CN104909968A - Moistureproof waterproof treatment method for potassium perchlorate - Google Patents
Moistureproof waterproof treatment method for potassium perchlorate Download PDFInfo
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- CN104909968A CN104909968A CN201510313333.4A CN201510313333A CN104909968A CN 104909968 A CN104909968 A CN 104909968A CN 201510313333 A CN201510313333 A CN 201510313333A CN 104909968 A CN104909968 A CN 104909968A
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- potassium perchlorate
- moistureproof
- liquid glue
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Abstract
The invention relates to a moistureproof waterproof treatment method for potassium perchlorate, belonging to the field of materials. The method comprises the following steps: (1) dissolving a solid adhesive in an anhydrous solvent to prepare a 2-10 wt% liquid adhesive; (2) adding potassium perchlorate into the liquid adhesive in the step (1), and dispersing uniformly by ultrasonic cleaning vibration; and (3) under stirring conditions, dropwisely adding a precipitation solvent so that the adhesive precipitates from the solvent and is coated on the potassium perchlorate surface, and drying to obtain the coated potassium perchlorate particles. The complete uniform organic high-polymer film with the thickness of 0.2-5 mu m is formed on the surface of the potassium perchlorate to effectively isolate water in air and prevent the potassium perchlorate from being moistened, so that the storage time of the potassium perchlorate at normal temperature is obviously prolonged, thereby solving the problems of storage and use of the potassium perchlorate in air.
Description
Technical field
The present invention relates to a kind of potassium perchlorate moistureproof and waterproof treatment process, belong to Material Field.
Background technology
Potassium perchlorate is clear crystal or white crystalline powder, belong to inorganic salt, there is certain water absorbability, place in atmosphere and easily absorb the moisture in air and lump, reduce surface energy, improve mechanical sensitivity, have impact on performance and the production efficiency of potassium perchlorate, if containing moisture, the poor fluidity of potassium perchlorate can be caused, reduce its service efficiency, have a strong impact on the use of potassium perchlorate.
Traditional moistureproof mode be put in potassium perchlorate non-blushing thinner (in iron. potassium perchlorate synergistic additive, 200910043539.9; Topaz state. a kind of blasting fuse of high-safety firecracker and preparation method thereof, 200810031258.2) or the active powder of moistureproofness (Ouyang Mingsheng; Ou Yang Jing. firework and oxidant for fire wire and production method .200610136969.7 thereof), if non-blushing thinner dosage is few, moisture effect is not obvious; If dosage is large, the content of inert substance increases, and affects the effect of pyrotechnics composition.
Potassium perchlorate is when as oxygenant in priming, kraft paper can be adopted, waterproof membrane, aluminium foil forms multilayer coating structure (Yu Zhiyuan, Yu Benyou. a kind of moistureproof quick lead cord, 201010546988.3), or inner core is placed on paper material and is rolled into round bar shaped and draws base, after putting into binder solution immersion, carry out damp-proof treatment, adopt kraft paper, waterproof membrane, the inconvenience that aluminium foil forms multilayer coating structure therefrom takes potassium perchlorate, the moisture that still can touch in air is taken as opened clad structure, can not be completely moistureproof, therefore such damp-proof treatment is applicable on a small quantity, the potassium perchlorate of direct use.
Summary of the invention
The present invention seeks to the problem in order to solve the potassium perchlorate easy moisture absorption in atmosphere, and a kind of potassium perchlorate moistureproof and waterproof treatment process is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
Step one, join in anhydrous solvent by tackiness agent, stir and make it dissolve completely, form liquid glue, liquid glue concentration is 2 ~ 10%;
Step 2, proportionlity according to every 100g liquid glue correspondence 100 ~ 125g potassium perchlorate, join in liquid glue by potassium perchlorate under the condition of 20 ~ 80 DEG C, and ultrasonic disperse is even, obtains mixing solutions;
Step 3, the mixed solution and dripping precipitation solvent obtained to step 2 under the condition stirred, tackiness agent is all separated out from solution, is coated on the surface of potassium perchlorate equably, wherein precipitation agent dripping quantity is 2 ~ 5% of liquid glue quality;
Step 4, the potassium perchlorate being coated with tackiness agent step 3 obtained carry out drying, obtain the potassium perchlorate of moistureproof and waterproof process.
