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
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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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