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Emulsifier for emulsion explosive, preparation method thereof, emulsion base and emulsion explosive

A technology of emulsified explosives and emulsifiers, which is applied in the direction of non-explosive/non-thermal agent components, explosives, offensive equipment, etc. It can solve the problems of low storage stability, low emulsifying force, and low surface tension of emulsifiers, and achieve excellent performance. Milk properties, strong emulsifying power, and low surface tension effects

Active Publication Date: 2021-02-26
北矿亿博(沧州)科技有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the disadvantages of low storage stability and low emulsifying power of the emulsifier used in the existing emulsified explosive, and provides an emulsifier used in the emulsified explosive with low surface tension and strong emulsifying ability, a preparation method thereof, an emulsified matrix and an emulsified explosive

Method used

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  • Emulsifier for emulsion explosive, preparation method thereof, emulsion base and emulsion explosive
  • Emulsifier for emulsion explosive, preparation method thereof, emulsion base and emulsion explosive
  • Emulsifier for emulsion explosive, preparation method thereof, emulsion base and emulsion explosive

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preparation example Construction

[0074] figure 1 is a flowchart illustrating a method of preparing an emulsifier according to the present invention.

[0075] refer to figure 1 , according to the present invention, the method of making the above-mentioned emulsifier includes: reacting polyhydric alcohol and fatty acid under the action of a catalyst in an organic solvent (step S1: preparation of polyhydric alcohol fatty acid ester); adding carboxyl modified After the silicone oil has been reacted for a predetermined time, it is filtered and the solvent is removed under reduced pressure (step S2) to obtain an emulsifier.

[0076] In step S1, mix 1-100 parts by weight of polyol, 1-5 parts by weight of catalyst and 1-300 parts by weight of organic solvent, raise the temperature to 100°C-150°C, Then add 1-200 parts by weight of fatty acid dropwise, then continue to heat up to 150°C-180°C, and react for 2 hours-4 hours, so as to obtain a mixture by esterifying polyhydric alcohol and fatty acid. After the reaction...

example 1

[0087] Example 1: Emulsifier SiO-EMU-1

[0088] Preparation of carboxyl-modified silicone oil SiO-COOH-1: prepare carboxyl-modified silicone oil SiO-COOH-1 by the following reaction 1-1,

[0089] Reaction 1-1

[0090]

[0091] Add 200g of hydrogen to a 1000mL three-necked flask equipped with a thermometer, a mechanical stirrer and a condenser, and the hydrogen content is 0.36g (100g) -1 After adding 10 drops of chloroplatinic acid-isopropanol catalyst (the effective Pt content is 6×10 -6 mol); N 2 After purging, add dropwise the toluene solution containing 64g methyl acrylate at 60°C, continue the reaction after the dropwise addition, until the IR monitors the Si-H peak (about 2150cm -1 ) disappears; then add 20wt% NaOH aqueous solution to alkali hydrolyze the methyl ester, acidify with HCl, extract with toluene, and remove the solvent to obtain the carboxyl-modified silicone oil SiO-COOH-1.

[0092] Preparation of emulsifier SiO-EMU-1: Prepare emulsifier SiO-EMU-1 by...

example 2

[0096] Example 2: Emulsifier SiO-EMU-2

[0097] Preparation of carboxyl-modified silicone oil SiO-COOH-2: In addition to m being 11 and n being 2 in Reaction 1-1, the carboxyl-modified silicone oil SiO-COOH-2 was prepared by Reaction 1-1,

[0098] Add 200g of hydrogen to a 1000mL three-necked flask equipped with a thermometer, a mechanical stirrer and a condenser, and the hydrogen content is 0.18g (100g) -1 After adding 8 drops of chloroplatinic acid-isopropanol catalyst (the effective Pt content is 4.8×10 -6 mol); N 2 After purging, add dropwise the toluene solution containing 32g methyl acrylate at 80°C, continue the reaction after the dropwise addition, until the IR monitors the Si-H peak (about 2150cm -1 ) disappears; then add 20wt% NaOH aqueous solution to alkali hydrolyze the methyl ester, acidify with HCl, extract with toluene, and remove the solvent to obtain the carboxyl-modified silicone oil SiO-COOH-2.

[0099] Preparation of emulsifier SiO-EMU-2: Prepare emulsif...

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Abstract

The invention discloses an emulsifier for emulsion explosives, a preparation method thereof, an emulsifying matrix and an emulsion explosive. The emulsifier is represented by Formula 1: Formula 1 wherein R 1 , R 2 , R 3 , R 4 , m and n are the same as defined in the specification. The emulsifier according to the present invention has low surface tension and strong emulsifying ability, and the prepared emulsifying base has excellent storage stability, water resistance and bump resistance.

Description

technical field [0001] The present invention belongs to the field of organic functional chemicals, and in particular relates to an emulsifier for emulsion explosives and a preparation method thereof, an emulsification matrix and emulsion explosives, and more specifically relates to a silicone emulsifier for emulsion explosives and a preparation method thereof and Application in the field of emulsion explosives. Background technique [0002] Emulsion explosives have been developed, promoted and applied in my country for more than 40 years, and their good detonation performance and use effect have been widely recognized in China. In recent years, it has developed rapidly, and the total production has exceeded half of the total industrial explosives, and it has become the main choice for blasting operations. Emulsion explosives are W / O emulsions prepared by emulsifying oxidizers (water phase), combustibles (oil phase) and other additives. They have the characteristics of heter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/38C06B23/00
CPCC06B23/00C08G77/045C08G77/38
Inventor 叶辉马平谭本岭崔刚郝会娟王肇中查正清
Owner 北矿亿博(沧州)科技有限责任公司