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Universal biodegradable plastic antibacterial master batch as well as preparation method and application thereof

A technology for degrading plastics and antibacterial masterbatches, applied in the field of plastic modification processing, can solve the problems that antibacterial additives cannot be uniformly dispersed, the degradable compatibility is limited, and the antibacterial properties of products are affected, so as to shorten the processing and molding cycle and improve antibacterial properties Efficacy, the effect of improving mechanical properties

Pending Publication Date: 2022-04-29
江苏万纳普新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the antibacterial additives currently on the market are powder or liquid. When the twin-screw extruder is used to realize plastic blending and modification, the antibacterial additives cannot be uniformly dispersed, which easily affects the antibacterial performance of the product. At the same time, it is easy to raise dust during processing. Antimicrobial additives are also limited by the type of carrier and the compatibility of the modified biodegradable

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  • Universal biodegradable plastic antibacterial master batch as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0036] The present embodiment provides a general-purpose biodegradable plastic antibacterial masterbatch, the mass ratio of its components is as follows: 30.0kg PLA; 30.0kg PBS; 20.0kg PHB; 0.1kg tetrabutyl titanate; 15.0kg glass / Silver zinc ion antibacterial agent (Bactekiller BM-102TG) of zeolite carrier; 2.0kg nano cerium oxide; 1.0kg mesoporous zirconium hydrogen phosphate; 0.9kg pentaerythritol stearate; 1.0kg calcium stearate.

[0037] The present embodiment also provides the preparation method of above-mentioned antibacterial masterbatch, specifically comprises the following steps:

[0038] S1, premixing: weigh PLA, PBS, PHB, tetrabutyl titanate, silver zinc ion antibacterial agent of glass / zeolite carrier, nano cerium dioxide, mesoporous zirconium hydrogen phosphate, pentaerythritol stearate and Calcium stearate, and it is dropped into high-speed mixer successively and premixed, obtains premix;

[0039] S2. Thermal mixing: Transfer the premixed material obtained in s...

Embodiment 2

[0042]This embodiment provides a general-purpose biodegradable plastic antibacterial masterbatch, the mass ratio of its components is as follows: 25.0kg PLA; 30.0kg PBS; 25.0kg PHB; 0.07kg tetrabutyl titanate; 14.0kg glass carrier 3.0kg nanometer cerium oxide; 2.0kg mesoporous zirconium hydrogen phosphate; 0.5kg ethylene-vinyl acetate copolymer wax; 0.43kg zinc stearate.

[0043] The present embodiment also provides the preparation method of above-mentioned antibacterial masterbatch, specifically comprises the following steps:

[0044] S1. Premixing: Weigh PLA, PBS, PHB, tetrabutyl titanate, silver ion antibacterial agent on glass carrier, nano-cerium dioxide, mesoporous zirconium hydrogen phosphate, ethylene-vinyl acetate copolymer wax and Zinc stearate, and it is put into high-speed mixer successively and carries out premixing, obtains premix;

[0045] S2. Thermal mixing: Transfer the premix obtained in step S1 to an internal mixer for thermal mixing. The mixing temperature...

Embodiment 3

[0048] The present embodiment provides a general-purpose biodegradable plastic antibacterial masterbatch, the mass ratio of its components is as follows: 25.0kg PLA; 30.0kg PBS; 25.0kg PHB; 0.05kg tetrabutyl titanate; 18.0kg glass / Zeolite carrier silver zinc ion antibacterial agent (Bactekiller BM-102SD); 1.0kg nanometer cerium oxide; 2.5kg mesoporous zirconium hydrogen phosphate; 0.55kg ethylene-acrylic acid copolymer wax; 0.9kg oleic acid amide.

[0049] The present embodiment also provides the preparation method of above-mentioned antibacterial masterbatch, specifically comprises the following steps:

[0050] S1. Premixing: Weigh PLA, PBS, PHB, tetrabutyl titanate, silver zinc ion antibacterial agent on glass / zeolite carrier, nano-cerium dioxide, mesoporous zirconium hydrogen phosphate, ethylene-acrylic acid copolymer wax according to the above mass and oleic acid amide, and put it into a high-speed mixer successively for premixing to obtain a premix;

[0051] S2. Thermal...

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Abstract

The invention relates to the technical field of plastic modification processing, in particular to a universal biodegradable plastic antibacterial master batch as well as a preparation method and application thereof, and the antibacterial master batch comprises the following components in percentage by mass: 20.0-30.0% of polylactic acid; wt.% of poly (butylene succinate), 20.0 to 30.0 wt.% of poly (butylene succinate); %, 20.0 to 30.0 wt.% of polyhydroxybutyrate; wt.% to 0.1 wt.% of tetrabutyl titanate; 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; 0.5 to 1.0 wt.% of a dispersing aid; and 0.5 to 1.0 wt.% of a lubricant. The antibacterial master batch provided by the invention can be compatible with most biodegradable plastics, has universality, and can significantly improve the antibacterial performance of the biodegradable plastic special material modified by the antibacterial master batch.

Description

technical field [0001] The invention relates to the technical field of plastic modification processing, in particular to a general-purpose biodegradable plastic antibacterial masterbatch and its preparation method and application. Background technique [0002] Biodegradable plastics can be completely decomposed by the action of microorganisms such as bacteria, molds (fungi) and algae that exist in nature, and finally be inorganicized to become an integral part of the natural carbon cycle, so biodegradable plastics have the characteristics of environmental protection and sustainable development , is the main direction for the future development and application of polymer materials. Such as polylactic acid (PLA), polybutylene succinate (PBS), polyhydroxybutyrate (PHB), adipic acid-terephthalic acid-butylene glycol copolyester (PBAT) and other biodegradable Plastics have certain defects in performance, and often need to be modified before they can be used in plastic product pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08K3/22C08K7/24C08K9/12C08K3/015C08K5/00C08K13/06C08J3/22
CPCC08J3/226C08J2467/04C08J2467/02C08K2003/2213C08K2201/011C08K7/24C08K9/12C08K3/015C08K5/0058C08K13/06
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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