CN111960906B - A Chinese medicinal composition for treating common cold, and its preparation method - Google Patents
A Chinese medicinal composition for treating common cold, and its preparation method Download PDFInfo
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- CN111960906B CN111960906B CN202010742527.7A CN202010742527A CN111960906B CN 111960906 B CN111960906 B CN 111960906B CN 202010742527 A CN202010742527 A CN 202010742527A CN 111960906 B CN111960906 B CN 111960906B
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- taian
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- butanediol
- dioctyl phthalate
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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
- C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
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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
- C06B23/005—Desensitisers, phlegmatisers
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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
- C06B25/32—Compositions containing a nitrated organic compound the compound being nitrated pentaerythritol
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses insensitive taian and a preparation method thereof, and aims to solve the problem of low safety performance in the process of the prior art. The insensitive taian is prepared by coating taian by using a mixture of a thermoplastic elastomer and a flame retardant as an insensitive agent, wherein the thermoplastic elastomer is butanediol-succinic acid-adipic acid copolymer, the flame retardant is dioctyl phthalate, and the particle size of the taian is 50-80 mu m. The paint consists of the following components in percentage by mass: 0.5-10.1 percent of butanediol-succinic acid-adipic acid copolymer, 0.3-0.9 percent of dioctyl phthalate and 89.1-98.5 percent of Taian. The invention effectively reduces the mechanical sensitivity of the Taian explosive and the flexible explosive thereof, improves the safety performance of the flexible explosive preparation process, and does not influence the original formula performance of the explosive; the preparation process is simple, low in cost and suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the field of explosives and powders, in particular to insensitive taian and a preparation method thereof.
Background
The flexible explosive is a mixed explosive which is easy to bend, has the appearance similar to rubber, smaller critical diameter and high initiation sensitivity. Due to the characteristics of the tai ' an, the tai ' an is widely applied to the components of the flexible explosive formula, but the tai ' an has high sensitivity, so that the powder of the flexible explosive collides and rubs with each other in the preparation process, and the problems of explosive combustion, even explosion and the like are caused. The existing flexible explosive has potential safety hazard in the preparation operation process, the application range of the flexible explosive in military products is gradually increased in recent years, the requirement on explosive charging safety and reliability is continuously improved, and a formula for reducing the sensitivity to the great safety and a safe and reliable preparation process thereof need to be designed.
Disclosure of Invention
The invention aims to overcome the technical problems of potential safety hazards and the like of flexible explosives, and discloses insensitive taian and a preparation method thereof.
In order to achieve the purpose, the invention discloses the following technical scheme:
the insensitive taian is prepared by coating taian by using a mixture of a thermoplastic elastomer and a flame retardant as an insensitive agent, wherein the thermoplastic elastomer is a butanediol-succinic acid-adipic acid copolymer, and the flame retardant is dioctyl phthalate.
Furthermore, the particle size of the tai' an is 50-80 μm.
Specifically, the coating comprises the following components in percentage by mass: 0.5-10.1 percent of butanediol-succinic acid-adipic acid copolymer, 0.3-0.9 percent of dioctyl phthalate and 89.1-98.5 percent of Taian.
The preparation method of insensitive taian of the invention is that butanediol-succinic acid-adipic acid copolymer, dioctyl phthalate and water are mixed, then taian is added, stirred and mixed, and the product is obtained after filtering and drying.
Furthermore, the weight percentage of the butanediol-succinic acid-adipic acid copolymer is 0.5-10.1%, the weight percentage of the dioctyl phthalate is 0.3-0.9%, and the weight percentage of the taian copolymer is 89.1-98.5%.
Specifically, the mass ratio of the butanediol-succinic acid-adipic acid copolymer to the dioctyl phthalate to the water is 1 (0.3-0.4): 100.
further, the temperature of the butanediol-succinic acid-adipic acid copolymer, the dioctyl phthalate and the water during mixing is 88-92 ℃, the stirring speed during mixing is 900-1000 r/min, and the mixing time is more than or equal to 30 min.
Furthermore, the temperature of the mixture during the stirring and mixing is 83-88 ℃, the stirring speed during the mixing is 48-52 r/min, and the mixing time is more than or equal to 90 min.
