CN109232141A - Safety and environmental protection fireworks composite material and preparation method - Google Patents
Safety and environmental protection fireworks composite material and preparation method Download PDFInfo
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- CN109232141A CN109232141A CN201811277938.2A CN201811277938A CN109232141A CN 109232141 A CN109232141 A CN 109232141A CN 201811277938 A CN201811277938 A CN 201811277938A CN 109232141 A CN109232141 A CN 109232141A
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
- C06B29/02—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
- C06B29/16—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound
- C06B29/20—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound the compound being nitrocellulose
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
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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
- C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention discloses a kind of safety and environmental protection fireworks composite material and preparation methods, raw material including following parts by weight: modified nitrocellulose, terephthalic acid (TPA), crushed crude pearlite, modifying carbon powder, potassium hyperchlorate, aluminium hydroxide, antistatic acrylic resin, potassium hydroxide, potassium hydrogen phthalate, stabilization agent, single original washing powder, strong agent powder and water, preparation method are as follows: raw material preparation, prepare dispersion liquid, prepare compound material, firework launching medicine molding and it is filling, the present invention is to be modified nitrocellulose, crushed crude pearlite and modifying carbon powder are primary raw material, in burning, smog occurrence quantity and air residue are minimum, non smoke is estimated to generate, and sulfide is not contained wherein, do not have vulcanization tail gas after making it burn to generate, with good environmental-protecting performance, modified nitrocellulose simultaneously, have after crushed crude pearlite and the combination of modifying carbon powder Good humidity resistance, drug substance stable can store and transport for a long time, also ensure the safety of production inventory and transport.
Description
Technical field
The present invention relates to fireworks production technical field, specially a kind of safety and environmental protection fireworks composite material and its preparation side
Method.
Background technique
Black powder or propellant powder are the mainly risk raw materials for producing fireworks and firecrackers, in production, storage, are transported
Risk is bigger in journey, is easy to occur accident, and the propellant powder or powder composition one of the fireworks and firecrackers of traditional mode of production at present
As use a sulphur, dinitro, the mode of three charcoals.Be potassium nitrate be 70% or more, sulphur 10%, remaining is charcoal, is being fired
A large amount of black smog can be generated when burning, have big hidden danger moreover, bringing to safety in production.At present in actual production, fireworks hair
Medicine is penetrated always using the black powder (military project nitre) being made of three kinds of potassium nitrate, charcoal and sulphur materials, can be generated in burning
A large amount of smog influence the firework display effect of fireworks, and remain the oxide and residue of a large amount of carbon, sulphur, potassium in air, seriously
Pollute environment.
So how to design a kind of safety and environmental protection fireworks composite material and preparation method, becoming us will currently be solved
The problem of.
Summary of the invention
The purpose of the present invention is to provide a kind of safety and environmental protection fireworks composite material and preparation methods, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the invention provides the following technical scheme: a kind of safety and environmental protection fireworks composite material, including with
The raw material of lower parts by weight: modified nitrocellulose 30-35 parts, 15-20 parts of terephthalic acid (TPA), 5-8 parts of crushed crude pearlite, modifying carbon
3-5 parts of powder, 3-9 parts of potassium hyperchlorate, 8-10 parts of aluminium hydroxide, 8-10 parts of antistatic acrylic resin, 6-10 parts of potassium hydroxide, benzene
2-4 parts of diformazan potassium hydrogen phthalate, 3-5 parts of stabilization agent, single 2-4 parts of original washing powder, 9-10 parts of strong agent powder and 10-15 parts of water.
According to the above technical scheme, the formula of the modified nitrocellulose includes nitrocellulose and additive, addition
Agent includes light stabilizer, fire retardant, antistatic agent, colorant and dispersing agent, and light stabilizer is 2,4-DihydroxyBenzophenone,
Fire retardant is aluminium hydroxide, and antistatic agent is sodium alkyl sulfonate, and colorant is isoindolone, and dispersing agent is dodecyl sulphate
Sodium.
According to the above technical scheme, the preparation method of the antistatic acrylic resin is investment in reaction kettle at normal temperature
N-butanol is warming up to 90-100 degree, stirs evenly, and then puts into polyethylene oxide, polyether ester amides, the methyl-prop containing quaternary ammonium salt
Olefin(e) acid ester copolymer and organosilicon containing hydrophilic group, stir evenly, then the polyallyl polyoxy of acetoxyl group sealing end is at the uniform velocity added dropwise
Vinethene and poly- methylhydrogen silicone, alkanolamine, alkanolamide, fatty acid, fatty alcohol and alkyl phenol, control are small at 4-5
When it is interior drip off, be warming up to 190-220 degree after dripping off, heat preservation is cooled to 70-80 degree and puts into water after 3-4 hour, cool to 40- again
50 degree, neutralizer is put into, is stirred 40-50 minutes, discharging is packaged to be antistatic acrylic resin.
According to the above technical scheme, the preparation method of the terephthalic acid (TPA) is to be with acetic acid using paraxylene as raw material
Solvent, cobalt acetate and manganese acetate are catalyst, and bromide is promotor, in 10-15MPa and 220-240 DEG C of pressure and temperature
Under the conditions of, it is passed through compressed air and brings it about oxidation reaction, p xylene oxidation is at generation crude terephthalic acid and 4- carboxyl benzene
Crude terephthalic acid and 4- carboxyl benzaldehyde are added in pure water and are dissolved by formaldehyde, under the catalysis of palladium catalyst, are passed through hydrogen
Gas makes 4- carboxyl benzaldehyde be reduced into methyl benzoic acid, makes methyl benzoic acid under conditions of 16-19MPa and 283-295 DEG C
It is dissolved in pure water, then recrystallizes, separate and dry, p-methylbenzoic acid is separated, obtain the pure terephthalic acid (PTA) of high-purity.
According to the above technical scheme, the modifying carbon powder includes following mass percent component: activator 65-85%,
Dispersing agent 10-16%, surface modifier 1-2%, carbon black 2-10%, carbon fiber 4-6%, phthalic anhydride 5-15%, face powder 2-10% and
Graphite powder 2-10% weighs each raw material component in each component ratio of formula 1-3, is added in blender, with 2000-2500r/
It is uniformly mixed under the revolving speed of min, sieving, sieve takes 120 mesh minus sieve powders, obtains modifying carbon powder.
A kind of preparation method of safety and environmental protection fireworks composite material, includes the following steps:
1) raw material preparation: weighing raw material according to the recipe ratio of raw material, spare；
2) it prepares dispersion liquid: commercially available terephthalic acid (TPA), potassium hyperchlorate and potassium hydroxide is added in batch mixer, with
10-20min is mixed under the revolving speed of 2000r/min, after mixing ultrasonic disperse 1-2h, obtain dispersion liquid；
3) compound material is prepared: by modified nitrocellulose, crushed crude pearlite, modifying carbon powder, aluminium hydroxide and phthalic acid
Hydrogen potassium is added in batch mixer together, is mixed 20-30min under the revolving speed of 1800r/min, is obtained compound material；
4) firework launching medicine forms: by dispersion liquid, compound material and a certain amount of antistatic acrylic resin, stabilization agent, list
It is encased in autoclave after original washing powder and the mixing of strong agent powder, at 36-41 DEG C, is continually fed into carbon dioxide to supercritical state
State discharges after continuing 2-3h, and stands 3-4h at 50-60 DEG C, obtains firework launching medicine；
5) filling: by molding firework launching medicine canning and warehousing.
Compared with prior art, the beneficial effects of the present invention are: the present invention is to be modified nitrocellulose, crushed crude pearlite and change
Property carbon powder be primary raw material, in burning, smog occurrence quantity and air residue are minimum, and range estimation non smoke generates, and wherein
Without containing sulfide, do not have vulcanization tail gas after so that it is burnt and generate, there is good environmental-protecting performance, while modified cellulose nitrate
There is good humidity resistance after element, crushed crude pearlite and the combination of modifying carbon powder, drug substance stable can be stored and be transported for a long time,
It also ensures the safety of production inventory and transport, effectively improves the convenience used, be viscous with antistatic acrylic resin
Attached dose, not only there is good adhesiveness, while also there is good antistatic performance, to effectively improve the peace used
Quan Xing.
