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Long glow powder micro-shell material for traffic safety prompt of traffic facilities and preparation method of long glow powder micro-shell material

A technology for driving safety and traffic facilities, applied in luminescent materials, traffic signals, chemical instruments and methods, etc., can solve the problems of aging and falling off of wear-resistant layers, affecting the absorption of light energy and luminous efficiency of phosphor coatings, and coating failures.

Active Publication Date: 2022-05-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of the phosphor is that the cost of the wear-resistant layer is higher than that of the plastic tape and the reflective marker; and after being exposed to the wind and the sun, the wear-resistant layer will age and fall off, which will expose the phosphor coating, which will be damaged after dust deposition. It is easy to greatly affect the absorption of light energy and luminous efficiency of the phosphor coating
Moreover, the coatings of many phosphor materials are completely ineffective when exposed to water or liquids.

Method used

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  • Long glow powder micro-shell material for traffic safety prompt of traffic facilities and preparation method of long glow powder micro-shell material
  • Long glow powder micro-shell material for traffic safety prompt of traffic facilities and preparation method of long glow powder micro-shell material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 2.0g fluorinated cardanol to the flask, then add 20mL anhydrous 1,1,2,2-tetrachloroethane, then add 1.0mL tetraethyl orthosilicate, control the temperature at 5-10°C, and stir Add 1.0 g of vinyl double caps dropwise, and continue stirring for 30 minutes after completion to obtain a fluorinated cardanol silane coupling agent, which can be used directly without purification. ;

[0025] Preparation of silica hollow microspheres: select polystyrene microspheres of 100-200 microns, treat the surface with the above-mentioned silane coupling agent, and then treat with tetraethyl orthosilicate and ammonia water to form a core-shell structure of silica Silicon-polystyrene microspheres, observe the production rate and thickness of the shell, adjust the concentration and total amount of ammonia water, and take out when the thickness is ≤0.5mm;

[0026] After dissolving polystyrene with tetrachloroethane solvent, hollow silica microspheres are obtained;

[0027] Soak the holl...

Embodiment 2

[0031]Add 2.2g of perfluoroheptenylphenol into the flask, then add 20mL of anhydrous 1,1,2,2-tetrachloroethane, then add 1.0mL of tetraethyl orthosilicate, control the temperature at 5-10°C Next, add 1.5g of vinyl double caps dropwise, and continue stirring for 30 minutes after the end to obtain a perfluoroheptenylphenol silane coupling agent, which can be used directly without purification;

[0032] Preparation of silica hollow microspheres: select polystyrene microspheres of 150-250 microns, treat the surface with the above-mentioned silane coupling agent, and then treat with tetraethyl orthosilicate and ammonia water to form a core-shell structure of silica Silicon-polystyrene microspheres, observe the production rate and thickness of the shell, adjust the concentration and total amount of ammonia water, and take out when the thickness is ≤0.5mm;

[0033] After dissolving polystyrene with tetrachloroethane solvent, obtain hollow silica microspheres with a diameter of 0.1-0....

Embodiment 3

[0038] Add 2.0g fluorinated cardanol II to the flask, then add 20mL anhydrous 1,1,1-trichloropropane, then add 1.5mL tetraethyl orthosilicate, control the temperature at 5-10°C, drop 1.0g hydrogen-containing double-capped head, continue to stir for 30 minutes after the end, and obtain the fluorinated cardanol silane coupling agent, which can be used directly without purification;

[0039] Preparation of silica hollow microspheres: select polystyrene microspheres obtained by emulsion polymerization of 100-200 microns, flatten them at 80-90°C to form ellipsoids, and control the spacing so that the eccentricity of the ellipsoids is 1.5-1.6 Cool down to room temperature, after the surface is treated with the above-mentioned silane coupling agent, and then treated with tetrapropyl orthosilicate and 10% methylamine aqueous solution, the silica-polystyrene microspheres with a core-shell structure are formed, and the shell is observed. Production rate and thickness, adjust the concent...

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Abstract

The invention discloses a long glow powder micro-shell material for traffic facility driving safety prompting and a preparation method of the long glow powder micro-shell material, and belongs to the field of traffic facilities, the long glow powder micro-shell material is composed of a transparent hollow silicon dioxide shell and long glow powder, the long glow material is of a micro-powder structure and is sealed and packaged in a hollow micro-shell, and the long glow powder is a transparent hollow silicon dioxide shell. In this way, an all-around protective shell is formed outside the long glow powder, the hollow micro-shell is made of modified silicon dioxide, materials are convenient to obtain, the price is low, the chemical stability is high, and after silicon dioxide is treated with a silane coupling agent, the atom arrangement of the silicon dioxide is similar to that of quartz, so that the structural strength is high, damage is not prone to occurring, and the long glow powder inside can be effectively protected; the long glow powder is reliably separated from dust, rainwater and external liquid, so that the luminous efficiency of the long glow powder is prevented from being reduced after the long glow powder encounters the liquid such as the dust or the rainwater.

Description

technical field [0001] The invention belongs to the field of traffic facilities, and in particular relates to a long-glow powder microshell material used for driving safety reminders of traffic facilities and a preparation method thereof. Background technique [0002] Due to the poor visibility at night, the probability of safety accidents at night is much higher than that during the day, and traffic accidents are more likely to occur at night on rainy days. In order to avoid traffic accidents at night, warning lights are generally installed on both sides of bridges or tunnels on roads with limited road width (especially expressways). These warning lights achieve the warning effect by actively emitting light. However, for general roads or third and fourth grade roads, warning lights cannot be applied at present because power supply lines cannot be provided along the road. In addition, even if warning lights are used, because of the need for long-term power consumption and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/60C09K11/64C09K11/56C09K11/59E01F9/615
CPCC09K11/025C09K11/605C09K11/7792C09K11/7421C09K11/59C09K11/7442E01F9/615
Inventor 张丽芳吴双叶豪强
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS