CN113683470A - Safety and environment-friendly method for improving nail shooting and powder charging manufacturing - Google Patents
Safety and environment-friendly method for improving nail shooting and powder charging manufacturing Download PDFInfo
- Publication number
- CN113683470A CN113683470A CN202110965901.4A CN202110965901A CN113683470A CN 113683470 A CN113683470 A CN 113683470A CN 202110965901 A CN202110965901 A CN 202110965901A CN 113683470 A CN113683470 A CN 113683470A
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- Prior art keywords
- improving
- adhesive
- nail
- safe
- manufacture
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Classifications
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/18—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
- C06B25/20—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition with a non-explosive or a non-explosive or a non-thermic component
-
- 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
- C06B21/0025—Compounding the ingredient the ingredient being a polymer bonded explosive or thermic component
-
- 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
- C06B21/0066—Shaping the mixture by granulation, e.g. flaking
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention provides a safe and environment-friendly method for improving nail shooting and charging manufacturing, which comprises the following steps: (1) preparing a solution, namely preparing an aqueous solution with the mass concentration of 0.3-4% by absolute dry weight of the adhesive; preparing a stabilizing agent diphenylamine into a diphenylamine suspension with a 5-30 mass percent aqueous solution of an adhesive; (2) granulating, namely putting cellulose nitrate into a stirrer, gradually adding 0.8-1.8% of diphenylamine suspension and 0.5-4% of adhesive aqueous solution into the stirrer, and mixing and granulating at room temperature; (3) drying and sieving, namely drying and sieving the granulated mixture at the temperature of 20-75 ℃; (4) and (4) compression molding, namely, taking the material prepared in the step (3) to be compressed and molded in a tablet press to obtain tablets with required sizes. The invention further eliminates the dangerous source and the pollution source of the volatile solvent, and simultaneously reduces the nitration degree of the cellulose nitrate, thereby being beneficial to improving the intrinsic safety and the intrinsic environmental protection of the product in production, use, storage and transportation.
Description
Technical Field
The invention relates to the technical field of nail shooting fastening, in particular to a safe and environment-friendly method for improving nail shooting and powder charging manufacturing.
Background
The invention patent CN 102675007B discloses that the industrial transformation is completed after several years of efforts, and the product is approved by the market. With the increasingly strict requirements of society on safety and environmental protection. The invention is further improved on the basis of the patent CN 102675007B, and on the basis of eliminating the dangerous source of the primer, the volatile solvent is abandoned, so that the dangerous source and the pollution source of the solvent are eliminated.
The CN 102675007B has higher requirements (213 ml/g-220 ml/g) on the nitration degree of the cellulose nitrate, the risk is higher when the nitration degree is higher, and the required firing rate and power can be achieved through matching of the nitration degree distribution, the charging parameters and the charging structure.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a safe and environment-friendly method for improving the manufacture of nail shooting explosive charge, and further eliminate or reduce the dangerous source and the pollution source in the explosive charge manufacture. The technical scheme adopted by the invention is as follows:
a safe and environmentally friendly method of improving the manufacture of a nail charge, wherein: the method comprises the following steps:
(1) preparing a solution, namely preparing an aqueous solution with the mass concentration of 0.3-4% by absolute dry weight of the adhesive; preparing a stabilizing agent diphenylamine into a diphenylamine suspension with a 5-30 mass percent aqueous solution of an adhesive;
(2) granulating, namely putting cellulose nitrate containing more than 25 percent of water into a stirrer, gradually adding diphenylamine suspension containing 0.8-1.8 percent of cellulose nitrate in absolute dry weight and 0.5-4 percent of adhesive aqueous solution into the stirrer according to absolute dry weight of the cellulose nitrate, and mixing and granulating for 15-50 minutes at room temperature;
(3) drying and sieving, namely drying the granulated mixture prepared in the step (2) at 20-75 ℃ until the moisture content is 5-20%, and sieving the dried material to obtain a 10-80 mesh material for later use;
(4) compression molding, namely, taking the material prepared in the step (3) to be compressed and molded in a tablet press to obtain tablets with required size, wherein the density of the pressed tablets is 1.2g/cm3~1.5g/cm3Drying the mixture at 20-75 ℃ until the water content is 0.6-1.5%.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the adhesive in the step (1) is one of cellulose ether, aqueous amino acid emulsion, aqueous acrylic acid emulsion, polyvinyl alcohol solution or xanthan gum solution.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the binder in the step (1) is cellulose ether.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the cellulose ether (1) is one or more of sodium carboxymethylcellulose, methylcellulose, hydroxypropyl methylcellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the cellulose ether is hydroxypropyl methyl cellulose.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the viscosity of the adhesive in the step (1) is 4000cps to 200000 cps.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the viscosity of the adhesive in the step (1) is 40000cps to 200000 cps.
