Recyclable high-strength biological packaging material

Abstract

The invention belongs to the technical field of polymer materials and relates to a recyclable high-strength biological packaging material which is used as a basic material for making various packaging products. The recyclable high-strength biological packaging material comprises the following components in part by mass: 50 to 70 parts of starch, 10 to 30 parts of polyethylene, 5 to 15 parts of plant fibers, and 1 to 5 parts of additive. The starch comprises natural starch or chemical-modified starch, such as dialdehyde starch which is oxidized starch obtained by oxidizing the starch by using periodic acid and salt; the plant fibers are made from rice husk, rice straw, wheat straw, corn stalks, cotton stalks, wood dust and bamboo dust and other crop straw or plant stems; and the additive is one or more of a foaming agent, a plasticizing agent, a stabilizer, a filler, a coupling agent and a moisture proof agent. The technical process of the method is simple, the principle of the method is safe and reliable, the raw materials are readily available, and the practical value of the method is high; and the prepared material has high strength, and can be recycled and degraded.

Description

Technical field: [0001] The invention belongs to the technical field of polymer materials, and relates to a biological packaging polymer material, in particular to a recycled high-strength biological packaging material, which is used as a basic material for preparing various packaging products. Background technique: [0002] At present, in people's daily life, packaging products, especially plastic packaging products, have brought a lot of convenience to people's lives. However, while these plastic packaging materials have brought us convenience and benefits, they have also brought us serious hazard. Most of the existing plastic packaging materials in use, such as plastic bags, polyethylene plastic foam, and food packaging bags, are disposable, but they take 1 to 20 years to decompose after they are discarded, and some even last Moreover, once these discarded plastic packaging materials enter nature, they will bring many potential hazards. If these wastes enter the soil, t...

AI Technical Summary

Problems solved by technology

However, for the study of biological packaging materials, there are two aspects that need to be paid attention to: one is that during the use of packaging materials, it is necessary to ensure that the performance of the packaging materials meets the requirements of use; Packaging materials must avoid degradation due to the external environment during the circulation process, and at the same time, there is an optimized environment to make them degrade quickly after use; at present, an environmentally friendly recyclable high-strength bio-packaging plastic is used to replace Traditional plastics, many biodegradable plastics have been developed at home and abroad, but the price of these bio-packaging materials is very high, about 3-10 times the price of ordinary plastics, which limits the scope of its use, especially for our country, must be From the comprehensive consideration of price and performance, we can manufacture biological packaging materials with excellent performance and low price