Enhanced type fully biodegradable material and preparation method thereof

Abstract

The invention relates to a degradable material. The degradable material is of a double-film layer structure, and comprises a first film layer and a second film layer, wherein the degrading time of the first film layer is longer than the degrading time of the second film layer; the first film layer is prepared from the following raw materials and components of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, nanometer silicon dioxide, polyglycolic acid, n-octyl ferrocene, yttrium nitrate, dysprosium nitrate, iron dimethyl dithio carbamate, boric acid, turf powder and sodium alginate; the second film layer is prepared from the following raw materials and components of poly(butylene succinate-co-butylene adipate), polylactic acid, high-density polyethylene, nanometer silicon dioxide, polyglycolic acid, dysprosium nitrate, boric acid, turf powder and sodium alginate. The enhanced type fully biodegradable material has the advantages that the tensile strength, elongation rate at break and other mechanical properties are excellent; the degrading is easy, and the excellent effects of temperature regulating and moisten retention, insect preventing and weeding, and seedling rate increasing are realized when the degradable material is used as a ground film.

Description

technical field [0001] The invention relates to the technical field of degradable materials, in particular to an enhanced fully biodegradable material and a preparation method thereof. Background technique [0002] Plastic film mulching is one of the key technical measures for dry farming, water-saving agriculture and increasing the growth period of crops. Agricultural plastic film is not only used in vegetable cultivation, but also in the production of field crops, fruit trees, forestry, flowers and economic crops; not only for open field cultivation, but also for covering in early spring protection facilities. The application of plastic film mulching technology has greatly promoted the improvement of agricultural output and efficiency, and has played an important role in driving the transformation of agricultural production methods and promoting a leap in agricultural productivity. However, ordinary mulch is blown from petrochemical products such as polyethylene as the ma...

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

[0003] 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 and affected farmland irrigation and drainage; 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.

Images