Method for preparing single-dose multi-spectrum cold smoke screen interference material

Abstract

The invention discloses a method for preparing a single-dose multi-spectrum cold smoke screen interference material, which comprises the following steps: carrying out primary modification on B-based powder to prepare hydroxyl modified B-based powder; mixing the hydroxyl modified B-based powder with the ball material, and carrying out secondary modification on the hydroxyl modified B-based powder to obtain modified B-based powder containing amino; the modified B-based powder containing amino is attached to the surface of the ball material; carrying out primary drying on the ball material to which the modified B-based powder containing the amino group is attached; modifying the silicon-based powder for the third time to obtain hydroxyl modified silicon-based powder; mixing the dried ball material to which the modified B-based powder containing the amino group is attached with the hydroxyl modified silicon-based powder, and performing liquid-free grinding to obtain mixed powder; and carrying out secondary drying on the mixed powder to obtain the single-dose multi-spectrum cold smoke screen interference material. The single-dose multi-spectrum smoke screen interference material is good in dispersion effect in the air, long in duration time, wide in interference wave band and free of decomposition in the air.

Description

Technical Field

[0001] The invention relates to the technical field of smoke interference materials, and in particular to a method for preparing a single-dose multi-spectrum cold smoke interference material. Background Art

[0002] On the information battlefield, smoke screen is a cost-effective, easy-to-use, and simple-to-prepare optoelectronic countermeasure that can confuse the enemy and conceal itself.

[0003] Traditional smoke jamming materials have problems such as poor shielding effect, short duration, and narrow interference band. In order to improve the interference band of smoke jamming materials, multi-spectrum smoke jamming materials are generally prepared by thermal reaction mixing of multiple materials or cold-dry ball milling of multiple materials. The thermal reaction mixing method for preparing multi-spectrum smoke jamming materials has the problem of particle agglomeration caused by moisture during the mixing process and crystallization that may occur during the drying process, resulting in poor dispersion effect and short duration of the multi-spectrum smoke jamming materials in the air. However, the cold-dry ball milling method will lead to difficulties in the structural integrity of the materials and the bonding stability of the multiple materials, which will cause the multi-spectrum smoke jamming materials to separate into multiple materials in the air, or result in poor overall dispersion and poor fluidity in the air of the multi-spectrum smoke jamming materials. Therefore, how to prepare a multi-spectrum smoke jamming material with good dispersion effect in the air, long duration, wide interference band, and the multi-spectrum smoke jamming material will not decompose in the air has become a difficult problem that needs to be solved urgently in this field. Summary of the Invention

[0004] In order to solve the above technical problems, a method for preparing a single-dose multi-spectrum cold smoke jamming material is provided, so as to prepare a multi-spectrum smoke jamming material with good dispersion effect in the air, long duration and wide interference band, and the multi-spectrum smoke jamming material will not decompose in the air; the multi-spectrum smoke jamming material has multi-spectrum jamming performance in visible, infrared and laser bands.

[0005] According to the present invention, a method for preparing a single-dose multi-spectrum cold smoke jamming material is provided, comprising the following steps: The B-based powder is modified once to prepare a hydroxyl-modified B-based powder; The hydroxyl-modified B-based powder is mixed with the ball material and the hydroxyl-modified B-based powder is subjected to secondary modification to obtain a modified B-based powder containing an amino group; the modified B-based powder containing an amino group is attached to the surface of the ball material; The pellets to which the modified B-based powder containing amino groups is attached are dried once; The silicon-based powder is modified three times to obtain hydroxyl-modified silicon-based powder; The pellets to which the modified B-based powder containing amino groups is attached after drying and the hydroxyl-modified silicon-based powder are mixed and then subjected to liquid-free grinding to obtain a mixed powder; The mixed powder is subjected to secondary drying to obtain a single-dose multi-spectrum cold smoke interference material; The single-dose multi-spectrum cold smoke interference material has a single-particle characteristic and is a core-shell structure, wherein the core is a hydroxyl-modified silicon-based powder, and the core-shell coated on the outside of the core is a modified B-based powder containing an amino group; preferably, the B-based powder includes B powder or a B-containing compound; preferably, the silicon-based powder includes silicon powder or a silicon-containing compound; Preferably, the single-dose multi-spectrum cold smoke jamming material has an attenuation rate of >98.49% for visible light, >98.32% for infrared light, >95.24% for mid-infrared light, >97.65% for far-infrared light, >94.49% for laser with a wavelength of 1.06 μm, >96.4% for laser with a wavelength of 10.6 μm, and effective shielding for >120s; and a bulk density of 0.5-0.6 g / cm 3 ; Resistivity ≥ 10 5 Ω.m.

