Rare earth bionic military braid as well as preparation method and application thereof

Abstract

The invention discloses a rare earth bionic military braid and a preparation method thereof.The rare earth bionic military braid comprises a braid body and a mixture printed on the surface of the braid body, the mixture is composed of rare earth bionic paint, printing paste, a color fixing agent and deionized water, and the rare earth bionic paint is composed of rare earth bionic pigment and a water-based adhesive; the rare earth bionic pigment is prepared by mixing chromium oxide, a rare earth compound, a dispersing agent, a fluxing agent, a pH regulator and deionized water. The camouflage ribbon has a good camouflage effect in a spectrum background of a green jungle, effectively solves the problem that a traditional camouflage ribbon is easy to expose a target in front of detection equipment such as a night vision device, and provides powerful support for camouflage and concealment in military operation; the preparation method is simple, low in raw material cost and suitable for industrial production.

Description

Technical Field

[0001] The invention belongs to the technical field of rare earth material application, and in particular relates to a rare earth bionic military webbing and a preparation method and application thereof. Background Art

[0002] Traditional military webbings achieve camouflage effects in the visible light region through carefully designed patterns. However, with the rapid development of reconnaissance technology, the camouflage function of ordinary camouflage webbings has become fragile under the effect of night vision goggles' spectrum enhancement, and the target is easily exposed. In modern warfare, the widespread use of high-tech reconnaissance equipment such as night vision goggles has made traditional camouflage methods face unprecedented challenges. In this case, in order to better cope with the complex and changing battlefield environment and ensure the concealment and safety of military operations, it is urgent to develop new military webbings with bionic functions. Military webbings with bionic functions can simulate the camouflage characteristics of organisms in nature, not only in the visible light region, but also in multiple spectral bands such as infrared and microwaves to achieve effective camouflage, thereby effectively reducing the probability of being discovered in the face of various reconnaissance methods, providing more powerful guarantees for military operations. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a rare earth bionic military webbing.

[0004] Another object of the present invention is to provide a method for preparing the rare earth bionic military webbing.

[0005] The technical solution of the present invention is as follows:

[0006] A rare earth bionic military webbing comprises a webbing body and a mixture printed on the surface of the webbing body, wherein the mixture consists of a rare earth bionic coating, a printing paste, a color fixative and deionized water, wherein the rare earth bionic coating consists of a rare earth bionic pigment and a water-based adhesive, and the rare earth bionic pigment is prepared by mixing chromium oxide, a rare earth compound, a dispersant, a flux, a pH regulator and deionized water, wherein:

[0007] The rare earth compound is selected from rare earth chloride and rare earth nitrate, wherein the rare earth element is selected from holmium, dysprosium, erbium, terbium and praseodymium.

[0008] In a preferred embodiment of the present invention, the rare earth compound is selected from HoCl 3 6H 2 O、DyCl 3 6H 2 O、Er(NO 3 ) 3 6H 2 O、Tb(NO 3 ) 3 6H 2O and PrCl 3 6H 2 O.

[0009] In a preferred embodiment of the present invention, the dispersant is selected from sodium carboxymethylcellulose, polyvinyl pyrrolidone, polyvinyl alcohol, sodium dodecylbenzene sulfonate and polyethylene glycol.

[0010] In a preferred embodiment of the present invention, the flux is selected from boric acid (B 2 O 3 ), phosphoric acid (P 2 O 5 ), potassium oxide (K 2 O) and sodium oxide (Na 2 O).

[0011] In a preferred embodiment of the present invention, the pH adjuster is selected from aqueous ammonia and sodium hydroxide solution.

[0012] In a preferred embodiment of the present invention, the aqueous adhesive is selected from aqueous polyurethane and aqueous acrylate.

[0013] In a preferred embodiment of the present invention, the fixing agent is selected from the group consisting of fixing agent Y, M, cross-linking fixing agent DE and cross-linking fixing agent Indosol CR.