Detailed description of the invention
Fig. 1 is the preparation method flow diagram of safety and environmental protection fireworks composite material of the invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1: referring to Fig. 1, the present invention provides a kind of safety and environmental protection fireworks composite material, including following parts by weight
Raw material: modified 30 parts of nitrocellulose, 15 parts of terephthalic acid (TPA), 5 parts of crushed crude pearlite, 3 parts of modifying carbon powder, 3 parts of potassium hyperchlorate,
8 parts of aluminium hydroxide, 8 parts of antistatic acrylic resin, 6 parts of potassium hydroxide, 2 parts of potassium hydrogen phthalate, 3 parts of stabilization agent, single original washing powder 2
Part, 9 parts of strong agent powder and 10 parts of water.
According to the above technical scheme, the formula of modified nitrocellulose includes nitrocellulose and additive, additive packet
Light stabilizer, fire retardant, antistatic agent, colorant and dispersing agent are included, light stabilizer is 2,4-DihydroxyBenzophenone, fire-retardant
Agent is aluminium hydroxide, and antistatic agent is sodium alkyl sulfonate, and colorant is isoindolone, and dispersing agent is lauryl sodium sulfate.
According to the above technical scheme, the preparation method of antistatic acrylic resin is the positive fourth of investment in reaction kettle at normal temperature
Alcohol is warming up to 90-100 degree, stirs evenly, and then puts into polyethylene oxide, polyether ester amides, the methacrylic acid containing quaternary ammonium salt
Ester copolymer and organosilicon containing hydrophilic group, stir evenly, then the polyallyl polyoxyethylene of acetoxyl group sealing end is at the uniform velocity added dropwise
Ether and poly- methylhydrogen silicone, alkanolamine, alkanolamide, fatty acid, fatty alcohol and alkyl phenol controlled within 4-5 hour
It drips off, 190-220 degree is warming up to after dripping off, heat preservation is cooled to 70-80 degree investment water, cools to 40-50 again after 3-4 hours
Degree puts into neutralizer, stirs 40-50 minutes, and discharging is packaged to be antistatic acrylic resin.
According to the above technical scheme, the preparation method of terephthalic acid (TPA) be using paraxylene as raw material, using acetic acid as solvent,
Cobalt acetate and manganese acetate are catalyst, and bromide is promotor, in 10-15MPa and 220-240 DEG C of pressure and temperature condition
Under, be passed through compressed air and bring it about oxidation reaction, p xylene oxidation at generating crude terephthalic acid and 4- carboxyl benzaldehyde,
Crude terephthalic acid and 4- carboxyl benzaldehyde are added in pure water and are dissolved, under the catalysis of palladium catalyst, is passed through hydrogen,
Under conditions of 16-19MPa and 283-295 DEG C, so that 4- carboxyl benzaldehyde is reduced into methyl benzoic acid, be dissolved in methyl benzoic acid pure
It in water, then recrystallizes, separates and dry, p-methylbenzoic acid is separated, obtain the pure terephthalic acid (PTA) of high-purity.
According to the above technical scheme, modifying carbon powder includes following mass percent component: activator 65-85%, dispersion
Agent 10-16%, surface modifier 1-2%, carbon black 2-10%, carbon fiber 4-6%, phthalic anhydride 5-15%, face powder 2-10% and graphite
Powder 2-10% weighs each raw material component in each component ratio of formula 1-3, is added in blender, with 2000-2500r/min
Revolving speed under be uniformly mixed, sieving, sieve take 120 mesh minus sieve powders, obtain modifying carbon powder.
A kind of preparation method of safety and environmental protection fireworks composite material, includes the following steps:
1) raw material preparation: weighing raw material according to the recipe ratio of raw material, spare；
2) it prepares dispersion liquid: commercially available terephthalic acid (TPA), potassium hyperchlorate and potassium hydroxide is added in batch mixer, with
10-20min is mixed under the revolving speed of 2000r/min, after mixing ultrasonic disperse 1-2h, obtain dispersion liquid；
3) compound material is prepared: by modified nitrocellulose, crushed crude pearlite, modifying carbon powder, aluminium hydroxide and phthalic acid
Hydrogen potassium is added in batch mixer together, is mixed 20-30min under the revolving speed of 1800r/min, is obtained compound material；
4) firework launching medicine forms: by dispersion liquid, compound material and a certain amount of antistatic acrylic resin, stabilization agent, list
It is encased in autoclave after original washing powder and the mixing of strong agent powder, at 36-41 DEG C, is continually fed into carbon dioxide to supercritical state
State discharges after continuing 2-3h, and stands 3-4h at 50-60 DEG C, obtains firework launching medicine；
5) filling: by molding firework launching medicine canning and warehousing.
