Method for manufacturing agricultural film coated by high performance polyolefin

Abstract

The invention relates to an agricultural greenhouse and a greenhouse cover material, and concretely relates to a preparation method of high performance polyolefin by using a coating technology and a nano modification technology. The high performance polyolefin coating agricultural film takes high performance polyolefin as a matrix, a functional master batch is added to prepare a base material film, and the agricultural film can be prepared by preciously coating through a coating liquid; the high performance polyolefin coating agricultural film is prepared by processes of preparing the functional master batch, preparing a base material thin film, performing corona treatment, winding the base material film, coating one surface by the coating liquid, drying the coating liquid, cooling and winding, on-line roll change, coating on the other surface by the coating liquid. The flow-dripping period and the service life can reach more than three years, and the agricultural film has the advantages of good heat insulating ability, pesticide resistance property and dirt resistance property.

Description

technical field [0001] The invention relates to a covering material for agricultural greenhouses and greenhouses, in particular to a preparation method for preparing a high-performance polyolefin (High Polyolefin) coated agricultural film through a coating process and nano-modification technology. Background technique [0002] my country is a large agricultural production country, and agricultural film is an important means of production in my country's modern agriculture, especially functional agricultural film has played an important role in increasing agricultural production and income. my country's functional film coverage area has reached 30 million mu, ranking first in the world. However, compared with advanced countries, there is still a significant gap in the level of agricultural film in my country. , quality, function, application fields and other aspects can not meet the needs of modern agricultural cultivation technology. With the improvement of raw materials, ad...

AI Technical Summary

Problems solved by technology

The preparation of traditional functional films mostly uses ordinary talcum powder, diatomaceous earth, kaolin, and nano-silica as thermal insulation additives, which have a great influence on the transparency of the product. While blocking far-infrared light, it also blocks visible light and invisible light. Poor temperature effect

The service life of agricultural film is shortened in the environment of high sulfur and chlorine content caused by the use of pesticides

The anti-fogging function mainly adopts the method of adding dripping agent internally. Due to the addition of dripping agent, the internal addition method causes the mechanical properties of the shed film to decline and interferes with the stability of the anti-aging additive system, and the dripping agent is continuously released from the membrane molecules. Migrate to the surface and take away with the water flow, the dripping period is short, generally 3-6 months, in addition, a considerable amount of dripping agent will also be precipitated on the outer surface of the film, thus affecting the transparency and dustproof performance of the shed film produce obvious adverse effects

There is also a dripping anti-fog film with grouting method. The dripping and anti-fog function of this film can last for 5-7 months. However, the inner layer of the goods that farmers get is wet when they are sold.