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Degradable plastic and preparation method thereof

A technology for degrading plastics and plasticizers, applied in the field of plastic processing, can solve the problems of not being widely used and having no mechanical properties, and achieve the effects of strong practicability, low manufacturing cost, and reduced environmental pollution

Pending Publication Date: 2022-01-14
太仓协乐高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing degradable plastic products do not have good mechanical properties and cannot be widely used in some areas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A degradable plastic, comprising the following components and parts by weight: 20 parts of modified starch, 2 parts of polylactic acid, 20 parts of polylactide, 5 parts of polybutylene succinate, 1 part of plasticizer, 0.5 part of dispersant, 0.5 part of lubricant, 20 parts of calcium carbonate, 1 part of sorbitol.

[0021] A preparation method of degradable plastics, comprising the following steps:

[0022] In the first step, the modified starch, polylactic acid, polylactide, polybutylene succinate, plasticizer, dispersant, lubricant, calcium carbonate and sorbitol are added to the mixing container in parts by weight. Stir and mix, the stirring and mixing process time is 25-45 minutes, and the stirring temperature is 35-50 degrees Celsius;

[0023] In the second step, the mixed material after the first step is stirred and mixed is added to the screw extruder, and five temperature zones are set in the screw extruder, the temperature of the first zone is 80 degrees Cels...

Embodiment 2

[0032] A degradable plastic, comprising the following components and parts by weight: 30 parts of modified starch, 4 parts of polylactic acid, 35 parts of polylactide, 8 parts of polybutylene succinate, 5 parts of plasticizer, 0.7 parts of dispersant, 1.6 parts of lubricant, 30 parts of calcium carbonate, 4 parts of sorbitol.

[0033] A preparation method of degradable plastics, comprising the following steps:

[0034] In the first step, the modified starch, polylactic acid, polylactide, polybutylene succinate, plasticizer, dispersant, lubricant, calcium carbonate and sorbitol are added to the mixing container in parts by weight. Stirring and mixing, the stirring and mixing process time is 45 minutes, and the stirring temperature is 35 degrees Celsius;

[0035] The second step is to add the mixed material after the first step is stirred and mixed into the screw extruder. There are five temperature zones in the screw extruder. The temperature in the first zone is 100 degrees C...

Embodiment 3

[0043] Example 3 A degradable plastic, including the following components and parts by weight: 40 parts of modified starch, 5 parts of polylactic acid, 50 parts of polylactide, 15 parts of polybutylene succinate, plasticizer 10 parts, 1 part of dispersant, 3 parts of lubricant, 40 parts of calcium carbonate, 6 parts of sorbitol.

[0044] A preparation method of degradable plastics, comprising the following steps:

[0045] In the first step, the modified starch, polylactic acid, polylactide, polybutylene succinate, plasticizer, dispersant, lubricant, calcium carbonate and sorbitol are added to the mixing container in parts by weight. Stirring and mixing, the stirring and mixing process time is 45 minutes, and the stirring temperature is 50 degrees Celsius;

[0046] The second step is to add the mixed material after the first step is stirred and mixed into the screw extruder. There are five temperature zones in the screw extruder. The temperature in the first zone is 100 degree...

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PUM

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Abstract

The invention relates to a degradable plastic. The degradable plastic comprises the following components in parts by weight: 20-40 parts of modified starch, 2-5 parts of polylactic acid, 20-50 parts of polylactide, 5-15 parts of poly (butylene succinate), 1-10 parts of a plasticizer, 0.5-1 part of a dispersant, 0.5-3 parts of a lubricant, 20-40 parts of calcium carbonate and 1-6 parts of sorbitol. According to the degradable plastic and the preparation method thereof, environmental pollution can be effectively degraded and reduced, and the degradable plastic has good physical and mechanical properties, high practicability and relatively low product manufacturing cost.

Description

technical field [0001] The invention relates to a degradable plastic, in particular to a degradable plastic and a preparation method thereof, belonging to the technical field of plastic processing. Background technique [0002] Compared with traditional metal products, plastic products have the advantages of light weight, corrosion resistance, easy molding, elegant appearance, easy processing, and low cost. They are widely used in our lives and are indispensable at the same time. However, with the rapid growth of plastic production, waste plastics cannot be disposed of in time, resulting in more and more serious environmental pollution. Ordinary plastic is a by-product of petrochemicals, and it takes 200-300 years to decompose after use. Plastic waste invades land, blocks rivers, hinders sanitation, affects landscape, endangers the growth of crops and human health, and plastic waste has become pollution. An important factor in the human living environment. The control of w...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L3/02C08L67/02C08K13/02C08K3/26C08K5/053
CPCC08L67/04C08L2201/06C08L2205/035C08L2205/025C08K2201/014C08K2003/265C08L3/02C08L67/02C08K13/02C08K3/26C08K5/053
Inventor 石建国
Owner 太仓协乐高分子材料有限公司
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