Preparation method of completely biodegradable plastic resin and film products thereof

Abstract

The invention relates to a preparation method of a completely biodegradable plastic resin and film products thereof. The preparation method is realized through the following steps: conducting surface treatment on starch with content controlled to be 90% by taking corn starch, sweet potato starch, tapioca, konjac starch, poly(butylene succinate) (PBS), various plastic additives and the like as raw materials, and blending the starch with biodegradable synthetic resin (PBS, PLA (polylactic acid)) for modification; and adopting film blowing, extrusion and other technologies to obtain corresponding products. The preparation method has the beneficial effects that on the premise of maintaining the product to be completely biodegradable, the tensile strength and elongation at break of the product can be improved, so that the product truly conforms to the market demand.

Description

technical field

[0001] The invention relates to a method for degradable plastics, in particular to a method for completely biodegradable plastic resins and film products thereof. Background technique

[0002] Since polymer materials were synthesized and put into use in the 1930s, plastics have been widely used in various sectors of the national economy and in various fields of people's lives due to their special qualities of light weight, durability, low price and high quality. However, the natural degradation time is long, which causes serious "white pollution". Incineration can recover energy, but the investment in equipment is large, and it is easy to produce toxic gases, which increases the greenhouse effect and forms secondary pollution; recycling can better solve plastics Garbage pollution problem, but this method has high operating cost, high technical difficulty, and difficult to guarantee product quality.

[0003] Degradable plastics are a type of plastics that can...