Amylum category complete biodegradable material and preparation method thereof

A technology for biodegradable materials and starch, which is applied in the field of completely biodegradable starch materials and their preparation, can solve the problems that the comprehensive performance needs to be further improved, the dispersing effect and plasticizing effect of starch fillers are not ideal, and the like, and complete biodegradation is achieved. performance, excellent blow molding processability, and the effect of excellent mechanical properties
CN102492267AInactive Publication Date: 2012-06-13KINGFA SCI & TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KINGFA SCI & TECH CO LTD
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an amylum category complete biodegradable material and a preparation method thereof. The amylum category complete biodegradable material comprises, by weight, the long-chain branch aliphatic polyester or long-chain branch aliphatic series- aromatic copolyesters 50-70%, the starch 20-30%, the chain extender 0.1-3% and the balance chain extender 9-17%. The preparation method comprises the steps of enabling all components to be mixed in a high speed mixer, feeding in a twin-screw extruder after accurate measurement by means of a measurement scale, and extruding and prilling by adjusting a built-up sequence of a screw and designing different exhaust ports. The amylum category complete biodegradable material and the preparation method of the amylum category complete biodegradable material solve the problems of dispersing, plasticizing and exhausting of starch filler in the twin-screw extruder, and obtained amylum complete biodegradation material not only has complete biodegradation performance, but also has excellent mechanical property and good extrusion molding working quality.
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Description

technical field

[0001] The invention relates to a starch-based complete biodegradable material under composting conditions and a preparation method thereof. Background technique

[0002] In recent years, the development of biodegradable plastics has been increasing day by day, and their applications have continued to expand. They have gradually replaced traditional plastics in the fields of packaging materials, disposable tableware, agricultural mulch and daily products. At present, in terms of performance and price, compared with traditional plastics, the performance of biodegradable plastics is too single, and the price is too expensive, which greatly limits the further development of biodegradable plastics.

[0003] Among biodegradable polymer plastics, starch, polylactic acid PLA, polycaprolactone PCL, poly β-hydroxyalkanoate PHA, etc. are currently used more. Polylactic acid is obtained through starch fermentation and monomer polymerization. , is a type of aliphatic po...

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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