Bagasse polypropylene bioplastics and preparation method thereof

Abstract

The invention relates to the field of bioplastics, and provides bagasse polypropylene bioplastics and a preparation method thereof. The bioplastics are obtained by mixing and processing bagasse, polypropylene, an inorganic nanometer reinforcing agent, a coupling agent, a plasticizer, a heat stabilizer, a lubricant, a dispersant, and the like, and the bioplastics comprise 20-40% of bagasse, 20-40% of polypropylene, and 10-30% of inorganic nanometer reinforcing agents; the preparation of the bioplastics comprises the steps of bagasse pretreatment, stepwise mixing and combination of the materials, and plastic particle preparation; the bioplastics of the invention have low manufacturing cost, high physical and mechanical strength, good surface finish, water resistance and chemical corrosion resistance, are green, environment-friendly, and new products, and are applicable to injection molding for the preparation of high-performance products for daily use.

Description

technical field [0001] The invention relates to the field of bio-based plastics, in particular to a formula and method for preparing bio-based plastics using bagasse as a main raw material. Background technique [0002] At present, China's disposable daily-use plastic product waste is as high as 1 million tons per year, mainly disposable tableware, food packaging bags, etc. The increasing plastic products have brought serious impact on the environment. In order to solve this problem, bio-based Plastic products are developed and brought to market in varying degrees. Because disposable daily-use plastic products, especially tableware and food packaging bags, are mainly used for packaging food, they must be harmless to the human body. Therefore, such products are generally produced using polylactic acid bio-based plastics or starch-based bio-based plastics. It is safe and non-toxic, but there are still some disadvantages. The disadvantages of polylactic acid bio-based plastic ...

AI Technical Summary

Problems solved by technology

Because disposable daily-use plastic products, especially tableware and food packaging bags, are mainly used for packaging food, they must be harmless to the human body. Therefore, such products are generally produced using polylactic acid bio-based plastics or starch-based bio-based plastics. It is safe and non-toxic, but there are still some disadvantages. The disadvantages of polylactic acid bio-based plastic products are: 1. Poor heat resistance, easy to deform or bond; 2. Easy to break

The disadvantages of starch-based bio-based plastic products are: 1. Poor waterproof and oil-proof performance; 2. Easy to be corroded by microorganisms and difficult to store

At present, this type of bio-based plastics is mainly used in the construction industry to manufacture special-shaped panels, decorative panels or furniture panels, such as the patent "a manufacturing formula for polypropylene-based wood-plastic composite materials" (application number: 200610035580), the patent The process of preparing active plasticized pellets for wood-plastic composite materials from straw" (application number: 200610040465) and the patent "a bagasse polypropylene composite material and its preparation method" (application number: 201010523433), the proposed bio-based Plastics are used to produce composite panels to replace plastic panels or wooden panels. This type of bio-based plastic has high mechanical strength, strong water resistance and chemical corrosion resistance, but it cannot meet the non-toxic requirements of daily packaging plastics and cannot be used as a daily packaging material. Raw materials for plastic products