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Starch master batch of completely biodegradable film and preparation method of starch master batch

A technology of biodegradation and starch, applied in the field of biodegradable film materials, can solve the problems of high energy consumption, high comprehensive cost of materials, low production capacity, etc., and achieve the effects of improving production efficiency, reducing raw material costs, and reducing production costs.

Pending Publication Date: 2022-04-05
中广核俊尔(浙江)新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main materials used in this invention are all completely biodegradable materials, but the main materials need to be dried for 6-24 hours, which requires high energy consumption, low production capacity, and relatively high overall cost of materials

Method used

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  • Starch master batch of completely biodegradable film and preparation method of starch master batch
  • Starch master batch of completely biodegradable film and preparation method of starch master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A starch masterbatch composition suitable for fully biodegradable films, including the following raw materials:

[0068] 85 parts of mixed bean starch,

[0069] 10 parts of two polyglycerin,

[0070] 3 parts xylitol,

[0071] 1 part polydextrose,

[0072] 0.2 parts of citric acid,

[0073] Antioxidant 1076 0.1 parts,

[0074] Antioxidant 626 0.1 parts,

[0075] Rare earth stabilizer 0.3 parts,

[0076] 0.3 part of tripolyglycerol monostearate.

Embodiment 2

[0078] A starch masterbatch composition suitable for fully biodegradable films, including the following raw materials:

[0079] 81 parts of sorghum starch,

[0080] Mannitol 10 parts,

[0081] 5 parts of sorbitol,

[0082] PEG-3000 2 parts,

[0083] 0.2 parts of succinic acid,

[0084] Antioxidant 1098 0.2 parts,

[0085] Antioxidant 168 0.3 parts,

[0086] 0.3 parts of copper salt heat stabilizer,

[0087] 1 part of pentaerythritol stearate.

Embodiment 3

[0089] A starch masterbatch composition suitable for fully biodegradable films, including the following raw materials:

[0090] 90 parts tapioca starch,

[0091] 5 parts of triglycerin,

[0092] 3 parts cetyl alcohol,

[0093] 1 part of PEG-8000,

[0094] 0.2 parts of boric acid,

[0095] Antioxidant 1010 0.1 part,

[0096] Antioxidant 168 0.1 part,

[0097] Phosphorous acid-benzenediisooctyl 0.1 part,

[0098] 0.5 parts of tripolyglycerol distearate.

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Abstract

The invention discloses a starch master batch composition suitable for a completely biodegradable film, which comprises the following components in parts by weight: 60-90 parts of starch, 5-20 parts of a liquid micromolecule plasticizer, 3-10 parts of a solid micromolecule plasticizer, 1-10 parts of a macromolecular plasticizer, 0.1-1 part of a cross-linking agent, 0.1-1 part of a thermo-oxidative aging resistant agent, 0.1-1 part of a heat stabilizer and 0.1-2 parts of a lubricant. The preparation method comprises the following steps: uniformly mixing the raw materials according to the ratio, adding the mixture into a double-screw granulating unit, extruding and granulating to obtain the starch master batch suitable for the completely biodegradable film; the temperature of each section of the twin-screw granulator set is 45-180 DEG C, the rotating speed of screws is 150-450 rpm, and a high-speed mixer can be adopted for uniformly mixing and stirring and mixing for 5-20 minutes. The starch master batch composition suitable for the completely biodegradable film provided by the invention is a completely biodegradable material, and starch does not need to be dried before mixing, so that the comprehensive cost of the material is reduced. Meanwhile, by optimizing plasticizer components and using a ternary compound plasticizer, the proportion of starch in the starch master batch is further increased, and the comprehensive cost is further reduced.

Description

technical field [0001] The invention relates to the field of biodegradable film materials, in particular to a starch masterbatch composition suitable for completely biodegradable films and a preparation method thereof. Background technique [0002] Biodegradable plastics are a class of plastics that can be degraded by microorganisms that exist in nature. The ideal biodegradable plastic is non-toxic and harmless after degradation, and has excellent performance. [0003] Polybutylene terephthalate-adipate (PBAT) is a fully biodegradable aliphatic-aromatic copolyester, which has a high elongation at break of more than 700%, and has With good flexibility and processability, it has been widely used in plastic flexible packaging. Polylactic acid (PLA) is a kind of biodegradable material with high strength but high brittleness, which is made from lactic acid fermented by plants through polymerization. Combining PBAT and PLA to prepare a packaging film can combine the advantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L5/02C08K5/06C08K5/053C08K5/05C08K5/17C08K5/21C08J3/22
Inventor 李双武张磊黄瑞杰宋玉兴马志宇
Owner 中广核俊尔(浙江)新材料有限公司