Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of photocuring antibacterial silicon dioxide coating

A silica and light-curing technology, used in textiles and papermaking, etc., can solve the problem that the antibacterial coating cannot take into account the antibacterial effect, wear resistance, heat resistance, etc., and achieve the effect of strong antibacterial effect.

Active Publication Date: 2022-04-19
WUHAN TEXTILE UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method and application of a light-cured antibacterial silica coating to solve the problems that the existing antibacterial coating cannot take into account the antibacterial effect and wear resistance and heat resistance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of photocuring antibacterial silicon dioxide coating
  • Preparation method and application of photocuring antibacterial silicon dioxide coating
  • Preparation method and application of photocuring antibacterial silicon dioxide coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The invention provides a kind of preparation method of light-cured antibacterial silicon dioxide coating, comprises the following steps:

[0031] S1. Preparation of antibacterial silica:

[0032] Add 3-5g of mesoporous silica into 1L of silane coupling agent mixture, vibrate ultrasonically for 8-12h, then perform suction filtration, washing, and drying to make the silica bond with the silane coupling agent through chemical bonds combine.

[0033] The above-mentioned dried substance is added to an aqueous solution of 8wt%-12wt% polyhexamethyleneguanidine hydrochloride (PHMG), mechanically stirred for 8-12h, and then sucked again, washed and dried to obtain the antibacterial bismuth silicon oxide.

[0034] The process uses mesoporous silica, which utilizes the ultra-high specific surface area (compared to nano-silica) and regular pore structure of mesoporous silica, so that it has more binding sites with silane coupling agent, It can improve the dispersion uniformity o...

Embodiment 1

[0054] A preparation method for light-cured antibacterial silicon dioxide coating, comprising the following steps:

[0055] S1. Preparation of antibacterial silica:

[0056] Add 4g of mesoporous silica into 1L of KBM-403 silane coupling agent mixture, vibrate ultrasonically for 10h, then perform suction filtration, washing, and drying to make the silica bond with the silane coupling agent through chemical bonds .

[0057] Add the above-mentioned dried substance into 10wt% polyhexamethyleneguanidine hydrochloride (PHMG) aqueous solution, mechanically stir for 10 hours, filter again with suction, wash and dry to obtain antibacterial silicon dioxide.

[0058] Wherein, the content of acetic acid in 1L of silane coupling agent mixture is 2wt%, and the content of silane coupling agent is 6wt%.

[0059] S2. Preparation of photosensitive antibacterial silica:

[0060] The antibacterial silicon dioxide that step S1 obtains is added in the ethanol dispersion liquid, and 3-mercaptopro...

Embodiment 2-3

[0070] A kind of preparation method of light curing antibacterial silicon dioxide coating, compared with embodiment 1, difference is that, in step S1, KBM-403 silane coupling agent and polyhexamethyleneguanidine hydrochloride (PHMG ) in different amounts, others are roughly the same as in Example 1, and will not be repeated here.

[0071] The light-cured antibacterial silicon dioxide coating prepared in embodiment 1-3 is coated on the textile of polyurethane fiber and carries out performance test, and the result is as shown in table 1, and bactericidal rate refers to the bactericidal rate to Staphylococcus aureus:

[0072] The performance test of the light-cured antibacterial silica coating prepared by the embodiment 1-3 of table 1

[0073]

[0074] It can be seen from Table 1 that with the increase of the concentration of KBM-403 and PHMG, the antibacterial effect of the photocurable antibacterial silica coating first increases and then basically tends to be stable, while ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thermal decomposition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method and application of a light-cured antibacterial silicon dioxide coating, and the preparation method comprises the following steps: adding silicon dioxide into a silane coupling agent mixed solution, carrying out ultrasonic vibration, suction filtration and washing, and then adding into an aqueous solution of 8wt%-12wt% of polyhexamethylene guanidine hydrochloride for reaction to obtain antibacterial silicon dioxide; adding the obtained antibacterial silicon dioxide into ethanol dispersion liquid, adding a sulfydryl-containing silane coupling agent into the ethanol dispersion liquid, and performing heating reaction to obtain photosensitive antibacterial silicon dioxide; stirring and mixing the obtained photosensitive antibacterial silicon dioxide with aliphatic polyurethane acrylate, tripropylene glycol diallyl ester and a photoinitiator at a high speed, and performing illumination to obtain the photocuring antibacterial silicon dioxide coating. By controlling the content of the antibacterial component coupled on the mesoporous silica, the residual reaction sites and steric hindrance on the mesoporous silica are controlled, so that the prepared photocuring antibacterial silica coating is high in antibacterial property and low in loss rate.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to a preparation method and application of a light-cured antibacterial silicon dioxide coating. Background technique [0002] At present, various pathogenic bacteria have caused great harm to human survival and development. Free bacteria are easy to deposit on the surface of materials, and after long-term reproduction, bacterial biofilms will be formed on the surface of materials. The existence of bacterial biofilm has caused great troubles to public health facilities, medical facilities, food packaging and textile clothing and other fields. [0003] In order to solve the problem of bacterial biofilm on the surface of materials, a coating that prevents bacterial adhesion and has antibacterial function has been extensively studied. At present, antibacterial coatings can be divided into three types according to the antibacterial mechanism, namely: anti-adhesion type,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0061D06N3/0059D06N3/0063D06N2209/1671D06N2209/1685D06N2209/06Y02A50/30
Inventor 王栋赵青华陈卓梅涛宋银红尤海宁刘轲
Owner WUHAN TEXTILE UNIV