CN110981673A - Smokeless sulfur-free firing cable and preparation method thereof - Google Patents

Abstract

The invention relates to a smokeless sulfur-free firing cable and a preparation method thereof, belonging to the field of environment-friendly pyrotechnic compositions. The agent of the firing cable consists of the following raw materials in percentage by mass: ammonium nitrate, nitrocellulose, nano aluminum powder, dicyandiamide, polyvinyl acetate and molybdenum trihydride; the preparation method of the smokeless and sulfur-free lead wire medicine has the advantages of low cost and easy obtainment of required experimental raw materials, simple production and preparation process, safe and reliable operation and mass production. The smokeless and sulfur-free fuse powder does not release smoke and discharge sulfur-containing gas in the ignition process, is environment-friendly and healthy, does not pollute the environment, and does not influence the ornamental value of fireworks and crackers in the ignition process.

Description

Smokeless sulfur-free firing cable and preparation method thereof

Technical Field

The invention relates to a smokeless sulfur-free firing cable and a preparation method thereof, belonging to the field of environment-friendly pyrotechnic compositions.

Background

The emergence of firecrackers can be traced back to the period of south-north, fireworks are born in the period of Tang dynasty, and the firecrackers have a history of more than one thousand years today and become a part of traditional culture of Chinese nationalities. People are used to increase the festival atmosphere by igniting fireworks and crackers during festive festivals. However, with the development of society, the "forbidden orders" appear in various big cities in recent years, and festive smells are getting lighter and lighter. The 'forbidden' is not only because the fireworks and crackers are set off to cause the hidden danger of fire hazard in dense urban groups, but also more importantly, a large amount of smoke and harmful gas are generated when the fireworks and crackers are set off, and the residual dust is much after the fireworks and crackers are set off, so that the environmental pollution is caused and the health of human is also endangered.

The lead is an important guarantee that fireworks and crackers can be smoothly set off, most of the traditional lead explosive uses potassium perchlorate, potassium chlorate or potassium nitrate, sulfur, charcoal and potassium hydrogen phthalate as main components, and combustion products contain a large amount of substances such as sulfur dioxide, nitrogen oxide, potassium carbonate, potassium sulfate and the like, so that smoke is formed after moisture is absorbed in the air, and the lead is very unfavorable for the environment. It has been reported that the PM2.5 index and SO2 content of outdoor air increase dramatically upon the setting off of fireworks and crackers, especially during the spring festival. This not only destroys the ecological environment but also seriously affects the health of people. (Songjiafang firework smokeless lead medicament composition: China, 200810143002.0.[ P ].2009-07-15.) proposes that the smoke generated by the medicament composition prepared by using ammonium perchlorate and single-double-base powder is less than 30% of that of the existing medicament, and the medicament composition has no sulfur element in the components. The presence of halogen chloride in ammonium perchlorate does not meet the environmental theme advocated today. (Wujunhe smokeless fireworks: China, 90105447.X. [ P ].1991-08-28) proposes that nitrocotton and potassium perchlorate are adopted to prepare a medicament composition, and the prepared series of smokeless fireworks products have the advantages of no smoke generation, aromatic smell and the like when being set off. But perchlorate is also used in the preparation of the environment-friendly firework, and the perchlorate can generate halogen elements in the preparation and use processes, so that the environment-friendly firework does not conform to the advocated halogen-free chemical industry. (Xiweipeng, a safe and environmentally friendly firework: China, 201820270778.8.[ P ].2018.02.26) utilizes bioluminescence to generate light of different colors under the action of a catalyst. Compared with the current fireworks, the bio-enzyme fireworks are green and pollution-free, and can not cause harm to human bodies due to fireworks explosion. However, the cost of the bio-enzyme fireworks is undoubtedly much higher than that of the existing fireworks, and the non-civil industry can bear the cost, and the storage stability of the bio-enzyme is still uncertain.

