Enhanced full-biodegradable material as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of degradable materials, and particularly relates to an enhanced full-biodegradable material. The degradable material provided by the invention adopts a double-layer film structure and comprises a first layer film and a second layer film, and the degradation time of the first layer film is longer than that of the second layer film; the first-layer film is prepared from the following raw material components: high-density polyethylene, low-density polyethylene, linear low-density polyethylene, nano silicon dioxide, polyglycolic acid, n-octyl ferrocene, yttrium nitrate, dysprosium nitrate, iron dimethyl dithiocarbamate, boric acid, turf powder and sodium alginate; the second-layer film is prepared from the following raw material components: poly (butylene succinate) / butylene adipate, polylactic acid, high-density polyethylene, nano silicon dioxide, polyglycolic acid, dysprosium nitrate, boric acid, turf powder and sodium alginate. The enhanced full-biodegradable material provided by the invention not only has excellent mechanical properties, but also is easy to degrade, and can regulate the temperature and preserve soil moisture, prevent insects and weed and improve the emergence rate of crops when being used as a mulching film.

Description

[0001] This application is a divisional application with an application date of March 15, 2017, an application number of 201710153554.9, and the title of the invention "Enhanced fully biodegradable material and its preparation method". technical field [0002] The invention belongs to the technical field of degradable materials, and in particular relates to an enhanced fully biodegradable material and a preparation method and application thereof. Background technique [0003] Plastic film mulching is one of the key technical measures for dry farming and water-saving agriculture and increasing the growth period of crops. Agricultural mulch is not only used in vegetable cultivation, but also widely used in the production of field crops, fruit trees, forestry, flowers and commercial crops; not only in open field cultivation, but also in early spring protection facilities. The application of plastic film mulching technology has greatly promoted the improvement of agricultural ou...

AI Technical Summary

Problems solved by technology

At the same time, the damage to the growth of crops is aggravated, mainly in the fact that the growth of the roots of the crops may be blocked, reducing the ability of the crops to obtain water and nutrients, resulting in a decrease in yield

[0004] Nowadays, plastic film pollution has become one of the serious rural ecological problems. Many farmers just use a rake to clean up the ground before digging. The residual film all over the ground is quickly covered by the newly laid plastic film. Burning, or simply discarding the fields; in many places, residual film has blocked ditches, affecting farmland drainage and irrigation; some residual film is even mixed with straw and pasture, poisoning cattle and sheep that eat by mistake

These residual films may also continue to pollute groundwater and soil. If things go on like this, they will inevitably pose a serious threat to the sustainable development of agriculture.

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