Embodiment 2: referring to Fig. 1, the present invention provides a kind of safety and environmental protection fireworks composite material, including following parts by weight
Raw material: modified 35 parts of nitrocellulose, 20 parts of terephthalic acid (TPA), 8 parts of crushed crude pearlite, 5 parts of modifying carbon powder, 9 parts of potassium hyperchlorate,
10 parts of aluminium hydroxide, 10 parts of antistatic acrylic resin, 10 parts of potassium hydroxide, 4 parts of potassium hydrogen phthalate, 5 parts of stabilization agent, Dan Ji
4 parts of powder, 10 parts of strong agent powder and 15 parts of water.
According to the above technical scheme, the formula of modified nitrocellulose includes nitrocellulose and additive, additive packet
Light stabilizer, fire retardant, antistatic agent, colorant and dispersing agent are included, light stabilizer is 2,4-DihydroxyBenzophenone, fire-retardant
Agent is aluminium hydroxide, and antistatic agent is sodium alkyl sulfonate, and colorant is isoindolone, and dispersing agent is lauryl sodium sulfate.
According to the above technical scheme, the preparation method of antistatic acrylic resin is the positive fourth of investment in reaction kettle at normal temperature
Alcohol is warming up to 90-100 degree, stirs evenly, and then puts into polyethylene oxide, polyether ester amides, the methacrylic acid containing quaternary ammonium salt
Ester copolymer and organosilicon containing hydrophilic group, stir evenly, then the polyallyl polyoxyethylene of acetoxyl group sealing end is at the uniform velocity added dropwise
Ether and poly- methylhydrogen silicone, alkanolamine, alkanolamide, fatty acid, fatty alcohol and alkyl phenol controlled within 4-5 hour
It drips off, 190-220 degree is warming up to after dripping off, heat preservation is cooled to 70-80 degree investment water, cools to 40-50 again after 3-4 hours
Degree puts into neutralizer, stirs 40-50 minutes, and discharging is packaged to be antistatic acrylic resin.
According to the above technical scheme, the preparation method of terephthalic acid (TPA) be using paraxylene as raw material, using acetic acid as solvent,
Cobalt acetate and manganese acetate are catalyst, and bromide is promotor, in 10-15MPa and 220-240 DEG C of pressure and temperature condition
Under, be passed through compressed air and bring it about oxidation reaction, p xylene oxidation at generating crude terephthalic acid and 4- carboxyl benzaldehyde,
Crude terephthalic acid and 4- carboxyl benzaldehyde are added in pure water and are dissolved, under the catalysis of palladium catalyst, is passed through hydrogen,
Under conditions of 16-19MPa and 283-295 DEG C, so that 4- carboxyl benzaldehyde is reduced into methyl benzoic acid, be dissolved in methyl benzoic acid pure
It in water, then recrystallizes, separates and dry, p-methylbenzoic acid is separated, obtain the pure terephthalic acid (PTA) of high-purity.
According to the above technical scheme, modifying carbon powder includes following mass percent component: activator 65-85%, dispersion
Agent 10-16%, surface modifier 1-2%, carbon black 2-10%, carbon fiber 4-6%, phthalic anhydride 5-15%, face powder 2-10% and graphite
Powder 2-10% weighs each raw material component in each component ratio of formula 1-3, is added in blender, with 2000-2500r/min
Revolving speed under be uniformly mixed, sieving, sieve take 120 mesh minus sieve powders, obtain modifying carbon powder.
A kind of preparation method of safety and environmental protection fireworks composite material, includes the following steps:
1) raw material preparation: weighing raw material according to the recipe ratio of raw material, spare；
2) it prepares dispersion liquid: commercially available terephthalic acid (TPA), potassium hyperchlorate and potassium hydroxide is added in batch mixer, with
10-20min is mixed under the revolving speed of 2000r/min, after mixing ultrasonic disperse 1-2h, obtain dispersion liquid；
3) compound material is prepared: by modified nitrocellulose, crushed crude pearlite, modifying carbon powder, aluminium hydroxide and phthalic acid
Hydrogen potassium is added in batch mixer together, is mixed 20-30min under the revolving speed of 1800r/min, is obtained compound material；
4) firework launching medicine forms: by dispersion liquid, compound material and a certain amount of antistatic acrylic resin, stabilization agent, list
It is encased in autoclave after original washing powder and the mixing of strong agent powder, at 36-41 DEG C, is continually fed into carbon dioxide to supercritical state
State discharges after continuing 2-3h, and stands 3-4h at 50-60 DEG C, obtains firework launching medicine；
5) filling: by molding firework launching medicine canning and warehousing.