In order to solve the problems of smoke and pollution generated in the process of setting off fireworks and crackers, a series of smokeless firework products must be prepared. The ignition wire is an indispensable component for setting off fireworks and crackers, and firstly, the generation of smog and harmful substances is stopped from the starting end of the ignition fireworks and crackers, SO that the ignition wire is required to provide a fuel which can not generate smoke and SO during combustion₂The formula of the medicine for introducing the lead.

Disclosure of Invention

The invention aims to provide a smokeless and sulfur-free firing cable and a preparation method thereof, wherein the firing cable does not release smoke and sulfur-containing pollution gas in the combustion process, and is an environment-friendly firing cable.

The purpose of the invention is realized by the following technical scheme.

A smokeless sulfur-free firing cable comprises the following raw materials in percentage by mass:

a preparation method of a smokeless and sulfur-free firing cable comprises the following specific steps:

the method comprises the following steps: firstly, fully dissolving nitrocellulose in acetone to obtain nitrocellulose solution.

The addition amount of the acetone in the first step is as follows: can dissolve nitrocellulose and obtain saturated solution of nitrocellulose.

Step two: dissolving ammonium nitrate with distilled water, then adding dicyandiamide, uniformly mixing, adding the nitrocellulose solution obtained in the step one, mixing and stirring for 10-30 minutes.

Step three: adding molybdenum trihydride, nano aluminum powder and polyvinyl acetate emulsion into a medicine mixer, and mixing for 10-20 minutes.

Step four: and (4) adding the medicament in the step two into the medicine mixing machine in the step three, uniformly mixing, adding a proper amount of water, stirring to be viscous, and taking out.

Step five: and (4) soaking the prepared cotton thread into the viscous medicament obtained in the step three in advance, taking out after full soaking, and airing for later use to obtain the firing cable.

Advantageous effects

1. The preparation method of the smokeless and sulfur-free ignition wire has the advantages of low cost and easy obtainment of required experimental raw materials, simple production and preparation process, safe and reliable operation and mass production.

2. According to the preparation method of the smokeless and sulfur-free ignition wire, the prepared ignition wire does not release smoke and sulfur-containing gas in the ignition process, is environment-friendly and healthy, does not pollute the environment, and does not affect the ornamental value of fireworks and crackers in the ignition process.

Detailed Description

The invention is further illustrated by the following examples.

Example 1

The smokeless and sulfur-free lead wire comprises the following components in percentage by mass:

a preparation method of a smokeless and sulfur-free lead wire comprises the following specific steps:

the method comprises the following steps: 100ml of acetone is added into a three-neck flask, 200g of nitrocellulose is added in portions and stirred until the nitrocellulose is fully dissolved.

Step two: 200g of ammonium nitrate was dissolved in 100ml of distilled water in a beaker with stirring. 10g of dicyandiamide was further added to obtain a mixed solution. And adding the mixed solution into the three-neck flask in the step one, and stirring for 10 minutes.

Step three: 50g of nano aluminum powder, 25g of polyvinyl acetate and 15g of molybdenum trihydride are weighed and added into a medicine mixing machine for mixing for 10 minutes.

Step four: and (4) adding the medicament in the step two into the step three, mixing and stirring for 30 minutes, adding 50ml of the medicament, adjusting to be viscous, and taking out.

Step five: and (4) soaking the prepared cotton thread in the viscous medicament obtained in the step four for 4 hours, taking out and airing for later use to obtain the firing cable.

As a result: when the firing cable is prepared, the utilization rate of the fuse chemical is 100 percent; igniting to obtain a firing cable, and observing by naked eyes without obvious smoke release; the flame combustion is stable, and the combustion speed is about 1.5cm/s from the beginning to the end of the combustion; detecting the combusted gas without the existence of sulfur element; the firing cable is stored for one week at room temperature, and the observation and the recording are carried out, so that the phenomenon of spontaneous combustion and non-combustion is avoided.

Example 2

The smokeless and sulfur-free lead wire comprises the following components in percentage by mass:

a preparation method of a smokeless and sulfur-free lead wire comprises the following specific steps:

the method comprises the following steps: 600ml of acetone is added into a three-neck flask, 1.6kg of nitrocellulose is added in portions and stirred until the nitrocellulose is fully dissolved.

