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Preparation method of red-orange-light blue-violet light conversion agent for agricultural film

A technology of light-changing agent and red-orange light, applied in chemical instruments and methods, luminescent materials, etc., can solve the problem that light-changing agricultural film cannot be widely used, the validity period is only 2-3 months, and the dispersion of light-changing agent is not good, etc. Problems, to achieve good compatibility with the organic phase of agricultural film, conducive to healthy growth, and can convert a wide range of ultraviolet light

Inactive Publication Date: 2021-02-26
兴城熙凤科技实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned organic complex light conversion agent is added to the shed film, exposed to sunlight for a long time, under the action of ultraviolet light, the luminous intensity will drop rapidly, and a certain chemical reaction will also occur at the same time, causing the light conversion agent to decompose and deteriorate
In addition, in the production of agricultural film, various functional additives such as dripping agents, anti-fogging agents, antioxidants, light stabilizers, etc. are added due to the differences in structure and chemical properties with rare earth organic complexes. It leads to poor compatibility, poor dispersion of light-changing agents, and phase separation, resulting in reduced effective luminescent molecules, reduced luminous intensity, and shortened duration. Usually, the validity period is only 2-3 months. These uncertain factors restrict Light-changing agricultural film is still not widely used

Method used

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  • Preparation method of red-orange-light blue-violet light conversion agent for agricultural film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Among them, red-orange fluorescent powder: 3.5MgO 0.5MgF 2 · GeO 2 :Mn x 4+ (0<x≤0.5);

[0031] Preparation:

[0032] 1) Take x=0.15, weigh MgO and MgF respectively according to stoichiometric 2 、GeO 2 , MnCO 3 , fully mixed and evenly loaded into an alumina crucible, placed in a box-type air atmosphere furnace, burned at a temperature of 1120°C, and held for 8 hours.

[0033] 2) After cooling out of the furnace, pass through a 150-mesh sieve after crushing, and then use According to the ratio of ball to material = 2:1, the agate balls were ball milled and dissolved in a PVC material ball mill barrel, and the dissolution time was controlled for 30 minutes.

[0034] 3) After disbanding, transfer it to a PVC bucket, stir and wash it with deionized water for 3 times, then carry out vacuum filtration, and finally transfer it to a hot air circulation oven for drying at 120°C for 12 hours.

[0035] 4) After drying, the powder is cooled and passed through a 200-mesh ...

Embodiment 2

[0045] Among them, red-orange fluorescent powder: Y 2-x-y o 3 :Eu x 3+ m y (M=one or more of Gd, Bi, W, In, Ga, 0<x≤0.1, 0<y≤0.01);

[0046] Preparation:

[0047] 1) Take x=0.05, y=0.007, M=Gd, weigh Y respectively according to stoichiometric 2 o 3 、Eu 2 o 3 、Gd 2 o 3 , adding 0.3% by weight of SrB 4 o 7 As a flux, mix well and put it into an alumina crucible, place it in a box-type air atmosphere furnace, and burn it at 1300°C for 5 hours.

[0048] 2) After cooling out of the furnace, pass through a 150-mesh sieve after crushing, and then use According to the ratio of ball to material = 2:1, the agate balls were ball milled and dissolved in a PVC material ball mill barrel, and the dissolution time was controlled for 30 minutes.

[0049] 3) After disbanding, transfer it to a PVC bucket, stir and wash it with deionized water for 3 times, then carry out vacuum filtration, and finally transfer it to a hot air circulation oven for drying at 120°C for 12 hours.

[0...

Embodiment 3

[0060] Among them, the red-orange fluorescent powder: (Sr 1-x-y ,Mg y ) 3 (PO 4 ) 2 :Sn x 2+ (0

[0061] 1) Take x=0.05, y=0.10 and weigh SrCO respectively according to stoichiometry 3 , NH 4 h 2 PO 4 , SnO 2 , MgO, add 0.3% Li by weight 2 CO 3 As a flux, it is fully mixed and put into an alumina crucible and covered, placed in a box-type reduction furnace, reduced and burned at 1180°C under a 10% hydrogen reducing atmosphere, and the holding time is 5 hours.

[0062] 2) After cooling out of the furnace, pass through a 150-mesh sieve after crushing, and then use According to the ratio of ball to material = 1:1, the agate balls were ball milled and dissolved in a PVC material ball mill barrel, and the dissolution time was controlled for 30 minutes.

[0063] 3) After disbanding, transfer it to a PVC bucket, stir and wash it with deionized water for 3 times, then carry out vacuum filtration, and finally transfer it to a hot air circulation oven fo...

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Abstract

The invention relates to the field of chemical engineering, in particular to a preparation method of a red-orange-light blue-violet light conversion agent for an agricultural film. The red-orange-light blue-violet light conversion agent is an inorganic compound, a synthetic component is prepared by a high-temperature solid-phase method, and then surface treatment is carried out by a silane coupling agent. The red-orange-light blue-violet light conversion agent for the agricultural film is good in compatibility with an organic phase of the agricultural film, good in dispersity, high in bindingforce, wide in ultraviolet light conversion range, high in light conversion efficiency, high in light conversion effect and photosynthesis matching degree and capable of effectively promoting photosynthesis needed by crop growth in an agricultural film shed. The light conversion efficiency is high, the light conversion service life can reach two years or longer, the crop quality is obviously improved, plant diseases and insect pests are reduced, and the cultivated crops have the excellent functions of being high in yield, good in quality and the like.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of a red-orange light and blue-violet light conversion agent for agricultural film. Background technique [0002] Light-changing agricultural film began in the 1970s and 1980s. As a functional component, the light-changing agent was added to the raw materials for making agricultural film to make light-changing agricultural film. When sunlight passes through the agricultural film, the light conversion agent converts the ultraviolet light that has little effect on crops in the sunlight spectrum into red-orange light or blue-violet light, which are necessary for photosynthesis of crops. Therefore, the light-changing agent improves the light quality of natural light, strengthens the photosynthesis of crops, increases the utilization rate of light energy, increases crop production, early maturity, improves fruit quality, and reduces the amount of chemical fertiliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66C09K11/78C09K11/71C09K11/83
CPCC09K11/665C09K11/7784C09K11/71C09K11/7795
Inventor 李凤娟曾庆云魏玉峰李尊智
Owner 兴城熙凤科技实业有限责任公司
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