Method for improving oxidation resistance of active Ti/2B nano powder material

A nano-powder and anti-oxidation technology, which is applied in the field of improving the oxidation resistance of active Ti/2B nano-powder materials, can solve problems such as safety hazards, activity loss, etc., to prevent agglomeration, improve oxidation resistance, and improve the preparation process Effect

Active Publication Date: 2018-10-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for improving the oxidation resistance of active Ti/2B nano powder materials in order to solve the problems of activity loss and potential safety hazards caused by oxidation of active Ti/2B nano powder materials. First synthesize nano-scale Ti powder and B powder, disperse the active Ti/2B nano-powder by ball milling method, and then pre-polyme

Method used

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  • Method for improving oxidation resistance of active Ti/2B nano powder material

Examples

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Embodiment 1

[0030] A method for improving the oxidation resistance of active Ti / 2B nano powder material, the specific steps are as follows:

[0031] (1) Preparation of active Ti / 2B nanopowder

[0032] (1) Synthesis of elemental boron powder

[0033] Pass boron trichloride and magnesium powder through a 200-mesh sieve, weigh 350g of boron trichloride and 180g of magnesium powder, mix for 10 minutes, heat to 700°C, continue the reaction for 1 hour, rinse with 30% hydrochloric acid after cooling down, and then rinse with distilled water Rinse, filter and dry to obtain the product for use.

[0034] Add 95g of KBF 4 and 75g of KHF 2 Put the mixture into the above product, heat to 900°C for 1 hour, rinse with 30% hydrochloric acid after cooling down, then rinse with distilled water, filter and dry to obtain 28g of elemental boron powder.

[0035] (2) Preparation of nano boron powder

[0036] Under low temperature (lower than 20°C), drying, and under the protection of argon, pass the obtain...

Embodiment 2

[0046] A method for improving the oxidation resistance of active Ti / 2B nano powder material, the specific steps are as follows:

[0047] (1) Preparation of active Ti / 2B nanopowder

[0048] (1) Synthesis of elemental boron powder

[0049] After diboron trioxide and magnesium powder pass through 80 mesh sieve, weigh 100g of diboron trioxide and 180g of magnesium powder, mix for 10min, heat to 700°C, continue to react for 1h, rinse with 40% hydrochloric acid after cooling down, and then Rinse with distilled water, filter and dry to obtain the product for use.

[0050] Add 95g of KBF 4 and 75g of KHF 2 Put the mixture into the above product, heat to 900°C for 1 hour, rinse with 40% hydrochloric acid after cooling down, then rinse with distilled water, filter and dry to obtain 30g elemental boron powder.

[0051] (2) Preparation of nano boron powder

[0052] Under low temperature (less than 20°C), drying, and under the protection of argon, pass the elemental boron powder obtai...

Embodiment 3

[0062] A method for improving the oxidation resistance of active Ti / 2B nano powder material, the specific steps are as follows:

[0063] (1) Synthesis of elemental boron powder

[0064] Pass the diboron trioxide and magnesium powder through a 100-mesh sieve, weigh 100g of diboron trioxide and 180g of magnesium powder, mix for 10min, heat to 600°C, continue the reaction for 1h, rinse with 45% hydrochloric acid after cooling down, and then use distilled water Rinse, filter and dry.

[0065] Add 95g of KBF 4 and 75g of KHF 2 The mixture was heated to 800° C. for 1 hour, rinsed with 45% hydrochloric acid after cooling down, and then rinsed with distilled water, filtered and dried to obtain 27.5 g of elemental boron powder.

[0066] (2) Preparation of nano boron powder

[0067] Under low temperature (lower than 20°C), drying, and under the protection of argon, pass the obtained elemental boron powder through a 30-mesh sieve, use a high-energy nano-mill, adopt dry ball milling, ...

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Abstract

The invention relates to a method for improving oxidation resistance of an active Ti/2B nano powder material, and belongs to the technical field of surface treatment of nano energy-containing materials. In view of the oxidizing problem of active Ti/2B nanopowder, the active Ti/2B nanopowder is dispersed by a high temperature ball milling method in an absolutely dry and anaerobic environment underpure Ar gas, and then in-situ polymerization is carried out to form a thin polyurethane film on the surface of nanoparticles to coat the Ti/2B nano-powder particles, so that the Ti/2B nano-powder particles are separated from air to prevent further oxidation. The prepared active Ti/2B nano powder material has markedly-improved oxidation resistance. The thin polyurethane film is formed on the surface of the nanoparticles to coat the Ti/2B nano-powder particles to improve the oxidation resistance according to the preparation process. The prepared active Ti/2B nano-powder material is measured as follows: the weight gain of a sample is measured, and the reduction of measured oxide increment reaches 79%, and indicates that the oxidation resistance is remarkably improved.

Description

technical field [0001] The invention relates to a method for improving the oxidation resistance of active Ti / 2B nanometer powder materials, and belongs to the technical field of surface treatment of nanometer energetic materials. Background technique [0002] Nano-boron (B) powder is oxidized faster in an environment containing an oxidizing atmosphere. If there is moisture in the production and storage environment, the oxide layer on the surface of the boron powder and the water vapor in the environment will combine to form H 3 BO 3 . Existing research results have shown that the hindering effect of oxides in the ignition and combustion stages is the key factor restricting the wide application of boron in the field of energetic materials. Moreover, in the process of preparing energetic materials for casting, adding more nano-boron powder will cause the viscosity of the system to increase and the process to deteriorate. Therefore, attention should be paid to the storage of...

Claims

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Application Information

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IPC IPC(8): C06B27/00C01B35/02B82Y40/00
CPCB82Y40/00C01B35/023C06B27/00
Inventor 刘吉平刘晓波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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