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Liquid-phase sandwich nanometer colloid particle laser protective materials

A nano-colloid and laser protection technology, applied in optics, optical components, optical components, etc., can solve the problems of affecting safety, secondary damage, and low light damage threshold, and achieve high safety performance, effective protection, and large reliability. The effect of selecting a range

Inactive Publication Date: 2004-07-07
ELECTRONICS ENG COLLEGE PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two types of materials have the following disadvantages that are difficult to overcome: (1) The film layer of the reflective material is easy to fall off, which affects safety; and it is dependent on the direction of the incident laser, and cannot be protected in all directions, which is easy to cause secondary damage
(2) The cost of absorbing materials is high, and the visible light transmittance is low
(3) Under the condition of higher energy density radiation, these two types of materials are susceptible to light damage and are not repairable, and lose their protective performance, manifested in: the damage of the reflective film layer and the absorbing polymer substrate and absorption agent damage
(4) The functional substances of these two types of protective materials are mainly organic materials, and the light damage threshold is low
(5) The two types of protective materials are specific to the laser wavelengths they protect, and are only effective for specific design wavelengths, and the cost of use is relatively high

Method used

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  • Liquid-phase sandwich nanometer colloid particle laser protective materials
  • Liquid-phase sandwich nanometer colloid particle laser protective materials

Examples

Experimental program
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Effect test

Embodiment 1

[0031] see figure 1 , figure 2 .

[0032] The present invention has two pieces of glass sheets 1 to form a sandwich structure, an injection port 2 is arranged on the interlayer, and the silver nano colloid particle solution 4 is injected, and a rubber cap capsule 3 is set on the injection port 12, which acts as a seal to prevent the solution from flowing out. Elasticity can adjust the change of solution volume caused by the change of temperature; the glass sheet 1 is quartz glass or ordinary optical glass, the shape is square, polygonal or circular, the thickness of the glass is 3-5mm, and the thickness of the interlayer is 5-10mm.

[0033] Silver nano colloid particle solution raw material formula is

[0034] Ethylene glycol 100ml

[0035] Polyvinylpyridine 0.2g

[0036] Silver nitrate 50mg

[0037] Dissolve polyvinylpyridine and silver nitrate in ethylene glycol, and then irradiate with γ-irradiation for 30 hours. The obtained silver colloidal particle solution is furt...

Embodiment 2

[0039] Silver sulfide nano colloid particle solution raw material formula is

[0040] Tetrahydrofuran 100ml

[0041] Polyvinyl alcohol 0.5g

[0042] Silver nitrate 200mg

[0043] Thioacetamide 50mg

[0044] Dissolve polyvinyl alcohol and silver nitrate in tetrahydrofuran, then add thioacetamide, after dissolving, heat the solution to 50-160 degrees Celsius and keep it warm for 5-50 hours, and the obtained colloidal particle solution is further diluted with solvent to make silver sulfide nano colloid particle solution. That is, the laser protection material of the present invention is obtained.

Embodiment 3

[0046] The raw material formula of lead sulfide nano colloid particle solution is

[0047] Pyridine 100ml

[0048] Vinylpyridinone 0.5g

[0049] Lead nitrate 300mg

[0050] Thioacetamide 100mg

[0051] Dissolve vinylpyridinone and lead nitrate in pyridine, then add thioacetamide, after dissolving, heat the solution to 50-160 degrees Celsius for 5-50 hours, and further dilute the obtained colloidal particle solution with solvent to make silver sulfide Add 80 mg of Danthrene to the nano colloid particle solution to obtain the laser protection material of the present invention.

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Abstract

A laser protective plate is prepared by injecting solution of nano-glue particles into sandwich of two pieces of glasses. The nano-glue particles solution is prepared as the follows: silver nitrate or either of silver nitrate and lead nitrate together with thioacetanilide are dissolved in one or combined solvent of water, alcohol, glycol, benzene, pyridine and tetrahydrofuran with using one of polyvinyl pyridine, vinyl pyridinedone and polyvinyl alcohol as the stabilizer.

Description

technical field [0001] The invention belongs to a laser protective device, in particular to a laser protective sheet for protecting eyes from laser damage. Background technique [0002] At present, a series of laser protective materials have been developed at home and abroad, which can be divided into two categories: reflective and absorbing. The reflective material is coated with an optical reflective medium layer on the surface of the optical glass, and the reflective layer can reflect the incident laser to achieve the purpose of protection. This type of material has the characteristics of low cost and high visible light transmittance; the absorbing material is a special polymer The light absorber is added to the material, and the laser energy is absorbed by the absorber to achieve the purpose of laser protection. This type of material has good safety, stability, and all-round laser protection. These two types of laser protection materials have a common feature: the laser...

Claims

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Application Information

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IPC IPC(8): C03C4/08G02B1/14G02C7/10
Inventor 余大斌孙晓泉王自荣童忠诚
Owner ELECTRONICS ENG COLLEGE PLA
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