Anti-aging light conversion film and preparation method thereof

An anti-aging and thin-film technology, applied in chemical instruments and methods, luminescent materials, plant protection covers, etc., can solve the problem of weak anti-ultraviolet aging ability of light-changing agents, decline of light-converting performance of organic light-changing agents, and unsatisfactory utilization rate, etc. problem, achieve the effect of improving anti-ultraviolet aging ability, improving application value, and increasing dry matter accumulation of plants

Active Publication Date: 2011-08-31
JIANGSU BOILN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the Eu(III) organic light conversion agent has high light conversion efficiency, the utilization rate is not ideal, and the anti-ultraviolet aging ability of the light conversion agent is very weak, and there is a serious decline in the light conversion performance of the organic light conversion agent during long-term use.

Method used

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  • Anti-aging light conversion film and preparation method thereof
  • Anti-aging light conversion film and preparation method thereof
  • Anti-aging light conversion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh tetraethyl orthosilicate and absolute ethanol according to the ratio of 1:25 by volume to form solution I; weigh distilled water and solution I according to the ratio of 1:15 by volume, and pass through 0.1M ammonia water Adjust the pH value to 9 to prepare Sol II; make the rare earth light converting agent Sm 0.5 Yb 0.5 (TTA) 3 Add phen to Sol II at a ratio of 5.0g / L, heat and react in a water bath at 40°C for 8 hours to obtain a precipitated product; filter the reaction product, wash twice with absolute ethanol and distilled water, and dry in an oven at 60°C , making SiO 2 Surface Modified Sm 0.5 Yb 0.5 (TTA) 3 phen light conversion agent, the excitation spectrum and emission spectrum of the light conversion agent are as follows figure 1 with figure 2 shown. Then, the SiO 2 Surface Modified Sm 0.5 Yb 0.5(TTA) 3 The phen light-changing agent is dispersed in 100 parts by weight of PVC polymer in parts by mass of 1.5 parts, dispersed by a blending meth...

Embodiment 2

[0024] Weigh tetraethyl orthosilicate and absolute ethanol at a ratio of 1:15 by volume to form solution I; weigh distilled water and solution I at a ratio of 1:12 by volume, and adjust the pH with 0.05M sodium hydroxide solution value to 8, formulated as Sol II; the rare earth light-transforming agent Sm 0.5 Tb 0.5 (TTA) 3 Add phen to Sol II at a ratio of 5g / L, heat and react in a water bath at 50°C for 6 hours to obtain a precipitated product; filter the reaction product, wash twice with absolute ethanol and distilled water, and dry it in an oven at 80°C. Prepared SiO 2 Surface Modified Sm 0.5 Tb 0.5 (TTA) 3 phen light conversion agent, its transmission electron microscope picture is as follows image 3 As shown, it can be seen from the transmission electron microscope that the light conversion agent Sm 0.5 Tb 0.5 (TTA) 3 phen has been replaced by SiO 2 Wraps up nicely. SiO 2 Surface Modified Sm 0.5 Tb b 0.5 (TTA) 3 The phen light-changing agent is dispersed i...

Embodiment 3

[0026] Weigh absolute ethanol and butyl titanate at a volume ratio of 6:1, dissolve them, and make solution I; weigh absolute ethanol, distilled water, and acetic acid at a volume ratio of 6:2:1, and make solution II ; Solutions I and II were mixed and reacted in a volume ratio of 8:1, and the pH value was adjusted to 5 with 1.0M HCl, and Sol III was obtained after sufficient stirring; the Sm 0.3 Gd 0.4 Yb 0.3 (TTA) 3 Dipy 2 Rare earth light-changing agent was added to Sol III at a ratio of 6.0g / L, reacted in a water bath at 40°C for 6 hours, and a precipitated product was obtained; the product was filtered, washed repeatedly with absolute ethanol and distilled water for 3 times, and dried in an oven at 50°C , making TiO 2 Surface Modified Sm 0.3 Gd 0.4 Yb 0.3 (TTA) 3 Dipy 2 Rare earth organic light conversion agent. TiO 2 Surface Modified Sm 0.3 Gd 0.4 Yb 0.3 (TTA) 3 Dipy 2 The rare-earth organic light-changing agent is dispersed in 100 parts of PE polymer in ...

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Abstract

The invention provides an anti-aging light conversion film and a preparation method thereof. The invention is characterized by uniformly dispersing 0.005-5 parts by weight of SiO2 or TiO2 surface modified rare earth organic light conversion agent SmxM1-x (TTA)mLn into 100 parts of polyolefin to obtain a surface modified rare earth light conversion film through blow molding or tape casting. The film of the invention can convert ultraviolet light and near infrared light in solar radiation into red light of 620nm-660nm, has strong anti-ultraviolet aging capacity and high emission efficiency and can promote photosynthesis of plants, and the strongest emission wavelength (647nm) is close to the maximum absorption peak positions of chlorophyll a and chlorophyll b.

Description

Technical field: [0001] The present invention relates to an anti-aging light-transforming film and a preparation method thereof, in particular to a film belonging to an anti-aging modified rare-earth organic light-transforming agent system that promotes plant photosynthesis and a preparation method thereof, which is expected to be used in agriculture with ecological imitation characteristics Light conversion system and solar photochemistry. Background technique: [0002] Agriculture is the foundation of the national economy, and agricultural plastic film is also a key industry in the country. It is estimated that the consumption of agricultural film in my country will exceed 2 million tons by 2010, and the market prospect is very broad. The development of agricultural plastic film has roughly gone through the following stages: the first generation of ordinary plastic agricultural film; the second generation of functional plastic agricultural film (including anti-aging, anti-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/06C08L23/08C08L31/04C08K9/02C08K5/56C09K11/06A01G13/02
Inventor 陆春华倪亚茹徐程许仲梓
Owner JIANGSU BOILN PLASTICS CO LTD
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