Preferably, the method of improving the safety and environmental protection of the manufacture of a nail charge, wherein: the nitration degree of the cellulose nitrate in the step (2) is more than or equal to 200ml/g, the fine breaking degree is 60 ml-85 m |, and the water content is 25% -45%.
The invention has the advantages that:
(1) the invention improves the safe and environment-friendly method for nail shooting and charging manufacturing, further eliminates the dangerous source and the pollution source of the volatile solvent, and simultaneously reduces the nitration degree of the cellulose nitrate, thereby being beneficial to improving the intrinsic safety and the intrinsic environment protection of the product in production, use, storage and transportation.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The ingredients are mixed according to the following formula in absolute dry weight (Kg)
The components of the charging base material:
NC (nitration degree 201ml/g, fineness 70ml) 69;
DPA (stabilizer) 0.8;
H2O 36；
a binder component:
HPMC (viscosity 40000cps with water content less than or equal to 5%) 1.2;
H2O 98.8；
(1) solution preparation: the adhesive is prepared into an aqueous solution with the mass concentration of 1.2% in an absolute dry amount; preparing a suspension with the mass concentration of 10% by using the adhesive under the heating and stirring of a stabilizer diphenylamine;
(2) and (3) granulation: adding cellulose nitrate into a stirrer, and gradually adding 1.2% diphenylamine suspension with the absolute dry quantity of NC and 1.2% HPMC aqueous solution with the absolute dry quantity of NC into the stirrer; mixing and granulating for 30 minutes at room temperature;
(3) drying and sieving: drying the mixture obtained after granulation in the step 2 at the temperature of 20-75 ℃ until the moisture content is 6%; sieving the dried materials to obtain 10-80 meshes of materials for later use;
(4) and (3) pressing and forming: pressing the material prepared in the step 3 in a tabletting machine to obtain tablets, wherein the density of the pressed tablets is 1.4g/cm3Drying the mixture at the temperature of 20-75 ℃ until the water content is 0.8%;
the indexes of the obtained finished product of the medicine granules are as follows:
the component NC is 96.9 percent; 1.1 percent of DPA; 1.2 percent of HPMC;
moisture content 0.8%;
the size of the medicine particles is phi 6.6X 4.0;
the density of the medicine particles is 1.39g/cm3；
The percussion rate is more than 99.6 percent;
example 2
The ingredients are mixed according to the following formula in absolute dry weight (Kg)
The components of the charging base material:
NC (nitration degree 201ml/g, fineness 70ml) 69;
DPA (stabilizer) 0.8;
H2O36；
a binder component:
1.0 of xanthan gum;
0.5 of aqueous amino acid emulsion;
H2O 98.8；
(1) solution preparation: the adhesive is prepared into an aqueous solution with the mass concentration of 1.5% in an absolute dry amount; preparing a suspension with the mass concentration of 10% by using the adhesive under the heating and stirring of a stabilizer diphenylamine;
(2) and (3) granulation: adding cellulose nitrate into a stirrer, and gradually adding 1.2% diphenylamine suspension of NC absolute dry weight and 1.2% adhesive aqueous solution of absolute dry weight into the stirrer; mixing and granulating for 30 minutes at room temperature;
(3) drying and sieving: drying the granulated mixture prepared in the step (2) at 20-75 ℃ until the moisture content is 6%; sieving the dried materials to obtain 10-80 meshes of materials for later use;
(4) and (3) pressing and forming: pressing the material prepared in the step (3) in a tablet press to obtain tablets, wherein the density of the pressed tablets is 1.4g/cm3Drying the mixture at the temperature of 20-75 ℃ until the water content is 0.8%;
the indexes of the obtained finished product of the medicine granules are as follows:
the component NC is 96.9 percent; 1.1 percent of DPA; 1.5 percent of adhesive;
moisture content 0.8%;
the size of the medicine particles is phi 6.6X 4.0;
the density of the medicine particles is 1.39g/cm3；
The percussion rate is more than 99.6 percent.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. A safety and environmental protection method for improving the nail shooting and charging manufacturing is characterized in that: the method comprises the following steps:
(1) preparing a solution, namely preparing an aqueous solution with the mass concentration of 0.3-4% by absolute dry weight of the adhesive; preparing a stabilizing agent diphenylamine into a diphenylamine suspension with a 5-30 mass percent aqueous solution of an adhesive;
(2) granulating, namely putting cellulose nitrate containing more than 25 percent of water into a stirrer, gradually adding diphenylamine suspension containing 0.8-1.8 percent of cellulose nitrate in absolute dry weight and 0.5-4 percent of adhesive aqueous solution into the stirrer according to absolute dry weight of the cellulose nitrate, and mixing and granulating for 15-50 minutes at room temperature;
(3) drying and sieving, namely drying the granulated mixture prepared in the step (2) at 20-75 ℃ until the moisture content is 5-20%, and sieving the dried material to obtain a 10-80 mesh material for later use;
(4) compression molding, namely, taking the material prepared in the step (3) to be compressed and molded in a tablet press to obtain tablets with required size, wherein the density of the pressed tablets is 1.2g/cm3~1.5g/cm3Drying the mixture at 20-75 ℃ until the water content is 0.6-1.5%.
2. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 1, wherein: the adhesive in the step (1) is one of cellulose ether, aqueous amino acid emulsion, aqueous acrylic acid emulsion, polyvinyl alcohol solution or xanthan gum solution.
3. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 2, wherein: the binder in the step (1) is cellulose ether.
4. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 3, wherein: the cellulose ether (1) is one or more of sodium carboxymethylcellulose, methylcellulose, hydroxypropyl methylcellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.
5. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 4, wherein: the cellulose ether is hydroxypropyl methyl cellulose.
6. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 1, wherein: the viscosity of the adhesive in the step (1) is 4000cps to 200000 cps.
7. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 6, wherein: the viscosity of the adhesive in the step (1) is 40000cps to 200000 cps.
8. A safe and environmentally friendly method of improving the manufacture of a nail charge according to claim 1, wherein: the nitration degree of the cellulose nitrate in the step (2) is more than or equal to 200ml/g, the fine breaking degree is 60 ml-85 m |, and the water content is 25% -45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965901.4A CN113683470A (en) | 2021-08-23 | 2021-08-23 | Safety and environment-friendly method for improving nail shooting and powder charging manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965901.4A CN113683470A (en) | 2021-08-23 | 2021-08-23 | Safety and environment-friendly method for improving nail shooting and powder charging manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113683470A true CN113683470A (en) | 2021-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110965901.4A Withdrawn CN113683470A (en) | 2021-08-23 | 2021-08-23 | Safety and environment-friendly method for improving nail shooting and powder charging manufacturing |
Country Status (1)
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| CN (1) | CN113683470A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332707A (en) * | 2022-09-08 | 2023-06-27 | 福建海峡科化股份有限公司 | Nail shooting propellant and preparation process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597288A (en) * | 1969-05-15 | 1971-08-03 | Usm Corp | Explosive containing nitrocellulose coated with an alkylated diphenyl amine and preparation thereof |
| US6939961B1 (en) * | 1998-11-27 | 2005-09-06 | Wolf Walsrode Ag | Method for the production of low-viscous water soluble cellulose ethers |
| CN102675007A (en) * | 2012-06-08 | 2012-09-19 | 姚鲁 | Method for preparing primer mixture-free powder charge with high mechanical sensitivity |
| US20130025748A1 (en) * | 2010-01-19 | 2013-01-31 | Clearspark, Llc | Method for preparing a pyrotechnic composition and charge |
| CN105330495A (en) * | 2015-10-15 | 2016-02-17 | 泸州北方化学工业有限公司 | Coated priming composition-free nail-shooting ammunition pellet formula and preparation method thereof |
-
2021
- 2021-08-23 CN CN202110965901.4A patent/CN113683470A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597288A (en) * | 1969-05-15 | 1971-08-03 | Usm Corp | Explosive containing nitrocellulose coated with an alkylated diphenyl amine and preparation thereof |
| US6939961B1 (en) * | 1998-11-27 | 2005-09-06 | Wolf Walsrode Ag | Method for the production of low-viscous water soluble cellulose ethers |
| US20130025748A1 (en) * | 2010-01-19 | 2013-01-31 | Clearspark, Llc | Method for preparing a pyrotechnic composition and charge |
| CN102675007A (en) * | 2012-06-08 | 2012-09-19 | 姚鲁 | Method for preparing primer mixture-free powder charge with high mechanical sensitivity |
| CN105330495A (en) * | 2015-10-15 | 2016-02-17 | 泸州北方化学工业有限公司 | Coated priming composition-free nail-shooting ammunition pellet formula and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332707A (en) * | 2022-09-08 | 2023-06-27 | 福建海峡科化股份有限公司 | Nail shooting propellant and preparation process thereof |
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Application publication date: 20211123 |
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| WW01 | Invention patent application withdrawn after publication |