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 defi

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

Example Embodiment

[0028] Example 1

[0029] Preparation of photochromic nanocomposite material: Weigh 8g of the above photochromic compound 1, add 50mL of dichloromethane below 25℃ and stir to dissolve it, then add 1g of N,N-diethyl lauramide as a high boiling point solvent, After stirring evenly, add 40g solid PET (polyethylene terephthalate) nanometer resin powder, antioxidant 2,2'-methylene bis(4-methyl-6-tert-butylphenol) under stirring. ) 0.8 g, the light stabilizer is (LS-770), bis(2,2,6,6-tetramethyl-4-hydroxypiperidine) sebacate 0.1 g, singlet oxygen quencher, N, 0.1 g of nickel N-di-n-butyldithiocarbamate (UV-NBC). Stir evenly and fully absorb. Then, dichloromethane, a low-boiling point solvent, is completely evaporated under reduced pressure to obtain a photochromic nanocomposite material.

[0030] Compound: carrier: antioxidant: light stabilizer: singlet oxygen quencher in a weight ratio of 8:40:0.8:0.1:0.1.

[0031] Detection:

[0032] The colorless photochromic nanocomposite material p...

Example Embodiment

[0033] Example 2

[0034] Preparation of photochromic PVB film for automobile and architectural glass. Weigh 50g of the photochromic nanocomposite powder prepared above, stir and mix well with 2000g PVB resin powder, add 100mL of PVB plasticizer, stir and mix thoroughly, and extrude it by heating at 160℃ under the protection of nitrogen. Photochromic PVB film. (Film machine: Brabender Model: PLE-330)

Example Embodiment

[0035] Example 3

[0036] Preparation of photochromic printing and dyeing paste. The method is: weigh 50g of the photochromic nanocomposite powder prepared above and add it to 500g printing and dyeing paste, thoroughly sanding and pulverizing, and making the photochromic printing and dyeing paste after being completely uniform, and then printing and dyeing them separately Apparel and cultural shirts for tourism show beautiful patterns in 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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