Energetic compound sensitizer for emulsified explosive and preparation method of energetic compound sensitizer

A technology of emulsion explosives and sensitizers, applied in the field of sensitizers, can solve the problems of metal powder storage stability explosives safety, reduce the explosive power of emulsion explosives, reduce the safety of emulsion explosives, etc., to improve storage stability, The effect of increasing charge density and reducing sensitivity

Active Publication Date: 2017-05-31
ANHUI UNIV OF SCI & TECH
View PDF11 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also two major problems with high-energy metal powders as energetic additives: the storage stability of the metal powder itself and the safety of the explosives after adding emulsion explosives
However, due to the weak acidity of the emulsification matrix and the large amount of organic matter in the oil phase, the MgH 2 The powder coating materials paraffin and stearic acid are easily soluble in the emulsification matrix, which affects its coating effect, which in turn leads to MgH 2 The hydrolysis of the powder reduces the safety of the emulsion explosive; and, the glass microspheres in this method and the coated MgH 2 The powder is added to the emulsion explosive as a sensitizer and an energetic additive, glass microspheres and MgH 2 It is difficult for the powder to be evenly distributed in the matrix, and during the stirring process, the glass microspheres are easily crushed and broken by friction with the metal powder, which affects the sensitization effect and reduces the explosive power of the emulsion explosive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energetic compound sensitizer for emulsified explosive and preparation method of energetic compound sensitizer
  • Energetic compound sensitizer for emulsified explosive and preparation method of energetic compound sensitizer
  • Energetic compound sensitizer for emulsified explosive and preparation method of energetic compound sensitizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]The energy-containing composite sensitizer containing aluminum powder: the mass ratio of aluminum powder in the energy-containing sensitizer is 58%, the mass ratio of coating agent paraffin is 5%, and the mass ratio of silicon dioxide is 37%.

[0035] The preparation method of the composite energy-containing sensitizer containing aluminum powder, the specific method steps are as follows:

[0036] St1: Preparation of modified aluminum powder: first dissolve paraffin in gasoline at room temperature, then add aluminum powder, mix and stir evenly, and dry in a vacuum drying box filled with argon to obtain modified aluminum powder, The particle size of the aluminum powder is 40 μm, the purity is greater than 99%, and the temperature of the vacuum drying oven is controlled at room temperature-80°C.

[0037] St2: Melamine formaldehyde resin coating: adopt in-situ polymerization method, mix 12 parts of melamine and 37% formaldehyde solution (containing 10 parts of formaldehyde),...

Embodiment 2

[0041] The energy-containing composite sensitizer containing magnesium powder: the mass ratio of magnesium powder in the energy-containing sensitizer is 61%, the mass ratio of coating agent fluororubber is 6%, and the mass ratio of silica is 33%.

[0042] The preparation method of the composite energy-containing sensitizer containing magnesium powder, the specific method steps are as follows:

[0043] St1: Preparation of modified magnesium powder: First dissolve fluororubber in ethyl acetate at room temperature, then add magnesium powder, mix and stir evenly, and dry in a vacuum drying box filled with argon to obtain modified magnesium powder. Magnesium powder, the particle size of the magnesium powder is 48 μm, the purity is greater than 99%, and the temperature of the vacuum drying oven is controlled at room temperature-80°C.

[0044] St2: melamine formaldehyde resin coating: adopt the in-situ polymerization method, mix 14 parts of melamine and 37% formaldehyde solution (con...

Embodiment 3

[0048] Energy-containing composite sensitizer containing titanium powder: the mass ratio of titanium powder in the energy-containing sensitizer is 55%, the mass ratio of coating agent stearic acid is 6%, and the mass ratio of silicon dioxide is 39% .

[0049] The preparation method of the composite energy-containing sensitizer containing titanium powder, the specific method steps are as follows:

[0050] St1: Preparation of modified titanium powder: first dissolve stearic acid in alcohol at room temperature, then add titanium powder, mix and stir evenly, and dry in a vacuum drying box filled with argon to obtain modified titanium The particle size of the titanium powder is 45 μm, the purity is greater than 99%, and the temperature of the vacuum drying oven is controlled at room temperature-80°C.

[0051] St2: melamine formaldehyde resin coating: adopt the in-situ polymerization method, mix 15 parts of melamine and 37% formaldehyde solution (containing 12 parts of formaldehyde...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a sensitizer, specifically an emulsified explosive energetic sensitizer, and particularly relates to a sensitizer formed by coating high-energy metal powder on porous silicon dioxide hollow microspheres and a preparation method of the sensitizer. The sensitizer mainly comprises the following components in parts by weight: 50-65 parts of a metal powder, 2-10 parts of a coating agent, and 30-45 parts of silicon dioxide. According to the preparation method provided by the invention, the high-energy metal powder for coating the porous silicon dioxide hollow microspheres is prepared through a four-step method, and is added into an emulsion matrix, and the high-energy metal powder and the emulsion matrix are mixed uniformly to prepare a high-strength emulsion explosive; shells of the porous silicon dioxide hollow microsphere of the energetic sensitizer achieve the effect of a sensitizer, and the high-energy metal powder inside the energetic sensitizer achieves the effect of an energetic additive. The sensitizer and the high-energy metal powder are combined into a whole body, the brisance of the emulsified explosive is improved under the condition that the sensitivity of the explosive is not influenced; moreover, the raw materials are wide in source, the cost is low, and the production process is simple, so that the sensitizer has a very good market prospect.

Description

technical field [0001] The present invention relates to a kind of sensitizer, more particularly, to a composite sensitizer containing energy for emulsion explosives, in particular to a kind of high-energy metal powder coated with porous silica hollow microspheres as a sensitizer and a preparation method thereof. Background technique [0002] Emulsion explosive is a water-in-oil type water-containing industrial explosive developed in the late 1960s. Emulsion explosives have excellent water resistance, safety, explosion, storage performance and detonator initiation sensitivity, as well as good characteristics that meet environmental protection requirements, and have been widely used in engineering blasting. The main components of an emulsion explosive are an emulsion matrix and a sensitizer. The emulsion matrix itself has no detonator sensitivity, and it must be sensitized by a sensitizer before it can be detonated. The function of the sensitizer is to introduce sensitized sm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00
CPCC06B23/004
Inventor 程扬帆刘蓉王永胜张涛张增曹俊周淑清程尧
Owner ANHUI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap