Durable anchoring method for anti-fogging agenjt of coating film for environment controlling greenhouse

An anti-fogging agent and covering film technology, applied in the field of polymer functional material preparation, can solve problems such as compatibility, affecting the migration speed of anti-fogging agent, and anti-fogging agent loss, etc. Rapid droplet effect and improved mechanical properties

Inactive Publication Date: 2004-02-04
BEIJING INSTITUTE OF TECHNOLOGYGY +2
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Problems solved by technology

The anti-fogging treatment of environmental control greenhouse covering materials, whether it is external coating method or internal addition method, although the fog drop phenomenon of the covering material is temporarily solved, there is inevitably the loss of anti-fog droplet agent, that is, the anti-fog droplet effect There is a timeliness, which depends on the compatibility of the anti-fogging agent with the polymer substrate, which affects the speed at which the anti-fogging agent migrates to the surface of the film
At present, the anti-fogging film produced in China still has this problem, and there is no effective way to solve it for the time being.

Method used

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Examples

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Embodiment Construction

[0025] The present invention is described in detail below by the examples, it is necessary to point out that the following examples are only suitable for further description of the present invention, and can not be interpreted as limiting the protection scope of the present invention, those skilled in the art can according to the above-mentioned content of the present invention Some non-essential improvements and adjustments are made to the present invention.

[0026] (1) 30 grams of polyoxyethylene compound and organic amine mixture, 40 grams of superfine calcium carbonate with a certain length of polar segment grafted on the surface, and a large number of active groups at the end, are added to a high-speed mixer for high-speed Mixing, the temperature is 120°C, and the mixing time is 20 minutes, so that the active groups grafted on the surface of calcium carbonate and the anti-fogging and dripping agent have a physical and chemical interaction, and a mixture with anchoring eff...

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Abstract

A process for durably combining the antifog agent which the film used for hothouse includes such steps as high-speed mixing of antifog agent and anchoring agent while heating, pugging the mixture, auxiliary materials and carrier in banburying machine to obtain mother particles, mixing them with basic resin, and blow moulding. The resultant film has quick, stable and durable antiforg effect.

Description

technical field [0001] The present invention is an improvement to cover films for environmental control greenhouses. In particular, it relates to the long-acting anchoring technology of anti-fogging and dripping agents, and belongs to the technical field of polymer functional material preparation. Background technique [0002] Due to the large difference in temperature and humidity between the inside and outside of the environmental control greenhouse, water vapor is easy to form fog droplets on the surface of the film, which forms diffuse reflection under sunlight, which greatly reduces the light passing through the film, which seriously hinders the photosynthesis of plants and delays the growth of crops. growth and reduce crop yields. Therefore, the research on the anti-fogging problem of agricultural film has particularly important economic significance and practical value. The anti-fogging treatment of environmental control greenhouse covering materials, whether it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/22B29B7/00B29C49/00C08J5/18
CPCY02A40/25
Inventor 谭惠民吴彤郜华萍柴本桐刘东辉李星张大伦张木棍
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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