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Organic photochromic composite nano materials and method for preparing same

A nano-composite material and photochromic technology, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of complex organic photochromic materials, and achieve the effects of fast fading, high chroma, and excellent fatigue resistance

Inactive Publication Date: 2005-06-22
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
  • 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.

[0030] Compound: Carrier: Antioxidant: Light Stabilizer: Singlet Oxygen Quencher by weight ratio 8:40:0.8:0.1:0.1.

[0031] Detection:

[0032] The above-mentioned colorless photochromic nano...

Embodiment 2

[0034] Automobile and architectural glass are prepared with photochromic PVB film. Weigh 50g of the photochromic nanocomposite 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 the protection of nitrogen. Photochromic PVB film. (film machine: Brabender model: PLE-330)

Embodiment 3

[0036] Preparation of photochromic printing pastes. The method is: take 50 g of the photochromic nano-composite fine powder prepared above and add it to 500 g of printing and dyeing paste, thoroughly sand and pulverize it, and then make photochromic printing and dyeing paste after it is completely uniform, and then print and dye them on the Apparel and travel cultural shirts show beautiful patterns of various colors under sunlight or ultraviolet light.

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Abstract

The invention relates to an organic photochromic composite nano materials and method for preparing same, wherein the material has the structural formula of [R1]-[M]-[R2][R3], wherein [M] is naphtha or benzoxazine, spiro-pyrans and naphthopyrans chemical functional group, [R1] is straight chain alkyl, alkoxy, halogen, halogenated alkyl, nitro, [R2] is alkoxy, cycloalkyl, oxygen-containing, nitrogen-containing heterocycte, halogen, nitro. [R3] is straight chain alkyl, branched chain alkyl, hydroxyalkyl, carboxylic alkyl. The carrier can employ PVB resin, polystyrene resin, polymethyl methacryate, acetyl butyryl cellulose, PET resin powder, or polyvinyl pyrrolidon resin. The material also includes anti-oxidant, hindered amine light stabilizer, and single state oxygen quencher.

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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IPC IPC(8): C09K11/06
Inventor 孟继本黄华鸣谈廷风陈培丽高用彬
Owner NANKAI UNIV
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