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Modified PC infrared invisible sheet and preparation method thereof

An infrared and invisible technology, applied in hat products, instruments, optical components, etc., can solve problems such as high cost and achieve good market prospects

Pending Publication Date: 2022-05-13
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of my country's infrared stealth films are purchased from companies such as Oakley in the United States, and the cost is extremely high. In particular, some countries restrict the sale of such high-end products with military use to my country due to the confidentiality needs of national defense technology.

Method used

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  • Modified PC infrared invisible sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Prepare modified PC infrared stealth sheet, the amount of each raw material is shown in Table 1, and the preparation method is as follows:

[0048] First add infrared nano powder A with a particle size of 10nm-25nm, infrared nano-powder B with a particle size of 5nm-15nm, dispersant with a particle size of 1um-2um, lubricant with a particle size of 1um-2um, plasticizer, and PC masterbatch in sequence , carry out stirring and blending, and then use a twin-screw extruder to carry out pumping and granulation, so as to obtain modified PC particles.

[0049] Specifically, among the above raw materials: infrared nano powder A is silicon dioxide nano powder, titanium dioxide nano powder, ferric oxide nano powder, aluminum oxide nano powder, tungsten oxide nano powder, cesium tungstate (Cs2WO4) nano powder One or two of them; infrared nano powder B is tungsten oxide nano powder, antimony oxide nano powder, indium oxide nano powder, tin oxide nano powder, GTO nano powder, ATO (a...

Embodiment 2-6

[0056] To prepare the modified PC infrared stealth sheet, the dosage of each raw material is shown in Table 1. The preparation method is the same as in Example 1.

Embodiment 7

[0058] The modified PC particles prepared in Example 1 were optically detected, and it was found that the modified PC particles had anti-infrared (780-2000nm wavelength) function, the inorganic nano powder was uniformly dispersed, and the particles had high transparency after granulation. The infrared absorption at 780nm to 2000nm can reach more than 90%, and the visible light transmittance can reach more than 85%. After being molded into lenses by variable temperature, the obtained modified PC infrared contact sheet has infrared stealth performance, which can reduce or zero the transmittance of electromagnetic waves radiated by the target in the working band of the infrared detector, thereby reducing the target's radiation in the corresponding wavelength range. Radiation can effectively reduce the infrared exposure of the target, so as to achieve the purpose of stealth.

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Abstract

The invention relates to a modified PC infrared invisible sheet and a preparation method thereof. The modified PC infrared invisible sheet comprises the following components in parts by weight: 3-5 parts of infrared nano powder A, 5-8 parts of infrared nano powder B, 1-2 parts of a dispersing agent, 1-2 parts of a lubricating agent, 60-80 parts of a plasticizer and 1000 parts of polycarbonate (PC) master batch, the infrared nano powder A has a strong absorption characteristic in a near-infrared region and has high transmittance in a visible light region; and the infrared nano powder B can effectively block infrared and ultraviolet radiation and has extremely weak absorption rate on visible light. The modified PC infrared contact lens can shield infrared rays of middle and far infrared bands captured by a thermal imager, radiation of a target behind the infrared contact lens in a corresponding wavelength range is reduced, the transmissivity of electromagnetic waves radiated by the target in a working band of an infrared detector is reduced or is zero, infrared exposure of the target is effectively reduced, and the service life of the target is prolonged. Therefore, the purpose of invisibility is achieved.

Description

technical field [0001] The invention relates to the field of infrared stealth technology, in particular to a modified PC infrared stealth sheet and a preparation method thereof. Background technique [0002] The human eye and the surrounding muscles will radiate electromagnetic waves, although the wavelengths radiated by different use states and different parts are different, and they are all included in the range of infrared wavelengths. Infrared detectors use this radiant heat effect to detect targets. That is, the temperature rises after receiving radiant energy, and then the temperature change is measured by the contact temperature measuring element, so as to output an electrical signal or a visible image to detect the existence of the object, thereby realizing the detection of the target. [0003] At present, the temperature resolution of the infrared imaging system has reached 0.1K, and the spatial resolution is also very high. The slight difference between the camouf...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/06C08K3/36C08K3/22C08K3/24G02C7/04G02B1/04G02B5/22A42B3/18
CPCC08L69/00G02C7/04G02B1/043G02B5/22A42B3/185C08K2003/2241C08K2201/011C08K2003/2272C08K2003/2227C08K2003/2258C08K2003/2231C08L23/06C08K3/36C08K3/22C08K3/24C08K3/2279
Inventor 郭幼丹
Owner JIMEI UNIV
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