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A kind of nano-silver doped silicone resin-based antibacterial antifouling agent and its preparation method and application

A nano-silver and antifouling agent technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., to achieve the effect of high coating film hardness, simple construction process, and good antibacterial durability

Active Publication Date: 2022-06-24
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports in the literature that nano-silver doped in oily high-strength silicone resin-based antibacterial and antifouling coatings

Method used

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  • A kind of nano-silver doped silicone resin-based antibacterial antifouling agent and its preparation method and application
  • A kind of nano-silver doped silicone resin-based antibacterial antifouling agent and its preparation method and application
  • A kind of nano-silver doped silicone resin-based antibacterial antifouling agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

example 1-1

[0059] First, 20 g of methyl hydrogen-containing silicone oil (containing 1.6 wt% of H in Si-H) (0.32 moles of Si-H) and 79.8 g of absolute ethanol were mixed evenly, and 0.2 g of Speier catalyst (platinum concentration of 1500 ppm) was added (this When platinum is 15ppm of the total amount of hydrogen-containing polysilicon oil), react at 40 ° C for 2 hours, react at 70 ° C for 12 hours, cool, add 0.02 g of di-n-butyltin dilaurate (tin content is 18wt%) (tin is hydrogen-containing at this time) 180ppm of the total amount of polysiloxane), react at 60°C for 12 hours, and cool to obtain active silicone resin HG1 (formula (1) (R=Me, Et), x=y=0) ethanol solution (active silicone resin concentration is 34.4wt%, the active group OEt / Si (molar ratio) in the silicone resin is 0.96), standby; (the raw material methyl hydrogen silicone oil H / Si (molar ratio) is 0.96, that is, m is much greater than n, and n tends to be 0 (n=0 when methyl hydrogen silicone oil H / Si (molar ratio) is 1))....

example 1-2

[0062] Take 30 grams of the HG1 solution obtained in Example 1-1, add 15 grams of methyl MQ silicone resin (M / Q=0.7, Shandong Dayi Chemical Co., Ltd.), 12.5 grams of cyclohexane, 38 grams of No. 120 solvent oil, six Methyldisilazane 4.5g stir well at room temperature, then press 1.0ml / 25cm 2 The amount of the coating was applied to the specified flat ceramic tile and glass surface, and the hardness and antifouling of the coating film were observed after drying and curing at room temperature for 7 days. See test results figure 1 and Table 1.

example 1-3

[0064] Take 20 grams of the HG1 solution obtained in Example 1-1, add 20 grams of methyl MQ silicone resin (M / Q=0.7, Shandong Dayi Chemical Co., Ltd.), 10 grams of cyclohexane, 47 grams of No. 120 solvent oil, six Methyldisilazane 3g, stir well at room temperature, then press 1.0ml / 25cm 2 The amount of the coating was applied to the specified flat ceramic tile and glass surface, and the hardness and antifouling of the coating film were observed after drying and curing at room temperature for 7 days. See test results figure 1 and Table 1.

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Abstract

The invention discloses a nano-silver doped silicone resin-based antibacterial and antifouling agent as well as a preparation method and application thereof. The antifouling agent of the present invention is configured by nano-silver dispersion liquid and the following components with a total mass fraction of 100%: active silicone resin 5-50%, MQ silicone resin 2-20%, N-containing organic silicon 2 ~ 20%, organic solvent 20 ~ 80%, wherein, the silver content is 60 ~ 1000ppm of the total solid amount of the antifouling agent, and the silver particle size range is 3 ~ 30nm. The antifouling agent of the present invention is stable, can be cured at room temperature, is convenient to be applied to various substrates, and is cured to obtain a surface with excellent antibacterial and antifouling properties, good antibacterial durability, and high hardness of the coating film.

Description

technical field [0001] The invention relates to the technical field of nano-composite polymer materials, in particular to a nano-silver-doped silicone resin-based antibacterial and antifouling agent and a preparation method and application thereof. Background technique [0002] Environment and health are the themes of human beings in the 21st century, and the development of materials that are beneficial to the environment and health will make a huge contribution to improving the living environment of human beings and improving the level of human health. In addition to the air, water, and earth environment, the ecological environment of human life also includes the microbial environment, but the hidden dangers and threats to human health caused by microorganisms, especially pathogenic microorganisms, cannot be ignored. According to statistics from the World Health Organization, among the deaths caused by sudden infectious diseases from 1900 to 2008, bacterial infections cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D183/05C09D5/16
CPCC09D183/04C09D5/1618C09D5/1625C09D5/1675C08L2205/025C08K2003/0806C08K2201/011C08L83/04C08K3/08
Inventor 黄月文王斌宋斌
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI