CN1386726A - Fireworks and firecrackers composition and its preparing process - Google Patents
Fireworks and firecrackers composition and its preparing process Download PDFInfo
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- CN1386726A CN1386726A CN 02134257 CN02134257A CN1386726A CN 1386726 A CN1386726 A CN 1386726A CN 02134257 CN02134257 CN 02134257 CN 02134257 A CN02134257 A CN 02134257A CN 1386726 A CN1386726 A CN 1386726A
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Abstract
A composition for firecrackers or fireworks contains oxidant (100 pts.wt.), metal sulfide (20-30 pts.wt.), pearlite (10-20 pts.wt.) and aluminium powder (10-40 pts.wt.). Said oxidant is nitrate and/or nitro compound, or their mixture. Said nitrate may be barium nitrate, strontium nitrate, aluminium nitrate, etc. Said nitro compound may be nitroguanidine, trinitrotoluene, etc. Its advantages are low impact and friction sensitivity, high safety and high effect on sound and colour light.
Description
Technical field the present invention relates to a kind of fireworks composition and manufacture method thereof, more particularly, relates to and a kind ofly makes oxygenant with nitrate and/or nitro-compound, thereby improve the fireworks composition and the manufacture method thereof of fireworks production safety performance.
Background technology in the prior art, the fireworks industry is rung quick-fried class fireworks (comprising the blast display shell) and is used Potcrate to make oxygenant, sulphur is made combustible agent, this class medicament very easily causes spontaneous burning and blast under the bump of mechanical effect, friction, casualty accident is of common occurrence, the reason of the high risk of Potcrate, sulphur confection is: 1, the fusing point of Potcrate is 356 ℃, and the fusing point of sulphur is 119 ℃, and the two very easily reacts; 2, the Tammann temperature of Potcrate is 42 ℃, and promptly its 42 ℃ just can be decomposed heat release, causes the medicine blast; 3, the easy oxidized surface of sulphur produces sulfuric acid, Potcrate is met acid and is produced chloric acid and dioxide peroxide, and they are higher than Potcrate activity, can make Potcrate, sulphur mixture system become extremely unsettled system, be subjected to extraneous bump or friction promptly to produce focus slightly, can excite burning or blast.Potcrate, sulphur prescription in the present firework medicament that uses, impact sensitivity is 100%, friction sensitivity is 100%, belongs to the high risk gunpowder.Existing Potcrate, sulphur prescription, because the fusing point of Potcrate is 356 ℃, temperature of combustion is low, and the medicament of chloracid potassium has brighter flame than other medicament.Therefore, though be that the mixing pyrotechnics composition of oxygenant has good inflammableness, combustibility, helps advantages such as look and economic and practical with Potcrate, danger and mechanical sensitivity height of its height are fatal weakness, thereby must improve; The applicant is that disclosed fireworks composition is made oxygenant with Potcrate in 02115155.5 the patent application at number of patent application, metallic sulfide is made combustible agent, though avoided use sulphur that safety performance is improved greatly, but it is very high that Potcrate is wherein made oxidant ratio, and making processes requires also strict.
It is the fireworks composition and the manufacture method thereof of high safety performance that summary of the invention the object of the present invention is to provide a kind of mechanical sensitivity.
In order to achieve the above object, the invention provides following technical scheme: develop a kind of fireworks composition, contain metallic sulfide, perlite and aluminium powder, be solid-state micro mist mixture, the composition of said composition and parts by weight are: 100 parts in oxygenant, metallic sulfide 20-30 part, perlite 10-20 part, aluminium powder 10-40 part, described oxygenant is nitrate and nitro-compound, wherein nitrate is nitrate of baryta, strontium nitrate, aluminum nitrate, lithium nitrate, zinc nitrate, ammonium nitrate or its analogue, nitro-compound is a urea nitrate, nitroguanidine, trotyl or its analogue, oxygenant can be the mixture of wherein any one or two kinds of arbitrary proportions of two compounds of nitrate or nitro-compound, also can be a kind of in this two compounds, the mixture of the arbitrary proportion of several or all kinds.Needed oxygen when described nitrate or nitro-compound provide explosive charge, their decomposition reaction is thermo-negative reaction, temperature in order to prevent to reduce explosive charge, should scope with wherein metallic sulfide content 20-30 part in, to avoid reducing the temperature of explosion time.Described metallic sulfide be barium sulphide, cupric sulfide, silver sulfide, strontium sulfide, antimony sulfide, zinc sulphide, Cadmium Sulfide, iron sulphide, sodium sulphite, sulfurated lime, tungsten sulfide or lead sulfide any one, the mixture of the arbitrary proportion of several or all kinds, they produce a kind of metal oxide when thermolysis, aluminium powder in the composition and these burning deposits yields aluminothermy effects, the temperature of combustion that is aluminium powder is brought up to about 2500 ℃ from 1800 ℃, thereby reduces the temperature of explosion problem because of heat absorption when having remedied nitrate or nitro-compound and decomposing.Described metallic sulfide decomposes emits sulfurous gas, enough gaseous detonations are provided, these metallic sulfides bigger than molten heat, the material that thermal conductivity is low forms effective thermal resistance on its surface, can delay the hot-fluid time, thereby make the thermoelectric difficulty of propagating to reach the purpose that reduces sensitivity.Nitrate among the present invention and nitro-compound can use separately, also can mix use with the arbitrary proportion of described other composition, as long as all can play expected effect in described scope.Aluminium powder in the composition is a light metal, during burning temperature up to 2000-2500 ℃ about, can improve quick-fried temperature to improve the brisance and the sound; Perlite is a weighting agent, can adjust medicament density after the adding and reduces cost.In specific implementation process, must add according to described ratio, the add-on of oxygenant must be considered oxygen balance, should provide enough oxygen to impel the oxygen requirement of metallic sulfide, aluminium combustion decomposition; When the content of metallic sulfide low excessively, then the gas volume of Chan Shenging very little, explosion time shredded paper rate variance, paper web may explode not broken, if the too high then gas volume of consumption is too much but because the caloric receptivity of sulfide is big, causes firecracker to explode not open and has reduced the sound because of having reduced quick-fried temperature; When the aluminium powder consumption is too much,, also improved cost simultaneously though can improve quick-fried temperature; Perlitic add-on too much can make firecracker sound loudness and paper breaking rate obviously descend.Therefore, each composition should add by aforesaid proportional range, could guarantee the quality of product.
The present invention's technical scheme preferably is: the oxygenant nitrate of baryta is the nitrate of baryta through recrystallization.At first, nitrate of baryta is a kind of oxygenant cheap and easy to get, and its fusing point is 592 ℃, and Tammann temperature is 160 ℃, can keep enough quick-fried temperature, is a kind of well-adapted oxygenant of the present invention, so should preferentially select for use; Secondly, general nitrate of baryta is the irregular polyhedrons crystallization, and spherical in shape through its crystal shape of nitrate of baryta may command of recrystallization, and the heat that is absorbed when decomposing thermopositive reaction only needs 50% of polyhedral crystalline nitrate of baryta, is more suitable in the oxygenant as firecracker.
The manufacture method of fireworks composition of the present invention: process comprises pulverizing, metallic sulfide surface treatment, drying, mixing and packing, described nitrate of baryta recrystallization process adopts Steppecd crystallization, nitrate of baryta is dissolved in crystallizing pond in 3-4 ℃ the refrigerated water, controlled temperature is at 4 ℃, 6 ℃, 8 ℃, 10 ℃, crystallization is 40 ± 5 minutes respectively, centrifuge dehydration, in 60-110 ℃ of oven dry, pulverize, contain 95% part by weight at least granularity be the spherical Barium Nitrate Crystal of 120-200 purpose.When the metallic sulfide surface treatment, be dried to weight in wet base 0.05%-0.2%, be crushed to granularity 120-200 order, the granularity of the silane coupling agent of the 1%-3% of adding metallic sulfide weight and the 2%-4% of metallic sulfide weight is the light calcium carbonate of 2-5 micron, mix under the temperature that is incorporated in 80-90 ℃ in kneader and handled at least 20 minutes, the silane coupling agent that uses is vinyl three (β methoxyethoxy) silane, γ-r-chloropropyl trimethoxyl silane, γ-mercaptopropyl trimethoxysilane, the mixture of any component arbitrary proportion of one or more of γ-Bing Jisanjiayangjiguiwan and vinyltriethoxysilane.This class material can be expressed as RsiX with general formula
3, wherein X is water-disintegrable functional group, and R is an organo-functional group, and treated metallic sulfide has higher activity.In the enforcement, take by weighing the weight of each composition in proportion, solid particulate is crushed to granularity 120-200 order and sieve, metallic sulfide surface treatment, drying, mixing and packing get final product.