Optionally, the drying temperature is 58-65 ℃.
Preferably, the butanediol-succinic acid-adipic acid copolymer, the dioctyl phthalate and the water are mixed at the temperature of 90 ℃ and the speed of 1000r/min, then the mixture is added with the mixture, stirred and mixed at the temperature of 85 ℃ and the speed of 50r/min, and the mixture is obtained after filtration and drying;
wherein, the mass percent of the butanediol-succinic acid-adipic acid copolymer is 3 percent, the mass percent of the dioctyl phthalate is 1 percent, and the mass percent of the taian is 96 percent.
Compared with the prior art, the invention has the following technical effects:
the invention effectively reduces the mechanical sensitivity of the Taian explosive and the flexible explosive, reduces the safety risk of the insensitive Taian explosive preparation process, improves the safety performance of the flexible explosive preparation process, and does not influence the original explosive formula performance; the preparation process is simple, low in cost and suitable for large-scale popularization and application.
The present invention will be described in further detail with reference to specific embodiments.
Detailed Description
Any modification of the structure, change of the ratio or adjustment of the size of the structure should still fall within the scope of the present disclosure without affecting the function and the purpose of the present disclosure.
According to the invention, the mixture of the thermoplastic elastomer (PBSA) and the flame retardant dioctyl phthalate (DOP) is used as a desensitizer to be coated on the surface of the particles, so that the friction between the particles is reduced microscopically, the mechanical property of the thermoplastic elastomer relieves the stress of the particles, the heated phase change process of the thermoplastic elastomer can absorb part of heat, and the flame retardant is added to further reduce the reaction risk; in the preparation process, the rotating speed of the mixer is reduced to 50r/min, so that the operation safety and reliability are improved.
The mechanical sensitivity test method is GJB772A-1997, wherein the impact sensitivity test method is GJB772A-1997 method 601.1, the friction sensitivity test method is GJB772A-1997 method 602.1,
the invention provides a passive taian medicine, which comprises the following components in percentage by mass: 89.1 to 98.5 percent of Taian, 0.5 to 10.1 percent of butanediol-succinic acid-adipic acid copolymer (PBSA), 0.3 to 0.9 percent of dioctyl phthalate (DOP), and the Taian granularity is between 50 and 80 mu m.
The explosion-proof rotary mixer adopted by the invention is a non-standard type device; tai' an is produced by a national-ying eight-good five-factory, a butanediol-succinic acid-adipic acid copolymer (PBSA) is a Guangdong Dong Guang skimmit elite plastic collagen factory, and dioctyl phthalate (DOP) is produced by a Shandong near-Yi formation chemical industry; the proportions of PBSA, DOP and distilled water according to the present invention are mass ratios.
The present invention will be described in further detail with reference to specific examples.
Example 1:
the embodiment discloses insensitive taian and a preparation method thereof, which are implemented by referring to the following components in percentage by mass: 96% of Taian, 3% of butanediol-succinic acid-adipic acid copolymer (PBSA), 1% of dioctyl phthalate (DOP), and the Taian particle size is 50-60 μm.
The preparation method comprises the following steps:
(1) adding butanediol-succinic acid-adipic acid copolymer (PBSA), dioctyl phthalate (DOP) and distilled water into a high-speed rotary mixer according to the ratio of 1:0.3:100, and mixing at 90 deg.C and 1000r/min for no less than 30 min;
(2) continuously adding the Taian into a high-speed rotating mixer, mixing for not less than 90min at 85 ℃ and 50r/min, filtering, and drying at 60 ℃ for later use.
Example 2
The present example was carried out with reference to the following mass percentages: 92% of Taian, 6% of butanediol-succinic acid-adipic acid copolymer (PBSA), 2% of dioctyl phthalate (DOP), and the particle size of the Taian is 60-80 μm.
The preparation method is the same as that of example 1.
The temperature, rotation speed and drying temperature were set as in example 1.
Example 3
The present example was carried out with reference to the following mass percentages: 93 percent of Taian, 5 percent of butanediol-succinic acid-adipic acid copolymer (PBSA), 2 percent of dioctyl phthalate (DOP), and the Taian particle size is 50 mu m to 60 mu m.