[0006] Compared with the prior art, the present invention has the following beneficial effects: by performing a one-time modification on the B-based powder, hydroxyl groups are connected to the surface of the B-based powder to obtain hydroxyl-modified B-based powder; By mixing the hydroxyl-modified B-based powder with the ball material and performing secondary modification on the hydroxyl-modified B-based powder, the hydroxyl group of the prepared hydroxyl-modified B-based powder is combined with the amino group; at the same time, the modified B-based powder containing the amino group is attached to the grinding ball material; By drying the ball material to which the modified B-based powder containing amino groups is attached once, the adhesion strength between the modified B-based powder containing amino groups and the grinding ball material is improved, and excess moisture is removed, which is conducive to the subsequent mixing of the ball material to which the modified B-based powder containing amino groups is attached after drying with the hydroxyl-modified silicon-based powder for liquid-free grinding. The modified B-based powder containing amino groups will not fall off directly, and when the hydroxyl-modified silicon-based powder contacts the ball material to which the modified B-based powder containing amino groups is attached after drying, the modified B-based powder containing amino groups is coated on the outer surface of the hydroxyl-modified silicon-based powder, and at the same time, it has a lubricating effect, thereby avoiding the structural damage of the hydroxyl-modified silicon-based powder during the ball milling mixing process. By modifying the silicon-based powder three times, a hydroxyl-modified silicon-based powder is obtained, and the hydroxyl-modified silicon-based powder and the modified B-based powder containing amino groups coated on the outside thereof form an -NHOH- structure with high bonding strength; thereby, a single-dose multi-spectrum cold smoke interference material is obtained, which has a core-shell structure, wherein the core is the hydroxyl-modified silicon-based powder, and the core-shell coated on the outside of the core is the modified B-based powder containing amino groups, and the bonding strength between the core and the core-shell is high; the single-dose multi-spectrum cold smoke interference material has good dispersion effect in the air, long duration, and wide interference band, and the multi-spectrum smoke interference material will not decompose in the air; the multi-spectrum smoke interference material has multi-spectrum interference performance in visible, infrared, and laser bands.

[0007] Furthermore, the specific process of preparing the hydroxyl-modified B-based powder includes: The first solution and the B-based powder are mixed in a ball mill at a mass ratio of (5-10): (90-95), and heated during the mixing process at a heating temperature of 125-145° C. for 2-3 hours; the obtained mixture is then dried to obtain a hydroxyl-modified B-based powder.

[0008] Furthermore, the particle size D50 of the B-based powder is 50-100 nm; The first solution includes water and / or ethanol; The volume ratio of the first solution to the ball material in the ball mill is (45-55): (45-55).

[0009] The beneficial effect of the above step is that, because the first solution includes water and / or ethanol, the B-based powder is combined with the hydroxyl groups in the water or ethanol at 125-145° C. without introducing any extra impurities, and the problem of crystallization and grain growth of the B-based powder caused by excessively high temperatures is avoided. By setting the particle size D50 of the B-based powder to 50-100 nm, the obtained hydroxyl-modified B-based powder particles are facilitated to be smaller, thus avoiding the reduction in the subsequent coating rate of the hydroxyl-modified silicon-based powder due to large particles, and also avoiding the subsequent amino-containing modified B-based powder being too firmly bonded to the ball material and not easy to separate from the ball material due to small particles.

[0010] Furthermore, the specific process of preparing the modified B-based powder containing amino groups and attaching it to the surface of the ball material includes the following steps: Add hydroxyl modified B-based powder and cetyltrimethylammonium bromide into a ball mill, and add polyvinyl alcohol and mix; During the mixing process, secondary modification heating is performed, and the mixing and heating time is 2-4h; A modified B-based powder containing amino groups is obtained, and the modified B-based powder containing amino groups is attached to the surface of the ball material.

[0011] Furthermore, the mass ratio of the hydroxyl-modified B-based powder, hexadecyltrimethylammonium bromide, and polyvinyl alcohol is (88-92): (0.3-5): (8-12); The heating temperature during the secondary modification process is 110-120°C.

