Agricultural film light conversion agent, its preparation method and application, and agricultural film manufacturing method

A light-changing agent and agricultural film technology, which is applied in botany equipment and methods, chemical instruments and methods, luminescent materials, etc., can solve the problems of unstable performance and short duration of light-changing agents, and achieve simple and relatively Good capacitance and good optical characteristics

Inactive Publication Date: 2011-12-14
杨凌冠阳农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to overcome the defects of unstable performance and short duration of the existing rare earth organic complex light conversion agent, and provide a new agricultural film light conversion agent, its preparation method and application and agricultural film production method, the technical problem to be solved is to make it increase the luminous intensity and have a long duration, so that it is more suitable for practical use and has industrial utilization value

Method used

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  • Agricultural film light conversion agent, its preparation method and application, and agricultural film manufacturing method
  • Agricultural film light conversion agent, its preparation method and application, and agricultural film manufacturing method
  • Agricultural film light conversion agent, its preparation method and application, and agricultural film manufacturing method

Examples

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Embodiment 1

[0041] To prepare reference samples for measuring the emission intensity of the agricultural film light conversion agent in other embodiments of the present invention, the preparation method of the agricultural film light conversion agent of the present invention mainly includes the following steps:

[0042] Weigh Y 2 O 3 100.00g, Eu 2 O 3 6.50g, mixed and dissolved in 5MOL / L HCl solution, adjusted the pH to 7 with ammonia water, placed on the 80℃ water solution, added 15wt% oxalic acid solution at 80℃ under stirring, precipitation appeared, aged for 2 hours and filtered. Wash the precipitate with hot deionized water until it is neutral, dry at 100°C, put it into a corundum crucible, burn and decompose at 950°C for 3 hours, cool to room temperature in the furnace, pulverize, sieved with 100 mesh, washed with water, and dried to obtain Y 2 O 3 , Eu 2 O 3 Co-precipitate.

[0043] Weigh the above Y 2 O 3 , EU 2 O 3 Co-precipitate 100g, (NH 4 ) 2 HPO 4 66.00g, NH 4 VO 3 44.46g, H 3 B...

Embodiment 2

[0046] The preparation method of the agricultural film light transfer agent of the preferred embodiment of the present invention mainly includes the following steps:

[0047] Weigh Y 2 O 3 107.51g, Eu 2 O 3 7.49g Prepare co-precipitate according to Example 1, weigh the above Y 2 O 3 , Eu 2 O 3 Co-precipitate 100g (NH 4 ) 2 HPO 4 70.00g NH 4 VO 3 39.00g, Bi 2 O 3 0.93g H 3 BO 3 3.70g. The remaining conditions are the same as in Example 1 to obtain the target product.

[0048] The total content of rare earth oxides in the product measured by gravimetric method is close to the theoretical value. The composition and stoichiometric formula of the product measured by atomic absorption spectroscopy and plasma method (Y 0.95 Bi 0.005 Eu 0.04 )(P 0.62 V 0.38 )O 4 The same. Use Hitachi F-850 fluorescence spectrometer to measure the above agricultural film light transfer agent, the excitation wavelength is 280nm-------400nm, and the emission peak wavelength is 619nm (such as figure 1 Show...

Embodiment 3

[0050] The preparation method of the agricultural film light transfer agent of the preferred embodiment of the present invention mainly includes the following steps:

[0051] Weigh Y prepared in Example 2 2 O 3 , Eu 2 O 3 Co-precipitate 100g, (NH 4 ) 2 HPO 4 64.70g NH 4 VO 3 43.50g, Bi 2 O 3 0.93g. The remaining conditions are the same as in Example 1 to obtain the target product.

[0052] The total content of rare earth oxides in the product measured by gravimetric method is close to the theoretical value. The composition and stoichiometric formula of the product measured by atomic absorption spectroscopy and plasma method (Y 0.95 Bi 0.005 Eu 0.04 )(P 0.57 V 0.43 )O 4 The same. Use Hitachi F-850 fluorescence spectrometer to measure the above agricultural film light transfer agent, the excitation wavelength is 280nm-------400nm, and the emission peak wavelength is 619nm (such as figure 1 Shown), the relative emission intensity is: 113%.

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Abstract

The present invention relates to an agricultural film light conversion agent, its preparation method and application, and an agricultural film manufacturing method, in which Bi, Sb, Sm, and Tb are added to the basic components of vanadium europium phosphate y(pv)O4:Eu and co-doped One or two kinds of heteroions, according to the amount of each component in the following stoichiometric formula, i.e. a, b, c, the limitation of x, synthesized agricultural film light-changing agent, this agricultural film light-changing agent is used as additive Prepare a light-changing agricultural film or a multi-functional light-changing agricultural film that is dripping, defogging, and aging-resistant. The agricultural film light-changing agent is added to the outer layer or / and the middle layer, and the added amount between layers is different or the same, and the added amount is 0.1wt%-0.6wt%. The agricultural film light converting agent prepared by the method of the invention has high luminous intensity, stable chemical properties and good light properties. The agricultural film produced by the agricultural film light-converting agent has light-converting property, which enhances the red light component in the sunlight in the shed, strengthens photosynthesis, makes crops ripen earlier, increases yield and reduces pests and diseases.

Description

Technical field [0001] The invention relates to a light transfer agent in the field of agricultural film, in particular to an inorganic compound light transfer agent for agricultural film, a preparation method and application thereof, and an agricultural film manufacturing method. Background technique [0002] The light conversion agricultural film started in the 1970s and 1980s. In the agricultural film made of polyethylene, ethylene / vinyl acetate copolymer (EVA) and other high molecular polymers, a photoluminescent material, namely a light conversion agent, was added. When the sunlight passes through the shed film, it converts the ultraviolet light in the sunlight spectrum that has little or no harmful effects on crops into red-orange light required for crop photosynthesis, which is necessary for crop photosynthesis. The role of light conversion agent improves the light quality of natural light and strengthens the photosynthesis of crops. Due to the increase in the utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/83C08L23/00C08K3/32A01G9/14A01G9/22
CPCY02A40/25
Inventor 田小武刘全泰
Owner 杨凌冠阳农业科技有限公司
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