[0014] In a preferred embodiment of the present invention, the printing paste is selected from guar gum, tamarind gum and sodium alginate.

[0015] In a preferred embodiment of the present invention, the mass ratio of the chromium oxide, the rare earth compound, the dispersant and the flux is 100:100-400:1-20:1-4.

[0016] 10. A method for preparing a rare earth bionic military webbing according to any one of claims 1 to 9, characterized in that it comprises the following steps:

[0017] (1) A rare earth compound, deionized water and a dispersant are stirred until completely dissolved, and then a pH adjuster is added dropwise to adjust the pH to 9-11. After stirring for 1-6 hours, the resulting precipitate is washed and filtered, and then dried at 80-120° C. for 4-12 hours to obtain a rare earth hydroxide A;

[0018] (2) grinding and mixing the rare earth hydroxide A, chromium oxide and flux obtained in step (1) to obtain a mixture B;

[0019] (3) The mixture B is first heated to 400-600° C. and calcined for 1-3 h, and then further heated to 700-1000° C. and calcined for 1-4 h. After the calcination is completed, the mixture is taken out and ball-milled to a particle size D50 of 300 nm-25 μm to obtain a rare earth bionic pigment C;

[0020] (4) dispersing and blending the rare earth bionic pigment C and the aqueous binder uniformly to obtain a rare earth bionic pigment C with a solid content of 50-80%, that is, obtaining a rare earth bionic coating D;

[0021] (5) mixing and dispersing the rare earth bionic coating D, printing paste, fixing agent and deionized water in a weight ratio of 2-10:45:4:41-49 to obtain a mixture E;

[0022] (6) The mixture E is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention has a good camouflage effect in the spectral background of the green jungle, effectively solving the problem that the traditional camouflage webbing is easy to expose the target in front of night vision goggles and other reconnaissance equipment, and provides strong support for camouflage and concealment in military operations.

[0025] 2. The preparation method of the present invention is simple, the raw material cost is low, and it is suitable for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the XRD diagram of the rare earth bionic pigment C5 in Example 5 of the present invention.

[0027] Figure 2 This is a scanning electron microscope photograph of the rare earth bionic pigment C5 in Example 5 of the present invention.

[0028] Figure 3 This is a spectrum comparison diagram of the rare earth bionic pigment C5, the rare earth bionic military ribbon F5 and the green leaves in Example 5 of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further illustrated and described below through specific implementation modes in combination with the accompanying drawings.

[0030] Example 1

[0031] (1) 100 parts by weight of HoCl 3 6H 2 O was placed in a beaker containing 300 parts by weight of deionized water and 1 part by weight of polyvinyl alcohol (PVA), and the beaker was placed on a stirrer for stirring until HoCl 3 6H 2O was completely dissolved. Ammonia water was then added dropwise to adjust the pH value of the solution to 9, and stirring was continued for 1 hour. After stirring, the precipitate was washed and filtered, and then placed in an oven and dried at 80°C for 12 hours to obtain Ho(OH) 3 , denoted as A1.

[0032] (2) 100 parts by weight of A1 and 100 parts by weight of chromium oxide (Cr 2 O 3 ) and 1 part by weight of potassium oxide (K 2 O) were placed in a ball mill and ground and mixed uniformly to obtain a mixture B1.

[0033] (3) The mixture B1 was placed in a muffle furnace, first heated to 400°C and calcined for 3 hours, and then further heated to 700°C and calcined for 4 hours. After the calcination was completed, the mixture was taken out and ball-milled to a particle size D50 of 300 nm to obtain a rare earth bionic pigment C1.

[0034] (4) The rare earth bionic pigment C1 and the aqueous polyurethane are dispersed and mixed uniformly to obtain a C1 solid content of 50%, thereby obtaining a rare earth bionic coating D1.