[0012] The beneficial effect of the above step is that the hydroxyl groups of the hydroxyl-modified B-based powder are combined with the amino groups provided by hexadecyltrimethylammonium bromide to obtain a modified B-based powder containing amino groups; The polyvinyl alcohol is used to facilitate the attachment of the modified B-based powder containing amino groups to the surface of the ball material; The secondary modification heating temperature is 110-120° C., which is beneficial to avoiding the problem of crystallization and grain growth of the B-based powder caused by excessively high temperature.

[0013] Furthermore, the mass ratio of the hydroxyl-modified B-based powder to the ball material in the ball mill is (88-92): (100-150).

[0014] The beneficial effect of adopting the previous step is that it is conducive to achieving the adhesion of the hydroxyl-modified B-based powder to the surface of the ball material, and the adhesion thickness is relatively uniform.

[0015] Furthermore, the pellets to which the modified B-based powder containing amino groups is attached are dried at a temperature of 100-120° C. for 6-8 hours.

[0016] The beneficial effect of adopting the above step is that the water is volatilized and the problem of crystallization and crystal growth of the B-based powder is avoided.

[0017] Furthermore, the process of preparing the hydroxyl-modified silicon-based powder specifically includes the following steps: The silane coupling agent and the silicon-based powder are mixed in a grinding device in a mass ratio of (4-8): (92-96), and heated during the mixing process at a heating temperature of 165-185° C. for 2-3 hours; and then the obtained mixture is dried to obtain a hydroxyl-modified silicon-based powder; The silane coupling agent includes one of aminopropyltriethoxysilane, aminopropyltrimethoxysilane, and ureapropyltriethoxysilane; preferably, the silane coupling agent and silicon-based powder are mixed in a grinding device in a mass ratio of (4-8): (92-96), and then 95% ethanol by volume is added, and the mass ratio of 95% ethanol to the silane coupling agent is (4-8): (5-10).

[0018] The beneficial effect of adopting the previous step is that the silicon-based powder is combined with the amino group in the silane coupling agent to obtain a hydroxyl-modified silicon-based powder. At the same time, by not including water or including a very small amount of water in the third modification process, it is helpful to avoid the problems of crystallization and crystal growth of the silicon-based powder.

[0019] Furthermore, the ball material with the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder are mixed and added to a ball mill for liquid-free grinding, and then magnesium carbonate is added and ball milled for 40-50 hours. The powder material in the ball mill is then taken out to obtain a mixed powder. The particle size D50 of the hydroxyl-modified silicon-based powder is 100-200 nm; The mass ratio of the amino-containing modified B-based powder, the hydroxyl-modified silicon-based powder, and the magnesium carbonate on the surface of the ball material is (5-20): (70-80): (10-30).

[0020] The beneficial effect of the above step is that the pellets containing the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder are mixed and then subjected to liquid-free grinding, which helps to avoid the problems of crystallization and grain growth of the B-based powder and the silicon-based powder. By setting the particle size D50 of the hydroxyl-modified silicon-based powder to 100-200 nm, the particle size of the hydroxyl-modified silicon-based powder is larger than the particle size of the amino-containing modified B-based powder, thereby facilitating the coating of the amino-containing modified B-based powder on the surface of the hydroxyl-modified silicon-based powder. This also helps avoid the problem of uneven coating of the hydroxyl-modified silicon-based powder by the amino-containing modified B-based powder or damage to the structure of the amino-modified B-based powder caused by the excessively large particle size of the hydroxyl-modified silicon-based powder. The addition of magnesium carbonate is beneficial for lubricating during the ball milling process and for avoiding damage to the structures of silicon-based powder and B-based powder.

[0021] Furthermore, during the secondary drying of the mixed powder, the drying temperature is 300-400° C. and the drying time is 1-3 hours.

[0022] The beneficial effect of adopting the previous step is that the bonding strength between the hydroxyl-modified silicon-based powder and the modified B-based powder containing amino groups is increased. At the same time, by setting the drying temperature to 300-400°C, the -NHOH- structure with high strength is formed, and the problem of crystallization or grain growth of the silicon group and the B group caused by excessively high temperature is avoided. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments.

