Heat-resistant full-biodegradable straw and preparation method thereof

Abstract

The invention belongs to the technical field of high polymer material processing, and particularly relates to a heat-resistant full-biodegradable straw which comprises the following components in parts by mass: 100 parts of full-biodegradable resin, 3-5 parts of a nucleating agent, 2-4 parts of a chain extender, 20-35 parts of an inorganic filler, 1-2 parts of a lubricant, 1-2 parts of a compatibilizer and 20-30 parts of a biomass filler. The preparation method comprises the following steps of: firstly, putting the inorganic filler, the biomass filler, the lubricant and the compatibilizer into high-temperature mixing equipment, stirring at a high speed for modification, then adding the full-biodegradable resin, the chain extender and the nucleating agent, uniformly mixing, then putting the raw materials into an internal mixer for internal mixing, putting the internally mixed blend into a double-screw extruder, extruding and granulating, then adding the obtained material into a suction tube extruder, extruding the material into a tube shape, then stretching the tube into post-processing equipment, enabling the tube to quickly pass through the equipment for secondary crystallization, and finally cutting the tube into a preset length. The heat resistance of the full-biodegradable straw can be remarkably improved, so that the full-biodegradable straw can be applied to more use scenes, the product value is improved, the processing efficiency is high, and better economic benefits are obtained.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing, and in particular relates to a heat-resistant fully biodegradable straw and a preparation method thereof. Background technique [0002] The amount of discarded plastics in my country ranks first in the world. These discarded plastics not only pollute the environment and endanger health, but also occupy valuable land resources. Alternatives to degradable plastics are on the way. In the field of disposable straws, due to the low amount of plastic monomers, it is easy to pollute and difficult to separate efficiently, which makes degradable plastics more likely to become a substitute for traditional plastics in this field. [0003] At present, the fully degradable straw products on the market are mixed, and most of them do not meet the use standards. Due to poor performance, especially due to poor heat resistance, they cannot be used for hot drinks, which greatly limits the scope...

AI Technical Summary

Problems solved by technology

[0003] At present, the fully degradable straw products on the market are mixed, and most of them do not meet the use standards. Due to poor performance, especially due to poor heat resistance, they cannot be used for hot drinks, which greatly limits the scope of use.

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