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Nano rare earth optical transfer agent in bionic state, Nano rare earth optical transfer agricultural film in bionic state, and preparation method thereof

A technology of light-changing agricultural film and light-changing agent, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of not having the characteristics of imitation ecology, easy loss, fast light-turning attenuation, etc., to improve luminous efficiency and enhance dispersion performance, solve the effect of poor stability

Inactive Publication Date: 2005-10-26
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The input-output ratio is 1:2~12, but this kind of light conversion film has the following problems: the rare earth complex light conversion agent only produces a single light (such as red light), so it does not have complete ecological characteristics; Under the action of ultraviolet light, the light stability of the light conversion film is poor, and the light conversion decays quickly; at present, when the rare earth light conversion agent interacts with the polymer, most of the light conversion agent powder is doped into the polymer to form a "doped Type rare earth polymer”, the light conversion agent has the disadvantages of uneven dispersion and easy loss in the polymer matrix, and some light conversion agents even have adverse effects with some additives of agricultural film Physical and mechanical properties will have a certain impact; agricultural light-converting films have a red light effect, due to the effect of atmospheric scattering, the loss of blue-violet light is significantly higher than red-orange light when sunlight reaches the plastic shed greenhouse, and most agricultural light-converting films currently have It is to convert ultraviolet light into red-orange light, and only increasing the red-orange light is not very ideal for promoting photosynthesis and growth of plants, and if the red-orange light is too strong, it will produce heat accumulation effect and make the temperature in the shed too high , hinder the growth of crops, and even burn them to death

Method used

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  • Nano rare earth optical transfer agent in bionic state, Nano rare earth optical transfer agricultural film in bionic state, and preparation method thereof
  • Nano rare earth optical transfer agent in bionic state, Nano rare earth optical transfer agricultural film in bionic state, and preparation method thereof
  • Nano rare earth optical transfer agent in bionic state, Nano rare earth optical transfer agricultural film in bionic state, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Will (La 0.9 SM 0.09 Eu 0.01 ) Cl 3 , α-naphthoic acid, 3-triethoxysilylpropyl dimethyl dodecyl ammonium chloride in a molar ratio of 1:4:2 at 20-40°C for 6 hours to obtain a new type of rare earth light conversion agent . Stir 0.5 parts of light-changing agent and 0.6 parts of clay with a cationic exchange capacity of 80meq / 100g at high speed in the presence of 20 parts of dispersion medium water to form a uniform material, and react at 20-200°C for 3-4 hours. The obtained product is washed, dried, and pulverized to become a functional organoclay compound (nano-mimetic rare earth light-changing agent); disperse 0.005 parts of nano-mimetic rare-earth light-changing agent in 100 parts of PVC polymer, blow molding or After tape-casting, the nano-imitation ecological rare earth light-converting agricultural film can be obtained.

Embodiment 2

[0033] Will (La 0.7 Gd 0.1 Eu 0.2 )NO 3 , p-toluic acid, 3-trimethoxysilylpropylmethylethylhexadecylammonium chloride in a molar ratio of 1:5:1 at 40-60°C for 4 hours to obtain a new type of rare earth agent. 1 part of light-changing agent and 10 parts of clay with a cationic exchange capacity of 90meq / 100g are stirred at high speed in the presence of 100 parts of ethanol as a dispersion medium to form a uniform material, and reacted at 60-70°C for 3-5 hours. After washing, drying and crushing, the obtained product is a functional organoclay compound (nano-mimetic rare earth light-changing agent); disperse 5 parts of nano-mimetic rare earth light-changing agent in 100 parts of PE, blow molding or casting After forming, the nano-imitation ecological rare earth light-converting agricultural film can be obtained.

Embodiment 3

[0035] Will (Ce 0.4 Y 0.2 Eu 0.4 ) Cl 3 , β-naphthoic acid, and 3-trimethoxysilylpropyldimethyloctadecylammonium bromide in a molar ratio of 1:8:2 were reacted at 150-200° C. for 3 hours to obtain a new type of rare earth light converting agent. 6 parts of light-changing agent and 7 parts of clay with a cation exchange capacity of 80meq / 100g are stirred at high speed in the presence of 200 parts of ethanol as a dispersion medium to form a uniform material, and reacted at 80-100°C for 4 hours. After washing, drying and crushing, the obtained product is a functional organoclay compound (nano-mimetic rare earth light-changing agent); disperse 4 parts of nano-mimetic rare earth light-changing agent in 100 parts of EVA, blow molding or casting After forming, the nano-imitation ecological rare earth light-converting agricultural film can be obtained.

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Abstract

The present invention relates to nano imitation ecological rare earth light-converting agent. It is a light-converting agent formed by making stable complex formed from nitrate or hydrochloride of trivalent europium, ntirate or hydrochloride of doped lanthanum, samarium, gadolinium, yttrium and cerium, organic aromatic carboxylic acid and long-chain organic ligand and clay implement intercatation reaction. Said invention also provides the molecular formula of said light-converting agent. The light-converting farm film prepared by using said light-converting agent contains 100 portions of polyolefine and 0.005-5 portions of the above-mentioned light-converting agent. Said invention can convert the UV-light into raddish orange light, blue light and green light with strongest photosynthesis, and can raise infrared light of greenhouse so as to meet growth requirements of different crops.

Description

technical field [0001] The present invention relates to an agricultural polymer polyolefin film and the light conversion agent system used therein, and a preparation method of the light conversion agricultural film, in particular to a nano-ecological imitation that converts ultraviolet light into blue-red band and infrared light Rare earth light converting agent system and nano-ecological imitation rare earth light converting agricultural film prepared by the light converting agent and its preparation method. Background technique [0002] Agriculture is related to the national economy and the people's livelihood, and is the foundation of the national economy. Agricultural plastic film, one of the three major means of production in my country's agriculture, is a key industry for national development. In 2000, the application volume of agricultural film in my country was about 930,000 tons. It is estimated that the agricultural film will exceed 2 million tons by 2010, and the ...

Claims

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Application Information

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IPC IPC(8): C09K11/77
Inventor 华佳捷周宁琳
Owner NANJING NORMAL UNIVERSITY
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