Described tackiness agent is epoxy resin, trifluoropropyl siloxane, suitable isobutene rubber, ethylene-propylene rubber(EPR).
Described anhydrous solvent is tetrahydrofuran (THF), dioxane, toluene, benzene, N, N-dimethyl amide.
Described precipitation solvent is sherwood oil, acetone, acetonitrile, dimethyl sulfoxide (DMSO).
Beneficial effect
A kind of potassium perchlorate moistureproof and waterproof treatment process of the present invention, by forming one deck densification, uniform macromolecule membrane on potassium perchlorate surface, effectively can completely cut off empty G&W, the storage time of potassium perchlorate under normal temperature is improved significantly, solves the aerial storage of potassium perchlorate, use problem.
Embodiment
Content of the present invention is described further in conjunction with the embodiments.
Embodiment 1:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) get 20g epoxy resin, join in the container that 980g anhydrous tetrahydro furan is housed, by warming-in-water to 60 DEG C, stir until epoxy resin dissolves completely, forming concentration is the liquid glue of 2%, for subsequent use;
(2) getting 50g potassium perchlorate joins in 50g liquid glue, ultrasonic cleaning vibration 30min, low whipping speed is the acetonitrile dripping 1g under the condition of 100r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 15min, rate of addition is per minute 50;
(3) coated potassium perchlorate is placed in centrifugal spray dryer dry solvent, inlet temperature is 40 DEG C, and temperature out is 50 DEG C, and rotary speed is 500r/min, and time of drying is 3h, obtains the potassium perchlorate of moistureproof and waterproof process;
Be 80% in relative humidity, temperature is preserve under 25 DEG C of environment not occur caking phenomenon in 20 days, and water content is 0.1% (undressed potassium perchlorate is preserved 10h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 2:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 8g ethylene-propylene rubber(EPR) is joined in 92g anhydrous dioxane, stir, be heated to 40 DEG C, until solution dissolves completely, form liquid glue, for subsequent use;
(2) 60g potassium perchlorate to be joined in container and to add 75g liquid glue, ultrasonic cleaning vibration 45min, low whipping speed is the dimethyl sulfoxide (DMSO) dripping 3.7g under the condition of 200r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 16min, rate of addition is per minute 75;
(3) by the 2nd) to be placed in vacuum tightness be vacuum drying oven time of drying under the condition of 50 DEG C of 0.04MPa to the coated potassium perchlorate that obtains of step is 6h, obtains the potassium perchlorate of moistureproof and waterproof process.
Be 60% in relative humidity, temperature is preserve under 25 DEG C of environment not occur caking phenomenon in 35 days, and water content is 0.1% (undressed potassium perchlorate is preserved 15h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 3:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 10g is joined in 90g dry toluene along isobutene rubber, stir, be heated to 80 DEG C, until solution is completely transparent, form liquid glue, for subsequent use;
(2) 30g potassium perchlorate is joined in 35g liquid glue, ultrasonic cleaning vibration 40min, low whipping speed is drip 1.4g sherwood oil under the condition of 250r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 17min, rate of addition is per minute 80;
(3) the coated potassium perchlorate that (2) step obtains is placed in centrifugal spray dryer dry solvent, inlet temperature is 75 DEG C, and temperature out is 60 DEG C, and rotary speed is 600r/min, time of drying is 4.2h, obtains coated potassium perchlorate.
Be 95% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 18 days, and water content is 0.2% (undressed potassium perchlorate is preserved 6h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 4:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 3g trifluoropropyl siloxane is joined in 97g dry-out benzene, stir, be heated to 35 DEG C, until silicon rubber is completely transparent, form liquid glue, for subsequent use;
(2) 100g potassium perchlorate to be joined in 250mL there-necked flask and to add 120g liquid glue, ultrasonic cleaning vibration 40min, low whipping speed is drip 3g acetone under the condition of 280r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 18min, rate of addition is per minute 62;
(3) the coated potassium perchlorate that (2) step obtains is placed in the loft drier that vacuum tightness is 0.01MPa, under the condition of 55 DEG C, dry 3.2h, obtains coated potassium perchlorate.