Compared with prior art, the present invention has following tangible advantage: 1, owing to adopt nitrate of baryta to make the metal thiooxidant, improved fusing point, fusing point is up to 592 ℃, avoided the shortcoming of former Potcrate low-temperature decomposition, in addition the fusing point of metallic sulfide up to 800 ℃ (fusing point of sulphur is 119 ℃) even produce the focus whole medicine accident of blasting of can not igniting.Press QB/T1914.2-94 through national industrial explosive material quality supervision and test center and detect, its impact sensitivity reaches 0%, friction sensitivity 0%, and 365 ℃ of bursting points, rate of moisture absorption 0.5% is so it is safe; 2, adopt firecracker noisemaking rate, sound level, paper breaking rate and the coloured light of the composition production of described component all can reach state specified standards, thus practical.
Embodiment is following carries out more detailed description by specific embodiment to the present invention:
Embodiment 1
Get 100 parts of nitrate of baryta weight, be dissolved in crystallizing pond in 3-4 ℃ the refrigerated water, controlled temperature is at 4 ℃, 6 ℃, 8 ℃, 10 ℃, and crystallization is 40 minutes respectively, centrifuge dehydration, in 65 ℃ of oven dry, pulverize, the granularity that must contain 95% part by weight is the spherical Barium Nitrate Crystal of 180 purposes.Get 30 parts of barium sulphide weight, in kneader, be dried to weight in wet base below 0.2%, be crushed to granularity 150 orders, add 0.6 part of silane coupling agent vinyl triethoxyl silane (two metallic sulfide weight 3%) and granularity and be 0.9 part of light calcium carbonate below 5 microns (two metallic sulfide weight 4%), and add 10 parts of 150 purpose perlite powder weight, in kneader, mix under the temperature that is incorporated in 80 90 ℃ and handled 30 minutes, add granularity then and be 10 parts of 10 parts of 150 order perlite powder weight and aluminium powder weight, thorough mixing can be made.601.1 and 601.2 method detection composition according to GJB772A-970: impact sensitivity: weigh 10 kilograms, 25 centimetres of drop height points, measured value are 0%, friction sensitivity: gauge pressure 1.25MPa, and 60 ° of pivot angles, measured value are 0%.
Table 1 composite formula and qualitative data table look-up
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Nitrate of baryta | ??100 | ????50 | ????60 | ||
| Strontium nitrate | ????20 | ||||
| Aluminum nitrate | ????50 | ||||
| Lithium nitrate | ????5 | ????25 | |||
| Zinc nitrate | ????75 | ||||
| Ammonium nitrate | ????20 | ||||
| Urea nitrate | ????30 | ????15 | |||
| Nitroguanidine | ????10 | ||||
| Trotyl | ????40 | ||||
| Aluminium powder | ????10 | ????30 | ????20 | ????35 | ????40 |
| Barium sulphide * | ????30 | ????25 | ????20 | ????25 | ????30 |
| Perlite powder | ????10 | ????15 | ????15 | ????20 | ????20 |
| Impact sensitivity % | ????0 | ????0 | ????1 | ????2 | ????3 |
| Friction sensitivity % | ????0 | ????0 | ????2 | ????4 | ????5 |
Note: 1, * represents to have the metallic sulfide of exception; 2, the measure unit of each compound is parts by weight in the table.
Embodiment 2
Prescription and detected value see Table 1, and processing method, processing parameter and detection method be with example 1, but because of the no recrystallization process of dying without nitrate of baryta, add nitrate and nitro-compound granularity be 200 orders.
Embodiment 3
Prescription and detected value see Table 1, and processing method, processing parameter and detection method are with example 1, and it is zinc sulphide that institute adds metallic sulfide, and the nitrate of baryta recrystallization temperature is at 4 ℃, 6 ℃, 8 ℃, 10 ℃, and crystallization is 35 minutes respectively, and the granularity of each composition is 120 orders.
