A kind of preparation method of strontium chloroborate whisker

A technology of strontium chloroborate and whiskers, which is applied in the field of inorganic chemical material preparation, can solve problems such as the preparation of strontium chloroborate whiskers that have not yet been seen, and achieve the effects of rich varieties, high product purity, and easy industrial production.

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

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Embodiment 1

[0020] Embodiment 1 A kind of preparation method of strontium chloroborate whisker, comprises the following steps:

[0021] (1) Add 1.33g of strontium-containing raw material—strontium chloride (SrCl 2 ·6H 2 O), 0.62g boron-containing raw material -- boric acid (H 3 BO 3 ), 1.00 g of flux——potassium chloride (KCl) were mixed evenly and then ground to a particle size of less than 60 mesh to obtain a mixed raw material.

[0022] Wherein: the molar ratio of strontium in the strontium-containing raw material to boron in the boron-containing raw material is 1:2; the flux accounts for 50% of the total mass of the strontium-containing raw material and the boron-containing raw material.

[0023] (2) Put the mixed raw materials in a high-temperature furnace, raise the temperature to 650° C. at a heating rate of 5° C. / min, keep the temperature for 6 hours, and cool naturally to obtain a sintered product.

[0024] (3) Put the sintered product into deionized water, soak for 2 hours, f...

Embodiment 2

[0026] Embodiment 2 A kind of preparation method of strontium chloroborate whisker, comprises the following steps:

[0027] (1) Add 1.33g of strontium-containing raw material—strontium chloride (SrCl 2 ·6H 2 O), 0.70g boron-containing raw material - boron oxide (B 2 o 3 ), 2.03g of flux—sodium chloride (NaCl) are mixed evenly and then ground to a particle size of less than 60 mesh to obtain a mixed raw material.

[0028] Wherein: the molar ratio of strontium in the strontium-containing raw material to boron in the boron-containing raw material is 1:4; the flux accounts for 100% of the total mass of the strontium-containing raw material and the boron-containing raw material.

[0029] (2) Put the mixed raw materials in a high-temperature furnace, raise the temperature to 800° C. at a heating rate of 10° C. / min, keep the temperature for 15 hours, and cool naturally to obtain a sintered product.

[0030] (3) Put the sintered product into deionized water, soak for 12 hours, fil...

Embodiment 3

[0032] Embodiment 3 A kind of preparation method of strontium chloroborate whisker, comprises the following steps:

[0033] (1) Add 1.33g of strontium-containing raw material—strontium chloride (SrCl 2 ·6H 2 O), 2.38g boron-containing raw material——borax (Na 2 B 4 o 7 10H 2 (2), 7.42g flux—potassium chloride (KCl) are mixed evenly and ground to a particle size of less than 60 mesh to obtain a mixed raw material.

[0034] Wherein: the molar ratio of strontium in the strontium-containing raw material to boron in the boron-containing raw material is 1:5; the flux accounts for 200% of the total mass of the strontium-containing raw material and the boron-containing raw material.

[0035] (2) Put the mixed raw materials in a high-temperature furnace, raise the temperature to 750° C. at a heating rate of 8° C. / min, keep the temperature for 8 hours, and cool naturally to obtain a sintered product.

[0036] (3) Put the sintered product into deionized water, soak for 4 hours, filt...

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Abstract

The invention relates to a method for preparing strontium chloroborate whiskers. The method comprises the following steps: (1) uniformly mixing a strontium-containing raw material, a boron-containing raw material and a flux, and then grinding to a particle size of less than 60 mesh to obtain a mixed raw material; (2) ) placing the mixed raw materials in a high-temperature furnace, raising the temperature to 650-800° C. at a heating rate of 5-10° C./min, keeping the temperature for 6-15 hours, and cooling naturally to obtain a sintered product; (3) sintering the The product is put into deionized water, soaked for 2 to 15 hours, filtered and washed to obtain a white solid powder of the crude product; (4) drying the solid powder of the crude product to constant weight to obtain white strontium chloroborate crystals beard products. The invention has simple process and low cost, and the obtained strontium chloroborate whisker product has good microscopic appearance, high product purity and high yield.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic chemical materials, in particular to a method for preparing strontium chloroborate whiskers. Background technique [0002] Whisker is a kind of fibrous single crystal, the cross section is almost the same, the internal and external structure is highly complete, the aspect ratio is more than 5 to 1000, and the diameter is usually between 20nm and 100μm. The whisker strength is close to the theoretical value of a complete crystal, so it has excellent mechanical properties. As a reinforcing agent for emerging composite materials, it is mainly used in aerospace, machinery, automobile and other industries. According to the current literature, strontium chloroborate crystals are mainly used as light-emitting matrix materials, and Li Mei et al. (Li Mei et al., Sr 2 B 5 o 9 Determination of X-ray powder diffraction data of Cl luminescent material, Chinese Journal of Luminescence, 1987...

Claims

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Application Information

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IPC IPC(8): C30B9/12C30B29/22C30B29/62
Inventor 钱桂敏云山宋茜茜李武乃学瑛高丹丹
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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