Plant fiber composite micro-foaming biodegradable hollow plates

Abstract

The invention discloses plant fiber composite micro-foaming biodegradable hollow plates which are composed of, by weight, 5-15% of natural plant fiber, 40-50% of starch and 35-55% of synthetic biological materials and prepared according to the following method. First, premixing the natural plant fiber and the starch, adding a processing agent in premixed materials, and preprocessing the mixture in a microwave device for 5-6 minutes; then, adding a plasticizing agent and the synthetic biological material, mixing at the temperature of 120-130 DEG C to obtain a modified plant fiber composite base material, and adding 0.5-0.8% of foaming agent in the modified plant fiber composite base material after cooling; and finally low-temperature high shearing, extruding, micro-foaming, sizing and cutting in a same-direction twin screw device to obtain the plant fiber composite micro-foaming biodegradable hollow plates. The raw materials are biodegradable materials, under the premise of guaranteeing use performance of products, wood resource is saved, use amount of plastics is reduced, cost is lowered, and purposes of low-carbon and environmental protection are achieved.

Description

technical field [0001] The invention relates to a hollow plate, in particular to a biodegradable hollow plate used for making box articles. Background technique [0002] At present, a large number of industrial products, fruits and vegetables and other people's production and daily necessities in the world are mostly packaged in cartons (including corrugated boxes) made of cardboard (sheets), which will cause tens of millions of trees around the world to be destroyed every year. felling. Deforestation will cause environmental degradation and reduction of species diversity, resulting in climate change and geographical environment change. Deforestation without adequate reforestation can lead to soil and water conservation damage, climate change, loss of species diversity and reduced quality of life. Since the middle of the 19th century, around 1852, the earth has experienced unprecedented deforestation, forests in Europe are being eroded by acid rain, and very large areas of...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of using cardboard (sheet) as packaging material in the above-mentioned prior art, a large number of trees will be consumed, causing soil erosion and ecological environment damage, and the use of polyolefin hollow board as packaging material will cause serious environmental pollution. The present invention provides a The hollow board made of plant fiber, starch and synthetic biological material through micro-foaming biodegradation process is used as packaging material instead of carton and plastic box. It not only has the characteristics of high strength, good toughness, easy coloring and easy molding process Moreover, it can save trees, reduce production costs, and can be naturally biodegraded, which is beneficial to environmental protection. The plant fiber composite micro-foam biodegradable hollow sheet