Step two: 1.44kg of ammonium nitrate was dissolved in 500ml of distilled water in a beaker with stirring. An additional 120g of dicyandiamide was added. The solution is added into the three-neck flask in the first step and stirred for 30 minutes.

Step three: 480g of nano aluminum powder, 200g of polyvinyl acetate and 160g of molybdenum trihydride are weighed and added into a medicine mixing machine for mixing for 15 minutes.

Step four: and (4) adding the medicament in the step two into the step three, mixing and stirring for 25 minutes, adding 120ml of the medicament, adjusting to be viscous, and taking out.

Step five: and (4) soaking the prepared cotton thread in the viscous medicament obtained in the step four for 4 hours, taking out and airing for later use to obtain the firing cable.

As a result: when the firing cable is prepared, the utilization rate of the fuse chemical is 100 percent; igniting to obtain a firing cable, and observing by naked eyes without obvious smoke release; the flame combustion is stable, and the combustion speed is about 1.6cm/s from the beginning to the end of the combustion; detecting the combusted gas without the existence of sulfur element; the firing cable is stored for one week at room temperature, and the observation and the recording are carried out, so that the phenomenon of spontaneous combustion and non-combustion is avoided.

Example 3

The smokeless and sulfur-free lead wire comprises the following components in percentage by mass:

a preparation method of a smokeless and sulfur-free lead wire comprises the following specific steps:

the method comprises the following steps: 1.2L of acetone is added into a three-neck flask, 3kg of nitrocellulose is added in portions and stirred until the nitrocellulose is fully dissolved.

Step two: 5kg of ammonium nitrate was dissolved in 2L of distilled water in a beaker with stirring. 100g of dicyandiamide were added. The solution is added into the three-neck flask in the first step and stirred for 30 minutes.

Step three: 1.3kg of nano aluminum powder, 400g of polyvinyl acetate and 200g of molybdenum trihydride are weighed and added into a medicine mixer for mixing for 20 minutes.

Step four: and (4) adding the medicament in the step two into the step three, mixing and stirring for 30 minutes, adding 400ml of the medicament, adjusting to be viscous, and taking out.

Step five: and (4) soaking the prepared cotton thread in the viscous medicament obtained in the step four for 4 hours, taking out and airing for later use to obtain the firing cable.

As a result: when the firing cable is prepared, the utilization rate of the fuse chemical is 100 percent; igniting to obtain a firing cable, and observing by naked eyes without obvious smoke release; the flame combustion is stable, and the combustion speed is about 1.4cm/s from the beginning to the end of the combustion; detecting the combusted gas without the existence of sulfur element; the firing cable is stored for one week at room temperature, and the observation and the recording are carried out, so that the phenomenon of spontaneous combustion and non-combustion is avoided.

The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (2)

1. A smokeless and sulfur-free ignition cable is characterized in that: the lead-leading medicine consists of the following raw materials in percentage by mass:

2. a process for preparing a wick according to claim 1, wherein: the method comprises the following specific steps:

the method comprises the following steps: firstly, fully dissolving nitrocellulose in acetone to obtain nitrocellulose solution;

the addition amount of the acetone in the first step is as follows: can dissolve nitrocellulose and obtain a saturated solution of nitrocellulose;

step two: dissolving ammonium nitrate with distilled water, then adding dicyandiamide, uniformly mixing, adding the nitrocellulose solution obtained in the step one, mixing and stirring for 10-30 minutes;

step three: adding molybdenum trihydride, nano aluminum powder and polyvinyl acetate emulsion into a medicine mixer, and mixing for 10-20 minutes;

step four: adding the medicament in the step two into the medicament mixing machine in the step three, uniformly mixing, adding a proper amount of water, stirring to be viscous, and taking out;

step five: and (4) soaking the prepared cotton thread into the viscous medicament obtained in the step three in advance, taking out after full soaking, and airing for later use to obtain the firing cable.