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Organic photochromic composite nano materials and method for preparing same

A nanocomposite material and photochromic technology, applied in the direction of luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the complex problems of organic photochromic materials, achieve fast fading, high chroma, and excellent fatigue resistance Effect

Inactive Publication Date: 2006-05-24
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fatigue mechanism of organic photochromic materials is quite complicated, but there is definite evidence that it is a photodegradation reaction involving oxygen and absorbing ultraviolet energy

Method used

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  • Organic photochromic composite nano materials and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of photochromic nano-composite material: Weigh 8g of the above-mentioned photochromic compound 1, add 50mL of dichloromethane and stir to dissolve it below 25°C, then add 1g of N,N-diethyl lauramide as a high boiling point solvent, After stirring evenly, add 40g solid PET (polyethylene terephthalate) nanoscale resin powder under stirring, antioxidant 2,2'-methylene bis(4-methyl-6-tert-butylphenol ) 0.8 grams, the light stabilizer is (LS-770), sebacic acid bis (2,2,6,6-tetramethyl-4-hydroxypiperidine) ester 0.1 grams, singlet oxygen quencher, N, Nickel N-di-n-butyldithiocarbamate (UV-NBC) 0.1 g. Stir well to fully absorb. Then dichloromethane, a low-boiling solvent, was thoroughly distilled off under reduced pressure to obtain a photochromic nanocomposite material. Compound: Carrier: Antioxidant: Light Stabilizer: Singlet Oxygen Quencher by weight ratio 8:40:0.8:0.1:0.1.

[0030] Detection:

[0031] With the above-mentioned colorless photochromic nanocomp...

Embodiment 2

[0033] Automobile and architectural glass are prepared with photochromic PVB film. Weigh 50g of the photochromic nano-composite fine powder prepared above, stir and mix with 2000g of PVB resin powder, then add 100mL of PVB plasticizer, stir and mix well, and extrude by heating at 160°C under nitrogen protection. Photochromic PVB film. (film machine: Brabender model: PLE-330)

Embodiment 3

[0035] Preparation of photochromic printing pastes. The method is: weigh 50g of the photochromic nano-composite fine powder prepared above, add it to 500g of printing and dyeing paste, sand and pulverize it thoroughly, and make photochromic printing and dyeing paste after it is completely uniform, and then print and dye them on clothing separately. Apparel and travel cultural shirts, showing beautiful patterns in various colors under sunlight or ultraviolet light.

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Abstract

The invention relates to an organic photochromic nanocomposite material and a preparation method thereof. The structural formula is [R 1 ]-[M]-[R 2 ][R 3 ], wherein [M] is naphtho or benzospiro-azine, spiropyrans and naphthopyrans chemical functional groups, [R 1 ] is straight-chain alkyl, alkoxy, halogen, haloalkyl, nitro. [[R 2 ] is alkoxy, cycloalkyl, oxygen-containing, nitrogen-containing heterocycle, halogen, nitro, etc. [R 3 ] is straight-chain alkyl, branched-chain alkyl, hydroxyalkyl, carboxyalkyl. The carrier is PVB resin, polystyrene resin, polymethylmethacrylate, cellulose acetate butyrate, PET resin powder or polyvinylpyrrolidone resin. Also included are antioxidants, hindered amine UV absorbers and singlet oxygen quenchers. The invention has the characteristics of excellent fatigue resistance, long service life, fast color development, high chroma and fast fading, and can be used to prepare photochromic sun lenses, photochromic PVB films for automobiles and building glass, and photochromic textiles. Color-changing printing and dyeing paste, photochromic paint and ink materials, etc.

Description

technical field [0001] The invention relates to an organic photochromic material, in particular to an organic photochromic nanocomposite material and a preparation method thereof. Background technique [0002] Organic photochromic materials are widely used and attract much attention. But the following factors make it limited in real application. First of all, in most cases, photochromic compounds must have good photochromic properties in the molecular state, and only when they are effectively and uniformly dispersed in a medium (in most cases, polymers) can they have application value. This requires them to have good solubility, uniformity, compatibility and coordination in the medium. Otherwise, crystallization will occur in the medium, or fogging will ooze out on its surface, and the photochromic properties will be lost. Secondly, it is required to have stable performance in the medium, bright color development, fast fading speed, long service life and good fatigue resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D498/10C09K11/06
Inventor 孟继本黄华鸣谈廷风陈培丽高用彬
Owner NANKAI UNIV
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