Emulsifier for powdered emulsified explosive and its prepn process

A technology of powdery emulsion explosives and emulsifiers, which is applied to non-explosive/non-thermal agent components, explosives, offensive equipment, etc., and can solve the problems of being unsuitable for the production of powdery emulsion explosives, suitable for powdery emulsion explosives, and soft emulsion matrix , to achieve good storage stability, improve storage stability, and smooth emulsification conditions

Active Publication Date: 2005-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molecular structure of the emulsifier is designed for the emulsified explosive process. Its hydrophilic group is an ester structure without nitrogen and amide groups. Compared with succinimide, the emulsifying performance is greatly improved, but the prepared emulsifying The matrix is ​​soft and difficult to powder, so it is not suitable for the production of powdery emulsion explosives
The water-based drilling fluid disclosed in WO96 / 40835 involves an emulsifier, which includes a reaction product of a polyhydrocarbyl carboxylic acid or anhydride and an alcohol amine, but it is aimed at drilling fluids and cannot be most suitable for powdery emulsion explosives

Method used

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  • Emulsifier for powdered emulsified explosive and its prepn process

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Add 160g of polyisobutylene (Mn=1000) and 14g of maleic anhydride into the reaction kettle, heat to 110°C, start stirring and feed chlorine gas, slowly heat up to 200°C within 3 hours, stop feeding chlorine gas at the same time, and continue stirring After 1 hour, the prepared polyisobutylene maleic anhydride (alkenic anhydride) was used for the next reaction. Take 100g of alkene anhydride, 0.3g of monoethanolamine, 1.5g of diethanolamine and 1.2g of triethanolamine, add 0.5g of 30w% NaOH solution, and react for 4 hours at a temperature of 190°C and a pressure of -0.02MPa.

Embodiment 2

[0021] Prepare 100g of alkene anhydride according to the method of Example 1, add 4.5g of monoethanolamine, 6.0g of diethanolamine and 4.5g of triethanolamine, and add 1.0g of KOH solution with a concentration of 20w%, and react at a temperature of 150°C and a pressure of -0.04MPa. 6 hours.

Embodiment 3

[0023] Prepare 100g of alkene anhydride according to the method in Example 1, add 18g of monoethanolamine, 9g of diethanolamine and 3.0g of triethanolamine, and add 1.5g of KOH solution with a concentration of 20w%, and react for 1 hour at a temperature of 220°C and a pressure of -0.08MPa .

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Abstract

The present invention provides the preparation process of one kind of emulsifier for powdered emulsified explosive. The polymer emulsifier with excellent emulsifying performance and high emulsifying stability is prepared through the reaction between alkyl carboxylic acid or carboxylic anhydride and the mixture of several kinds of alcohol amine compounds. The powdered emulsified explosive prepared with the emulsifier has high explosion performance, high stability and long storing period.

Description

technical field [0001] The invention relates to an emulsifier for powdery emulsified explosives and a preparation method thereof. Background technique [0002] Powdery emulsion explosive is a new type of civil blasting explosive. It is made of oxidant aqueous solution as the dispersed phase and combustible oil phase as the continuous phase. It is prepared into a water-in-oil latex matrix through the action of an emulsifier, and then it is produced by a spray drying process. powdered explosives. It is a new type of emulsion explosive which not only has the characteristics of excellent explosive performance of emulsion explosive, does not contain TNT in components, and has certain water resistance, but also has the advantages of powder ammonium ladder explosive in stable storage and more flexible and convenient use. [0003] The water content in the formula of powdery emulsion explosive is about 4%, which is far lower than the water content of 10% to 14% in ordinary emulsion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00C06B45/00
Inventor 王德军张志银孟淑香张造根胡伟龙
Owner CHINA PETROLEUM & CHEM CORP
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