[0035] (5) The rare earth bionic coating D1 is fully mixed and dispersed with tamarind gum, color fixing agent Y, M, and deionized water in a designed weight ratio (D1: tamarind gum: color fixing agent Y, M: deionized water = 2:45:4:49) to obtain a mixture E1.

[0036] (6) The mixture E1 is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon F1. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired bionic military camouflage ribbon.

[0037] Example 2

[0038] (1) 100 parts by weight of DyCl 3 6H 2 O was placed in a beaker containing 500 parts by weight of deionized water and 5 parts by weight of polyethylene glycol (PEG), and the beaker was placed on a stirrer for stirring until DyCl 3 6H 2 O was completely dissolved. Then sodium hydroxide was added dropwise to adjust the pH value of the solution to 10, and stirring was continued for 3 hours. After stirring, the precipitate was washed and filtered, and then placed in an oven and dried at 100°C for 8 hours to obtain Dy(OH) 3 , denoted as A2.

[0039] (2) 200 parts by weight of A2 and 100 parts by weight of chromium oxide (Cr 2 O 3) and 2 parts by weight of phosphoric acid were placed in a ball mill and ground and mixed evenly to obtain a mixture B2.

[0040] (3) The mixture B2 was placed in a muffle furnace, first heated to 500° C. and calcined for 2 h, and then further heated to 900° C. and calcined for 2 h. After calcination, the mixture was taken out and ball-milled to a particle size D50 of 800 nm to obtain a rare earth bionic pigment C2.

[0041] (4) The rare earth bionic pigment C2 and the aqueous polyurethane are dispersed and mixed uniformly to obtain a C2 solid content of 60%, thereby obtaining a rare earth bionic coating D2.

[0042] (5) The rare earth bionic coating D2 is fully mixed and dispersed with sodium alginate, cross-linking color fixing agent DE, and deionized water in a designed weight ratio (D2: sodium alginate: cross-linking color fixing agent DE: deionized water = 5:45:4:46) to obtain a mixture E2.

[0043] (6) The mixture E2 is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon F2. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired bionic military camouflage ribbon.

[0044] Example 3

[0045] (1) 100 parts by weight of Er(NO 3 ) 3 6H 2 O was placed in a beaker containing 800 parts by weight of deionized water and 20 parts by weight of sodium dodecylbenzene sulfonate, and the beaker was placed on a stirrer for stirring until Er(NO3) 3 6H 2 O was completely dissolved. Then sodium hydroxide was added dropwise to adjust the pH value of the solution to 11, and stirring was continued for 6 hours. After stirring, the precipitate was washed and filtered, and then placed in an oven and dried at 120°C for 4 hours to obtain Er(OH) 3 , denoted as A3.

[0046] (2) 400 parts by weight of A3 and 100 parts by weight of chromium oxide (Cr 2 O 3 ) and 4 parts by weight of sodium oxide (Na 2 O) were placed in a ball mill and ground and mixed uniformly to obtain a mixture B3.

[0047] (3) The mixture B3 was placed in a muffle furnace, first heated to 600°C and calcined for 3 hours, and then further heated to 1000°C and calcined for 4 hours. After the calcination was completed, the mixture was taken out and ball-milled to a particle size D50 of 25 μm to obtain a rare earth bionic pigment C3.

[0048] (4) The rare earth bionic pigment C3 and the water-based acrylic ester are dispersed and mixed uniformly to obtain a C3 solid content of 80%, thereby obtaining a rare earth bionic coating D3.

[0049] (5) The rare earth bionic coating D3 was fully mixed and dispersed with guar gum, cross-linking fixing agent (Indosol CR), and deionized water in a designed weight ratio (D3: guar gum: cross-linking fixing agent (Indosol CR): deionized water = 10:45:4:41) to obtain a mixture E3.

[0050] (6) The mixture E3 is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon F3. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired bionic military camouflage ribbon.