The preparation method is the same as that of example 1.
The temperature, rotation speed and drying temperature were set as in example 1.
Example 4
The present example was carried out with reference to the following mass percentages: 89% of Taian, 2.5% of butanediol-succinic acid-adipic acid copolymer (PBSA), 8.5% of dioctyl phthalate (DOP), and the particle size of the Taian is 50-60 μm.
The preparation is identical to example 1, except that:
(1) the temperature is 88 ℃, the rotating speed is 900r/min, and the mixing time is 35 min;
(2) the temperature is 83 ℃, the rotating speed is 48r/min, and the mixing time is 35 min; the drying temperature is 62 ℃ for standby.
Example 5
The present example was carried out with reference to the following mass percentages: 97% of Taian, 2.7% of butanediol-succinic acid-adipic acid copolymer (PBSA), 0.3% of dioctyl phthalate (DOP), and the particle size of the Taian is 50-60 μm.
The preparation is identical to example 1, except that:
(1) the temperature is 92 ℃, the rotating speed is 950r/min, and the mixing time is 40 min;
(2) the temperature is 88 ℃, the rotating speed is 52r/min, and the mixing time is 40 min; the drying temperature is 58 ℃ for standby.
Example 6
The present example was carried out with reference to the following mass percentages: 94.5 percent of Taian, 3.5 percent of butanediol-succinic acid-adipic acid copolymer (PBSA), 2 percent of dioctyl phthalate (DOP), and the particle size of the Taian is 50-60 mu m.
The preparation is identical to example 1, except that:
(1) the temperature is 91 ℃, the rotating speed is 950r/min, and the mixing time is 40 min;
(2) the temperature is 87 ℃, the rotating speed is 50r/min, and the mixing time is 40 min; the drying temperature is 60 ℃ for standby.
Comparative example 1
The experimental steps of the prior preparation technology are specifically as follows: the method comprises the following steps of: 93.2 percent of Taian, 5.5 percent of microcrystalline wax, 0.6 percent of sodium dodecyl sulfate and 0.7 percent of liquid paraffin, wherein the Taian is 18-25 mu m.
The preparation method comprises the following steps:
(1) adding the Taian and the distilled water into a high-speed rotary mixer according to the mass ratio of 1:1.2, mixing for not less than 2h at normal temperature and at the speed of 800r/min, discharging, and drying for later use;
(2) adding microcrystalline wax, sodium dodecyl sulfate, liquid paraffin and petroleum ether in a corresponding proportion into a high-speed rotary mixer, and mixing for not less than 1h at 85 ℃ and 1000r/min for later use;
(3) adding the Taian and the petroleum ether pretreated in the step (1) into the step (2) according to a certain proportion, effectively mixing for not less than 2 hours at 85 ℃ and 50r/min, discharging, and drying for later use. And (3) performance test results: the mechanical sensitivity of the samples was measured according to the standard and the results are given in Table 1.
TABLE 1 mechanical sensitivity data
| Sample name | Sensitivity to impact/%) | Degree of friction sensitivity/%) |
| Comparative example 1 | 52 | 73 |
| Example 1 | 47 | 61 |
| Example 2 | 43 | 59 |
| Example 3 | 44 | 60 |
As can be seen from table 1, the impact sensitivity and the friction sensitivity of the inventive samples are reduced compared to the comparative examples.
The inventive samples, which were insensitive taian according to the invention and the binder, which was tetra-hydroxy-terminated polybutadiene (HTPB), were mixed in a mass ratio of 88:12 and tested for mechanical sensitivity and burst speed according to GJB772A-97, and the results are shown in Table 2.
Table 2 formulation performance data
| Sample name | Sensitivity to impact/%) | Degree of friction sensitivity/%) | Detonation velocity/m/s |
| Containing comparative example 1 | 64 | 82 | 7213 |
| Including example 1 | 57 | 71 | 7296 |
| Including example 2 | 51 | 69 | 7201 |
| Containing example 3 | 53 | 69 | 7217 |
As can be seen from Table 2, the mechanical sensitivity of the flexible explosive containing the present invention is reduced, while the detonation velocity is too mild compared to that of the prior art containing the insensitive explosive, without degrading the original properties of the explosive formulation.
