CN110981652A - Smokeless and sulfur-free firework stabilizer and preparation method thereof - Google Patents
Smokeless and sulfur-free firework stabilizer and preparation method thereof Download PDFInfo
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- CN110981652A CN110981652A CN201911219707.0A CN201911219707A CN110981652A CN 110981652 A CN110981652 A CN 110981652A CN 201911219707 A CN201911219707 A CN 201911219707A CN 110981652 A CN110981652 A CN 110981652A
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/006—Stabilisers (e.g. thermal stabilisers)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
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Abstract
The invention relates to a stabilizer for smokeless and sulfur-free fireworks and a preparation method thereof, belonging to the field of environment-friendly pyrotechnic compositions. Weighing magnesium stearate, dimethyl diphenyl urea, ferrocene, montmorillonite and ethyl cellulose; respectively adding magnesium stearate and dimethyl diphenylurea into ethanol under stirring to obtain a solution A; adding ferrocene into a dichloromethane/petroleum ether mixed solvent, and continuously stirring until the ferrocene is dissolved to obtain a solution B; adding the solution A into the solution B under the stirring state, adding montmorillonite and ethyl cellulose in sequence under the heating and stirring state, continuously stirring until the materials become uniform micelle, granulating and drying to obtain a crude product of the smokeless and sulfur-free firework stabilizer; and crushing and sieving the crude product of the smokeless and sulfur-free firework stabilizer to obtain the smokeless and sulfur-free firework stabilizer. The method adopts magnesium stearate and ethyl cellulose as main components, the decomposition product is gas and does not contain sulfur element; the preparation method is simple, and the production process has no three-waste discharge.
Description
Technical Field
The invention relates to a stabilizer for smokeless and sulfur-free fireworks and a preparation method thereof, belonging to the field of environment-friendly pyrotechnic compositions.
Background
Since ancient times, China has the tradition of setting off fireworks in festivals, and the setting off of fireworks adds a festive atmosphere to the festivals. However, in recent years, due to the increasing consumption, the lack of environmental awareness and the influence of the proliferation of manufacturers, fireworks are set off in large quantities, and a large amount of toxic and harmful gas is generated, which can bring adverse effects to the living environment of residents, and even people can suffer from respiratory diseases.
On the premise of ensuring that fireworks are normally used by people and ensuring that the setting-off effect of fireworks is not reduced or even more excellent, the pollution to the environment and the harm to human bodies caused by setting-off of fireworks are reduced, which is a main contradiction to be urgently solved in the fireworks industry and is also a hotspot problem and key problem on the development road of the fireworks industry,
the firework stabilizer is an important component in pyrotechnic compositions, which ensures the storage and transportation safety of fireworks, and the common firework stabilizer is diphenylamine (CN109232141A, CN102924193A) which generates smoke when being insufficiently combusted, thus polluting the environment. Therefore, the prepared smokeless and sulfur-free firework stabilizer meets the requirement of the prior stage on environmental protection, indicates a direction for the development of firework industry, and has great social and practical significance.
Disclosure of Invention
The invention aims to provide a preparation method of a stabilizer for smokeless and sulfur-free fireworks, which realizes the efficient preparation of the stabilizer for smokeless and sulfur-free fireworks. The smokeless and sulfur-free firework stabilizer not only keeps the effect of the existing firework stabilizer, but also does not generate irritant gas in the using process, thereby meeting the market demand.
The purpose of the invention is realized by the following technical scheme.
A stabilizer for smokeless and sulfur-free fireworks comprises the following components by mass percent:
a preparation method of a smokeless and sulfur-free firework stabilizer comprises the following specific steps:
step one, weighing magnesium stearate, dimethyl diphenyl urea, ferrocene, montmorillonite and ethyl cellulose according to the mass ratio of a formula;
step two, respectively adding magnesium stearate and dimethyl diphenyl urea into ethanol under the stirring state, wherein the mass ratio of the magnesium stearate to the ethanol is 1 (3-5), heating to 60-70 ℃, and continuously stirring until solutes are completely dissolved to obtain a solution A;
step three, adding ferrocene into a dichloromethane/petroleum ether mixed solvent under a stirring state, wherein the mass ratio of the ferrocene to the mixed solvent is 1 (2-4), and continuously stirring until the ferrocene is completely dissolved to obtain a solution B;
step four, adding the solution A into the solution B under a stirring state, heating to 75-90 ℃, then adding montmorillonite and ethyl cellulose in sequence under the stirring state, and continuously stirring at a speed of 70-100 rpm until the materials become uniform micelle;
the judging method of the uniform micelle-like substance comprises the following steps: extruding the paste-like substance through a 20-mesh copper sieve to form continuous thin strips which are not adhered to each other;
step five, granulating the uniform micelle with moderate hardness obtained in the step four by using a double-screw granulator, and performing vacuum drying for 12-24 hours at the temperature of 40-60 ℃ to obtain a crude product of the stabilizer of the smokeless and sulfur-free firework;
and step six, crushing the crude product of the smokeless and sulfur-free firework stabilizer obtained in the step five by light pressure, sieving the crushed product through a 300-mesh copper sieve, and taking substances which penetrate through the copper sieve to obtain the smokeless and sulfur-free firework stabilizer.
