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Weather resistant light-converting luminous farm film and its making process

An agricultural thin film and weather resistance technology, applied in chemical instruments and methods, luminescent materials, plant protection covers, etc., can solve the problems of narrow light conversion spectrum, low light conversion efficiency, and high production cost of rare earth organic coordination compounds

Inactive Publication Date: 2007-01-03
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the current high-efficiency plastic agricultural films have the following disadvantages: poor photostability of organic fluorescent light-converting materials, high production costs of rare earth organic Disadvantages such as low light efficiency and narrow light conversion spectrum

Method used

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  • Weather resistant light-converting luminous farm film and its making process
  • Weather resistant light-converting luminous farm film and its making process
  • Weather resistant light-converting luminous farm film and its making process

Examples

Experimental program
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preparation example Construction

[0089] The present invention also provides the preparation method of described thin film, and it comprises steps:

[0090] (a) 0.01-2 parts by weight (preferably 0.05-1.5 parts by weight) of visible light excited long-lasting light-changing agent A, 0.01-1 part by weight (preferably 0.05-0.5 parts by weight) of red light-changing agent B, 0.01-1 weight part (preferably 0.05-0.5 weight part) of blue light conversion agent C and 0.1-2 weight part (preferably 0.02-1.5 weight part) of anti-aging agent D are mixed together to form a mixture ;

[0091] (b) mixing the mixture in step (a) with 80-100 parts by weight of matrix resin, and making a film.

[0092] In a preferred example, the manufacturing method includes the steps of: first, take visible light excited long-lasting light-changing agent A accounting for 0.01-2% by weight of the matrix resin, taking light-changing agent B accounting for 0.01-1% by weight of the matrix resin, and taking 0.01-1% of the weight of the matrix re...

Embodiment 1

[0103] Preparation of agricultural film No.1

[0104] Weigh raw materials according to the table:

[0105] Table 1

[0106]

[0107] Disperse the above components in 20 parts of acetone, mix them evenly and dry them, then add 100 parts of LDPE (low density polyethylene), after high-speed stirring, use a twin-screw extruder to granulate to obtain fluorescent additives and anti-aging agent masterbatches . Mix the obtained masterbatch with 450 parts of LDPE, mix evenly, and then use an extrusion blown film machine to blow mold it into a film with an average thickness of 0.12 mm, which is called Agricultural Film No.1.

Embodiment 2-5

[0109] Preparation of agricultural film No.2-5

[0110] The method described in Example 1 was repeated, except that the ingredients and contents (parts by weight) shown in Table 2 were used.

[0111] Example 1

[0112] As a result, agricultural films No.2-No.5 with an average thickness ranging from 0.10-0.15mm were produced

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Abstract

The present invention belongs to the field of one kind of weather resistant light-converting luminous farm film and its making process. The farm film contains base resin and following added components: at least one kind of visible light excited long afterglow light-converting agent, at least one kind of red light-converting agent, at least one kind of blue light-converting agent, and one compatible antiaging agent. The farm film has the light-converting and luminous characteristics, can luminesce at night stably for long time, so that plant can utilize sunlight effectively for increasing yield, fast maturing and reducing diseases and pests.

Description

technical field [0001] The invention relates to the field of agricultural materials, in particular to an agricultural plastic film with light conversion and nighttime luminous properties and a manufacturing method thereof. Background technique [0002] Agricultural plastic films are roughly divided into three categories according to their functions and development: (1) ordinary plastic agricultural films; (2) functional plastic agricultural films (including anti-aging, anti-fog, heat preservation, dust-proof, etc.); (3) control Functional plastic agricultural film (including spectral selection, spectral conversion, functional control, etc.). With the improvement of crop cultivation technology, ordinary agricultural plastic films are no longer suitable for the development of agricultural protective cultivation. In recent years, based on the principles of photoecology, the application of solar light energy conversion technology to agricultural films has been very active in th...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08K3/22C08K5/3492A01G13/02C09K11/06
Inventor 彭子飞江炜
Owner SHANGHAI NORMAL UNIVERSITY
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