One-step in situ preparation method of pa6 mesoporous nanomaterial@ag composite antibacterial resin

A nano-material and in-situ preparation technology, which is applied in the field of preparation of composite antibacterial resins, can solve problems such as complicated process methods, environmental pollution, and low efficiency, and achieve the effects of broad application prospects, simple operation, and low cost

Active Publication Date: 2020-10-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only needs to add polythiol compounds for reduction and modification, but also introduces organic solvents. The process method is relatively complicated, the efficiency is low, and it will bring environmental pollution problems.

Method used

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  • One-step in situ preparation method of pa6 mesoporous nanomaterial@ag composite antibacterial resin
  • One-step in situ preparation method of pa6 mesoporous nanomaterial@ag composite antibacterial resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Dissolve 2g of silver acetate in 60mL of water to form a silver acetate solution, add 35g of mesoporous silica and 0.5g of polyvinylpyrrolidone (PVP) to the solution, form a suspension by ultrasonic stirring, and add it to a 5L polymerization kettle Mesoporous nanomaterials loaded with silver acetate were prepared by applying vacuum negative pressure.

[0022] (2) Add 1.5kg of caprolactam into the above reaction kettle, then raise the temperature to 240°C, and react at this temperature for 2h; after removing water from the whole reaction system, continue to heat up to 260°C, react for 2.5h, and complete the preparation of PA6 mesoporous in one step Silica@Ag composite antibacterial resin.

[0023] According to the antibacterial plastic testing standard QB / T2591-2003A "antibacterial plastic antibacterial performance test method and antibacterial effect", the antibacterial test of the above composite antibacterial resin was carried out, and the antibacterial rate of t...

Embodiment 2

[0025] (1) Dissolve 2.5g of silver acetate in 70mL of water to form a silver acetate solution, add 40g of halloysite nanotubes and 0.6g of polyvinylpyrrolidone (PVP) to the solution, form a suspension by ultrasonic stirring, add it to 5L of polymerization The mesoporous nanomaterials loaded with silver acetate were prepared in the autoclave and applied vacuum negative pressure.

[0026] (2) Add 1.5kg of caprolactam into the above reaction kettle, then raise the temperature to 250°C, and react at this temperature for 2.5h; after removing water from the whole reaction system, continue to heat up to 270°C, react for 2h, and complete the preparation of PA6 Elo in one step Stone nanotube@Ag composite antibacterial resin.

[0027] According to the antibacterial plastic testing standard QB / T2591-2003A "antibacterial plastic antibacterial performance test method and antibacterial effect", the antibacterial test of the above composite antibacterial resin was carried out, and the antiba...

Embodiment 3

[0029] (1) Dissolve 2.5g of silver acetate in 70mL of water to form a silver acetate solution, add 45g of mesoporous titanium dioxide and 0.5g of polyvinylpyrrolidone (PVP) to the solution, form a suspension by ultrasonic stirring, and add it to a 5L polymerization kettle And applying vacuum negative pressure to prepare mesoporous nanomaterials loaded with silver acetate.

[0030] (2) Add 1.5kg of caprolactam into the above reaction kettle, then raise the temperature to 250°C, and react at this temperature for 2 hours; after removing water from the entire reaction system, continue to heat up to 270°C, react for 4 hours, and complete the preparation of PA6 mesoporous titanium dioxide in one step @Ag composite antibacterial resin.

[0031] According to the antibacterial plastic testing standard QB / T2591-2003A "antibacterial plastic antibacterial performance test method and antibacterial effect", the antibacterial test of the above composite antibacterial resin was carried out, a...

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Abstract

The invention relates to a one-step method for preparing a PA6 mesoporous nanomaterial@Ag composite antibacterial resin in situ. The method comprises the following steps: dissolving silver acetate into water to obtain a silver acetate solution, adding mesoporous inorganic nanoparticles and polyvinylpyrrolidone PVP, performing ultrasonic stirring to form turbid liquid, applying a vacuum negative pressure to obtain mesoporous nanomaterial supported silver acetate, adding caprolactam, carrying out a ring-opening reaction, dewatering, and carrying out a condensation polymerization reaction, thereby obtaining the product. The method disclosed by the invention is simple in operation, high-efficiency and low in cost, has a wide processing and application range, does not introduce any organic solvent or any other chemical substance, is environmental-friendly and has wide application prospects. The prepared PA6 mesoporous nanomaterial@Ag composite antibacterial resin is controllable in component content, and has high-efficiency antibacterial action and lasting and stable antibacterial effects.

Description

technical field [0001] The invention belongs to the field of preparation of composite antibacterial resins, in particular to a method for in-situ preparation of PA6 mesoporous nanomaterial@Ag composite antibacterial resins. Background technique [0002] The environmental pollution in today's society is serious, the ecological environment is gradually deteriorating, and the special living microenvironment such as various confined spaces has accelerated the development and utilization of functional protection products. Antimicrobial resins have received great attention due to their wide range of processing methods and application fields. At present, ordinary polymer resin itself does not have antibacterial ability, and under certain conditions, it will provide an environment for bacteria to survive and reproduce, threatening human health. The main method to solve the antibacterial problem is to introduce antibacterial agents (including organic antibacterial agents, organometa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/14C08G69/16C08K9/12C08K3/08C08K7/26C08K7/24
CPCC08G69/14C08G69/16C08K3/08C08K7/24C08K7/26C08K9/12C08K2003/0806C08K2201/011C08K3/041
Inventor 朱美芳周家良相恒学张杨凯
Owner DONGHUA UNIV
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