Starch master batch and preparation method thereof

Abstract

The invention relates to the field of biodegradable materials, and discloses a starch master batch and a preparation method thereof. Based on the total weight of the starch master batch, the starch master batch contains 30-70 wt% of starch, 5-20 wt% of a plasticizer, 8-35 wt% of a carrier, 2-15 wt% of a compatilizer, 1-5 wt% of a lubricant and 0.1-1 wt% of an auxiliary agent. According to the starch master batch provided by the invention, by optimizing the components and the proportions thereof, the addition amount of the starch in a starch-based plastic product can be further increased, costis saved, the excellent plastic performance of the prepared product is ensured, and the environmental protection performance of the product is further improved.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a starch masterbatch and a preparation method thereof. Background technique [0002] With the rapid development of China's economy and e-commerce, the demand and usage of express packaging bags have increased dramatically. Existing express packaging bags are mainly used in the express industry to transport documents, goods, etc., but this kind of disposable packaging is mostly plastic packaging bags made of polyethylene and other materials, which have the advantages of low cost, convenient use, and good waterproof performance. features. [0003] While express packaging bags bring great convenience to people's lives, with the increase in usage, the waste of such disposable packaging bags increases sharply. However, because polyethylene is not easy to decompose and recycle, its waste Things become harmful garbage, pollute the environment, a large number of discarded plastic...

AI Technical Summary

Problems solved by technology

The easy-degradable environmentally friendly plastics produced by it have excellent easy-degradable environmental protection properties and can be widely used in many industries; at the same time, the existing starch-based plastics, especially for the preparation of various plastic bag products, due to production costs, In consideration of timeliness and processing convenience, starch or starch masterbatch is usually used directly, and the above-mentioned starch masterbatch is produced by the manufacturer on a large scale, but if it is made into a plastic bag, the addition of starch masterbatch in the existing process The amount generally cannot exceed 45% (the amount of starch added cannot exceed 25%), otherwise the performance of the plastic produced will be seriously attenuated

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