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Starch master batch composition, starch master batch and preparation method of starch master batch

A composition, starch technology, applied in the direction of biological packaging, flexible covering, sustainable manufacturing/processing, etc., can solve the problems of plastic performance degradation, no more than 45% (starch addition can not exceed 25%, etc.)

Inactive Publication Date: 2020-10-23
BEIJING YISIDE LOGISTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The easy-degradable environmentally friendly plastics produced by it have excellent easy-degradable environmental protection properties and can be widely used in many industries; at the same time, the existing starch-based plastics, especially for the preparation of various plastic bag products, due to production costs, In consideration of timeliness and processing convenience, starch or starch masterbatch is usually used directly, and the above-mentioned starch masterbatch is produced by the manufacturer on a large scale, but if it is made into a plastic bag, the addition of starch masterbatch in the existing process The amount generally cannot exceed 45% (the amount of starch added cannot exceed 25%), otherwise the performance of the plastic produced will be seriously attenuated

Method used

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  • Starch master batch composition, starch master batch and preparation method of starch master batch
  • Starch master batch composition, starch master batch and preparation method of starch master batch

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preparation example Construction

[0058] Second aspect, the present invention provides a kind of preparation method of starch masterbatch, adopts described starch masterbatch composition of the present invention to prepare, and this method comprises the following steps:

[0059] 1) adding the starch and plasticizer into a high-speed mixer and stirring at room temperature for 15-30 minutes;

[0060] 2) Add the remaining components, continue to stir at room temperature for 10-15 minutes, release for later use;

[0061] 3) Use a parallel twin-screw granulator to extrude and granulate to obtain starch masterbatch.

[0062] In the method of the present invention, preferably, the temperature of each section of the twin-screw granulator unit is 90-175° C., and the screw speed is 250-400 rpm.

[0063] In a third aspect, the present invention provides a starch masterbatch prepared by the above method.

[0064] There is no special limitation on the particle size of the above-mentioned starch masterbatch, according to ...

Embodiment 1

[0076] Corn starch 50wt%, glycerin 10wt%, LLDPE 26wt%, PE wax 1wt%, LDPE-g-MA8wt%+POE-g-MA 4wt%, additives 1wt%.

Embodiment 2

[0078] Corn starch 50wt%, glycerin 10wt%, LLDPE 26wt%, PE wax 1wt%, LDPE-g-MA6wt%+POE-g-MA 6wt%, additives 1wt%.

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Abstract

The invention relates to the field of biodegradable materials, and discloses a starch master batch composition, a starch master batch and a preparation method of the starch master batch. Based on thetotal weight of the starch master batch composition, the starch master batch composition contains 30-70 wt% of starch, 5-20 wt% of a plasticizer, 8-35 wt% of a carrier, 2-15 wt% of a compatilizer, 1-5wt% of a lubricant and 0.1-1 wt% of an auxiliary agent. According to the starch master batch composition and the starch master batch provided by the invention, by optimizing the components and the proportions thereof, the addition amount of the starch in a starch-based plastic product can be further increased, cost is saved, the excellent plastic performance of the prepared product is ensured, and the environmental protection performance of the product is further improved.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a starch masterbatch composition, a starch masterbatch and a preparation method thereof. Background technique [0002] With the rapid development of China's economy and e-commerce, the demand and usage of express packaging bags have increased dramatically. Existing express packaging bags are mainly used in the express industry to transport documents, goods, etc., but this kind of disposable packaging is mostly plastic packaging bags made of polyethylene and other materials, which have the advantages of low cost, convenient use, and good waterproof performance. features. [0003] While express packaging bags bring great convenience to people's lives, with the increase in usage, the waste of such disposable packaging bags increases sharply. However, because polyethylene is not easy to decompose and recycle, its waste Things become harmful garbage, pollute the environment, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L23/08C08L23/06C08L51/06C08K5/053C08J3/22B65D65/46
CPCC08J3/226B65D65/466C08J2403/02C08J2423/08C08J2323/06C08K5/053C08K2201/014Y02W90/10
Inventor 常江
Owner BEIJING YISIDE LOGISTICS TECH