RE light transferring agent possessing ecological physiologic feature, light transferring film therewith and their prepn

A technology of physiological characteristics and light conversion agent, applied in the field of light conversion agent and light conversion film containing the light conversion agent, which can solve the problem of uneven dispersion of polymer matrix, poor light stability of light conversion film, low light transmittance, etc. problem, to achieve the effect of high light conversion and luminous efficiency, slow light attenuation, and high blue-to-red ratio

Inactive Publication Date: 2007-08-22
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem that exists is, one, rare earth complex light conversion agent mostly only produces single light (as red light; Eu(III) 5 D. 0 → 7 f 2 The emission peak of the transition is around 613nm) or low blue-red ratio light conversion; second, the light stability of the light conversion film is poor, and the light attenuation is fast; third, the light transmittance is low in the polymer matrix; fourth, Disadvantages such as uneven dispersion in the polymer matrix and easy loss

Method used

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  • RE light transferring agent possessing ecological physiologic feature, light transferring film therewith and their prepn
  • RE light transferring agent possessing ecological physiologic feature, light transferring film therewith and their prepn
  • RE light transferring agent possessing ecological physiologic feature, light transferring film therewith and their prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] In the solvent ethanol, add poly-N-vinylacetamide with a molar ratio of 1:1:1, o-phenanthroline and rare earth chloride EuCl 3 , after reacting at 50-70°C for 0.5 hours, filter, wash, and dry to obtain a kind of rare earth organic complex light conversion agent. Dissolve the light-changing agent in methylene chloride, mix it with the tetrahydrofuran solution of polyvinyl chloride (where the weight of polyvinyl chloride is 20,000 times the weight of the light-changing agent; the weight of the solvent is 10 times the weight of polyvinyl chloride), and fully stir , poured into a mold, and vacuum-dried until transparent, that is, a film that emits high-intensity blue-red dual light.

Embodiment 2

[0073] Add poly-N-vinylacetamide, triphenylphosphine oxide, and rare earth chloride EuCl in the solvent methanol in a molar ratio of 1:2:0.995:0.005. 3 and LaCl 3 , after reacting at 20-60°C for 2 hours, filter, wash, and dry to obtain a kind of rare earth organic complex light-changing agent. Dissolve the light-changing agent in dimethyl sulfoxide, mix it with the tetrahydrofuran solution of polyvinyl chloride (wherein the weight of polyvinyl chloride is 10,000 times the weight of the light-changing agent; the weight of the solvent is equal to the weight of polyvinyl chloride), fully stir, Pour it into a mold, and dry it in vacuum until it is transparent, and then you can get a film that emits high-intensity blue-red dual light.

Embodiment 3

[0075] Add poly-N-vinylacetamide, triphenylphosphine oxide, and rare earth chloride SmCl in the solvent methanol in a molar ratio of 2:2:0.997:0.003 3 and GaCl 3 , after reacting at 20-60°C for 3 hours, filter, wash, and dry to obtain a kind of rare earth organic complex light-changing agent. Dissolve the light-changing agent in acetone, mix it with the tetrahydrofuran solution of polyvinyl chloride (the weight of polyvinyl chloride is 15,000 times the weight of the light-changing agent; the weight of the solvent is 8 times the weight of polyvinyl chloride), stir well, and pour Put it into a mold, dry it in vacuum until it is transparent, and then get a film that emits high-intensity blue-red double light.

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Abstract

The RE light transferring agent possessing ecological physiologic feature has the general expression of ReML1(L2)1-3, where, the RE element Re is Eu(III) or Sm(III); the RE element M is Gd(III), La(III) Al(III) orMn(II); L1 is poly-N-vinyl acetamide or poly-N-vinyl isobutyramide; and L2 is acetyl salicylic acid, benzoyl acetone, o-phenanthroline or triphenyl oxyphosphine. The light transferring polyvinyl chloride film containing the light transferring agent consists of the light transferring agent 0.005-0.1 weight portions, polyvinyl chloride 100 weight portions, dispersing medium 100-1000 weight portions and assistant 0-10 weight portions. The light transferring polyvinyl chloride film can absorb 202-330 nm ultraviolet light and emit 380-580 nm bluish violet light and 580-710 nm red orange light, so as to meet the requirement of plant photosynthesis, increase yield of crop and improve quality of crop.

Description

technical field [0001] The invention relates to a light converting agent and a light converting film containing the light converting agent, in particular to a rare earth light converting agent with ecological and physiological characteristics, and a preparation method of the rare earth light converting agent; An agricultural rare-earth polyvinyl chloride light-converting film of a light agent, and a preparation method of the rare-earth polyvinyl chloride light-converting film. Background technique [0002] With the continuous deepening of the agricultural revolution, the development of agricultural light conversion film has attracted people's attention. Since the development of agricultural films, there are many kinds. According to the main raw materials, they can be divided into polyvinyl chloride film, polyethylene film, EVA (ethylene-vinyl acetate copolymer) film, polyester film, polyvinyl alcohol film, organic fluorine resin film, Acrylic resin film, etc. Among them, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/77C08K3/10C08L27/06C08J5/18
Inventor 黄晓华孙培培吴雯茹李邨
Owner NANJING NORMAL UNIVERSITY
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