, heated to a temperature of 690-750°C at a heating rate of 5-10°C/min, heated at a constant temperature for 4-15 hours, and then cooled to room temperature naturally to obtain a sintered product; (3) the The sintered product is put into deionized water, soaked for 2-6 hours, filtered, washed and dried in sequence to obtain white powdery barium chloroborate crystal whiskers. The invention has simple process and low cost, and the obtained barium chloroborate crystal whisker has high purity and complete crystal structure.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic chemical materials, in particular to a preparation method of barium chloroborate whiskers. Background technique [0002] Whiskers refer to a fiber material with a certain length-to-diameter ratio (5-1000) grown in the form of a single crystal. Its diameter is very small, it contains few lattice defects, its atoms are highly ordered, and its strength is close to that of a complete crystal. Theoretical value, when used as a modified reinforcement material for plastics, metals, ceramics, etc., it shows excellent mechanical properties. Barium chloroborate (Ba 2 B 5 o 9 Cl) crystal has good nonlinear optical properties, P.Held etc. (P.Held, J.Liebertz, L.Bohaty.Crystal structure of dibarium pentaborate chloride, Ba 2 B 5 o 9 Cl, Z.Kristallogr.NCS 217 (2002) 463-464) reported Ba 2 B 5 o 9 The structure of Cl crystal points out that the crystal belongs to the orthorhombic crysta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B9/12C30B29/62C30B29/10
Inventor 李武朱东海乃学瑛卢会刚刘鑫宋爽洁朱成财
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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