CN103360188A - Special foaming paste for latex matrix sensitization, and preparation method thereof - Google Patents
Special foaming paste for latex matrix sensitization, and preparation method thereof Download PDFInfo
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- CN103360188A CN103360188A CN2013103243509A CN201310324350A CN103360188A CN 103360188 A CN103360188 A CN 103360188A CN 2013103243509 A CN2013103243509 A CN 2013103243509A CN 201310324350 A CN201310324350 A CN 201310324350A CN 103360188 A CN103360188 A CN 103360188A
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Abstract
The invention relates to a special foaming paste for latex matrix sensitization, and a preparation method thereof. The foaming paste comprises, by weight, 35-40 parts of sodium nitrite, 45-50 parts of water, 10-15 parts of compound oil and 5-7 parts of a surfactant. The preparation method which utilizes the activity of the surfactant is characterized in that an aqueous solution of sodium nitrite is dispersed in the compound oil, and is stirred for dispersion to form a water-in-oil emulsion. The foaming paste is suitable for the low temperature sensitization of a latex matrix in a sensitization temperature of 20-40DEG C, and is also suitable for the medium and high temperature sensitization of the latex matrix in a sensitization temperature range of 50-70DEG C. The drug density can reach 1.06-1.12g/cm<3> 15-20min after the use of the foaming paste in the sensitization temperature range of 20-40DEG C, and the obtained sensitized drug has an excellent detonation performance and accords with Chinese standards. The preparation method has the advantages of simple technology, safe production process, stable product quality, and easy realization of the industrialized production.
Description
Technical field
The present invention relates to a kind of emulsion matrix sensitization special-purpose foaming cream, particularly a kind of have the emulsion matrix sensitization foaming paste of fast foaming performance and a preparation method of this foaming paste under low temperature condition.
Background technology
Along with the continuous popularization of the portable explosive production modes such as on-site mixed car, safety, efficient on-site mixed explosive new technology have become a main development direction of industrial explosive.From the domestic and international application situation, on-site mixed emulsion matrix production technology has reached the requirement of United Nations's " about recommendation of Dangerous Goods Transport---test and manual of standards " (the 5th revised edition) series of trials 8, can be used as general oxygenant and carry out the tank body transportation, solved the safety problem of the long-range conveying of emulsion matrix.At present, mostly adopt the mode of chemical sensitization when the on-site mixed pharmacy of blasting operation, namely mix nitrite in the emulsion matrix and add acid assistant, reaction process discharges a large amount of bubbles and is dispersed in the matrix to reach the purpose of sensitization.Through investigating, find that this Sensitization modes is responsive to sensitizing temperature, temperature of reaction is generally at 50～60 ℃, foamed time is between 10～20min, but after extremely frigid zones or emulsion matrix were through long-distance transport, substrate temperature then was difficult to foaming below 40 ℃ the time.The present invention will research and solve the problems referred to above, and preparation is fit to the special-purpose foaming cream of emulsion matrix sensitization.
Summary of the invention
The objective of the invention is provides a kind of emulsion matrix sensitization foaming paste with low temperature fast foaming characteristics, and the preparation method of this foaming paste is provided in order to overcome the defective that it is difficult that above-mentioned whipping agent foams under low temperature condition.
The present invention is the activity of utilizing tensio-active agent, sodium nitrite in aqueous solution is distributed in the compounded oil, by the milk sap of dispersed with stirring formation water-in-oil-type, i.e. emulsion matrix sensitization foaming paste.
Emulsion matrix sensitization special-purpose foaming cream of the present invention, its starting material and weight proportion are as follows:
Sodium Nitrite: 35～40 water: 45～50
Compounded oil: 10～15 tensio-active agents: 5～7.
Emulsion matrix sensitization special-purpose foaming cream of the present invention, used tensio-active agent are polyisobutene Xing biological species polymeric surface active agent, and its quality index requirement is:
Moisture (%)≤0.1 mechanical impurity (%)≤0.1
Kinematic viscosity (100 ℃, mm
2/ s) 〉=240 flash-point (opening, ℃) 〉=175
Density (20 ℃, g/cm
3) 0.88～0.90 color and luster: brown thickness transparent liquid.
