Core of water-resistant detonating cord and method for preparing core

A technology of core and water conduction, applied in the field of detonating cords, can solve problems such as potential safety hazards, and achieve the effects of enhancing stability, improving water resistance, and prolonging storage period

Inactive Publication Date: 2018-11-27
JIANGXI GANZHOU GUOTAI SPECIALTY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the detonating cord, the outer covering itself has a certain degree of waterproofness, so the key to the overall waterproofness of the detonating cord lies in the water resistance of its drug core, and the commonly used formulas and methods for optimizing this characteristic The obtained detonating cord core has certain water resistance, but there are still some deficiencies when used in extreme cases, which will cause safety hazards. Improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation process of this batch of anti-water detonating cord drug cores, the specific steps are: according to the ratio of raw materials, respectively weigh 15 parts of paraffin oil petroleum ether saturated solution, 84.6 parts of Taian, and 0.4 parts of graphite powder, and weigh the paraffin oil petroleum ether Saturated solution and graphite powder were added to Taian, stirred and mixed evenly, then granulated, and dried in a water-bath drying oven at a drying temperature of 45°C to obtain water-resistant detonating cord core sample 1.

[0019] After obtaining the water-resistant detonating cord drug core sample 1, the cable is directly manufactured. At the same time, the core wire and the middle layer wire, etc. are waterproofed during the cable manufacturing process. In addition, for the water-resistant detonating cord drug core sample 1, the guide The amount of the water-resistant detonating cord core sample 1 added to the detonating cord is 11.5 g, thereby...

Embodiment 2

[0021] The preparation process of this batch of anti-water detonating cord drug cores, the specific steps are: according to the proportion of raw materials, respectively weigh 18 parts of paraffin oil petroleum ether saturated solution, 81.5 parts of Taian, and 0.5 parts of graphite powder, and weigh the paraffin oil petroleum ether Saturated solution and graphite powder were added to Taian, stirred and mixed evenly, then granulated, and dried in a water-bath drying oven at a drying temperature of 48°C to obtain water-resistant detonating cord core sample 2.

[0022] After obtaining the water-resistant detonating cord drug core sample 2, the cable is directly made. At the same time, the core wire and the middle layer wire are waterproofed during the cable-making process. In addition, for the water-resistant detonating cord drug core sample 2, the guide The amount of the water-resistant detonating cord core sample 2 added in the detonating cord is 12g, thereby obtaining the wate...

Embodiment 3

[0024] The preparation process of this batch of anti-water detonating cord drug cores, the specific steps are: according to the proportion of raw materials, respectively weigh 20 parts of paraffin oil petroleum ether saturated solution, 79.4 parts of Taian, and 0.6 parts of graphite powder, and weigh the paraffin oil petroleum ether Saturated solution and graphite powder were added to Taian, stirred and mixed evenly, and then granulated, and dried in a water-bath drying oven at a drying temperature of 50°C to obtain water-resistant detonating cord core sample 3.

[0025] After obtaining the water-resistant detonating cord drug core sample 3, the cable is directly made. At the same time, the core wire and the middle layer wire are waterproofed during the cable-making process. In addition, for the water-resistant detonating cord drug core sample 3, the per meter The amount of the water-resistant detonating cord core sample 3 added to the detonating cord is 12.5 g, thereby obtaini...

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PUM

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Abstract

The invention discloses a core of a water-resistant detonating cord and a method for preparing the core. The core comprises, by weight, 15-20 parts of paraffin oil and petroleum ether saturated solution, 79.4-84.6 parts of pentaerythrite tetranitrate and 0.4-0.6 part of graphite powder. The method for preparing the core includes adding the paraffin oil and petroleum ether saturated solution and the graphite powder into the pentaerythrite tetranitrate according to raw material ratios; uniformly stirring and mixing the paraffin oil and petroleum ether saturated solution, the graphite powder andthe pentaerythrite tetranitrate with one another to obtain mixtures; granulating the mixtures; drying granules in water-bath drying tanks at the drying temperatures of 45-50 DEG C to obtain the core of the water-resistant detonating cord. The core and the method have the advantages that formulas for the core are improved, accordingly, the water resistance of the core can be integrally improved, the stability of the core can be reinforced, the storage life can be prolonged, and the explosion initiation and propagation performance of the core can be guaranteed; the water resistance and the stability of the core can be improved to the greatest extent by the aid of the method for preparing the core.

Description

technical field [0001] The invention relates to a detonating cord, in particular to a drug core of a water-resistant detonating cord and a preparation method thereof. Background technique [0002] Explosive is a substance that can burn or decompose very quickly, and can generate a large amount of heat and gas in a very short time. A typical explosive consists of explosives and corresponding detonating devices as a whole, and usually has a corresponding shell, which is Triggered by the heat or impact energy of the detonator, the explosive undergoes a rapid chemical reaction, ie complete combustion or decomposition. In a chemical reaction, a compound decomposes to produce a variety of gases. A large amount of energy is stored in the form of chemical bonds between the different atoms of the reactant (original chemical compound). When the compound molecule decomposes, the product (generated gas) may use it Some, but not all, of the energies of , form new bonds. Most of the "re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00C06B21/00C06B25/32
CPCC06B21/0066C06B23/006C06B23/009C06B25/32
Inventor 卢志坚何厚金李祖全侯成举
Owner JIANGXI GANZHOU GUOTAI SPECIALTY CHEM
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