[0051] Example 4

[0052] (1) 100 parts by weight of Tb(NO 3 ) 3 6H 2 O was placed in a beaker containing 600 parts by weight of deionized water and 10 parts by weight of sodium carboxymethyl cellulose, and the beaker was placed on a stirrer for stirring until Tb(NO 3 ) 3 6H 2 O was completely dissolved. Ammonia water was then added dropwise to adjust the pH value of the solution to 10, and stirring was continued for 5 hours. After stirring, the precipitate was washed and filtered, and then placed in an oven and dried at 110°C for 3 hours to obtain Tb(OH) 3 , recorded as A4.

[0053] (2) 300 parts by weight of A4 and 100 parts by weight of chromium oxide (Cr 2 O 3 ) and 4 parts by weight of boric acid (B 2 O 3 ) are placed together in a ball mill and ground and mixed evenly to obtain a mixture B4.

[0054] (3) The mixture B4 was placed in a muffle furnace, first heated to 500° C. and calcined for 2 h, and then further heated to 1000° C. and calcined for 2 h. After calcination, the mixture was taken out and ball-milled to a particle size D50 of 15 μm to obtain a rare earth bionic pigment C4.

[0055] (4) The rare earth bionic pigment C4 and the water-based acrylic ester are dispersed and mixed uniformly to obtain a C4 with a solid content of 60%, thereby obtaining a rare earth bionic coating D4.

[0056] (5) The rare earth bionic coating D4 was fully mixed and dispersed with guar gum, cross-linking fixing agent (Indosol CR), and deionized water in a designed weight ratio (D4: guar gum: cross-linking fixing agent (Indosol CR): deionized water = 6:45:4:45) to obtain a mixture E4.

[0057] (6) The mixture E4 is evenly printed on the surface of the webbing and dried to obtain the rare earth bionic military webbing F4. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired bionic military camouflage webbing.

[0058] Example 5

[0059] (1) 100 parts by weight of PrCl 3 6H 2 O was placed in a beaker containing 500 parts by weight of deionized water and 8 parts by weight of polyvinylpyrrolidone (PVP), and the beaker was placed on a stirrer for stirring until PrCl 3 6H 2 O was completely dissolved. Then sodium hydroxide was added dropwise to adjust the pH value of the solution to 11 and the stirring was continued for 2 hours. After the stirring was completed, the precipitate was washed and filtered, and then the precipitate was placed in an oven and dried at 105°C for 4 hours to obtain Pr(OH) 3 , recorded as A5.

[0060] (2) 200 parts by weight of A5 and 100 parts by weight of chromium oxide (Cr 2 O 3 ) and 2 parts by weight of boric acid (B 2 O 3 ) are placed together in a ball mill and ground and mixed evenly to obtain a mixture B5.

[0061] (3) The mixture B5 was placed in a muffle furnace, first heated to 600°C and calcined for 2 hours, and then further heated to 900°C and calcined for 3 hours. After calcination, the mixture was taken out and ball-milled to a particle size D50 of 5 μm to obtain the following: Figures 1 to 3 Rare earth biomimetic pigment C5 shown.

[0062] (4) The rare earth bionic pigment C5 and the water-based acrylic ester are dispersed and mixed uniformly to obtain a C5 solid content of 80%, thereby obtaining a rare earth bionic coating D5.

[0063] (5) The rare earth bionic coating D5 is fully mixed and dispersed with guar gum, color fixing agent Y, M, and deionized water in a designed weight ratio (D5: guar gum: color fixing agent Y, M: deionized water = 5:45:4:46) to obtain a mixture E5.

[0064] (6) The mixture E5 is evenly printed on the surface of the ribbon and dried to obtain the following Figure 3 The rare earth bionic military webbing F5 shown in the figure. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the required bionic military camouflage webbing.

[0065] Comparative Example 1: Only chromium oxide (Cr 2 O 3 ), no rare earth materials

[0066] (1) 100 parts by weight of chromium oxide (Cr 2 O 3 ) and 2 parts by weight of boric acid (B 2 O 3 ) are placed together in a ball mill and ground and mixed evenly to obtain a mixture B6.

