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Environment-friendly degradable packaging bottle and preparation method thereof

A green and environmentally friendly packaging bottle technology, applied in the field of plastic bottles, can solve the problems of accelerated aging of degradable plastics, unfavorable use of degradable materials, and decline in mechanical properties, so as to improve biodegradability and biocompatibility, and improve biodegradability. Degradability and the effect of improving the reaction conversion rate

Active Publication Date: 2021-04-16
广州赢盛塑料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since degradable plastics are generally easy to degrade under light and oxygen conditions, the mechanical properties of degradable plastics are greatly reduced after degradation, so that the aging speed of degradable plastics is accelerated, and the service life is greatly shortened, which is not conducive to the use of degradable materials. Therefore, There is still room for improvement

Method used

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  • Environment-friendly degradable packaging bottle and preparation method thereof
  • Environment-friendly degradable packaging bottle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A green and environmentally friendly degradable packaging bottle, including components of the following qualities:

[0045] 100 kg of polylactic acid, 25 kg of polybutylene succinate, 15 kg of 3-maleimido propionic acid, 0.2 kg of triethanolamine, 0.05 kg of triphenyl phosphate, and 0.1 kg of triethyl phosphate.

[0046] It is prepared by the following steps:

[0047] Step 1, the maleic anhydride compound is mixed with triethanolamine to adjust the pH to 9, then heated to 70° C., and ultrasonicated for 20 minutes.

[0048] Step 2, mix polylactic acid, 3-maleimidopropionic acid, polybutylene succinate, triphenyl phosphate, and triethyl phosphate, adjust the pH to 9, and set the temperature at 180r / min , stirred for 4min to obtain the mixture;

[0049] Step 3, then heat the mixture in the screw extruder for 30 minutes and 180°C to make the mixture in a molten state, control the molding pressure to 62kg, and the air pressure to 6kg for blow molding.

Embodiment 2

[0051] A green and environmentally friendly degradable packaging bottle, including components of the following qualities:

[0052] 100kg of polylactic acid, 30kg of polybutylene succinate, 16kg of 3-maleimidopropionic acid, 0.3kg of triethanolamine, 0.03kg of triphenyl phosphate, and 0.12kg of triethyl phosphate.

[0053] It is prepared by the following steps:

[0054] Step 1, the maleic anhydride compound is mixed with triethanolamine to adjust the pH to 9.5, then heated to 65° C., and ultrasonicated for 15 minutes.

[0055] Step 2, mix polylactic acid, 3-maleimidopropionic acid, polybutylene succinate, triphenyl phosphate, and triethyl phosphate, adjust the pH to 9.5, and set the temperature at 220r / min , stirred for 3 minutes to obtain the mixture;

[0056] Step 3, then heat the mixture in the screw extruder for 33 minutes and 190°C to make the mixture in a molten state, control the molding pressure to 58kg, and the air pressure to 5.8kg for blow molding.

Embodiment 3

[0058] A green and environmentally friendly degradable packaging bottle, including components of the following qualities:

[0059] 100kg of polylactic acid, 20kg of polybutylene succinate, 12kg of 3-maleimidopropionic acid, 0.2kg of triethanolamine, 0.08kg of triphenyl phosphate, and 0.12kg of triethyl phosphate.

[0060] It is prepared by the following steps:

[0061] Step 1, the maleic anhydride compound is mixed with triethanolamine, the pH is adjusted to 8.5, then heated to 75° C., and ultrasonicated for 15-25 minutes.

[0062] Step 2, mix polylactic acid, 3-maleimidopropionic acid, polybutylene succinate, triphenyl phosphate, and triethyl phosphate, adjust the pH to 8.5, and set the temperature at 200r / min , stirred for 5 minutes to obtain a mixture;

[0063] Step 3, then heat the mixture in the screw extruder for 26 minutes to 170-190°C to make the mixture in a molten state, control the mold pressure to 65kg, and the air pressure to 6.5kg for blow molding.

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Abstract

The invention relates to the field of plastic bottles, and particularly discloses a green and environment-friendly degradable packaging bottle and a preparation method thereof. The environment-friendly degradable packaging bottle includes: polylactic acid, polyester, a maleimide compound, triethanolamine, and a heat stabilizer; wherein end-capping groups at two ends of the polyester are carboxyl and hydroxyl. The preparation method of the environment-friendly degradable packaging bottle comprises the following steps: step 1, mixing maleimide compounds with triethanolamine; 2, mixing polylactic acid, maleimide compounds, polyester and a heat stabilizer, adjusting the pH value, and stirring all the components uniformly to obtain a mixture; and 3, heating the mixture in a screw extruder to a molten state, and carrying out extrusion injection molding. According to the invention, the polyester, the maleimide compound and the polylactic acid are matched to form a cross-linked network, so that the mechanical strength is improved; due to the introduction of amide groups, the biodegradability of the environment-friendly degradable packaging bottle is improved.

Description

technical field [0001] The present application relates to the field of plastic bottles, more specifically, it relates to a green environment-friendly degradable packaging bottle and a preparation method thereof. Background technique [0002] Plastic products are light in weight, high in strength, corrosion-resistant, and low in price. They are the preferred packaging materials. However, the pollution caused by plastics is becoming more and more serious. Degradable plastics can improve the environmental protection of plastics and reduce the pollution of plastics to the environment. [0003] Degradable plastics refer to the addition of some additives to promote their degradation or the use of degradable and renewable natural substances as raw materials, which can meet the application performance requirements during the use and storage period. Its chemical structure will change significantly in a short period of time, and it will be further degraded into substances that are har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08K5/3415C08K5/17C08K5/523C08K5/521
CPCY02W90/10
Inventor 姚茂林董成辉
Owner 广州赢盛塑料制品有限公司
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