Be 90% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 19 days, and water content is 0.2% (undressed potassium perchlorate is preserved 7h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 5:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 3.5g ethylene-propylene rubber(EPR) is joined 96.5g N, in N-dimethyl amide, stir, be heated to 50 DEG C, until ethylene-propylene rubber(EPR) is completely transparent, form liquid glue, for subsequent use;
(2) 100g potassium perchlorate to be joined in 250mL there-necked flask and to add 108g liquid glue, ultrasonic cleaning vibration 42min, low whipping speed is drip 3.1g acetonitrile under the condition of 150r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 16min, rate of addition is per minute 72;
(3) by the 2nd) the coated potassium perchlorate that obtains of step is placed in centrifugal spray dryer dry solvent, and inlet temperature is 55 DEG C, and temperature out is 68 DEG C, and rotary speed is 580r/min, and time of drying is 4.2h, obtains coated potassium perchlorate.
Be 70% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 30 days, and water content is 0.2% (undressed potassium perchlorate is preserved 12h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 6
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 4.5g epoxy resin is joined in 95.5g dry toluene solvent, stir, be heated to 68 DEG C, until epoxy resin is completely transparent, form liquid glue, for subsequent use;
(2) 100g potassium perchlorate to be joined in 250mL there-necked flask and to add 115g liquid glue, ultrasonic cleaning vibration 44min, low whipping speed is drip 4.6g dimethyl sulfoxide (DMSO) under the condition of 180r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 20min, rate of addition is per minute 55;
(3) by the 2nd) the coated potassium perchlorate that obtains of step is placed in centrifugal spray dryer dry solvent, and inlet temperature is 45 DEG C, and temperature out is 52 DEG C, and rotary speed is 650r/min, and time of drying is 4.8h, obtains coated potassium perchlorate.
Be 75% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 28 days, and water content is 0.2% (undressed potassium perchlorate is preserved 9h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 7:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 2.5g is joined in 97.5g dioxane along isobutene rubber, stir, be heated to 50 DEG C, until silicon rubber is completely transparent, form liquid glue, for subsequent use;
(2) 100g potassium perchlorate to be joined in 250mL there-necked flask and to add 105g liquid glue, ultrasonic cleaning vibration 38min, low whipping speed is drip 4.2g acetone under the condition of 280r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 19min, rate of addition is per minute 85;
(3) by the 2nd) the coated potassium perchlorate that obtains of step is placed in centrifugal spray dryer dry solvent, and inlet temperature is 72 DEG C, and temperature out is 70 DEG C, and rotary speed is 580r/min, and time of drying is 4.2h, obtains coated potassium perchlorate.
Be 85% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 28 days, and water content is 0.2% (undressed potassium perchlorate is preserved 7h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Embodiment 8:
A kind of potassium perchlorate moistureproof and waterproof treatment process, concrete steps are as follows:
(1) 9g trifluoropropyl siloxane is joined in anhydrous N, the N-dimethyl amide of 91g, stir, be heated to 78 DEG C, until trifluoropropyl siloxane is completely transparent, form liquid glue, for subsequent use;
(2) 100g potassium perchlorate to be joined in 250mL there-necked flask and to add 102g liquid glue, ultrasonic cleaning vibration 44min, low whipping speed is drip 4.6g sherwood oil under the condition of 210r/min, make tackiness agent from solution, separate out the surface being coated on potassium perchlorate, dropwise rear continuation and stir 20min, rate of addition is per minute 62;
(3) the coated potassium perchlorate that (2) step obtains is placed in centrifugal spray dryer dry solvent, inlet temperature is 54 DEG C, and temperature out is 54 DEG C, and rotary speed is 560r/min, time of drying is 4.6h, obtains coated potassium perchlorate.
Be 65% in relative humidity, temperature is can preserve under 25 DEG C of environment not occur caking phenomenon in 32 days, and water content is 0.2% (undressed potassium perchlorate is preserved 10.5h and occurred caking), effectively improves the moisture effect of potassium perchlorate.
