Degradable antibacterial functional master batch special for polylactic acid and preparation method of degradable antibacterial functional master batch

A technology of functional masterbatch and polylactic acid, which is applied in the field of plastic modification processing, can solve the problems of affecting the antibacterial performance of products, uneven dispersion of raw materials, and environmental pollution caused by dust, so as to shorten the processing molding cycle, excellent flow dispersion, and improve antibacterial properties. performance effect

Pending Publication Date: 2022-04-15
江苏万纳普新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of plastic blending modification, the blending process of granular resin and powder or liquid modification additives has problems such as complex batching process, uneven dispersion of raw materials, and environmental pollution caused by dust, which will affect the antibacterial properties of the product. performance

Method used

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  • Degradable antibacterial functional master batch special for polylactic acid and preparation method of degradable antibacterial functional master batch

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a special degradable antibacterial functional masterbatch for polylactic acid, the mass ratio of its components is as follows: 85.0kg low molecular weight polylactic acid; 10.0kg glass / zeolite carrier silver zinc ion antibacterial ); 3.0kg nano-cerium dioxide; 1.0kg mesoporous zirconium hydrogen phosphate; 0.1kg anti-thermal oxygen aging additive; 2.9kg calcium stearate. Among them, the anti-thermal and oxidative aging additive is a compound composed of antioxidant 245 and antioxidant 626 in a mass ratio of 1:1.

[0032] This embodiment also provides a preparation method for the above-mentioned antibacterial functional masterbatch, which specifically includes the following steps:

[0033] Weigh low molecular weight polylactic acid, silver zinc ion antibacterial agent of glass / zeolite carrier, nano ceria, mesoporous zirconium hydrogen phosphate, anti-thermal oxygen aging additive and calcium stearate according to the proportion, and put them into...

Embodiment 2

[0035] This embodiment provides a special degradable antibacterial functional masterbatch for polylactic acid, the mass ratio of its components is as follows: 75.0kg low molecular weight polylactic acid; 18.0kg glass carrier silver ion antibacterial agent (Bactekiller BM-502FA); 1.0 kg nanometer cerium oxide; 3.0kg mesoporous zirconium hydrogen phosphate; 0.3kg anti-thermal oxygen aging additive; 2.7kg zinc stearate. Among them, the anti-thermal and oxidative aging additive is a compound composed of antioxidant 245 and antioxidant 626 in a mass ratio of 1:1.

[0036] This embodiment also provides a preparation method for the above-mentioned antibacterial functional masterbatch, which specifically includes the following steps:

[0037] Weigh low molecular weight polylactic acid, silver ion antibacterial agent of glass carrier, nano cerium dioxide, mesoporous zirconium hydrogen phosphate, anti-thermal oxygen aging additive and zinc stearate according to the proportion, and put t...

Embodiment 3

[0039] This embodiment provides a special degradable antibacterial functional masterbatch for polylactic acid, the mass ratio of its components is as follows: 82.0kg low molecular weight polylactic acid; 13.0kg glass / zeolite carrier silver zinc ion antibacterial agent (Bactekiller BM-102SD ); 3.0kg nanometer cerium dioxide; 1.0kg mesoporous zirconium hydrogen phosphate; 0.2kg anti-thermal oxygen aging additive; 2.8kg oleic acid amide. Among them, the anti-thermal and oxidative aging additive is a compound composed of antioxidant 245 and antioxidant 626 in a mass ratio of 1:1.

[0040] This embodiment also provides a preparation method for the above-mentioned antibacterial functional masterbatch, which specifically includes the following steps:

[0041] Weigh low molecular weight polylactic acid, glass / zeolite carrier silver zinc ion antibacterial agent, nano ceria, mesoporous zirconium hydrogen phosphate, anti-thermal oxygen aging additive and oleic acid amide according to the...

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Abstract

The invention relates to the technical field of plastic modification processing, in particular to a special degradable antibacterial functional master batch for polylactic acid and a preparation method of the special degradable antibacterial functional master batch, and the antibacterial functional master batch comprises the following components in percentage by mass: 75.0-85.0% of low-molecular-weight polylactic acid; 10.0 to 20.0 wt.% of an inorganic antibacterial agent; 1.0 to 3.0 wt.% of nano cerium dioxide; 1.0 to 3.0 wt.% of mesoporous zirconium hydrogen phosphate; 0.1 to 0.3 wt.% of a thermo-oxidative aging resistant auxiliary agent; and 2.5-3.0 wt.% of a dispersing aid. According to the antibacterial functional master batch provided by the invention, a powder antibacterial agent of a silver-zinc ion inorganic substance carrier is adopted, and mesoporous zirconium hydrogen phosphate is introduced into the antibacterial functional master batch, so that the antibacterial performance of a modified polylactic acid special material adopting the antibacterial functional master batch can be remarkably improved, and the action period of the antibacterial function of modified biodegradable plastic is prolonged; the processing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of plastic modification processing, in particular to a special degradable antibacterial functional masterbatch for polylactic acid and a preparation method thereof. Background technique [0002] Melt blending of plastics by twin-screw extrusion granulation unit is a simple and easy traditional thermoplastic modification method. Its modification effect is excellent, and it can realize the continuous production of plastic modified products. The prepared modified The special material can be molded into various plastic products by injection or extrusion. This technical route can not only improve the physical and mechanical properties of plastic products such as strength, toughness, stiffness, creep resistance, and flexure resistance, but also endow plastic products with special properties such as flame retardancy, electrical conductivity, thermal conductivity, magnetic conductivity, antistatic, and antibacterial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K9/12C08K3/015C08K7/24C08K3/22C08J3/22
Inventor 李翰卿汪晓东蔡文鹏
Owner 江苏万纳普新材料科技有限公司
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