Bioldegradation plastic masterbatch and its preparation method

Abstract

A mother particle for bioderadation plastic is prepared from starch, resin, polymer, plasticizer with high boiling point, lubricant and oxidizing degradation promoter, through preparing modified superfine starch, mixing with others, and granulating.

Description

technical field [0001] The invention belongs to the series of biodegradable plastics that can be absorbed in nature, and in particular relates to a biodegradable plastic masterbatch used to produce biodegradable plastic products and a preparation method. technical background [0002] Due to the pollution and public hazards caused by plastic waste, people have long been looking for a biodegradable polymer to replace those non-degradable, petroleum-based plastic materials. There are generally two problems in various starch-based biodegradable plastics at present: one is that the particle size of starch is too large; the other is that there are hydrophilic groups such as hydroxyl groups on the surface of starch, which are incompatible with polymer resins. Therefore, people have done a lot of research on the above problems. For example, using pregelatinized starch, using ethylene / acrylic acid copolymer as a compatibilizer, and then modifying the starch by wet method has solved ...

AI Technical Summary

Problems solved by technology

There are generally two problems in the current various starch-based biodegradable plastics: one is that the particle size of the starch is too large; the other is that there are hydrophilic groups such as hydroxyl groups on the surface of the starch and are incompatible with polymer resins.

For example, using pregelatinized starch, using ethylene / acrylic acid copolymer as a compatibilizer, and then modifying the starch by wet method has solved certain above problems, but there are still starch particle sizes that are not small enough, Shortcomings such as weak production continuity, large energy consumption, large land occupation, large investment, and high cost have resulted in the slow development of biodegradable plastics under the influence of the market economy.