[0067] (2) Mixture B6 was placed in a muffle furnace, first heated to 600°C and calcined for 2 hours, and then further heated to 900°C and calcined for 3 hours. After calcination, the mixture was taken out and ball-milled to a particle size D50 of 5 μm to obtain pigment C6.

[0068] (3) The rare earth bionic pigment C6 and the water-based acrylic ester are dispersed and mixed uniformly to obtain a coating D6 with a solid content of 80%.

[0069] (4) The rare earth bionic coating D6 is fully mixed and dispersed with guar gum, color fixing agent Y, M, and deionized water in a designed weight ratio (D6: guar gum: color fixing agent Y, M: deionized water = 5:45:4:46) to obtain a mixture E6.

[0070] (5) The mixture E6 is evenly printed on the surface of the webbing and dried to obtain the military webbing F6. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired military webbing.

[0071] Comparative Example 2: Only rare earth materials, no chromium oxide (Cr 2 O 3 )

[0072] (1) 100 parts by weight of PrCl 3 6H 2 O was placed in a beaker containing 500 parts by weight of deionized water and 8 parts by weight of polyvinylpyrrolidone (PVP), and the beaker was placed on a stirrer for stirring until PrCl 3 6H 2 O was completely dissolved. Then sodium hydroxide was added dropwise to adjust the pH value of the solution to 11 and the stirring was continued for 2 hours. After the stirring was completed, the precipitate was washed and filtered, and then the precipitate was placed in an oven and dried at 105°C for 4 hours to obtain Pr(OH) 3 , denoted as A7.

[0073] (2) 200 parts by weight of A7 and 2 parts by weight of boric acid (B 2 O 3 ) are placed together in a ball mill and ground and mixed evenly to obtain a mixture B7.

[0074] (3) The mixture B7 was placed in a muffle furnace, first heated to 600° C. and calcined for 2 h, and then further heated to 900° C. and calcined for 3 h. After calcination, the mixture was taken out and ball-milled to a particle size D50 of 5 μm to obtain a rare earth bionic pigment C7.

[0075] (4) The rare earth bionic pigment C7 and the water-based acrylic ester are dispersed and mixed uniformly to obtain a C7 solid content of 80%, thereby obtaining a rare earth bionic coating D7.

[0076] (5) The rare earth bionic coating D7 is fully mixed and dispersed with guar gum, color fixing agent Y, M, and deionized water in a designed weight ratio (D7: guar gum: color fixing agent Y, M: deionized water = 5:45:4:46) to obtain a mixture E7.

[0077] (6) The mixture E7 is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon F7. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the desired bionic military camouflage ribbon.

[0078] Comparative Example 3: No rare earth material and no chromium oxide (Cr 2 O 3 )

[0079] (1) Aqueous acrylate, guar gum, color fixing agent Y, M, and deionized water were fully mixed and dispersed in a designed weight ratio (aqueous acrylate: guar gum: color fixing agent Y, M: deionized water = 5:45:4:46) to obtain a mixture E8.

[0080] (2) The mixture E8 is evenly printed on the surface of the ribbon and dried to obtain the military ribbon F8. Subsequently, the addition of other corresponding auxiliary pigments can be adjusted according to the design of the camouflage pattern to produce the required military ribbon.

[0081] The technical effects of the webbings obtained in the above embodiments and comparative examples are compared as shown in Table 1 below:

[0082] Table 1

[0083] sample Color fastness to abrasion Color fastness to abrasion Bionic Effect Comprehensive evaluation Example 1 ≧ Level 4 ≧ Level 4 ++++++ +++++++ Example 2 ≧ Level 4 ≧ Level 4 +++++ ++++++ Example 3 ≧ Level 4 ≧ Level 4 +++++++ ++++++ Example 4 ≧ Level 4 ≧ Level 4 +++++ +++++ Example 5 ≧ Level 4 ≧ Level 4 +++++++++ +++++++++ Comparative Example 1 ≧ Level 4 ≧ Level 4 ++ +++ Comparative Example 2 ≧ Level 4 ≧ Level 4 ++ +++ Comparative Example 3 ≧ Level 4 ≧ Level 4 + +++

[0084] Note: The more +s there are, the better the effect and the better the evaluation.

