Phospholipid-based emulsifier for emulsion explosive and preparation method thereof

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 complex synthesis process, blasting performance, unreachable storage stability, and high price, and achieve synthetic The effect of simple process, low cost and low production cost

Active Publication Date: 2018-07-24
江西抚州国泰特种化工有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the defects such as complicated synthetic process and high price of emulsifiers of polymer emulsion explosives such as polyisobutylene succinate amine and polyisobutylene monosuccinimide, and the application of soybean lecithin and phospholipid-based raw materials in emulsion explosives, the Blasting performance, storage stability and other aspects do not meet the national standards

Method used

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  • Phospholipid-based emulsifier for emulsion explosive and preparation method thereof
  • Phospholipid-based emulsifier for emulsion explosive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Place 500.0 g of concentrated soybean lecithin in a reactor with a heating device, slowly heat up to 50°C and start stirring under a vacuum of 0.09MPa, and add 12.5g of maleic anhydride; continue to heat up to 95°C, the reaction time 3.0h, stop the reaction when the acylation rate is ≥87%. According to the quality of the acylated modified phospholipid generated, 40 grams of the grafting reagent triethanolamine was added dropwise, reacted for 12.0 h at a reaction temperature of 100 ° C, and the acid value of the reactant was determined to be ≤ 27.5 mg KOH / g to obtain the product phospholipid-based emulsifier a.

Embodiment 2

[0039] Put 1000.0 g of concentrated soybean lecithin in a reactor with a heating device, slowly raise the temperature to 65°C and start stirring under the condition of vacuum degree of 0.095MPa, and add 60.0g of maleic anhydride; continue to heat up to 85°C, and react for 4.0h, Stop the reaction when the acylation rate is ≥91%. According to the quality of the acylated modified phospholipid generated, 30.0 g of the grafting reagent diethanolamine was added dropwise, reacted for 8.0 h at a reaction temperature of 90 ° C, and the acid value of the reactant was determined to be ≤ 29.2 mg KOH / g to obtain the product phospholipid-based emulsifier b.

Embodiment 3

[0041] Put 500.0 g of concentrated soybean lecithin in a reactor with a heating device, and slowly raise the temperature to 50°C to start stirring under a vacuum of 0.090MPa, and add 25.0g of acetic anhydride; continue to heat up to 90°C, and react for 2.5h , Stop the reaction when the acylation rate is ≥90%. According to the quality of the acylated modified phospholipid generated, 32.5 grams of grafting reagent diethanolamine was added dropwise, reacted for 8.0 h at a reaction temperature of 95 ° C, and the acid value of the reactant was determined to be ≤ 26.2 mg KOH / g to obtain the product phospholipid-based emulsifier C, its infrared spectrum is shown in figure 1 .

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Abstract

The invention discloses a phospholipid-based emulsifier for an emulsion explosive and a preparation method thereof. The phospholipid-based emulsifier is prepared through performing acylation reaction on phospholipid base and acid anhydride and then performing grafting reaction with hydramine, wherein the phospholipid content in the used phospholipid base is 50-80%.The method disclosed by the invention has the following advantages: no solvent condition is needed in the reaction, the variations of the acylation rate and the reaction product acid value are tracked in the reaction process, and the ending of the reaction is judged according to the acid value. According to the method, the phospholipid-based emulsifier generated through the reaction has favorable emulsifying property and emulsifying stability; and the prepared emulsion explosive has fine explosiveness and long storage time.

Description

technical field [0001] The invention belongs to the technical field of emulsifier preparation, in particular to a preparation method and application of a phospholipid-based emulsifier for emulsified explosives. Background technique [0002] Soybean lecithin is a by-product of soybean oil production - wet pectin, which is prepared by vacuum concentration and drying, and can be dissolved in oil and non-polar solvents. Because there are lipophilic and hydrophilic groups in the molecular structure of phospholipids, soy lecithin has the functions of emulsification, wetting, dispersion, penetration, solubilization, defoaming and anti-oxidation, and is widely used in various industries. [0003] Because the hydrophilic-lipophilic balance value (HLB value) of soybean lecithin is relatively small, about 3.2 to 4.4, its lipophilic performance is better than that of hydrophilicity, and its dispersion in the water phase system is not good; Poor stability, easy oxidative browning, cokin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00
CPCC06B23/009
Inventor 毛程鑫李桂华李宝林李阿萍陈虹吴俊吴进修夏国兴王敏
Owner 江西抚州国泰特种化工有限责任公司
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