Preparation method of oxidized biodegradable mulching film

Abstract

The invention belongs to the technical field of degradable plastics, and specifically relates to a preparation method of an oxidized biodegradable mulching film. The oxidized biodegradable mulching film is prepared from a resin additive and a degradable master batch, wherein the raw material components in mass percent are as follows: 98-99.8% of the resin additive and 0.2-2.0% of the degradable master batch. According to the preparation method of the oxidized biodegradable mulching film, the preparation process is simple without the need of changing the production equipment and process; the mulching film can be recovered without generating waste; no toxic substance is generated in the processes of production, storage, use and degradation; the inherent properties of the products are unaffected; the productivity is increased especially for film and sheet products; the thickness of the film can be appropriately reduced under the condition of the same mechanics properties; the raw materials adopt general materials and natural modifiers; the energy source investment is the lowest compared with compatible products or directly biodegradable products, because the energy consumption of other products is as high as 3 times of the oxidized biodegradable mulching film; less polymers are used and natural resources are guaranteed; waste is reduced; and supplement nutrition is benefited in composting without influencing the value of available humus soil.

Description

technical field [0001] The invention belongs to the technical field of degradable plastics, and in particular relates to a preparation method of oxidative biodegradable plastic film. Background technique [0002] Mulch film is the ground covering film, usually transparent or black PE film, and there are also green and silver films, which are used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from invading crops and diseases caused by certain microorganisms, etc. , the function of promoting plant growth, but the degradation effect of the existing mulch film is poor, and it is easy to cause soil pollution. [0003] Plastic film mulching cultivation can effectively increase crop yield and benefit, especially in arid, semi-arid and high latitude areas, plastic film mulching creates a suitable growth environment for crops and greatly increases crop yield. According to statistics, there are more than 50 kinds of m...

AI Technical Summary

Problems solved by technology

Because ordinary plastic film is difficult to recycle after use, the residual plastic film pollutes the soil and the environment, resulting in reduced crop production