Long-acting antibacterial agent

An antibacterial agent and long-acting technology, applied in the field of materials, can solve problems such as insufficient antibacterial timeliness, decreased antibacterial activity, and insufficient stability, and achieve good market application prospects, overcome poor stability, and improve the effect of antibacterial timeliness

Inactive Publication Date: 2020-08-14
JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its active nature, nano-titanium dioxide is prone to defects such as insufficient stability and insufficient antibacterial timeliness. In addition, nano-titanium dioxide has the defect that it is easy to agglomerate due to its nanoparticle characteristics, which will lead to a decrease in its antibacterial activity.

Method used

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Embodiment 1

[0051] 1. Preparation of polyurethane airgel:

[0052] 1-1. Add diphenylmethane diisocyanate and propylene glycol polyether into acetone, stir and dissolve to obtain a mixed solution;

[0053] 1-2) adding dibutyltin dilaurate to the mixed solution;

[0054] 1-3) Stand still to obtain a gel, soak and wash with acetone, and then dry under supercritical carbon dioxide conditions to obtain polyurethane airgel.

[0055] Among them, the specific surface area of ​​polyurethane airgel is 750m 2 / g.

[0056] 2. Preparation of nano-silica polyurethane airgel composite carrier:

[0057] 2-1. Preparation of nano-silica dispersion: Add vinylbisstearamide to water, then add nano-silica powder, stir to obtain nano-silica dispersion.

[0058] 2-2. Prepare a polyurethane airgel dispersion; add vinyl bisstearamide to water, then add polyurethane airgel powder, and stir to obtain a polyurethane airgel dispersion.

[0059] 2-3. Blending and reacting the nano-silica dispersion with the polyuret...

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Abstract

The invention discloses a long-acting antibacterial agent. The long-acting antibacterial agent is prepared by the following steps: 1) preparing polyurethane aerogel, 2) preparing a nano silicon dioxide polyurethane aerogel composite carrier, and 3) preparing the antibacterial agent. According to the long-acting antibacterial agent disclosed by the invention, titanium dioxide is loaded in the silicon dioxide hollow microspheres, so that the defect of poor stability of titanium dioxide can be effectively overcome, titanium dioxide is slowly diffused to the outside, the antibacterial time efficiency of the long-acting antibacterial agent can be improved, and the utilization rate of titanium dioxide is increased. The nano titanium dioxide-nano silicon dioxide compound is stably adsorbed by utilizing the characteristics of high specific surface area and high porosity of the polyurethane aerogel, and agglomeration of the nano titanium dioxide-nano silicon dioxide compound can be prevented, so that the antibacterial effect of the nano titanium dioxide can be fully exerted, and finally, excellent antibacterial performance is obtained. The long-acting antibacterial agent disclosed by the invention can be applied to preparation of materials such as coatings or films with antibacterial properties, and has a very good market application prospect.

Description

technical field [0001] The invention relates to the field of materials, in particular to a long-acting antibacterial agent. Background technique [0002] Antibacterial agents are substances or products with antibacterial and bactericidal properties, including various categories, such as silver ion antibacterial agents, nano-titanium dioxide antibacterial agents, etc., which are widely used in their respective products. Among them, nano-titanium dioxide antibacterial agent has good antibacterial effect and is widely used. However, due to its active nature, nano-titanium dioxide is prone to defects such as insufficient stability and insufficient antibacterial timeliness. In addition, nano-titanium dioxide has the defect that it is easy to agglomerate due to its nanoparticle characteristics, which will lead to a decrease in its antibacterial activity. [0003] So now a more reliable solution is needed. Contents of the invention [0004] The technical problem to be solved by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/10A01P1/00C09D5/14C08K9/12C08K9/06C08K3/22C08K7/26
CPCA01N25/10A01N59/16C08K3/22C08K7/26C08K9/06C08K9/12C08K2003/2241C08K2201/011C09D5/14
Inventor 金闯张庆杰
Owner JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD
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