Silicon dioxide loaded nano-silver waterborne antibacterial paint and preparation method thereof

A technology of antibacterial coatings and porous silica, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problem of low utilization rate of silver components, poor dispersion, antibacterial efficiency, and long-lasting antibacterial Insufficient resistance and other problems, to achieve the effect of improving the use efficiency and durability, increasing the specific surface area, and improving the antibacterial effect

Inactive Publication Date: 2017-09-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of porous silica-loaded nano-silver water-based antibacterial coating and its preparation method for the low utilization rate of silver component of the existing silver antibacterial coating, insufficient antibacterial efficiency, antibacterial persistence, and poor dispersibility.

Method used

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  • Silicon dioxide loaded nano-silver waterborne antibacterial paint and preparation method thereof
  • Silicon dioxide loaded nano-silver waterborne antibacterial paint and preparation method thereof
  • Silicon dioxide loaded nano-silver waterborne antibacterial paint and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A porous silicon dioxide-loaded nano-silver water-based antibacterial coating, in parts by weight, its raw materials are composed of: 25 parts of water, 30 parts of acrylic resin, 20 parts of polyurethane resin, 2 parts of porous silica-loaded nano-silver antibacterial agent, 1.5 parts of dispersant, 1 part of curing agent, 0.8 part of defoamer, 0.5 part of film-forming aid and 0.5 part of leveling agent.

[0026] The preparation of described porous silicon dioxide loaded nano-silver antibacterial agent:

[0027] 1) Porous SiO 2 Preparation: Dissolve 0.5g of cetyl ammonium bromide (CTAB) in a mixed solution consisting of 50mL of water, 10mL of ethanol and 15mL of ether at room temperature, stir for 20min, add 1.2mL of ammonia water, stir for 20min, then add 3 mL of tetraethyl orthosilicate (TEOS), then add 0.15 m of 3-aminopropyltriethoxysilane (APTES) and stir for 4 h, wash the resulting dispersion with ethanol and deionized water for 3 times respectively. 2 ;

[00...

Embodiment 2

[0033] A kind of porous silicon dioxide loaded nano-silver water-based antibacterial coating, by weight, its raw material consists of: 35 parts of water, 40 parts of acrylic resin, 30 parts of polyurethane resin, 3 parts of antibacterial agent, 2.5 parts of dispersant, curing agent 1.5 parts, 1 part of defoamer, 0.8 parts of film-forming aid and 0.8 parts of leveling agent.

[0034] The preparation method of described antibacterial agent is with embodiment 1.

[0035] The preparation method of porous silicon dioxide loaded nano-silver water-based antibacterial coating is:

[0036] After mixing water, acrylic resin, polyurethane resin, dispersant, curing agent, defoamer, film-forming aid and leveling agent in proportion, add antibacterial agent, and then use mechanical shearing to mix evenly to prepare A new type of porous silica-loaded nano-silver high-efficiency water-based antibacterial coating was obtained.

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Abstract

The invention discloses silicon dioxide loaded nano-silver waterborne antibacterial paint and a preparation method thereof, and belongs to the field of chemical paint. The paint is prepared from the following components: water, acrylic resin, polyurethane resin, a porous silicon dioxide loaded nano-silver antibacterial agent, a dispersant, a curing agent, a de-foaming agent, a film-forming auxiliary agent and a flatting agent. According to the silicon dioxide loaded nano-silver waterborne antibacterial paint, nano-silver is loaded in porous silicon dioxide, so that the effect of protecting the nano-silver is realized; a releasing speed of the nano-silver can also be slowed down to a certain extent, so that the antibacterial time of the paint is more durable. A pore channel space is limited and a special preparation process is adopted (under the protection effect of PVP (Polyvinyl Pyrrolidone)), the size of the nano-Ag is controlled to be only 3nm to 5nm, so that the specific surface area of the nano-Ag is greatly increased. Furthermore, a special pore channel of the porous silicon dioxide has a fixation effect on the nano-Ag, so that the nano-Ag is not easy to aggregate and has good dispersity in a solution, and the antibacterial performance of the paint is improved.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to a porous silicon dioxide-loaded nano-silver water-based antibacterial coating and a preparation method thereof. Background technique [0002] The development of paint has a long history. More than 3,000 years ago, the ancient people of our country could use natural oils and resins such as tung oil and rosin to make paint. Since the eighteenth century, the development of modern natural science and the establishment of organic chemistry have laid a solid theoretical foundation for the research of coatings, and coatings have officially entered the industrial stage. From the nineteenth century to the twentieth century, with the establishment and development of polymer chemistry, coatings began to gradually move towards the era of synthetic resins, and epoxy, amino, nitro, polyester, polyurethane, acrylic, silicone, fluorocarbon, etc. appeared successively. Functional coatings. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12C09D5/14
CPCC09D133/00C08K2003/0806C08K2201/011C08L2205/035C09D5/14C08L75/04C08K13/06C08K7/26C08K9/06C08K3/08C08K9/12
Inventor 郑玉婴黄连根
Owner FUZHOU UNIV
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