In the third step, the mass fraction of the dichloromethane in the dichloromethane/petroleum ether mixed solvent is 20-40%.
Advantageous effects
1. A stabilizer for smokeless and sulfur-free fireworks comprises magnesium stearate and ethyl cellulose as main ingredients, and decomposition product is gas and contains no sulfur element;
2. the preparation method of the smokeless and sulfur-free firework stabilizer has the advantages of simple process, few steps, no three-waste emission in the production process, suitability for flow line operation of factories, suitability for large-scale industrial production and remarkable economic and social benefits.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A stabilizer for smokeless and sulfur-free fireworks comprises the following components in percentage by mass:
respectively adding 25g of magnesium stearate and 17g of dimethyl diphenyl urea into 80g of ethanol under the stirring state, heating to 60 ℃, and continuously stirring until solutes are completely dissolved to obtain a solution A; adding 12g of ferrocene into 25g of dichloromethane (20%)/petroleum ether mixed solvent under stirring, and continuously stirring until the ferrocene is completely dissolved to obtain a solution B; adding the solution A into the solution B under the stirring state, heating to 75 ℃, adding 10g of montmorillonite and 36g of ethyl cellulose in sequence under the stirring state, and continuously stirring at the speed of 70rpm until the materials become uniform micelle; granulating the obtained uniform micelle with moderate hardness by using a double-screw granulator, and carrying out vacuum drying for 12 hours at the temperature of 60 ℃ to obtain a crude product of the smokeless and sulfur-free firework stabilizer; crushing the obtained crude product of the stabilizer of the smokeless and sulfur-free firework by light pressure, sieving the crushed product by a 300-mesh copper sieve, and taking substances which penetrate through the copper sieve to obtain 98g of the stabilizer of the smokeless and sulfur-free firework; carrying out thermal stability test on the smokeless sulfur-free firework stabilizer at 75 ℃ to obtain the decrement fraction of the sample mass of 1.2%; the smokeless and sulfur-free firework stabilizer does not generate irritant gas in the firework setting-off process, and meets the market demand.
Example 2
A stabilizer for smokeless and sulfur-free fireworks comprises the following components in percentage by mass:
respectively adding 300g of magnesium stearate and 200g of dimethyl diphenyl urea into 1200g of ethanol under the stirring state, heating to 65 ℃, and continuously stirring until solutes are completely dissolved to obtain a solution A; adding 100g of ferrocene into 300g of dichloromethane (30%)/petroleum ether mixed solvent under stirring, and continuously stirring until the ferrocene is completely dissolved to obtain a solution B; adding the solution A into the solution B under the stirring state, heating to 83 ℃, adding 50g of montmorillonite and 350g of ethyl cellulose in sequence under the stirring state, and continuously stirring at the speed of 80rpm until the materials become uniform micelle; granulating the obtained uniform micelle with moderate hardness by using a double-screw granulator, and carrying out vacuum drying for 12 hours at the temperature of 60 ℃ to obtain a crude product of the smokeless and sulfur-free firework stabilizer; the obtained crude product of the stabilizer for the smokeless and sulfur-free fireworks is crushed by light pressure, and then is sieved by a 300-mesh copper sieve, and 979g of the stabilizer for the smokeless and sulfur-free fireworks is obtained by taking substances which penetrate through the copper sieve; carrying out thermal stability test on the smokeless sulfur-free firework stabilizer at 75 ℃ to obtain the weight loss fraction of 1.1% of the sample mass; the smokeless and sulfur-free firework stabilizer does not generate irritant gas in the firework setting-off process, and meets the market demand.
Example 3
A stabilizer for smokeless and sulfur-free fireworks comprises the following components in percentage by mass:
respectively adding 3.5kg of magnesium stearate and 2.2kg of dimethyl diphenyl urea into 15kg of ethanol under the stirring state, heating to 70 ℃, and continuously stirring until solutes are completely dissolved to obtain a solution A; adding 1kg of ferrocene into 3.5kg of dichloromethane (40%)/petroleum ether mixed solvent under stirring, and continuously stirring until the ferrocene is completely dissolved to obtain a solution B; adding the solution A into the solution B under the stirring state, heating to 90 ℃, adding 0.5kg of montmorillonite and 2.8kg of ethyl cellulose in sequence under the stirring state, and continuously stirring at the speed of 100rpm until the materials become uniform micelle; granulating the obtained uniform micelle with moderate hardness by using a double-screw granulator, and carrying out vacuum drying for 12 hours at the temperature of 60 ℃ to obtain a crude product of the smokeless and sulfur-free firework stabilizer; crushing the obtained crude product of the stabilizer of the smokeless and sulfur-free fireworks under light pressure, sieving the crushed product by a 300-mesh copper sieve, and taking substances which penetrate through the copper sieve to obtain 9.5kg of the stabilizer of the smokeless and sulfur-free fireworks; carrying out thermal stability test on the smokeless sulfur-free firework stabilizer at 75 ℃ to obtain the weight loss fraction of 1.0 percent of the sample mass; the smokeless and sulfur-free firework stabilizer does not generate irritant gas in the firework setting-off process, and meets the market demand.
