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Synthesis method of emulsifier for emulsion explosive

A technique of emulsified explosives and synthetic methods, which is applied in the direction of non-explosive/non-thermal agent components, chemical instruments and methods, explosives, etc., can solve the problems of cumbersome synthesis process, complex emulsifier structure, unclear reaction end mark, etc., and reduce the Aggregation, reducing the steps of separation and purification, and the effect of simple and easy synthesis method

Inactive Publication Date: 2012-07-11
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of synthesis method of emulsifier for emulsified explosives in view of problems such as complicated synthesis process in the prior art, complex structure of emulsifier, and unclear sign of the end of reaction. This emulsifier can be effectively applied to emulsified explosives to Improve emulsification efficiency and storage stability of explosives

Method used

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  • Synthesis method of emulsifier for emulsion explosive
  • Synthesis method of emulsifier for emulsion explosive
  • Synthesis method of emulsifier for emulsion explosive

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Dissolve 16.0 g of PIBSA (polyisobutylene chain molecular weight of 1000) in xylene, add it into a 250 mL four-neck flask, and weigh triethanolamine in a constant pressure dropping funnel according to the molar ratio of PIBSA:triethanolamine of 1:2. Put constant pressure dropping funnel, thermometer, N 2 Introduce the tube, put the mechanical stirring device on the four-necked flask, start stirring, and feed N 2 , the temperature was raised to 60°C, and triethanolamine was slowly added dropwise. After the dropwise addition, the temperature was raised to 140°C, and the reaction was terminated when the acid value decreased to 5 mgKOH / g, and the product emulsifier A was obtained by extraction with saturated saline. Analyze the effective groups contained in the product by infrared spectroscopy (such as figure 1 Shown), measure the hydroxyl value of product (as shown in table 1); Prepare emulsified explosive with product emulsifier A as emulsifier, observe the particle morp...

Embodiment 2

[0027] Dissolve 15.4 g of PIBSA (polyisobutylene chain molecular weight of 1000) in 150SN base oil, add it into a 250 mL four-necked flask, and weigh triethanolamine in a constant pressure dropping funnel according to the molar ratio of PIBSA:triethanolamine 1:1.5. Put constant pressure dropping funnel, thermometer, N 2 Introduce the tube, put the mechanical stirring device on the four-necked flask, start stirring, and feed N 2 , the temperature was raised to 40°C, and triethanolamine was slowly added dropwise. After the dropwise addition, the temperature was raised to 140°C, and the reaction was terminated when the acid value decreased to 8 mgKOH / g, and the product emulsifier B was obtained by extraction with saturated saline. The hydroxyl value of the product was measured; the emulsifier B was used as the emulsifier to prepare the emulsified explosive, and the stability of the emulsified explosive was tested by high and low temperature cycle experiments, and the detonation v...

Embodiment 3

[0029] Dissolve 15.8 g of PIBSA (polyisobutylene chain molecular weight: 1300) in xylene, add it into a 250 mL four-necked flask, and weigh triethanolamine in a constant pressure dropping funnel according to the molar ratio of PIBSA:triethanolamine of 1:2.5. Put constant pressure dropping funnel, thermometer, N 2 Introduce the tube, put the mechanical stirring device on the four-necked flask, start stirring, and feed N 2 , the temperature was raised to 60°C, and triethanolamine was slowly added dropwise. After the dropwise addition, the temperature was raised to 140°C, and the reaction was terminated when the acid value decreased to 10 mgKOH / g, and the product emulsifier C was obtained by extraction with saturated saline. The hydroxyl value of the product was measured; the product emulsifier C was used as an emulsifier to prepare an emulsion explosive, and the stability of the emulsion explosive was tested by high and low temperature cycle experiments, and the detonation veloc...

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Abstract

The invention relates to a novel emulsifier for emulsion explosives, which is product of reaction of PIBSA (polyisobutylene succinic anhydride) and triethanolamine. The method has the advantages that no catalyst is needed for reaction, changes in the reaction acid value can be followed during the reaction process, and the ending of reaction can be determined according to the acid value. The emulsifier synthesized in the method has high emulsion capacity, and the prepared emulsion explosive has high stability for storage and excellent explosive performance. The emulsifier can also be used as adispersing agent in lubricants to effectively disperse oil sludge.

Description

technical field [0001] The invention relates to a novel W / O emulsifier, in particular to a synthesis method of the emulsifier which can be applied to emulsion explosives. Background technique [0002] Emulsion explosive is a new type of industrial explosive developed in the late 1960s abroad. It has excellent water resistance, detonation performance, wide source of raw materials, and a series of advantages such as relatively simple process. In 2010, the production of emulsion explosives maintained a momentum of rapid growth, with an annual output of 1.508 million tons, accounting for 42.9% of the total explosives, an increase of 2.7 percentage points over 2009. [0003] At present, the main emulsifiers used in domestic emulsion explosives industry are sorbitan monooleate (Span-80), polyisobutylene succinimide (T152) and compound emulsifiers. Span-80 hydrophilic group has better water solubility and is easier to emulsify. It does not require high temperature and shear force ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/10C08F8/46C06B23/00B01F17/34C09K23/34
Inventor 吕春绪谢丽郭晓晶李斌栋
Owner NANJING UNIV OF SCI & TECH
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