Antibacterial polypropylene and a preparing method thereof

An antibacterial polypropylene and polypropylene resin technology, applied in the field of polymers, can solve the problems of poor antibacterial effect of antibacterial agents, restrictions on large-scale production and application, and complicated preparation process, so as to achieve improved rigidity, high activity, and simple process Effect

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the mutual agglomeration of silver nanoparticles, a considerable amount of surfactant should be added during the reduction process, and finally the residual reducing agent and surfactant inside should be cleaned by continuous centrifugation. The preparation process is complicated and the preparation cycle is long. Limiting its large-scale production application
The content of nano-silver loaded on the carrier of this method is very low, resulting in poor antibacterial effect of the antibacterial agent, and the residual reducing agent and surfactant in the antibacterial agent have a great impact on its application
[0006] Polypropylene is a widely used thermoplastic with low price and good overall performance, but its antibacterial modification still needs further research

Method used

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  • Antibacterial polypropylene and a preparing method thereof
  • Antibacterial polypropylene and a preparing method thereof
  • Antibacterial polypropylene and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take a certain amount of heat-activated and dispersed attapulgite (AT), prepare it into an aqueous suspension with a mass concentration of attapulgite of 5%, and then add silver nitrate solution (AgNO 3 / AT=17 / 100) was added to the attapulgite suspension, at 70°C, magnetically stirred for 2 hours, then the attapulgite suspension was spray-dried at 175°C, and the composite powder obtained by spray drying was collected. Finally, the obtained composite powder was calcined in a muffle furnace at 400° C. for 30 minutes to obtain attapulgite-nanometer silver composite inorganic powder.

Embodiment 2

[0044] Except that the temperature of the magnetic stirring after mixing the silver nitrate solution and the attapulgite suspension was adjusted to 50° C., other process steps were the same as in Example 1.

Embodiment 3

[0046] Weigh a certain amount of attapulgite (AT) that has been heat-activated and dispersed, and prepare an aqueous suspension with a mass concentration of attapulgite of 1%, and then add silver nitrate solution (AgNO 3 / AT=17 / 100) was added to the attapulgite suspension, stirred magnetically for 1 h at 50°C, and then the attapulgite suspension was spray-dried at 200°C, and the composite powder obtained by spray drying was collected. Finally, the obtained composite powder was calcined in a muffle furnace at 500° C. for 30 minutes to obtain attapulgite-nanometer silver composite inorganic powder.

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Abstract

An antibacterial polypropylene material is disclosed. The antibacterial polypropylene material includes polypropylene resin and an antibacterial agent dispersed in the resin. The antibacterial agent is attapulgite-nanometer silver composite inorganic powder, wherein the mass ratio of the nanometer silver to the attapulgite is 10/100-100/100, and the particle diameter range of the nanometer silver is 3-100 nm. The composite antibacterial agent has advantages of a low using amount, a low cost, a simple preparing process, capability of improving mechanical performance, and the like, can improve antibacterial performance of the material, can increase material rigidity with a small using amount, and is an ideal polypropylene resin modifying auxiliary agent.

Description

technical field [0001] The present invention relates to the field of macromolecules, and furthermore, relates to a polypropylene material that uses attapulgite as a carrier and composite inorganic powder containing nano-silver particles as an antibacterial agent. The antibacterial polypropylene can be used in various production and life kind of field. Background technique [0002] As the demand for antibacterial plastic products continues to increase, various antibacterial agents and antibacterial plastics are also developing. Antibacterial agents are divided into inorganic antibacterial agents and organic antibacterial agents. Inorganic antibacterial agents, such as Ag, Zn, etc., have good safety, heat resistance, and durability, and they are loaded on inorganic carriers such as zeolite, glass, montmorillonite, and diatomaceous earth, and Ag, Zn ions can be released slowly come out. Organic antibacterial agents, such as cephabendazole, chlorothalonil, carbendazim, zinc p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/00C08K3/34C08K3/08C08K5/134C08K5/526
Inventor 郭敏刘轶群潘国元张杨严昊徐健
Owner CHINA PETROLEUM & CHEM CORP
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