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Emulsion explosive emulsifier and preparation method thereof

A technology for emulsifying explosives and emulsifiers, which is applied to non-explosive/non-thermal agent components, explosives, offensive equipment, etc., can solve the problems of weak emulsion forming ability and poor effect, and achieves low dosage, simple preparation process, and reduced production costs. Effect

Active Publication Date: 2019-09-20
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this emulsifier improves the storage stability of the emulsion explosive to a certain extent, its emulsification ability is weak, and the effect of using it alone is relatively poor.

Method used

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  • Emulsion explosive emulsifier and preparation method thereof
  • Emulsion explosive emulsifier and preparation method thereof
  • Emulsion explosive emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put 1.5 mol of rosin (the acid value of rosin is 160 mgKOH / g) into the reaction kettle, heat to 160°C, add 1 mol of maleic anhydride, heat up to 200°C and react for 5 hours to obtain maleic rosin.

[0020] Put 1 mol of polyisobutylene succinic anhydride (molecular weight: 1000) into the reactor, raise the temperature to 150°C, add 1 mol of maleic rosin, and stir for 3 hours. Add 0.5 mol of triethanolamine, raise the temperature to 170°C and react for 10 hours to obtain emulsifier 1 (the molar ratio of maleic rosin and polyisobutylene succinic anhydride is 1:1).

Embodiment 2

[0022] Put 1.5 mol of rosin (the acid value of rosin is 160 mgKOH / g) into the reaction kettle, heat to 160°C, add 1 mol of maleic anhydride, heat up to 200°C and react for 5 hours to obtain maleic rosin.

[0023] Put 1 mol of polyisobutylene succinic anhydride (molecular weight: 1000) into the reactor, raise the temperature to 150°C, add 0.25 mol of maleic rosin, and stir for 3 hours. Add 0.5 mol of triethanolamine, raise the temperature to 170°C and react for 10 hours to obtain emulsifier 2 (the molar ratio of maleated rosin and polyisobutylene succinic anhydride is 4:1).

Embodiment 3

[0025] Put 1.5 mol of rosin (the acid value of rosin is 160 mgKOH / g) into the reaction kettle, heat to 160°C, add 1 mol of maleic anhydride, heat up to 200°C and react for 5 hours to obtain maleic rosin.

[0026] Put 1 mol of polyisobutylene succinic anhydride (molecular weight: 1000) into the reactor, raise the temperature to 150°C, add 0.5 mol of maleic rosin, and stir for 3 hours. Add 0.5 mol of triethanolamine, raise the temperature to 170°C and react for 10 hours to obtain emulsifier 3 (the molar ratio of maleic rosin and polyisobutylene succinic anhydride is 2:1).

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Abstract

The invention discloses an emulsion explosive emulsifier and a preparation method thereof. The emulsion explosive emulsifier is prepared by taking polyisobutenyl succinic anhydride and maleated rosin as hydrophobic chains to react with one or more hydramines or polyhydric alcohols. The preparation method specifically comprises heating the polyisobutenyl succinic anhydride to 140-150 DEG C, stirring in the maleated rosin for 3-4 h, then adding in the hydramines or polyhydric alcohols, and increasing the temperature to 170-180 DEG C for reaction for 10-12 h to obtain the emulsion explosive emulsifier. Emulsion explosives prepared with the emulsion explosive emulsifier are high in explosion performance and storage stability.

Description

technical field [0001] The invention relates to an emulsifier for emulsion explosives and a preparation method thereof, belonging to the technical field of emulsion explosives. Background technique [0002] Emulsion explosives are obtained by dispersing supersaturated ammonium nitrate or ammonium nitrate and sodium nitrate, potassium nitrate and other salt solutions in the oil phase to form a water-in-oil (W / O) high internal phase emulsion, which is then sensitized. Due to its convenient production, superior performance and good safety, its annual output has always accounted for more than half of the total output of industrial explosives in the past ten years, and its position in industrial explosives is very important. [0003] At present, the emulsifiers used in the preparation of emulsion explosives in China are divided into low-molecular emulsifiers and high-molecular emulsifiers. Low-molecular emulsifiers, represented by Span-80, have the characteristics of easy emulsi...

Claims

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Application Information

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IPC IPC(8): C06B23/00C08G81/02
CPCC06B23/00C08G81/02
Inventor 张凯铭郝雪顾俊
Owner NANJING INST OF TECH