Delay composition for fireworks

A technology of delaying medicine and firecrackers, which is applied in the direction of explosives, etc., can solve the problems of long burning time, second drift, slow burning speed, etc., and achieve the effects of convenient preparation, small change degree, and reduced delay accuracy

Inactive Publication Date: 2019-06-18
张金希
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Delay drug is a pyrotechnic drug that controls the delay time of the explosion sequence or fire transmission sequence; it is mainly composed of combustibles, oxidants and binders, and other additives are often added to the formula, such as desensitizers and burning rate regulators; delay drugs are used as A kind of pyrotechnic agent that controls the time delay in explosive products. There are many classification methods. According to the components of the delay drug, it can be divided into simple delay drug and mixed delay drug; according to the state of its combustion products, it can be divided into There are gas delay medicine and micro gas delay medicine; according to the delay time of delay medicine, it can be divided into millisecond delay medicine and second delay medicine; the delay precision of delay medicine is affected by the delay medicine formula, raw material particle size, additive type and nature, storage conditions, etc. Influenced by various factors; especially for long-delay firecrackers, the delay agent used in it has a slow burning rate and a long burning time, and it is prone to problems such as second drift and even blind fire after long storage; A delay drug that can prolong the storage time without affecting the delay effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The delay medicine for firecrackers of the present invention is composed of the following raw materials by weight percentage: 27% tungsten powder, 58% barium chromate, 10% potassium perchlorate, 5% calcium fluoride, and 1% binder.

[0031] Wherein, the particle size of the tungsten powder is 7-10um.

[0032] The preparation method of the delay medicine for fireworks comprises the following steps:

[0033] The first step is to divide the raw materials into a drying oven and set a constant temperature of 45°C to dry for 4 hours, and weigh them with an electronic analytical balance according to the weight percentage, and control the total drug weight to 50g;

[0034] In the second step, put the delayed drug in a sieve, pre-mix it with a 36-mesh sieve, put it in a steel ball mill tank with a diameter of 100mm, and add 25ml of absolute ethanol to stir and mix the drug;

[0035] The third step is to add three kinds of steel balls with different diameters according to the rat...

Embodiment 2

[0043] The delay medicine for firecrackers of the present invention is composed of the following raw materials by weight percentage: 30% tungsten powder, 56% barium chromate, 9% potassium perchlorate, 5% calcium fluoride, and 1% binder.

[0044] Wherein, the particle size of the tungsten powder is 7-10um.

[0045] The preparation method of the delay medicine for fireworks comprises the following steps:

[0046] The first step is to divide the raw materials into a drying oven and set a constant temperature of 45°C to dry for 4 hours, and weigh them with an electronic analytical balance according to the weight percentage, and control the total drug weight to 50g;

[0047] In the second step, put the delayed drug in a sieve, pre-mix it with a 40-mesh sieve, put it in a steel ball mill tank with a diameter of 100mm, and add 25ml of absolute ethanol to stir and mix the drug;

[0048] The third step is to add three kinds of steel balls with different diameters according to the rati...

Embodiment 3

[0056] The delay medicine for fireworks of the present invention is composed of the following raw materials in weight percentage: 33% tungsten powder, 52% barium chromate, 10% potassium perchlorate, 5% calcium fluoride, and 2% binder.

[0057] Wherein, the particle size of the tungsten powder is 7-10um.

[0058] The preparation method of the delay medicine for fireworks comprises the following steps:

[0059]The first step is to divide the raw materials into a drying oven and set a constant temperature of 45°C to dry for 4 hours, and weigh them with an electronic analytical balance according to the weight percentage, and control the total drug weight to 50g;

[0060] In the second step, put the delayed drug in a sieve, pre-mix it with a 35-mesh sieve, put it in a steel ball mill tank with a diameter of 100mm, and add 25ml of absolute ethanol to stir and mix the drug;

[0061] The third step is to add three kinds of steel balls with different diameters according to the ratio o...

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Abstract

The invention discloses a delay composition for fireworks. The delay composition for the fireworks is prepared from the following raw materials in percentage by weight: 20-80% of tungsten powder, 10-60% of barium chromate, 5-10% of potassium perchlorate and 1-5% of calcium fluoride. According to the delay composition for the fireworks, the delay compositions with different burning speeds can be obtained through compounding the tungsten powder, the barium chromate, the potassium perchlorate and the calcium fluoride in different proportions; the delay composition is easy to prepare; in addition,the calcium fluoride is added into the delay composition, and the combustible matter content is increased after the addition, so that the storage stability of the delay composition can be better ensured; and the delay precision is reduced to some extent after half-year storage, but the change degree is relatively small.

Description

technical field [0001] The invention relates to a delay medicine for fireworks, which belongs to the technical field of fireworks. Background technique [0002] Delay drug is a pyrotechnic drug that controls the delay time of the explosion sequence or fire transmission sequence; it is mainly composed of combustibles, oxidants and binders, and other additives are often added to the formula, such as desensitizers and burning rate regulators; delay drugs are used as A kind of pyrotechnic agent that controls the time delay in explosive products. There are many classification methods. According to the components of the delay drug, it can be divided into simple delay drug and mixed delay drug; according to the state of its combustion products, it can be divided into There are gas delay medicine and micro gas delay medicine; according to the delay time of delay medicine, it can be divided into millisecond delay medicine and second delay medicine; the delay precision of delay medici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/12
Inventor 张金希
Owner 张金希
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