The prior art preparation process is compared to the preparation process of the present invention, as shown in table 3.
TABLE 3 comparison of Process parameters
| Sample name | Process flow | Total time of the process | Adding rotational speed of Taian |
| Comparative example | Mixing for 3 times, and oven drying for 2 times | 53h | 1000r/min |
| Examples | Mixing for 2 times, and oven drying for 1 time | 26h | 48～52r/min |
As can be seen from Table 3, compared with the prior art, the preparation process of the invention reduces 2 process flows, saves the process time of 27h, reduces the rotating speed of the mixer from 1000r/min to 48-52 r r/min after adding too much, and improves the operation safety.
The objects, technical solutions and advantages of the present invention are further described in the above embodiments, it should be noted that the above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The preferred embodiments of the present disclosure have been described in detail above, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of the various embodiments of the present disclosure can be made, and the same should be considered as the inventive content of the present disclosure, as long as the combination does not depart from the spirit of the present disclosure.
Claims (5)
1. The insensitive taian is characterized in that the insensitive taian is prepared by coating taian by using a mixture of a thermoplastic elastomer and a flame retardant as a insensitive agent, wherein the thermoplastic elastomer is a butanediol-succinic acid-adipic acid copolymer, and the flame retardant is dioctyl phthalate;
the particle size of the taian is 50-80 μm;
the paint consists of the following components in percentage by mass: 0.5-10.1 percent of butanediol-succinic acid-adipic acid copolymer, 0.3-0.9 percent of dioctyl phthalate and 89.1-98.5 percent of Taian.
2. The method for preparing insensitive taian as claimed in claim 1, wherein the preparation is prepared by mixing butanediol-succinic acid-adipic acid copolymer, dioctyl phthalate and water, adding taian, stirring and mixing, filtering and drying;
the mass percent of the butanediol-succinic acid-adipic acid copolymer is 0.5-10.1%, the mass percent of the dioctyl phthalate is 0.3-0.9%, and the mass percent of the taian is 89.1-98.5%;
the mass ratio of the butanediol-succinic acid-adipic acid copolymer to the dioctyl phthalate to the water is 1 (0.3-0.4): 100, respectively;
the temperature of the butanediol-succinic acid-adipic acid copolymer, the dioctyl phthalate and the water during mixing is 88-92 ℃, the stirring speed during mixing is 900-1000 r/min, and the mixing time is more than or equal to 30 min.
3. The method for preparing insensitive taian as claimed in claim 2, wherein the temperature of stirring and mixing the added taian is 83-88 ℃, the stirring speed of mixing is 48-52 r/min, and the mixing time is 90min or more.
4. The method for preparing the insensitive taian as claimed in claim 2, wherein the drying temperature is 58-65 ℃.
5. The method for preparing insensitive taian as claimed in claim 2, wherein the preparation method comprises mixing butanediol-succinic acid-adipic acid copolymer, dioctyl phthalate and water at 90 deg.C and 1000r/min, adding taian at 85 deg.C and 50r/min, stirring, filtering, and oven drying;
wherein, the mass percent of the butanediol-succinic acid-adipic acid copolymer is 3 percent, the mass percent of the dioctyl phthalate is 1 percent, and the mass percent of the taian is 96 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742527.7A CN111960906B (en) | 2020-07-29 | 2020-07-29 | A Chinese medicinal composition for treating common cold, and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010742527.7A CN111960906B (en) | 2020-07-29 | 2020-07-29 | A Chinese medicinal composition for treating common cold, and its preparation method |
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| CN111960906A CN111960906A (en) | 2020-11-20 |
| CN111960906B true CN111960906B (en) | 2021-12-21 |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1106396A (en) * | 1965-08-19 | 1968-03-13 | Du Pont | Explosive composition |
| CN106588520B (en) * | 2016-11-28 | 2019-05-24 | 湖北航天化学技术研究所 | A kind of insensitiveness pressed explosives tested by slow cook-off |
| CN111039733B (en) * | 2019-12-09 | 2021-10-08 | 西安近代化学研究所 | Polymer-based fused explosive |
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