Above-mentioned each component is prepared emulsion matrix sensitization special-purpose foaming cream of the present invention by technological process, and the preparation method comprises the steps:
(1) 35～40 parts of Sodium Nitrites of weight part is added in 45～50 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 10～15 parts of compounded oils of weight part and 5～7 parts of tensio-active agents are put into respectively in the melting pot, heated and stirred is warming up to 70～80 ℃;
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 150～250r/min in the adition process;
(4) the control mixing speed continued to stir 15～20min again at 400～600r/min after step (3) added material;
(5) with the prepared Water in Oil emulsion cooling of step (4), namely get emulsion matrix sensitization special-purpose foaming cream of the present invention.
After the test emulsion matrix used existing conventional whipping agent sensitization and uses foaming paste sensitization of the present invention, the comparative test result of medicine volume density saw Table 1:
Table 1
Emulsion matrix sensitization special-purpose foaming cream of the present invention not only is applicable to sensitizing temperature in the low temperature sensitization of the emulsion matrix of 20～40 ℃ of scopes, also be applicable to 50～70 ℃ of scopes emulsion matrix in heat-sensitized.Use foaming paste of the present invention when 20～40 ℃ of scopes of sensitizing temperature, foamed time is behind 15～20min, and the medicine volume density just can reach 1.06～1.12g/cm
3Fabricating technology of the present invention is simple, production process safety, and constant product quality realizes suitability for industrialized production easily.
Emulsion matrix sensitization special-purpose foaming cream of the present invention penetrating quality in emulsion matrix is better, is difficult for gathering the formation air pocket, and the medicine body blast performance after the sensitization is good, meets national standard.Table 2 is after using existing conventional whipping agent and foaming paste of the present invention to the emulsion matrix sensitization, medicine body blast performance comparative test result:
Table 2
Embodiment
Describe the embodiment of emulsion matrix sensitization special-purpose foaming cream of the present invention and preparation method thereof in detail below in conjunction with embodiment.
The preparation method of emulsion matrix sensitization special-purpose foaming cream of the present invention comprises the steps:
(1) 35～40 parts of Sodium Nitrites of weight part is added in 45～50 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 10～15 parts of compounded oils of weight part and 5～7 parts of tensio-active agents are put into respectively in the melting pot, heated and stirred is warming up to 70～80 ℃;
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 150～250r/min in the adition process;
(4) the control mixing speed continued to stir 15～20min again at 400～600r/min after step (3) added material;
(5) with the prepared Water in Oil emulsion cooling of step (4), namely get emulsion matrix sensitization special-purpose foaming cream of the present invention.
Embodiment 1
The raw material of preparation emulsion matrix sensitization special-purpose foaming cream is all in the weight part proportioning in the present embodiment, and the implementation step is as follows:
(1) 35 parts of Sodium Nitrites is added in 48 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 10 parts of compounded oils are put in the melting pot, the input table surface-active agent is 7 parts again, and heated and stirred is warming up to 70～80 ℃;
Wherein tensio-active agent is polyisobutene Xing biological species polymeric surface active agent, and its performance index requirement is:
Moisture (%)≤0.1 mechanical impurity (%)≤0.1
Kinematic viscosity (100 ℃, mm
2/ s) 〉=240 flash-point (opening, ℃) 〉=175
Density (20 ℃, g/cm
3) 0.88～0.90 color and luster: brown thickness transparent liquid
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 200r/min in the adition process;
(4) the control mixing speed continued to stir 20min again at 500r/min after step (3) added material;
(5) the prepared Water in Oil emulsion of step (4) is at room temperature cooled off, namely made emulsion matrix special-purpose foaming cream of the present invention.
Embodiment 2
The raw material of preparation emulsion matrix sensitization special-purpose foaming cream is all in the weight part proportioning in the present embodiment, and the implementation step is as follows:
(1) 38 parts of Sodium Nitrites is added in 45 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 12 parts of compounded oils are put in the melting pot, the input table surface-active agent is 5 parts again, and heated and stirred is warming up to 70～80 ℃;
Wherein tensio-active agent is polyisobutene Xing biological species polymeric surface active agent, and its performance index requirement is:
Moisture (%)≤0.1 mechanical impurity (%)≤0.1
Kinematic viscosity (100 ℃, mm
2/ s) 〉=240 flash-point (opening, ℃) 〉=175
Density (20 ℃, g/cm
3) 0.88～0.90 color and luster: brown thickness transparent liquid
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 250r/min in the adition process;
(4) the control mixing speed continued to stir 18min again at 450r/min after step (3) added material;
(5) Water in Oil emulsion that step (4) is made is at room temperature cooled off, and namely makes emulsion matrix special-purpose foaming cream of the present invention.
