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Novel composite emulsifier for emulsion explosive

A technology of composite emulsifier and emulsified explosive, which is applied in the direction of non-explosive/non-thermal agent components, explosives, offensive equipment, etc., and can solve problems such as failure, large molecular weight, and high requirements for production equipment

Inactive Publication Date: 2021-09-14
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional single-type explosive emulsifiers, such as sorbitan monooleate Span-80 in emulsion explosives, require a plurality of emulsifier molecules to be oriented and arranged on the latex particle interface, resulting in a large consumption, and at the same time Span-80 can interact with impurities such as free acid and unsaturated ethylenic acid in the emulsion explosive system, and is easily affected by water phase substances, which will lead to emulsion breaking or even failure of the emulsion explosive; while polyisobutylene succinimide and its derivatives The emulsifier is used as an emulsifier. Although the emulsion explosive prepared by it has good storage stability, due to its large molecular weight (between 1000-3000), it has high requirements for emulsification strength and is not easy to emulsify. The corresponding requirements for production equipment higher

Method used

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  • Novel composite emulsifier for emulsion explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of polyisobutylene succinic anhydride:

[0026] Add 2000g (2.0mol) highly active polyisobutene (number average molecular weight 1000, α olefin content ≥ 85wt%) into a 5000ml stainless steel autoclave, protect with nitrogen, stir and heat up to 200°C; 353 g (3.6 mol) of molten maleic anhydride were slowly added dropwise. After the dropwise addition, the temperature in the reactor was slowly raised to 230°C, and the reaction was continued at this temperature for 4 hours. After the reaction, nitrogen was blown into the reactor, and the unreacted maleic anhydride was blown out of the reactor; Detect, the saponification value of reaction product is 112mgKOH / g.

Embodiment 2

[0028] Preparation of polyalphaolefin succinic anhydride:

[0029] In a 500ml four-necked glass bottle, add 300g of PAO40, stir and heat up to 130-180°C, drop 35g of molten maleic anhydride and 7ml of di-tert-butyl peroxide initiator into the reaction system simultaneously within 100min . After the maleic anhydride and the initiator are added dropwise, the reaction is continued for 1 hour at a temperature of 130-180° C. to ensure that the reaction is complete. After the reaction is over, the decomposition products of di-tert-butyl peroxide and unreacted maleic anhydride in the four-neck flask are separated by vacuum distillation in the temperature range of 70-110°C to obtain the reaction Product; After testing, the saponification value of the reaction product is 113.4mgKOH / g.

Embodiment 3

[0031] Preparation of Component B:

[0032] In a 500ml four-necked glass bottle, 141.23g (0.5mol) of oleic acid and 52.57g (0.5mol) of diethanolamine were stirred and heated to 130-190°C, and the reaction was continued for 4h.

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Abstract

The invention discloses a novel compound emulsifier for emulsion explosive. The novel compound emulsifier is prepared by mixing the following raw materials in percentage by mass: 60-80% of a component A, 3-10% of a component B and 13-30% of sorbitan monooleate, the component A is a corresponding product synthesized by carrying out alkylation reaction on a polymer with terminal olefin and maleic anhydride through thermal addition and a free radical initiator method, and then reacting with one or more of polyethylene polyamine, alcohol amine and polyhydric alcohol according to a certain ratio of n (anhydride): n (polyethylene polyamine / alcohol amine / polyhydric alcohol) of 1: (0.2-1.5); and the component B is a corresponding product obtained by reacting fatty acid with one or more of polyene polyamine, alcohol amine and polyol according to a certain ratio of n (carboxylic acid): n (polyene polyamine / alcohol amine / polyol) of 1: (0.4-1.4). The composite emulsifier prepared by the invention is easy to emulsify and has high storage stability.

Description

technical field [0001] The invention belongs to the technical field of emulsifiers, and in particular relates to a novel composite emulsifier for emulsion explosives. Background technique [0002] Traditional single-type explosive emulsifiers, such as sorbitan monooleate Span-80 in emulsion explosives, require a plurality of emulsifier molecules to be oriented and arranged on the latex particle interface, resulting in a large consumption, and at the same time Span-80 can interact with impurities such as free acid and unsaturated ethylenic acid in the emulsion explosive system, and is easily affected by water phase substances, which will lead to emulsion breaking or even failure of the emulsion explosive; while polyisobutylene succinimide and its derivatives The emulsifier is used as an emulsifier. Although the emulsion explosive prepared by it has good storage stability, due to its large molecular weight (between 1000-3000), it has high requirements for emulsification streng...

Claims

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Application Information

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IPC IPC(8): C06B23/00C08G81/02
CPCC06B23/00C08G81/021
Inventor 赵东北王龙龙郭海燕范金凤
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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