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Biodegradable composition of resin containing starch, products and prepartion method

A biodegradable starch resin technology, applied in the field of biodegradable starch-containing resin composition and products and preparation, can solve the problems of poor heat sealing performance, delay thermal oxidation degradation speed, improve performance and safety , The effect of biodegradable performance improvement

Inactive Publication Date: 2007-02-21
李小鲁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of poor heat-sealing performance of the products made by the resin composition in the prior art, and provide a starch-containing resin composition that can be made into a biodegradable starch-containing resin composition with excellent heat-sealing performance

Method used

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  • Biodegradable composition of resin containing starch, products and prepartion method
  • Biodegradable composition of resin containing starch, products and prepartion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This example is used to illustrate the starch-containing resin composition provided by the present invention and its preparation method.

[0049] Adopt masterbatch method to prepare biodegradable starch-containing resin composition provided by the invention, concrete operation is as follows:

[0050] (1) the cornstarch (dry weight basis) of 45.0 weight parts, the polyalcohol component that is made up of the sorbitol of 6.0 weight parts and the glycerin of 4.0 weight parts and the calcium stearate of 0.5 weight parts and the calcium stearate of 0.5 weight parts The salt additive component composed of zinc stearate was added into a blender and mixed evenly to obtain pellets, wherein the speed of stirring and blending was 90 rpm, the temperature of stirring and blending was 35°C, and the time of stirring and blending was 10 minute;

[0051] (2) 9.0 parts by weight of ethylene-methyl acrylate copolymer (EAA), 5.0 parts by weight of ethylene-vinyl acetate copolymer and 30.0...

Embodiment 2

[0055] This example is used to illustrate the composition and preparation method of the present invention.

[0056] Adopt direct method to prepare the biodegradable starch-containing resin composition provided by the present invention to carry out granulation, concrete operations are as follows:

[0057] (1) 35.5 parts by weight of cornstarch (dry weight basis), a polyol component composed of 5.0 parts by weight of sorbitol and 3.0 parts by weight of glycerin, 10.0 parts by weight of ethylene-acrylic acid with a weight average molecular weight of 150,000 Ethyl ester copolymer, 39.0 parts by weight of the DOW chemical company's production trade mark is the metallocene polyethylene resin of 2045AC, the weight average molecular weight of 5.0 parts by weight is 140,000 ethylene-vinyl acetate copolymers, 0.2 parts by weight of stearic acid The salt additive component that the zinc stearate of calcium and 0.2 weight part forms and by the DSTP of the epoxy soybean oil of 0.8 weight par...

Embodiment 3

[0065] This example is used to illustrate the composition and preparation method of the present invention.

[0066] Prepare the biodegradable starch-containing resin composition S3 provided by the invention in the same manner as in Example 2, except that the addition of starch is 54.0 parts by weight (dry weight), and the addition of sorbitol is 5.0 parts by weight, the addition of glycerin is 3.0 parts by weight, the addition of epoxidized soybean oil is 0.8 parts by weight, the addition of zinc stearate is 0.3 parts by weight, the addition of calcium stearate is 0.2 parts by weight, EAA The addition amount of the metallocene polyethylene is 6.2 parts by weight, the addition amount of metallocene polyethylene is 10.5 parts by weight, and the addition amount of ethylene-vinyl acetate copolymer is 20.0 parts by weight. The composition of S3 is shown in Table 3 below.

[0067] starch

[0068] In terms of application, the composition provided in this example can be ma...

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Abstract

This invention discloses a biodegradable resin composition, which comprises starch, polyol, ethylene-acrylate copolymer, salt additive, polyolefin resin and copolymer of olefin and unsaturated alcohol carboxylate. The composition can be prepared by direct method or master batch method. The composition can be used to produce blow-molded products, press-molded products, injection-molded products and foam products. The products have good heat-sealing performance, good heat resistance and high biodegradability.

Description

technical field [0001] The invention relates to a biodegradable starch-containing resin composition and product and a preparation method of the composition. Background technique [0002] The development of modern industry, especially the rapid development of petrochemical industry, provides excellent performance and cheap synthetic resin and plastic products, especially plastic film and foam plastic products, for industrial and agricultural production and people's daily necessities, which promotes the development of industrial and agricultural production It has greatly enriched people's material life. However, the waste after use is not properly disposed of, and it is thrown into fields, rivers, mountains, streets, parks, etc., which has also caused serious pollution to the living environment of human beings, leading to one of the biggest public hazards in today's society. "White pollution" has aroused widespread concern. In recent years, countries around the world have leg...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08K5/09B29B9/12B29C47/00
Inventor 李小鲁
Owner 李小鲁
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