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Water-based wave-absorbing coating for camouflage nets, double-layer structure camouflage net prepared from water-based wave-absorbing coating, and preparation method thereof

A technology of wave-absorbing coating and wave-absorbing coating, which is applied in the field of wave-absorbing materials, can solve problems such as unsuitability for large-scale production, high material cost, and heavy coating weight, and achieve suitable for large-scale production, good compatibility, and absorption good effect on wave performance

Inactive Publication Date: 2020-06-05
南京南大波平电子信息有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the absorbing performance of this type of coating meets the target requirements, it is not suitable for large-scale production because of its heavy coating weight, high material cost, complicated process and not environmentally friendly.

Method used

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  • Water-based wave-absorbing coating for camouflage nets, double-layer structure camouflage net prepared from water-based wave-absorbing coating, and preparation method thereof
  • Water-based wave-absorbing coating for camouflage nets, double-layer structure camouflage net prepared from water-based wave-absorbing coating, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A double-layer structure camouflage net is prepared from a coated cloth coated with water-based wave-absorbing paint, and is divided into an inner layer and an outer layer. The outer layer is cut with a curved die, and the cut cloth is turned up to form a scattering structure; the inner layer is made of circular die-cut holes as air holes, and the inner and outer layers are sewn together to form a double-layer camouflage net.

[0029] The water-based wave-absorbing coating consists of the following components in parts by mass: 20 parts of distilled water

[0030] 65 parts acrylic resin

[0031] Granulated carbon black 3 parts

[0032] Carbon black 4 parts

[0033] graphite 3 parts

[0034] Dispersant 750W 1.5 parts

[0035] 0.3 parts of defoamer

[0036] Hydroxyethyl cellulose 0.4 part

[0037] 1.5 parts of cross-linking agent

[0038] Further, the granulated carbon black is microsphere-packed carbon black particles with a particle size of 0.5-0.8 mm.

[0039] F...

Embodiment 2

[0049] The difference from Example 1 is that the water-based wave-absorbing coating consists of the following components:

[0050] 15 parts distilled water

[0051] Acrylic resin 75 parts

[0052] Granulated carbon black 3 parts

[0053] Carbon black 4 parts

[0054] graphite 3 parts

[0055] Dispersant 750W 1.5 parts

[0056] 0.3 parts of defoamer

[0057] Hydroxyethyl cellulose 0.4 part

[0058] 1.5 parts of cross-linking agent

[0059] The preparation method is the same as that in Example 1. For the absorbing coating prepared above, when the square resistance of the coated coating reaches 280Ω, its surface density is 30g / m 2 , Peel strength 5.8N / cm.

[0060] In Example 2, the proportion of acrylic resin in the formula is increased, and the mass proportion of the absorbent is relatively decreased. The prepared wave-absorbing coating needs to achieve the same wave-absorbing performance as in Example 1. The weight required is higher. The advantage of this formula is that...

Embodiment 3

[0062] The difference from Example 1 is that the water-soluble wave-absorbing coating consists of the following components:

[0063] 20 parts of distilled water

[0064] 65 parts acrylic resin

[0065] Granulated carbon black 3 parts

[0066] Carbon black 6 parts

[0067] graphite 1 part

[0068] Dispersant 750W 1.5 parts

[0069] 0.3 parts of defoamer

[0070] Hydroxyethyl cellulose 0.4 parts

[0071] 1.5 parts of cross-linking agent

[0072] The preparation method is the same as in Example 1. The absorbing coating prepared above has a surface density of 31g / m when the square resistance of the coated coating reaches 280Ω 2 , Peel strength 4N / cm.

[0073] In Example 3, the mass percentage of graphite in the absorber is reduced, resulting in a decrease in the electrical conductivity of the coating, and the prepared wave-absorbing coating requires a higher weight to achieve the same wave-absorbing properties as in Example 1. The peel strength of this formula is still go...

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Abstract

The invention relates to the field of wave-absorbing materials, in particular to a water-based wave-absorbing coating forcamouflage nets, a double-layer structure camouflage net prepared from the water-based wave-absorbing coating, and a preparation method thereof. the water-based wave-absorbing coating for the camouflage nets is composed of the following components in parts by weight: 15 to 25 parts of distilled water, 65 to 75 parts of acrylic resin, 3 parts of granulated carbon black, 4 to 6 parts of carbon black, 1 to 3 parts of graphite, 1.5 to 2 parts of dispersant 750W, 0.1 to 0.3 partof a defoaming agent, 0.4 to 0.5 part of hydroxyethyl cellulose, and 1.5 parts of a cross-linking agent. The invention further discloses the double-layer structure camouflage net which comprises basecloth and a water-based wave-absorbing coating layer, the base cloth of the camouflage net is made of polyester oxford cloth, and the surface of the oxford cloth is coated with the water-based wave-absorbing coating. According to the prepared double-layer structure camouflage net, the wave-absorbing frequency band and the wave-absorbing performance of the camouflage net are greatly improved whilethe environment resistance of the camouflage net is improved.

Description

technical field [0001] The invention relates to the field of wave-absorbing materials, in particular to a wave-absorbing coating for a camouflage net and a preparation method thereof. Background technique [0002] Camouflage and stealth is an important part of combat support and an effective means to counter military reconnaissance and attacks. Under the conditions of high-tech warfare, the role and status of camouflage become more prominent. Radar detection is the most widely used technology in military reconnaissance. Modern radar detection technology is quite mature, with wide detection frequency and strong recognition ability. It poses a great threat to the battlefield survival of tanks, vehicles and other weapons and equipment. Foreign militaries have always attached great importance to the research and development of camouflage technology. From the Second World War to the present, they have researched and developed a variety of camouflage and stealth equipment for ra...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/32C09D7/20
CPCC08K2201/003C08K2201/014C09D5/32C09D133/04C09D7/20C08K13/02C08K3/04
Inventor 周浩波陈震陈建王金平
Owner 南京南大波平电子信息有限公司
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