High-water repellency high-photopermeability biodegradable cotton agricultural thin film

Abstract

The invention relates to the technical field of a degradable agricultural film product and the perpetration of the degradable agricultural film product, and in particular relates to a high-water repellency high-photopermeability biodegradable cotton agricultural mulching film and a preparation method thereof. The main raw materials of the film mainly comprise waste cotton fibers, such as embossed cotton lower pile, cotton noils, waste cotton clothes and the like. The perpetration method comprises the following steps of: adding dispersing agent, softening agent, wet strength agent and the like with proper quantity, preparing semi-finished products by a wet-process papermaking technology, soaking by liquid paraffin, carrying out PVA (polyvinyl alcohol) gluing, tidying rolling liquid by a two-soaking and two-rolling technology, baking, and drying at room temperature to obtain a finished product. The thin film prepared by the technology is quick in biodegradability, high in water repellency and high in photopermeability, the light transmittance of the thin film is more than 68%, and the seedling growth of most of crops and vegetables can be met, so that the film is an ideal material for partially replacing the common plastic thin film and preventing and curing 'the white pollution'.

Description

technical field [0001] The invention relates to the technical field of degradable agricultural film products and its preparation, in particular to a biodegradable cotton agricultural film with high water repellency and high light transmittance and a preparation method thereof. Background technique [0002] The wide application of plastic agricultural film plays a very important role in improving the yield and quality of crops, solving the problem of early seedling raising and planting in alpine areas, and planting anti-seasonal vegetables, melons and fruits. Residual film must be recycled. The reality is that the recycling work is seriously lagging behind, which has caused shocking "white pollution" to the ecological environment, and the decline in soil compaction has become a common phenomenon. In addition, the extensive use of plastic agricultural film has increased the consumption of limited and non-renewable petroleum resources. Therefore, in the past 30 years, research...

AI Technical Summary

Problems solved by technology

Among them, the main raw materials used in starch-added biodegradable mulch and photodegradable mulch are still plastics and chemical fibers, which cannot completely eradicate the problem of "white pollution"; plant fiber mulch is mainly paper mulch. Type hemp mulch is represented by a series of paper mulch developed by Japan and other countries using plant fibers such as coniferous wood, broad-leaved wood, hemp, and reed. Paper mulch has poor wind and rain resistance and is easily broken, so it is not suitable for mechanical laying. Membrane and other issues

The degradable liquid mulch film uses lignite, weathered coal or peat to modify waste liquids such as papermaking black liquor, and forms polymers through lignin, cellulose and polysaccharides under the action of cross-linking agents, and then mixes them with various additives, silicon fertilizers, It is obtained by mixing trace elements, pesticides and herbicides, and the effect of heat preservation and moisture conservation of this kind of mulch film is poor

[0003] According to statistics, my country produces more than 500,000 tons of waste natural fibers such as cotton and hemp every year, and it is increasing year by year. These wastes not only endanger the environment, but also cause a great waste of resources.

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