[0024] Example 1: This embodiment provides a method for preparing a single-dose multi-spectrum cold smoke jamming material, comprising the following steps: The B-based powder is modified once to prepare a hydroxyl-modified B-based powder. The specific process of preparing the hydroxyl-modified B-based powder includes: The first solution and the B-based powder were mixed in a ball mill at a mass ratio of 7:93, and heated at 135° C. for 2.5 hours. The resulting mixture was then dried to obtain a hydroxyl-modified B-based powder. The particle size D50 of the B-based powder is 75 nm; the first solution is water; and the volume ratio of the first solution to the ball material in the ball mill is 50:50.

[0025] The hydroxyl-modified B-based powder is mixed with the ball material and the hydroxyl-modified B-based powder is subjected to secondary modification to obtain a modified B-based powder containing an amino group; the modified B-based powder containing an amino group is attached to the surface of the ball material; The specific process of preparing the modified B-based powder containing amino groups and attaching it to the surface of the ball material includes the following steps: Add hydroxyl-modified B-based powder and hexadecyltrimethylammonium bromide into a ball mill and add polyvinyl alcohol to mix; the mass ratio of hydroxyl-modified B-based powder to the ball material in the ball mill is 90:125; heat is applied during the mixing process and the mixing time is 3 hours; The mass ratio of the hydroxyl-modified B-based powder, hexadecyltrimethylammonium bromide, and polyvinyl alcohol is 90:2.6:10; the heating temperature during the secondary modification process is 115°C; A modified B-based powder containing amino groups is obtained, and the modified B-based powder containing amino groups is attached to the surface of the ball material.

[0026] The pellets attached with the modified B-based powder containing amino groups are dried once; the temperature for drying the pellets attached with the modified B-based powder containing amino groups is 115° C., and the drying time is 7 hours.

[0027] The silicon-based powder is modified three times to obtain hydroxyl-modified silicon-based powder. The process of preparing the hydroxyl-modified silicon-based powder specifically includes the following steps: A silane coupling agent and a silicon-based powder are mixed in a grinding device in a mass ratio of 6:94, and heated during the mixing process at a heating temperature of 175° C. for 2.5 hours. The obtained mixture is then dried to obtain a hydroxyl-modified silicon-based powder. The silane coupling agent is aminopropyltriethoxysilane.

[0028] The pellets to which the modified B-based powder containing amino groups is attached after drying and the hydroxyl-modified silicon-based powder are mixed and then subjected to liquid-free grinding to obtain a mixed powder. The specific process is as follows: The dried ball material with the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder were mixed and added to a ball mill for liquid-free grinding. Magnesium carbonate was then added and ball milled for 45 hours. The powder materials in the ball mill were then taken out to obtain a mixed powder. The particle size D50 of the hydroxyl-modified silicon-based powder is 150 nm; The mass ratio of the amino-containing modified B-based powder, the hydroxyl-modified silicon-based powder, and the magnesium carbonate on the surface of the ball material is 12:75:20.

[0029] The mixed powder is subjected to secondary drying to obtain a single-dose multi-spectrum cold smoke interference material; during the secondary drying of the mixed powder, the drying temperature is 350° C. and the drying time is 2 hours.

[0030] The single-dose multi-spectrum cold smoke interference material has a single-particle characteristic and is a core-shell structure, wherein the core is a hydroxyl-modified silicon-based powder, and the core-shell coated on the outside of the core is a modified B-based powder containing an amino group; The B-based powder is B powder; the silicon-based powder is silicon powder; The single-dose multi-spectrum cold smoke jamming material has a visible light attenuation rate of >99.22%, an infrared light attenuation rate of >99.16%, a mid-infrared light attenuation rate of >96.86%, a far-infrared light attenuation rate of >98.55%, a laser attenuation rate of >95.59% for a wavelength of 1.06 μm, and a laser attenuation rate of >97.62% for a wavelength of 10.6 μm. The effective shielding time is >125 seconds. The bulk density is 0.55 g / cm 3 ; Resistivity ≥ 10 5 Ω.m.

[0031] Example 2: The same contents as those in Example 1 are not described in detail here. The differences between this embodiment and Example 1 are as follows: This embodiment provides a method for preparing a single-dose multi-spectrum cold smoke jamming material, further comprising mixing a first solution and a B-based powder in a mass ratio of 9:94 in a ball mill, heating the mixture at a temperature of 143° C. for 2.2 hours, and drying the mixture to obtain a hydroxyl-modified B-based powder. The particle size D50 of the B-based powder is 90 nm; the first solution is ethanol; and the volume ratio of the first solution to the ball material in the ball mill is 54:50.

