Starch modified full-biobased PBSA biodegradable plastics and preparation method therefor

A biodegradable plastic and starch modification technology, applied in the field of biodegradable plastics, can solve the problems of high carbon dioxide, consumption of petroleum resources, etc., to reduce consumption, solve white pollution, and improve mechanical properties.
CN108948680AInactive Publication Date: 2018-12-07JINING MING SHENG NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINING MING SHENG NEW MATERIALS CO LTD
Publication Date
2018-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses starch modified full-biobased PBSA biodegradable plastics and a preparation method therefor. The preparation method comprises the steps: (1) providing full-biobased polybutylene succinate / adipate (PBSA); (2) subjecting the full-biobased PBSA and starch to vacuum drying separately; (3) adding the dried full-biobased PBSA, the dried starch, a chain extender, an antioxidant, aplasticizer, a lubricant and a thermal stabilizer into a high-speed mixer, and carrying out uniform mixing; (4) subjecting the obtained mixed material to extruded granulating by a twin-screw extruder; and (5) carrying out film blowing on the composite plastic granules at a certain temperature, thereby obtaining the starch modified full-biobased PBSA biodegradable plastics. According to the starchmodified full-biobased PBSA biodegradable plastics prepared by the method disclosed by the invention, after composite modification, the requirements on complete degradation are met, meanwhile, the mechanical properties of pure PBSA resin are enhanced, the production cost is reduced effectively, and thus, the marketing is better facilitated.
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Description

technical field

[0001] The invention relates to the technical field of biodegradable plastics, in particular to a starch-modified full bio-based PBSA biodegradable plastic and a preparation method thereof. Background technique

[0002] At present, with the continuous development of the national economy, the consumption of plastic products is increasing, and synthetic plastics are playing an increasingly important role in production and life. However, since most of the plastic products cannot be degraded after being discarded, they exist for a long time, and the continuous accumulation has caused serious white pollution. Environmentally friendly plastic products are becoming more and more urgent and have aroused extensive interest of researchers. Among them, degradable resins have become a research hotspot due to their degradation characteristics and economic characteristics.

[0003] Polybutylene teresuccinate / adipate (PBSA) is a completely biodegradable polyester material,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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