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A kind of anti-oxidation and light conversion agricultural plastic film and preparation method thereof

A plastic film and anti-oxidation technology, applied in chemical instruments and methods, botany equipment and methods, agriculture, etc., can solve the problems of reduced light transmission efficiency, short service life, fluorescence quenching, etc., and achieve simple and controllable preparation, Cost reduction and high controllability

Active Publication Date: 2020-05-15
盐城保荣机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For the organic dye light conversion agents currently used in light conversion films, they are prone to oxidative decomposition under long-term light, and their service life is short; the light conversion agents of inorganic salts have poor photostability, light conversion decays quickly and transmits light with time. Efficiency is reduced; organometallic complex light conversion agents often appear fluorescence quenching phenomenon, the present invention proposes an anti-oxidation light conversion agricultural plastic film and its preparation method, thereby effectively solving the above problems, while ensuring the simple and controllable preparation , and effectively reduce the cost

Method used

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  • A kind of anti-oxidation and light conversion agricultural plastic film and preparation method thereof
  • A kind of anti-oxidation and light conversion agricultural plastic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing an anti-oxidation light-transforming agricultural plastic film, the preparation process is as follows:

[0032] (1) Disperse the light-changing agent 1,4-bis(o-cyano-styryl)benzene and polyethylene wax in a high-speed disperser at a mass ratio of 100:5, so that the polyethylene wax evenly coats the light-changing agent to improve The light-changing agent is ready for use; take 100 parts by weight of ethylene-vinyl acetate copolymer, add 300 parts by weight of absolute ethanol, stir and heat up to 50°C, then add 10 parts by weight of sodium hydroxide, continue to stir and heat up to 60°C, and react After 30 minutes, add 10 parts by weight of a modified light-changing agent; continue to react for 10 minutes, filter the reaction product, wash repeatedly with deionized water, and spray dry to obtain a powdered ethylene-vinyl alcohol copolymer-coated light-changing agent. agent colloid;

[0033] (2) Use two casting machines to cast the upper and lower...

Embodiment 2

[0042] A method for preparing an anti-oxidation light-transforming agricultural plastic film, the preparation process is as follows:

[0043] (1) Disperse the light-changing agent 6,7-pyranocoumarin and polyethylene wax in a high-speed disperser at a mass ratio of 100:8, so that the polyethylene wax evenly coats the light-changing agent to obtain a modified light-changing agent Standby: Take 100 parts by weight of ethylene-vinyl acetate copolymer, add 400 parts by weight of absolute ethanol, stir and heat up to 50°C, then add 15 parts by weight of sodium hydroxide, continue to stir and heat up to 60°C, after reacting for 45 minutes, add 15 parts by weight of the modified light-changing agent; continue to react for 15 minutes, filter the reaction product, repeatedly wash with deionized water, and spray dry to obtain powdery ethylene-vinyl alcohol copolymer-coated light-changing agent micelle;

[0044] (2) Use two casting machines to cast the upper and lower layers of polyethyle...

Embodiment 3

[0047] A method for preparing an anti-oxidation light-transforming agricultural plastic film, the preparation process is as follows:

[0048] (1) Disperse the light-changing agent 6,7-furanocoumarin and polyethylene wax in a high-speed disperser at a mass ratio of 100:5, so that the polyethylene wax evenly coats the light-changing agent to obtain a modified light-changing agent for use Take 100 parts by weight of ethylene-vinyl acetate copolymer, add 400 parts by weight of absolute ethanol, stir and heat up to 50°C, then add 15 parts by weight of sodium hydroxide, continue stirring and heat up to 60°C, after reacting for 45min, add 15 Modified light-changing agent in parts by weight; continue to react for 15 minutes, filter the reaction product, repeatedly wash with deionized water, and spray dry to obtain powdery ethylene-vinyl alcohol copolymer-coated light-changing agent micelle;

[0049] (2) Use two casting machines to cast the upper and lower layers of polyethylene film, ...

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Abstract

The invention provides an anti-oxidation light-conversion agricultural plastic film and a preparation method thereof. In the process of preparing an ethylene-vinyl alcohol copolymer, a light conversion agent is added, so that colloidal particles of the light conversion agent prepared by coating the light conversion agent with the ethylene-vinyl alcohol copolymer are obtained. The colloidal particles have excellent dispersity and a barrier property on oxygen and water, and the light conversion agent applied to plastic film can be effectively prevented from being oxidized or hydrolyzed by oxygenor water, so that the light conversion efficiency and the service life of the light conversion agent are greatly improved. Compared with a method of direct spraying, direct adding and adding master batches, the method provided by the invention has remarkable antioxidant advantages.

Description

technical field [0001] The invention relates to the field of agricultural film materials, in particular to improving the service life of a light conversion film, in particular to an anti-oxidation light conversion agricultural plastic film and a preparation method thereof. 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. At present, one of the main models of facility agriculture is various types of plastic shed greenhouses, which is also an important part of the four major projects of "seeds, biology, greenhouses, and green" that my country's agriculture is vigorously promoting. Although the annual output of agricultural film in my country ranks among the top in the world, compared with developed countries, there is a considerable g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G9/14B32B27/30B32B27/08B32B37/12C08L23/08C08K9/10C08K9/02C08K9/04C08K5/315C08K5/1545C08K5/3472C08K5/3475
CPCA01G9/1438B32B27/08B32B27/30B32B37/1207B32B2037/1238C08K5/1545C08K5/315C08K5/3472C08K5/3475C08K9/02C08K9/04C08K9/10C08L2201/14C08L2203/16C08L23/08Y02A40/25
Inventor 陈庆贯大为
Owner 盐城保荣机械有限公司
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