Embodiment 3
The raw material of preparation emulsion matrix sensitization special-purpose foaming cream is all in the weight part proportioning in the present embodiment, and the implementation step is as follows:
(1) 35 parts of Sodium Nitrites is added in 45 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 15 parts of compounded oils are put in the melting pot, the input table surface-active agent is 5 parts again, and heated and stirred is warming up to 70～80 ℃;
Wherein tensio-active agent is polyisobutene Xing biological species polymeric surface active agent, and its performance index requirement is:
Moisture (%)≤0.1 mechanical impurity (%)≤0.1
Kinematic viscosity (100 ℃, mm
2/ s) 〉=240 flash-point (opening, ℃) 〉=175
Density (20 ℃, g/cm
3) 0.88～0.90 color and luster: brown thickness transparent liquid
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 150r/min in the adition process;
(4) the control mixing speed continued to stir 16min again at 600r/min after step (3) added material;
(5) the prepared Water in Oil emulsion of step (4) is at room temperature cooled off,, namely make emulsion matrix special-purpose foaming cream of the present invention.
Claims (4)
1. emulsion matrix sensitization special-purpose foaming cream, it is made by the raw material of following weight parts proportioning:
Sodium Nitrite: 35～40 water: 45～50
Compounded oil: 10～15 tensio-active agents: 5～7.
2. a kind of emulsion matrix special-purpose foaming cream according to claim 1 is characterized in that tensio-active agent wherein is polyisobutene Xing biological species polymeric surface active agent, and its quality index requirement is:
Moisture (%)≤0.1 mechanical impurity (%)≤0.1 kinematic viscosity (100 ℃, mm
2/ s) 〉=240 flash-point (opening, ℃) 〉=175 density (20 ℃, g/cm
3): 0.88～0.90 color and luster: brown thickness transparent liquid.
3. the preparation method of an emulsion matrix sensitization special-purpose foaming cream comprises the steps:
(1) 35～40 parts of Sodium Nitrites of weight part is added in 45～50 parts of water, be warming up to and make it abundant dissolving more than 70 ℃;
(2) 10～15 parts of compounded oils of weight part and 5～7 parts of tensio-active agents are put into respectively in the melting pot, heated and stirred is warming up to 70～80 ℃;
(3) sodium nitrite in aqueous solution in the step (1) is slowly added in the above-mentioned melting pot, the control mixing speed is at 150～250r/min in the adition process;
(4) the control mixing speed continued to stir 15～20min at 400～600r/min after step (3) added material;
(5) with the prepared Water in Oil emulsion cooling of step (4).
4. the preparation method of emulsion matrix sensitization special-purpose foaming cream according to claim 3, it is characterized in that: the aqueous solution of Sodium Nitrite is added in 10～15 parts of compounded oils of weight part and 5～7 parts of formed oil phases of tensio-active agent, the control mixing speed is at 150～250r/min in the adition process, the control mixing speed continues to stir 15～20min again at 400～600r/min after adding material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109180396A (en) * | 2018-11-01 | 2019-01-11 | 四川雅化实业集团股份有限公司 | A kind of middle low temperature sensitizer and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070902A (en) * | 1992-07-24 | 1993-04-14 | 长沙矿山研究院 | Emulsion explosive and chemical foaming process |
| CN1618775A (en) * | 2004-08-26 | 2005-05-25 | 煤炭科学研究总院爆破技术研究所 | Pressure resistant emulsified explosive |
| CN102010275A (en) * | 2010-10-26 | 2011-04-13 | 广东宏大爆破股份有限公司 | Readily-foaming emulsifying agent |
-
2013
- 2013-07-30 CN CN2013103243509A patent/CN103360188A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070902A (en) * | 1992-07-24 | 1993-04-14 | 长沙矿山研究院 | Emulsion explosive and chemical foaming process |
| CN1618775A (en) * | 2004-08-26 | 2005-05-25 | 煤炭科学研究总院爆破技术研究所 | Pressure resistant emulsified explosive |
| CN102010275A (en) * | 2010-10-26 | 2011-04-13 | 广东宏大爆破股份有限公司 | Readily-foaming emulsifying agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109180396A (en) * | 2018-11-01 | 2019-01-11 | 四川雅化实业集团股份有限公司 | A kind of middle low temperature sensitizer and its preparation method and application |
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Application publication date: 20131023 |