Claims (4)
1. a potassium perchlorate moistureproof and waterproof treatment process, is characterized in that: concrete steps are as follows:
Step one, join in anhydrous solvent by tackiness agent, stir and make it dissolve completely, form liquid glue, liquid glue concentration is 2 ~ 10%;
Step 2, proportionlity according to every 100g liquid glue correspondence 100 ~ 125g potassium perchlorate, join in liquid glue by potassium perchlorate under the condition of 20 ~ 80 DEG C, and ultrasonic disperse is even, obtains mixing solutions;
Step 3, the mixed solution and dripping precipitation solvent obtained to step 2 under the condition stirred, tackiness agent is all separated out from solution, is coated on the surface of potassium perchlorate equably, wherein precipitation agent dripping quantity is 2 ~ 5% of liquid glue quality;
Step 4, the potassium perchlorate being coated with tackiness agent step 3 obtained carry out drying, obtain the potassium perchlorate of moistureproof and waterproof process.
2. a kind of potassium perchlorate moistureproof and waterproof treatment process as claimed in claim 1, is characterized in that: described tackiness agent is epoxy resin, trifluoropropyl siloxane, suitable isobutene rubber, ethylene-propylene rubber(EPR).
3. a kind of potassium perchlorate moistureproof and waterproof treatment process as claimed in claim 1, is characterized in that: described anhydrous solvent is tetrahydrofuran (THF), dioxane, toluene, benzene, N, N-dimethyl amide.
4. a kind of potassium perchlorate moistureproof and waterproof treatment process as claimed in claim 1, is characterized in that: described precipitation solvent is sherwood oil, acetone, acetonitrile, dimethyl sulfoxide (DMSO).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204405A (en) * | 2019-05-10 | 2019-09-06 | 湖南出入境检验检疫局检验检疫技术中心 | A kind of cladding fireworks material, celestial body medicament and its preparation and application |
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| CN1994981A (en) * | 2006-12-26 | 2007-07-11 | 欧阳明生 | Firework and oxidant for fire wire and its production method |
| CN101270015A (en) * | 2008-05-09 | 2008-09-24 | 醴陵神马花炮有限公司 | Blasting fuse of high-safety firecracker and preparation method thereof |
| CN101565339A (en) * | 2009-05-31 | 2009-10-28 | 于铁 | Potassium perchlorate synergistic additive |
| CN102128568A (en) * | 2010-11-17 | 2011-07-20 | 浏阳市余氏科技环保烟花厂 | Moistureproof quick lead cord |
| CN102584505A (en) * | 2012-01-16 | 2012-07-18 | 南京理工大学 | Modular smokeless firework ammunition capable of improving dampproof performance and preparation method for modular smokeless firework ammunition |
| CN103382020A (en) * | 2013-07-12 | 2013-11-06 | 北京理工大学 | Metal hydride stability treatment method |
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2015
- 2015-06-10 CN CN201510313333.4A patent/CN104909968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994981A (en) * | 2006-12-26 | 2007-07-11 | 欧阳明生 | Firework and oxidant for fire wire and its production method |
| CN101270015A (en) * | 2008-05-09 | 2008-09-24 | 醴陵神马花炮有限公司 | Blasting fuse of high-safety firecracker and preparation method thereof |
| CN101565339A (en) * | 2009-05-31 | 2009-10-28 | 于铁 | Potassium perchlorate synergistic additive |
| CN102128568A (en) * | 2010-11-17 | 2011-07-20 | 浏阳市余氏科技环保烟花厂 | Moistureproof quick lead cord |
| CN102584505A (en) * | 2012-01-16 | 2012-07-18 | 南京理工大学 | Modular smokeless firework ammunition capable of improving dampproof performance and preparation method for modular smokeless firework ammunition |
| CN103382020A (en) * | 2013-07-12 | 2013-11-06 | 北京理工大学 | Metal hydride stability treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110204405A (en) * | 2019-05-10 | 2019-09-06 | 湖南出入境检验检疫局检验检疫技术中心 | A kind of cladding fireworks material, celestial body medicament and its preparation and application |
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