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Degradable environment-friendly plastic and preparation method thereof

An environmentally friendly plastic and environmentally friendly technology, applied in the field of degradable environmentally friendly plastics and their preparation, can solve the problems of large waste volume, white pollution, and difficulty in degradation.

Inactive Publication Date: 2021-02-09
崔伟荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These wastes are large in size, take a long time to decompose, and are very difficult to degrade in the natural environment, thus causing increasingly serious "white pollution"

Method used

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  • Degradable environment-friendly plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A degradable environmentally friendly plastic, comprising the following raw materials in parts by weight: 35 parts of environmentally friendly composite emulsion, 30 parts of degradable PVA, 20 parts of polylactic acid resin, 0.5 part of zinc stearate, and 1 part of methyl methacrylate-maleic anhydride;

[0030] The degradable environmentally friendly plastic is made by the following method:

[0031]Environmentally friendly composite emulsion, degradable PVA, polylactic acid resin, zinc stearate and methyl methacrylate-maleic anhydride were added to the mixer in sequence, and stirred for 45 minutes at a speed of 500r / min to obtain a mixture, and then Add the mixture into the twin-screw extruder, control the temperature of the first stage of the twin-screw extruder to 140°C, the temperature of the second stage to 160°C, the temperature of the third stage to 180°C, and the temperature of the die head to be 200°C. Produce degradable and environmentally friendly plastics. ...

Embodiment 2

[0040] A degradable environmentally friendly plastic, comprising the following raw materials in parts by weight: 40 parts of environmentally friendly composite emulsion, 35 parts of degradable PVA, 22 parts of polylactic acid resin, 0.8 part of zinc stearate, 2 parts of methyl methacrylate-maleic anhydride;

[0041] The degradable environmentally friendly plastic is made by the following method:

[0042] Environmentally friendly composite emulsion, degradable PVA, polylactic acid resin, zinc stearate and methyl methacrylate-maleic anhydride were added to the mixer in sequence, and stirred for 45 minutes at a speed of 500r / min to obtain a mixture, and then Add the mixture into the twin-screw extruder, control the temperature of the first stage of the twin-screw extruder to 140°C, the temperature of the second stage to 160°C, the temperature of the third stage to 180°C, and the temperature of the die head to be 200°C. Produce degradable and environmentally friendly plastics.

...

Embodiment 3

[0051] A degradable environmentally friendly plastic, comprising the following raw materials in parts by weight: 45 parts of environmentally friendly composite emulsion, 40 parts of degradable PVA, 26 parts of polylactic acid resin, 0.8 part of zinc stearate, and 2 parts of methyl methacrylate-maleic anhydride;

[0052] The degradable environmentally friendly plastic is made by the following method:

[0053] Environmentally friendly composite emulsion, degradable PVA, polylactic acid resin, zinc stearate and methyl methacrylate-maleic anhydride were added to the mixer in sequence, and stirred for 45 minutes at a speed of 500r / min to obtain a mixture, and then Add the mixture into the twin-screw extruder, control the temperature of the first stage of the twin-screw extruder to 140°C, the temperature of the second stage to 160°C, the temperature of the third stage to 180°C, and the temperature of the die head to be 200°C. Produce degradable and environmentally friendly plastics....

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Abstract

The invention discloses degradable environment-friendly plastic and a preparation method thereof. The degradable environment-friendly plastic comprises the following raw materials in parts by weight:35-55 parts of an environment-friendly composite emulsion, 30-45 parts of degradable PVA, 20-30 parts of polylactic resin, 0.5-1 part of zinc stearate and 1-3 parts of a compatilizer. The preparationmethod comprises the following steps: sequentially adding the environment-friendly composite emulsion, the degradable PVA, the polylactic resin, the zinc stearate and the compatilizer into a mixer, carrying out stirring for 45 minutes at a rotating speed of 500-550 r / min to obtain a mixture, and then adding the mixture into a double-screw extruder. Adipic acid dihydrazide has four amido groups, has good compatibility with water, and can form stable hydrazone linkage with aldehyde groups; and in a step S3, an adipic acid dihydrazide solution is mixed with a first product and a second product, and the adipic acid dihydrazide can perform amido modification on the first product, so the prepared environment-friendly composite emulsion has excellent formaldehyde adsorption performance.

Description

technical field [0001] The invention belongs to the technical field of plastic preparation, in particular to a degradable environment-friendly plastic and a preparation method thereof. Background technique [0002] Plastic is a polymer compound made of a monomer as a raw material through addition polymerization or polycondensation reaction. It is commonly known as plastic or tree. It can freely change its composition and shape. , Colorants and other additives. With the rapid expansion of the scale of the plastic industry, plastic products have been used in large quantities, but a lot of disposable plastic waste that cannot be recycled is produced, and most of these wastes exist in solid form, including packaging bags, beverage bottles, agricultural mulch, etc. Disposable plastic items. These wastes are large in size, take a long time to decompose, and are very difficult to degrade in the natural environment, thus causing increasingly serious "white pollution". [0003] Ch...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L33/08C08L29/04C08L3/08C08L67/04C08K5/098C08F220/14C08F220/18C08F220/06
CPCC08F220/14C08L33/064C08L2201/06C08L2205/035C08F220/1804C08F220/06C08L29/04C08L67/04C08K5/098
Inventor 崔伟荣
Owner 崔伟荣
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