[0032] The mass ratio of hydroxyl modified B-based powder to the ball material in the ball mill is 91:140; During the mixing process, secondary modification heating is performed, and the mixing time is 2.6 hours; the mass ratio of the hydroxyl-modified B-based powder, hexadecyltrimethylammonium bromide, and polyvinyl alcohol is 91:4.6:11; and the secondary modification heating temperature is 118°C; The pellets to which the modified B-based powder containing amino groups is attached are dried at a temperature of 118° C. for 6.5 hours.

[0033] A silane coupling agent and a silicon-based powder are mixed in a grinding device in a mass ratio of 7:95, and then 95% ethanol by volume is added, where the mass ratio of 95% ethanol to the silane coupling agent is 7:9; heating is performed during the mixing process at a heating temperature of 180°C and a mixing time of 2.2 hours; the obtained mixture is then dried to obtain a hydroxy-modified silicon-based powder; the silane coupling agent is aminopropyltrimethoxysilane.

[0034] The dried ball material with the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder were mixed and added to a ball mill for liquid-free grinding. Magnesium carbonate was then added and ball milled for 43 hours. The powder materials in the ball mill were then taken out to obtain a mixed powder. The particle size D50 of the hydroxyl-modified silicon-based powder is 180 nm; The mass ratio of the amino-containing modified B-based powder, the hydroxyl-modified silicon-based powder, and the magnesium carbonate on the surface of the ball material is 18:78:25.

[0035] During the secondary drying of the mixed powder, the drying temperature is 386° C. and the drying time is 1.6 h.

[0036] The B-based powder is a B-containing compound; the silicon-based powder is a silicon-containing compound; The single-dose multi-spectrum cold smoke jamming material has an attenuation rate of >99.35% for visible light, >99.26% for infrared light, >96.98% for mid-infrared light, >98.85% for far-infrared light, >95.68% for lasers with a wavelength of 1.06μm, and >97.82% for lasers with a wavelength of 10.6μm. The effective shielding time is >120s. The bulk density is 0.58g / cm 3 .

[0037] Example 3: The same contents as those in Example 1 are not described in detail here. The differences between this embodiment and Example 1 are as follows: This embodiment provides a method for preparing a single-dose multi-spectrum cold smoke jamming material, comprising mixing a first solution and a B-based powder in a mass ratio of 6:91 in a ball mill, heating the mixture at 128° C. for 2.8 hours, and drying the mixture to obtain a hydroxyl-modified B-based powder. The particle size D50 of the B-based powder is 60 nm; the first solution includes water and ethanol, and the volume ratio of water to ethanol is 3:7; the volume ratio of the first solution to the ball material in the ball mill is 46:48.

[0038] The mass ratio of hydroxyl modified B-based powder to the ball material in the ball mill is 89:110; During the mixing process, secondary modification heating was performed, and the mixing time was 3.8 h; The mass ratio of the hydroxyl-modified B-based powder, hexadecyltrimethylammonium bromide, and polyvinyl alcohol is 89:0.8:9; the secondary modification heating temperature is 112°C; The temperature for drying the pellets to which the modified B-based powder containing amino groups is attached is 106° C. and the drying time is 7.8 h.

[0039] A silane coupling agent and a silicon-based powder are mixed in a grinding device in a mass ratio of 5:93, and then 95% ethanol by volume is added, and the mass ratio of 95% ethanol to the silane coupling agent is 5:6; heating is performed during the mixing process, the heating temperature is 168° C., and the mixing time is 2.8 hours; then the obtained mixture is dried to obtain a hydroxy-modified silicon-based powder; the silane coupling agent is ureapropyltriethoxysilane.

[0040] The dried ball material with the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder were mixed and added to a ball mill for liquid-free grinding. Magnesium carbonate was then added and ball milled for 49 hours. The powder materials in the ball mill were then taken out to obtain a mixed powder. The particle size D50 of the hydroxyl-modified silicon-based powder is 110 nm; The mass ratio of the amino-containing modified B-based powder, the hydroxyl-modified silicon-based powder, and the magnesium carbonate on the surface of the ball material is 8:72:12.

[0041] During the secondary drying of the mixed powder, the drying temperature is 310° C. and the drying time is 2.8 h.

