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Full-biodegradable material and preparation method thereof

A degradable material, whole biological technology, applied in the field of polymer compound composition, can solve the problems of low market recognition, performance gap, high price, etc., achieve good environmental benefits and social value, reduce costs, and low prices. Effect

Inactive Publication Date: 2012-11-28
ECOTA ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the real degradable materials such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), polybutylene succinate (PBS), etc., are very expensive and have better performance than traditional plastics (such as PP). and PE) have a certain gap, resulting in its low market recognition in recent years

Method used

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  • Full-biodegradable material and preparation method thereof
  • Full-biodegradable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, take the following raw materials by weight: 30 parts by weight of maleic anhydride grafted starch, 10 parts by weight of soybean oil, 35 parts by weight of polylactic acid, the copolymerization of butylene adipate and butylene terephthalate 10 parts by weight of the compound, 15 parts by weight of ethylene-vinyl acetate copolymer (EVA).

[0024] Then, the fully biodegradable material is prepared according to the following steps: mix all the above-mentioned raw materials uniformly to obtain a mixed material; then add the mixed material to a twin-screw extruder for melt blending (the mixed material passes through the temperature respectively at 130°C and 140°C , 150°C, 160°C, 170°C, 180°C, 170°C, 160°C for each melt blending interval) to form a material melt; the material melt is extruded from the die of the twin-screw extruder and then drawn, Cut into pellets to obtain material granules; after the material granules are dried, fully biodegradable materials are obta...

Embodiment 2

[0027] First, take the following raw materials by weight: 40 parts by weight of maleic anhydride grafted starch, 10 parts by weight of soybean oil, 25 parts by weight of polylactic acid, the copolymerization of butylene adipate and butylene terephthalate 10 parts by weight of the compound, 15 parts by weight of ethylene-vinyl acetate copolymer (EVA).

[0028] Then, the fully biodegradable material is prepared according to the following steps: mix all the above-mentioned raw materials uniformly to obtain a mixed material; then add the mixed material to a twin-screw extruder for melt blending (the mixed material passes through the temperature successively at 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 170°C, 160°C (melting and blending intervals) to form a material melt; the material melt is extruded from the die of the twin-screw extruder for drawing, cutting granules to obtain material granules; after material granules are dried, fully biodegradable materials are obtained. The ...

Embodiment 3

[0031] First, weigh the following raw materials by weight: 50 parts by weight of cornstarch, 8 parts by weight of palm oil, 2 parts by weight of linseed oil, 20 parts by weight of polylactic acid, butylene adipate and butylene terephthalate 12 parts by weight of the copolymer, 8 parts by weight of ethylene-vinyl acetate copolymer.

[0032] Then, the fully biodegradable material is prepared according to the following steps: mix all the above-mentioned raw materials uniformly to obtain a mixed material; then add the mixed material to a twin-screw extruder for melt blending (the mixed material passes through the temperature respectively at 130 ° C and 140 ° C , 150°C, 160°C, 170°C, 180°C, 170°C, 160°C for each melt blending interval) to form a material melt; the material melt is extruded from the die of the twin-screw extruder and then drawn, Cut into pellets to obtain material granules; after the material granules are dried, fully biodegradable materials are obtained. The twin-...

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Abstract

The invention relates to a full-biodegradable material which is characterized by comprising the following raw materials in percentage by weight: 30-65% of starch, 5-15% of vegetable oil, 15-50% of polylactic acid, 10-20% of polybutylene adipate-polybutylene terephthalate copolymer and 5-30% of compatilizer. Preferably, the compatilizer accounts for 5-20% of the total weight of the raw materials. The full-biodegradable material has the advantages of excellent and stable properties and low cost, is biodegradable, well gives consideration to economic benefit and environmental benefit, and has wide application prospects. The invention also provides a preparation method of the full-biodegradable material. The preparation method is easy to implement, operate and control, can easily implement industrial production, and is beneficial to lowering the cost of the full-biodegradable material.

Description

technical field [0001] The invention relates to a composition of polymer compounds, in particular to a fully biodegradable material and a preparation method thereof. Background technique [0002] With the rapid development of the plastics industry, plastics have been widely used in various fields of the national economy and have a wide range of uses. However, it is followed by the generation of a large amount of waste plastics (for example, about 5 million tons of waste plastics are produced in China every year), most of which are polypropylene (PP), polyethylene (PE) and polystyrene ( PS) materials, these materials cannot be decomposed naturally, therefore, after the products such as disposable plastic packaging materials, agricultural films and disposable tableware made of PP materials, PE materials and PS materials are used, if their wastes are discarded at will , will accumulate on the land due to its non-degradability, causing serious white pollution, and this white po...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L3/06C08L51/02C08L67/04C08L67/02C08L23/08C08L31/04C08L33/02C08K11/00
CPCC08L67/04C08L3/02C08K11/00C08L2201/06
Inventor 王惠群
Owner ECOTA ENVIRONMENTAL TECH
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