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 (4)
1. A stabilizer for smokeless and sulfur-free fireworks is characterized in that: the components and the occupied mass percentage are as follows:
2. the preparation method for preparing the stabilizer of the smokeless sulfur-free firework according to claim 1 is characterized by comprising the following steps: the method comprises the following specific steps:
step one, weighing magnesium stearate, dimethyl diphenyl urea, ferrocene, montmorillonite and ethyl cellulose according to the mass ratio of a formula;
step two, respectively adding magnesium stearate and dimethyl diphenyl urea into ethanol under the stirring state, wherein the mass ratio of the magnesium stearate to the ethanol is 1 (3-5), heating to 60-70 ℃, and continuously stirring until solutes are completely dissolved to obtain a solution A;
step three, adding ferrocene into a dichloromethane/petroleum ether mixed solvent under a stirring state, wherein the mass ratio of the ferrocene to the mixed solvent is 1 (2-4), and continuously stirring until the ferrocene is completely dissolved to obtain a solution B;
step four, adding the solution A into the solution B under a stirring state, heating to 75-90 ℃, then adding montmorillonite and ethyl cellulose in sequence under the stirring state, and continuously stirring at a speed of 70-100 rpm until the materials become uniform micelle;
step five, granulating the uniform micelle with moderate hardness obtained in the step four by using a double-screw granulator, and performing vacuum drying for 12-24 hours at the temperature of 40-60 ℃ to obtain a crude product of the stabilizer of the smokeless and sulfur-free firework;
and step six, crushing the crude product of the smokeless and sulfur-free firework stabilizer obtained in the step five by light pressure, sieving the crushed product through a 300-mesh copper sieve, and taking substances which penetrate through the copper sieve to obtain the smokeless and sulfur-free firework stabilizer.
3. The method of claim 2, wherein: in the third step, the mass fraction of the dichloromethane in the dichloromethane/petroleum ether mixed solvent is 20-40%.
4. The method of claim 2, wherein: the judging method of the uniform micelle-like substance comprises the following steps: after the paste is extruded through a 20-mesh copper sieve, the paste is formed into continuous thin strips which are not adhered to each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911219707.0A CN110981652B (en) | 2019-12-03 | 2019-12-03 | Smokeless and sulfur-free firework stabilizer and preparation method thereof |
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| CN201911219707.0A CN110981652B (en) | 2019-12-03 | 2019-12-03 | Smokeless and sulfur-free firework stabilizer and preparation method thereof |
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| CN110981652A true CN110981652A (en) | 2020-04-10 |
| CN110981652B CN110981652B (en) | 2020-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028907A (en) * | 2021-05-20 | 2021-06-25 | 江西省李渡烟花集团有限公司 | High-brightness waterproof environment-friendly firework |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074940A (en) * | 1990-06-19 | 1991-12-24 | Nippon Oil And Fats Co., Ltd. | Composition for gas generating |
| CN101315264A (en) * | 2007-05-31 | 2008-12-03 | 昆山宝木产品设计有限公司 | Electro-optical fireworks |
| CN108299135A (en) * | 2018-01-29 | 2018-07-20 | 泸州北方化学工业有限公司 | A kind of smokelessly cold light firework medicament without ammonia odor |
-
2019
- 2019-12-03 CN CN201911219707.0A patent/CN110981652B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074940A (en) * | 1990-06-19 | 1991-12-24 | Nippon Oil And Fats Co., Ltd. | Composition for gas generating |
| CN101315264A (en) * | 2007-05-31 | 2008-12-03 | 昆山宝木产品设计有限公司 | Electro-optical fireworks |
| CN108299135A (en) * | 2018-01-29 | 2018-07-20 | 泸州北方化学工业有限公司 | A kind of smokelessly cold light firework medicament without ammonia odor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028907A (en) * | 2021-05-20 | 2021-06-25 | 江西省李渡烟花集团有限公司 | High-brightness waterproof environment-friendly firework |
| CN113028907B (en) * | 2021-05-20 | 2022-12-30 | 江西省李渡烟花集团有限公司 | High-brightness waterproof environment-friendly firework |
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| CN110981652B (en) | 2020-12-01 |
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