[0042] The single-dose multi-spectrum cold smoke jamming material has a visible light attenuation rate of >98.89%, an infrared light attenuation rate of >98.86%, a mid-infrared light attenuation rate of >95.89%, a far-infrared light attenuation rate of >97.96%, a laser attenuation rate of >94.98% at a wavelength of 1.06μm, and a laser attenuation rate of >96.89% at a wavelength of 10.6μm. The effective shielding time is >130s. The bulk density is 0.52g / cm 3 .

[0043] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept, such as the technical solutions formed by the mutual replacement of the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for preparing a single-dose multi-spectrum cold smoke jamming material, characterized in that: The following steps are involved: The B-based powder is modified once to prepare a hydroxyl-modified B-based powder; Mixing the hydroxyl-modified B-based powder with the ball material and performing secondary modification on the hydroxyl-modified B-based powder to obtain a modified B-based powder containing an amino group; the modified B-based powder containing an amino group is attached to the surface of the ball material; The pellets to which the modified B-based powder containing amino groups is attached are dried once; The silicon-based powder is modified three times to obtain hydroxyl-modified silicon-based powder; The pellets to which the modified B-based powder containing amino groups is attached after drying and the hydroxyl-modified silicon-based powder are mixed and then subjected to liquid-free grinding to obtain a mixed powder; The mixed powder is subjected to secondary drying to obtain a single-dose multi-spectrum cold smoke interference material; The single-dose multi-spectrum cold smoke interference material has a single-particle characteristic and is a core-shell structure, wherein the core is a hydroxyl-modified silicon-based powder, and the core-shell coated outside the core is a modified B-based powder containing amino groups.

2. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 1, characterized in that: The specific process of preparing the hydroxyl-modified B-based powder includes: The first solution and the B-based powder are mixed in a ball mill at a mass ratio of (5-10): (90-95), and heated during the mixing process at a heating temperature of 125-145° C. for 2-3 hours; the obtained mixture is then dried to obtain a hydroxyl-modified B-based powder.

3. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 2, characterized in that: The particle size D50 of the B-based powder is 50-100 nm; The first solution includes water and / or ethanol; The volume ratio of the first solution to the ball material in the ball mill is (45-55): (45-55).

4. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 1, characterized in that: The specific process of preparing the modified B-based powder containing amino groups and attaching it to the surface of the ball material includes the following steps: Add hydroxyl modified B-based powder and cetyltrimethylammonium bromide into a ball mill, and add polyvinyl alcohol and mix; Heating is performed during the mixing process, and the mixing and heating time is 2-4 hours; A modified B-based powder containing amino groups is obtained, and the modified B-based powder containing amino groups is attached to the surface of the ball material.

5. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 4, characterized in that: The mass ratio of the hydroxyl-modified B-based powder, hexadecyltrimethylammonium bromide, and polyvinyl alcohol is (88-92): (0.3-5): (8-12); The heating temperature during the secondary modification process is 110-120°C.

6. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 5, characterized in that: The mass ratio of the hydroxyl-modified B-based powder to the ball material in the ball mill is (88-92): (100-150).

7. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 1, characterized in that: The temperature for drying the pellets to which the modified B-based powder containing amino groups is attached is 100-120° C. and the drying time is 6-8 hours.

8. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 1, characterized in that: The process of preparing hydroxyl-modified silicon-based powder specifically includes the following steps: The silane coupling agent and the silicon-based powder are mixed in a grinding device in a mass ratio of (4-8): (92-96), and heated during the mixing process at a heating temperature of 165-185°C for 2-3 hours; and then the obtained mixture is dried to obtain a hydroxyl-modified silicon-based powder; The silane coupling agent includes one of aminopropyltriethoxysilane, aminopropyltrimethoxysilane and ureapropyltriethoxysilane.

9. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 1, characterized in that: The dried ball material with the modified B-based powder containing amino groups attached thereto and the hydroxyl-modified silicon-based powder are mixed and added to a ball mill for liquid-free grinding. Magnesium carbonate is then added and ball milled for 40-50 hours. The powder material in the ball mill is then taken out to obtain a mixed powder. The particle size D50 of the hydroxyl-modified silicon-based powder is 100-200 nm; The mass ratio of the amino-containing modified B-based powder, the hydroxyl-modified silicon-based powder, and the magnesium carbonate on the surface of the ball material is (5-20): (70-80): (10-30).

10. The method for preparing a single-dose multi-spectrum cold smoke jamming material according to claim 2, characterized in that: During the secondary drying of the mixed powder, the drying temperature is 300-400° C. and the drying time is 1-3 hours.