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

Manufacturing method of flake aluminum silver powder used for electrostatic spraying of molding powder

A technology of electrostatic spraying and manufacturing method, which is applied in the direction of powder coating, fibrous filler, dyeing and low-molecular organic compound treatment, etc., which can solve the problems of long production cycle, unfavorable dispersion and adsorption, large amount of solvent usage, etc., and achieve powder coating rate High, improve white brightness and hiding power, improve the effect of hydrophobicity

Inactive Publication Date: 2018-05-18
HEFEI SUNRISE PIGMENTS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has one more washing modification process, long production cycle, and large amount of solvent used. Although the coated aluminum sheet has been aged, it cannot completely hydrolyze the tetraethyl orthosilicate and the silane coupling agent, and the remaining Ethyl orthosilicate and silane coupling agent will continue to be hydrolyzed and cross-linked to make the aluminum flakes adsorb and gather together to form agglomerated small particles, which will bring problems to the use of aluminum flakes. The solid content of the finished product is about 60wt%. It is not conducive to dispersion and adsorption in powder coatings; and the aluminum flakes prepared by the above two methods are not suitable for powder electrostatic spraying

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for manufacturing flake aluminum silver powder for plastic powder electrostatic spraying of the present embodiment comprises the following steps:

[0025] (1), in the dispersing tank, disperse 100kg oily aluminum silver paste finished product in 180kg ethanol solvent;

[0026] (2) Add 5kg of water, keep the temperature at 40°C, fully disperse, and adjust the pH to 8-9;

[0027] (3), 5 kg of tetraethyl orthosilicate and 3 kg of coupling agent 3-aminopropyltrimethoxysilane were added dropwise, and the time for adding was 2 h;

[0028] (4), aging for 3h after the reaction, cooling and pressure filtration to obtain a filter cake, and solvent refining;

[0029] (5), the filter cake after press filtration is put into desiccator and is dried, obtains the aluminum-silver powder with solid content more than 98%;

[0030] (6), screening, barreling to obtain the finished product.

[0031] in,

[0032] In step (2), the pH value of the solvent is adjusted using ethylene...

Embodiment 2

[0036] A method for manufacturing flake aluminum silver powder for plastic powder electrostatic spraying of the present embodiment comprises the following steps:

[0037] (1) In the dispersing tank, disperse 100kg of oily aluminum silver paste finished product in 180kg of isopropanol solvent;

[0038] (2) Add 5kg of water, keep the temperature at 40°C, fully disperse, and adjust the pH to 8-9;

[0039] (3), 5 kg of tetraethyl orthosilicate and 3 kg of coupling agent 3-aminopropyltrimethoxysilane are added dropwise, and the time for adding drops is 2 h; (4), after the reaction, age for 3 h, cool and press filter to obtain a filter cake , solvent refining;

[0040] (5), the filter cake after press filtration is put into desiccator and is dried, obtains the aluminum-silver powder with solid content more than 98%;

[0041] (6), screening, barreling to obtain the finished product.

[0042] in,

[0043] In step (2), the pH value of the solvent is adjusted using ethylenediamine. ...

Embodiment 3

[0047] A method for manufacturing flake aluminum silver powder for plastic powder electrostatic spraying of the present embodiment comprises the following steps:

[0048] (1), in the dispersing tank, disperse 100kg oily aluminum silver paste finished product in 180kg ethanol solvent;

[0049] (2) Add 5kg of water, keep the temperature at 40°C, fully disperse, and adjust the pH to 8-9;

[0050] (3), 5 kg of ethyl orthosilicate and 3 kg of coupling agent vinyltrimethoxysilane were added dropwise, and the dropping time was 2 h;

[0051] (4), aging for 3h after the reaction, cooling and pressure filtration to obtain a filter cake, and solvent refining;

[0052] (5), the filter cake after press filtration is put into desiccator and is dried, obtains the aluminum-silver powder with solid content more than 98%;

[0053] (6), screening, barreling to obtain the finished product.

[0054] in,

[0055] In step (2), the pH value of the solvent is adjusted using ethylenediamine.

[00...

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 a manufacturing method of a flake aluminum silver powder used for electrostatic spraying of molding powder, and belongs to the technical field of aluminum silver powders. The manufacturing method comprises the following steps: (1) dispersing a part of oil aluminum silver paste finished product or filter cake into 1.5-2 parts of alcohol ester solvent in a dispersing cylinder; (2) adding 0.05 part of water, keeping the constant temperature of 40 DEG C, fully dispersing, and regulating the pH to 8-9; (3) dropwise adding 0.05 part of tetraethoxysilane and 0.03 part of a coupling agent for 2-3 hours; (4) ageing for 3 hours after reaction, then cooling, conducting filter pressing, and recycling the solvent; (5) drying the filter cake subjected to the filter pressing, andobtaining the aluminum silver powder with the solid content being 98% or higher; (6) screening and barreling to obtain a finished product. The prepared aluminum silver powder is higher in white brightness and flash point, has better compatibility with a molding powder resin, is high in coating rate, and is widely applied to various powder coating systems.

Description

technical field [0001] The invention relates to the technical field of aluminum-silver powder, in particular to a method for manufacturing flake-shaped aluminum-silver powder for electrostatic spraying of plastic powder. Background technique [0002] With the development of society, people's aesthetic concept is getting higher and higher, and the requirements for products are getting higher and higher. The surface of the aluminum sheet is smooth and flat, the particle size distribution is concentrated, the shape is regular, and it has excellent light reflection ability and metallic luster. The paint film has obvious "angle-dependent" effect and flickering effect, and the decorative effect is very gorgeous and beautiful. With the continuous improvement and optimization of the production process of aluminum-silver paste and the continuous reduction of production costs, the price is becoming more and more acceptable to consumers. Therefore, aluminum-silver paste has become the ...

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): C09C1/64C09C3/08C09C3/12C09D5/03C09D7/62
Inventor 谷圣军董前年李凡疏敏周辉朱双单
Owner HEFEI SUNRISE PIGMENTS