[0085] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A rare earth bionic military webbing, characterized in that: The invention comprises a ribbon body and a mixture printed on the surface of the ribbon body, wherein the mixture is composed of rare earth bionic coating, printing paste, color fixative and deionized water, the rare earth bionic coating is composed of rare earth bionic pigment and water-based adhesive, and the rare earth bionic pigment is prepared by mixing chromium oxide, rare earth compound, dispersant, flux, pH regulator and deionized water, wherein: The rare earth compound is selected from rare earth chloride and rare earth nitrate, wherein the rare earth element is selected from holmium, dysprosium, erbium, terbium and praseodymium.

2. A rare earth bionic military webbing as claimed in claim 1, characterized in that: The rare earth compound is selected from HoCl3·6H2O, DyCl3·6H2O, Er(NO3)3·6H2O, Tb(NO3)3·6H2O and PrCl3·6H2O.

3. The rare earth bionic military webbing according to claim 1, characterized in that: The dispersant is selected from sodium carboxymethyl cellulose, polyvinyl pyrrolidone, polyvinyl alcohol, sodium dodecylbenzene sulfonate and polyethylene glycol.

4. The rare earth bionic military webbing according to claim 1, characterized in that: The flux is selected from boric acid, phosphoric acid, potassium oxide and sodium oxide.

5. The rare earth bionic military webbing according to claim 1, characterized in that: The pH regulator is selected from ammonia water and sodium hydroxide solution.

6. The rare earth bionic military webbing according to claim 1, characterized in that: The aqueous adhesive is selected from aqueous polyurethane and aqueous acrylate.

7. The rare earth bionic military webbing according to claim 1, characterized in that: The fixing agent is selected from fixing agent Y, M, cross-linking fixing agent DE and cross-linking fixing agent Indosol CR.

8. The rare earth bionic military webbing according to claim 1, characterized in that: The printing paste is selected from guar gum, tamarind gum and sodium alginate.

9. A rare earth bionic military webbing as claimed in any one of claims 1 to 8, characterized in that: The mass ratio of the chromium oxide, the rare earth compound, the dispersant and the flux is 100:100-400:1-20:1-4.

10. A method for preparing a rare earth bionic military webbing according to any one of claims 1 to 9, characterized in that: The steps include: (1) A rare earth compound, deionized water and a dispersant are stirred until completely dissolved, and then a pH adjuster is added dropwise to adjust the pH to 9-11. After stirring for 1-6 hours, the resulting precipitate is washed and filtered, and then dried at 80-120° C. for 4-12 hours to obtain a rare earth hydroxide A; (2) grinding and mixing the rare earth hydroxide A, chromium oxide and flux obtained in step (1) to obtain a mixture B; (3) The mixture B is first heated to 400-600° C. and calcined for 1-3 h, and then further heated to 700-1000° C. and calcined for 1-4 h. After the calcination is completed, the mixture is taken out and ball-milled to a particle size D50 of 300 nm-25 μm to obtain a rare earth bionic pigment C; (4) dispersing and blending the rare earth bionic pigment C and the aqueous binder uniformly to obtain a rare earth bionic pigment C with a solid content of 50-80%, that is, obtaining a rare earth bionic coating D; (5) mixing and dispersing the rare earth bionic coating D, printing paste, fixing agent and deionized water in a weight ratio of 2-10:45:4:41-49 to obtain a mixture E; (6) The mixture E is evenly printed on the surface of the ribbon and dried to obtain the rare earth bionic military ribbon.

Images