Embodiment 4
Prescription and detected value see Table 1, and processing method, processing parameter and detection method are with example 2, and metallic sulfide is the mixture of iron sulphide and cupric sulfide, and the granularity of individual composition is 200 orders.
Embodiment 5
Prescription and detected value see Table 1, and processing method, processing parameter and detection method are with example 1, and it is zinc sulphide that institute adds metallic sulfide, and the nitrate of baryta recrystallization temperature is at 4 ℃, 6 ℃, 8 ℃, 10 ℃, and crystallization is 45 minutes respectively.
Claims (3)
1, a kind of fireworks composition contains metallic sulfide, perlite and aluminium powder, is solid-state micro mist mixture, and it is characterized in that: the composition of composition and parts by weight are:
100 parts in oxygenant
Metallic sulfide 20-30 part
Perlite 10-20 part
Aluminium powder 10-40 part
Described oxygenant is nitrate and nitro-compound, wherein nitrate is nitrate of baryta, strontium nitrate, aluminum nitrate, lithium nitrate, zinc nitrate, ammonium nitrate or its analogue, nitro-compound is urea nitrate, nitroguanidine, trotyl or its analogue, oxygenant can be the mixture of wherein any one or two kinds of arbitrary proportions of two compounds of nitrate or nitro-compound, also can be the mixture of the arbitrary proportion of a kind of, several or all kinds in this two compounds.
2, fireworks composition according to claim 1 is characterized in that: the oxygenant nitrate of baryta is the nitrate of baryta through recrystallization.
3, the manufacture method of claim 1 or 2 described compositions, comprise pulverizing, metallic sulfide surface treatment, drying, mixing process, it is characterized in that: the nitrate of baryta recrystallization process adopts Steppecd crystallization, nitrate of baryta is dissolved in crystallizing pond in 3-4 ℃ the refrigerated water, successively controlled temperature was 4 ℃, 6 ℃, 8 ℃, 10 ℃ difference crystallization 40 ± 5 minutes, centrifuge dehydration, oven dry, pulverizing, getting the granularity that contains 95% part by weight at least is the spherical Barium Nitrate Crystal of 120-200 purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021342571A CN1147452C (en) | 2002-06-25 | 2002-06-25 | Fireworks and firecrackers composition and its preparing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021342571A CN1147452C (en) | 2002-06-25 | 2002-06-25 | Fireworks and firecrackers composition and its preparing process |
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| CN1386726A true CN1386726A (en) | 2002-12-25 |
| CN1147452C CN1147452C (en) | 2004-04-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265146B (en) * | 2008-04-27 | 2011-05-18 | 祁阳县梅溪镇第二鞭炮厂 | Environment-friendly type safety fireworks firecracker gun powder oxidant |
| CN100999429B (en) * | 2007-01-09 | 2012-07-25 | 浏阳市庆典烟花有限公司 | Glowing ray flash star for fireworks and its making method |
| CN105777459A (en) * | 2014-12-26 | 2016-07-20 | 湖北航天化学技术研究所 | Low pressure exponent and low residue fuel gas generating agent and preparing method thereof |
| CN106277018A (en) * | 2016-07-01 | 2017-01-04 | 中国人民武装警察部队工程大学 | A kind of strontium nitrate dampproof method, moistureproof strontium nitrate and firework product |
-
2002
- 2002-06-25 CN CNB021342571A patent/CN1147452C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999429B (en) * | 2007-01-09 | 2012-07-25 | 浏阳市庆典烟花有限公司 | Glowing ray flash star for fireworks and its making method |
| CN101265146B (en) * | 2008-04-27 | 2011-05-18 | 祁阳县梅溪镇第二鞭炮厂 | Environment-friendly type safety fireworks firecracker gun powder oxidant |
| CN105777459A (en) * | 2014-12-26 | 2016-07-20 | 湖北航天化学技术研究所 | Low pressure exponent and low residue fuel gas generating agent and preparing method thereof |
| CN105777459B (en) * | 2014-12-26 | 2018-06-19 | 湖北航天化学技术研究所 | Low residue gas generator propellant of a kind of low pressure index and preparation method thereof |
| CN106277018A (en) * | 2016-07-01 | 2017-01-04 | 中国人民武装警察部队工程大学 | A kind of strontium nitrate dampproof method, moistureproof strontium nitrate and firework product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1147452C (en) | 2004-04-28 |
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