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Photochromic agricultural greenhouse film and preparation method

An agricultural greenhouse and photochromic technology, applied in botany equipment and methods, applications, agriculture, etc., can solve the problem that the temperature is difficult to meet the ideal color change requirements, and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2020-01-14
TIANJIN UVOS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to enhance the light utilization effect of plants, there are some films that rely on temperature to change color and improve the light transmittance in the photosynthetic band in the existing technology. However, due to the limitations of seasonal factors and geographical factors, it is difficult to achieve the ideal color change requirement only by temperature.

Method used

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  • Photochromic agricultural greenhouse film and preparation method
  • Photochromic agricultural greenhouse film and preparation method
  • Photochromic agricultural greenhouse film and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: A photochromic agricultural greenhouse film

[0021] Its preparation method is:

[0022] Weigh 100 parts of PVC raw material, 5 parts of plasticizer, 1 part of oil, and 1 part of photochromic compound OP powder. The models of OP powder are OP-099 (rose red), OP-057 (violet), OP-022 (narcissus yellow), and the specific ratio is: 0.3 parts for OP-099, 0.3 parts for OP-057, and 0.3 parts for OP-022 0.4 parts. 2 parts of amine inhibitor 292, mixed evenly, put into the laminator to melt, mixed evenly to form a film, and then put in. After pressing three times, the film is pulled out, the thickness of the film is controlled to be 0.1S-15S (10 μm-150 μm), and the required photochromic film is produced after cooling. The melting temperature of the film is about 170 degrees to 200 degrees. Generally, the melting temperature of EVA film does not exceed 250 degrees. Some photochromic compounds can be filmed at over 250 degrees. The color changing effect is light r...

Embodiment 2

[0023] Example 2: A photochromic agricultural greenhouse film

[0024] Weigh 100 parts of EVA raw material, 8 parts of plasticizer, 3 parts of oil, and 2.5 parts of photochromic compound OP powder. The models of OP powder are OP-099 (rose red), OP-057 (violet), OP-022 (narcissus yellow), and the specific ratio is: 0.2 parts for OP-099, 0.6 parts for OP-057, and 0.6 parts for OP-022 0.2 parts. 3 parts of amine inhibitor 765, mixed evenly, added to the melting machine and calender, pressed three times, and then pulled out the film. The thickness of the control film is 0.1S-15S (10 μm-150 μm), and the required photochromic film is produced after cooling. The melting temperature of the film is about 170 degrees to 200 degrees. Generally, the melting temperature of EVA film does not exceed 250 degrees. Some photochromic compounds can be filmed at over 250 degrees. The discoloration is darker than that of Example 1, which is rose red.

Embodiment 3

[0025] Example 3: A photochromic agricultural greenhouse film

[0026] Weigh 100 parts of PP raw material, 10 parts of plasticizer, 4 parts of oil, and 3.8 parts of photochromic compound OP powder. The models of OP powder are OP-099 (rose red), OP-057 (violet), OP-022 (narcissus yellow), and the specific ratio is: 0.4 parts for OP-099, 0.3 parts for OP-057, and 0.3 parts for OP-022 0.3 parts. 4 parts of hindered amine agent 770, mixed evenly, added to the laminator to melt, mixed evenly, added to the laminator to melt, mixed evenly to form a film, and then put in. After pressing three times, the film is pulled out, the thickness of the film is controlled to be 0.1S-15S (10 μm-150 μm), and the required photochromic film is produced after cooling. The melting temperature of the film is about 170 degrees to 200 degrees. Generally, the melting temperature of EVA film does not exceed 250 degrees. Some photochromic compounds can be filmed at over 250 degrees. The discoloration ...

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Abstract

The invention discloses a photochromic agricultural greenhouse film and a preparation method, and mainly relates to the technical field of agricultural films. The raw materials of the greenhouse filmcomprise in parts by weight: 100 parts of a resin matrix; 5-10 parts of a plasticizer; 1-4 parts of oil; and 1-4 parts of an OP powder. The preparation method comprises the following steps: repeatedlymelting the raw materials at 170 DEG C-200 DEG C, performing calendering to prepare a film until a thickness of the obtained film is 10 [mu]m-150 [mu]m, and performing cooling to obtain the greenhouse film. The beneficial effects are as follows: the light quality and temperature transmitted by a plastic greenhouse are improved, and a comprehensive utilization rate of light energy is increased, sothat growth of crops is facilitated, and early maturity and yield increase of the crops are promoted.

Description

technical field [0001] The invention relates to the technical field of agricultural films, in particular to a photochromic agricultural greenhouse film and a preparation method thereof. Background technique [0002] In agricultural greenhouse technology, film covering is an important means to improve crop yield and quality, and has become one of the technologies that modern agriculture relies on. The relationship between plant growth and solar spectrum shows that in the solar spectrum, the ultraviolet light of 280-380nm, the green-yellow light of 500-600nm and the near-infrared light above 720nm have a low plant utilization rate, and the blue-violet light of 430-480nm and the red light of 630-690nm have a low utilization rate. Helps enhance photosynthesis. In order to enhance the light utilization effect of plants, there are some films in the existing technology that rely on temperature to change color and improve the light transmittance in the photosynthetic band. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/08C08L23/12C08L91/00C08J5/18A01G9/14
CPCA01G9/1438C08J5/18C08J2323/08C08J2323/12C08J2327/06C08J2491/00Y02A40/25
Inventor 汪丰孟继本刘宗张丽鑫席志强孟祥美
Owner TIANJIN UVOS TECH CO LTD
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