Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antibacterial waterborne aluminum pigment and preparation method thereof

An aluminum pigment, water-based technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve problems such as hidden dangers of paint storage and use, and reduction of aluminum pigment gloss

Active Publication Date: 2019-05-14
BEIJING UNIV OF CHEM TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that traditional solvent-based coatings emit a large amount of volatile organic compounds (VOCs) during the production and use process, according to the regulations issued by the state at the beginning of 2017 on the VOC content of coating manufacturers and construction parties It is difficult for traditional solvent-based coatings to meet the relevant regulations on the collection of consumption tax when the consumption tax is higher than 420 g / L. Therefore, water-based coatings are bound to become the development trend in the coatings field.
When water-based paint is used in the automotive field, in order to increase the vividness of the paint, aluminum pigments will be mixed into the metallic paint. Since the solvent of water-based paint is water, it will corrode with active aluminum and generate hydrogen, while reducing the aluminum pigment. The glossiness of the pigment brings hidden dangers to the storage and use of the paint

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
  • Antibacterial waterborne aluminum pigment and preparation method thereof
  • Antibacterial waterborne aluminum pigment and preparation method thereof
  • Antibacterial waterborne aluminum pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] (1) Phosphoric acid diluted with isopropanol was stirred at 30°C for 0.5h, filtered and washed to obtain washed solid aluminum powder;

[0083] (2) Disperse aluminum powder in isopropanol to obtain mixed solution A, wherein the mass ratio of isopropanol to aluminum powder is 60. Place sodium molybdate in a beaker, add deionized water and stir to dissolve it, and add it dropwise to mixed solution A. The mass ratio of sodium molybdate, ion-free water and aluminum powder is 0.03:3:1, at 50℃. After reacting for 4 hours, centrifuge to obtain a solid mixture;

[0084] (3) Mix the solid mixture obtained in (2) with deionized water at a mass ratio of 1:5. After stirring and dispersing, add it dropwise to the quaternary ammonium salt silane coupling agent with a certain chain length, wherein the quaternary ammonium salt Silane coupling agent n=2; R=R 1 =CH 3 , R 2 =H, the mass ratio with the solid mixture and ammonia in (2) is 6:1:0.1, and after reacting at 35°C for 20 hours, the so...

Embodiment 2

[0087] (1) Phosphoric acid diluted with n-butanol was stirred for 0.5h at 20°C, filtered and washed to obtain washed solid aluminum powder;

[0088] (2) Disperse the above-mentioned aluminum powder in n-butanol to obtain mixed solution A, wherein the mass ratio of n-butanol to aluminum powder is 35. Place the sodium polyphosphate in a beaker, add deionized water and stir to dissolve it, and add it dropwise to the mixture A. The mass ratio of sodium polyphosphate, deionized water, and aluminum powder is 0.35:2:1, at 55 After reacting for 2 hours at ℃, the solid mixture was obtained by centrifugal separation;

[0089] (3) Mix the solid mixture obtained in (2) with deionized water at a mass ratio of 1:4. After stirring and dispersing, add it dropwise to the quaternary ammonium salt silane coupling agent with a certain chain length. Silane coupling agent n=0; R=C 2 H 5 ,R1=CH 3 ,R 2 The mass ratio of =H to the solid mixture in (2) and ammonia water is 4:1:0.3. After reacting for 24 ho...

Embodiment 3

[0092] (1) Phosphoric acid diluted with butanediol was stirred at 40°C for 0.5h, filtered and washed to obtain washed solid aluminum powder;

[0093] (2) Disperse the above aluminum powder in butanediol to obtain mixed solution A, wherein the mass ratio of butanediol to aluminum powder is 55. Place the sodium polyphosphate in a beaker, add deionized water and stir to dissolve it, and add it dropwise to the mixture A. The mass ratio of sodium polyphosphate to deionized water aluminum powder is 0.35:5:1 at 55°C After reacting for 4 hours under the conditions, the solid mixture was obtained by centrifugal separation;

[0094] (3) Mix the solid mixture obtained in (2) with deionized water at a mass ratio of 1:5. After stirring and dispersing, add it dropwise to the quaternary ammonium salt silane coupling agent with a certain chain length, wherein the quaternary ammonium salt Silane coupling agent n=3; R=OH,R 1 =CH 3 , R 2 The mass ratio of =H to the solid mixture in (2) and formyl am...

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

No PUM Login to View More

Abstract

The invention discloses an antibacterial waterborne aluminum pigment and a preparation method thereof. The preparation method includes: A, washing the surface of aluminum powder, forming a passivatedwater-resistant layer on the surface of the aluminum powder, and forming an antibacterial layer on the surface of the aluminum powder; alternatively B, washing the surface of aluminum powder, and forming both a passivated water-resistant layer and an antibacterial layer on the surface of the aluminum powder. The preparation method specifically includes: (1) washing the surface of aluminum powder with organic solvent diluted phosphoric acid; (2) forming a passivated water-resistant layer on the surface of the aluminum powder through an inorganic salt or tetraethoxysilane; (3) forming an antibacterial layer through a quaternary ammonium salt silane coupling agent. The quaternary ammonium salt silane coupling agent utilized herein subjects the aluminum pigment to further covering modificationthrough hydrolysis; the quaternary ammonium salt terminal having antibacterial effect has good hydrophilicity; a carbon chain of suitable length enables the modified aluminum powder to be well compatible with water and gain certain water resistance; the waterborne aluminum pigment herein has good antibacterial property and water resistance.

Description

Technical field [0001] The present invention relates to the technical field of water-based pigments, and more specifically, to a method for preparing antibacterial water-based aluminum pigments and aluminum pigments. Background technique [0002] Aluminum pigments are widely used in coatings because of their metallic flashing effect and floppy color. However, because traditional solvent-based coatings emit a large amount of volatile organic compounds (VOC) during the production and use process, according to the national regulations on the VOC content of coating manufacturers and construction parties in early 2017 When the consumption tax is higher than 420 g / l, it is difficult for traditional solvent-based coatings to meet the relevant regulations. Therefore, water-based coatings are bound to become the development trend of the coatings field. When water-based coatings are used in the automotive field, in order to increase the distinctness of the paint, aluminum pigments are mix...

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
IPC IPC(8): C09C1/64C09C3/06C09C3/12C09C3/08
Inventor 史翎李雯琪张传敏
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com