Experimental example:
Experimental subjects: using firework launching medicine obtained by the embodiment of the present invention as experimental group one, experimental group two and experiment
Group three, the firework launching medicine chosen on the market is contrast groups one, and contrast groups one use NY757-2003 firework launching medicine.
Experiment purpose: the test impact sensitivity of each group firework launching medicine, friction sensitivity, ignition temperature, hydroscopicity and 75 DEG C
Stability.
Experimental method: according to national firework launching medicine examination criteria and national standard SN/T0306.4-2006, by this experimental group system
Firework launching medicine, contrast groups one firework launching medicine, using special instrument to each group firework launching medicine carry out impact sensitivity,
The test of friction sensitivity, ignition temperature, hydroscopicity and 75 DEG C of stability, and record experimental result.
Experimental result table:
By the above experimental result table it is found that the impact sensitivity of firework launching medicine of the invention, friction sensitivity and hydroscopicity are equal
Lower than existing firework launching medicine in the market, while ignition temperature is higher than existing firework launching medicine in the market, makes it have good
Good performance.
Based on above-mentioned, it is an advantage of the current invention that the present invention is to be modified nitrocellulose, crushed crude pearlite and modifying carbon powder
For primary raw material, in burning, smog occurrence quantity and air residue are minimum, and range estimation non smoke generates, and does not contain sulphur wherein
Compound does not have vulcanization tail gas and generates after so that it is burnt, have good environmental-protecting performance, while modified nitrocellulose, pearl
There is good humidity resistance after rock powder and the combination of modifying carbon powder, drug substance stable can be stored and be transported for a long time, also ensure
The safety of production inventory and transport effectively improves the convenience used, using antistatic acrylic resin as adhesive, not only
With good adhesiveness, while also there is good antistatic performance, to effectively improve the safety used.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of safety and environmental protection fireworks composite material, it is characterised in that: the raw material including following parts by weight: modified nitrocellulose
30-35 parts, 15-20 parts of terephthalic acid (TPA), 5-8 parts of crushed crude pearlite, 3-5 parts of modifying carbon powder, 3-9 parts of potassium hyperchlorate, hydroxide
8-10 parts of aluminium, 8-10 parts of antistatic acrylic resin, 6-10 parts of potassium hydroxide, 2-4 parts of potassium hydrogen phthalate, 3-5 parts of stabilization agent,
Single original washing powder 2-4 parts, 9-10 parts of strong agent powder and 10-15 parts of water.
2. a kind of safety and environmental protection fireworks composite material according to claim 1, it is characterised in that: the modified nitrocellulose
Formula includes nitrocellulose and additive, and additive includes light stabilizer, fire retardant, antistatic agent, colorant and dispersion
Agent, light stabilizer are 2,4-DihydroxyBenzophenone, and fire retardant is aluminium hydroxide, and antistatic agent is sodium alkyl sulfonate, colorant
For isoindolone, dispersing agent is lauryl sodium sulfate.
3. a kind of safety and environmental protection fireworks composite material according to claim 1, it is characterised in that: the antistatic acrylic resin
Preparation method be to put into n-butanol in reaction kettle at normal temperature, be warming up to 90-100 degree, stir evenly, then put into polycyclic oxygen
Ethane, polyether ester amides, the methacrylate copolymer containing quaternary ammonium salt and the organosilicon containing hydrophilic group, stir evenly, then even
The polyallyl polyoxyethylene ether and poly- methylhydrogen silicone, alkanolamine, alkanolamide, fat of acetoxyl group sealing end is added dropwise in speed
Acid, fatty alcohol and alkyl phenol, control drip off within 4-5 hour, and 190-220 degree is warming up to after dripping off, and heat preservation is dropped after 3-4 hours
Temperature to 70-80 degree puts into water, cools to 40-50 degree again, puts into neutralizer, stirs 40-50 minute, discharge be packaged to be resist it is quiet
Electric acrylic resin.
4. a kind of safety and environmental protection fireworks composite material according to claim 1, it is characterised in that: the preparation of the terephthalic acid (TPA)
Method is using paraxylene as raw material, and using acetic acid as solvent, cobalt acetate and manganese acetate are catalyst, and bromide is promotor,
Under the conditions of 10-15MPa and 220-240 DEG C of pressure and temperature, it is passed through compressed air and brings it about oxidation reaction, paraxylene oxygen
Chemical conversion generates crude terephthalic acid and 4- carboxyl benzaldehyde, crude terephthalic acid and 4- carboxyl benzaldehyde is added to molten in pure water
Solution, under the catalysis of palladium catalyst, is passed through hydrogen, under conditions of 16-19MPa and 283-295 DEG C, makes 4- carboxyl benzaldehyde also
Original is dissolved in methyl benzoic acid in pure water at methyl benzoic acid, then recrystallizes, and separates and dries, by p-methylbenzoic acid point
From obtaining the pure terephthalic acid (PTA) of high-purity.
5. a kind of safety and environmental protection fireworks composite material according to claim 1, it is characterised in that: the modifying carbon powder include with
Lower mass percent component: activator 65-85%, dispersing agent 10-16%, surface modifier 1-2%, carbon black 2-10%, carbon fiber
4-6%, phthalic anhydride 5-15%, face powder 2-10% and graphite powder 2-10% are tieed up, weighs each raw material group in each component ratio of formula 1-3
Point, it is added in blender, to be uniformly mixed under the revolving speed of 2000-2500r/min, sieving, sieve takes 120 mesh minus sieve powders, i.e.,
Modifying carbon powder is made.
6. a kind of preparation method of safety and environmental protection fireworks composite material, characterized by the following steps:
1) raw material preparation: weighing raw material according to the recipe ratio of raw material, spare；
2) it prepares dispersion liquid: commercially available terephthalic acid (TPA), potassium hyperchlorate and potassium hydroxide being added in batch mixer, with 2000r/
10-20min is mixed under the revolving speed of min, after mixing ultrasonic disperse 1-2h, obtain dispersion liquid；
3) compound material is prepared: by modified nitrocellulose, crushed crude pearlite, modifying carbon powder, aluminium hydroxide and potassium hydrogen phthalate
It is added in batch mixer together, mixes 20-30min under the revolving speed of 1800r/min, obtain compound material；
4) firework launching medicine forms: by dispersion liquid, compound material and a certain amount of antistatic acrylic resin, stabilization agent, single original washing powder
It is encased in autoclave with after the mixing of strong agent powder, at 36-41 DEG C, is continually fed into carbon dioxide to supercriticality, holds
It discharges after continuous 2-3h, and stands 3-4h at 50-60 DEG C, obtain firework launching medicine；
5) filling: by molding firework launching medicine canning and warehousing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981668A (en) * | 2019-12-10 | 2020-04-10 | 江西吉润花炮新材料科技有限公司 | Moisture-proof smokeless sulfur-free cold firework chemical and preparation method thereof |
| CN110981669A (en) * | 2019-12-20 | 2020-04-10 | 江西吉润花炮新材料科技有限公司 | Low-sensitivity environment-friendly firework chemical and preparation method thereof |
| CN113233945A (en) * | 2021-06-25 | 2021-08-10 | 湖南恒达烟花有限公司 | Smokeless propellant for fireworks |
| CN113357969A (en) * | 2021-07-16 | 2021-09-07 | 湖南恒达烟花有限公司 | Fireworks are touched off in high altitude with waterproof function |
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| CN110981669A (en) * | 2019-12-20 | 2020-04-10 | 江西吉润花炮新材料科技有限公司 | Low-sensitivity environment-friendly firework chemical and preparation method thereof |
| CN113233945A (en) * | 2021-06-25 | 2021-08-10 | 湖南恒达烟花有限公司 | Smokeless propellant for fireworks |
| CN113357969A (en) * | 2021-07-16 | 2021-09-07 | 湖南恒达烟花有限公司 | Fireworks are touched off in high altitude with waterproof function |
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