Preparation method of inorganic-organic double-layer coated type aluminum paste

An aluminum-silver paste and aluminum-coated technology, which is applied in the treatment of dyed organosilicon compounds, dyed polymer organic compounds, coatings, etc. The problem is to achieve excellent acid and alkali corrosion resistance, maintain hiding power, and improve acid and alkali corrosion resistance and adhesion.

Inactive Publication Date: 2013-09-25
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention aims at the defect that the modified aluminum-silver paste in the prior art has poor acid and alkali corrosion resistance, is easily subjected to chemical corrosion, and causes the paint to fall off easily during use, and aims to provide a kind of aluminum alloy with excellent acid a

Method used

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  • Preparation method of inorganic-organic double-layer coated type aluminum paste
  • Preparation method of inorganic-organic double-layer coated type aluminum paste
  • Preparation method of inorganic-organic double-layer coated type aluminum paste

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Embodiment 1

[0032] Weigh 20g of aluminum silver paste with a solid content of 50-70% and add it to a mixture of 100mL isopropanol and 50mL water, stir and heat and control the temperature of the whole system at 60-70°C, under the catalytic action of 2.0mL ethylenediamine , drop 10g tetraethyl orthosilicate in 1 hour; after dropping, continue to react for 5 hours, cool, wash, and filter to obtain inorganic silica-coated aluminum-silver paste; Add 10g of inorganic silica-coated aluminum silver paste and 100mL of toluene to a 250mL round bottom flask with a funnel and a reflux condenser, and stir thoroughly for about 30 minutes; add 0.2g of methacryloxypropyltrimethoxysilane, and stir for 30 minutes; then add 10 mL of toluene solution dissolved with 0.2 g of azobisisobutyronitrile, and stir for 30 minutes; vacuumize the system and ventilate nitrogen, repeat three times, and keep a continuous nitrogen atmosphere protection throughout the reaction process; place the flask in Heat to 70°C in a ...

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Abstract

The invention discloses a preparation method of an inorganic-organic double-layer coated type aluminum paste. The method comprises the following steps of: dispersing the aluminum paste in an alcohol-water mixed solvent to obtain a mixture; dropwise adding tetraethoxysilane into the obtained mixture, stirring the resulting product for hydrolysis reaction, cooling the obtained product after the hydrolysis reaction is finished, washing and filtering hydrolyzed products to obtain an inorganic silicon dioxide coated aluminum paste, dispersing the inorganic silicon dioxide coated aluminum paste in a benzene solvent, sequentially adding an organic coupling agent and an azo initiator while stirring, then dropwise adding an organic polymerized monomer, carrying out polymerization reaction in the presence of an inert gas, after the dropwise addition of the organic polymerized monomer is finished, increasing the temperature for further carrying out polymerization reaction, cooling the obtained product after the polymerization reaction is finished, and washing and filtering polymerized products to obtain the inorganic-organic double-layer coated type aluminum paste. The aluminum paste prepared by adopting the method disclosed by the invention especially has acid and alkali corrosion resistance, in addition, can be well dispersed in an organic matrix, and has wide industrial application prospect.

Description

technical field [0001] The invention relates to a preparation method of an inorganic-organic double-layer coated aluminum-silver paste, which belongs to the field of paint modification. Background technique [0002] Aluminum silver paste is a mixed product with flake metal aluminum powder and organic solvent. Due to its special flake structure, aluminum silver paste has good covering properties, shielding properties, floating properties, and metallic luster properties. Widely used in modern paint and pigment industry. Most of its manufacturing methods use wet ball milling, adding mineral oil, 200# solvent oil and other organic solvents to the ball mill, the ball milling medium is steel balls of 1-5mm, the ball milling time is about 8-30 hours, and then sieved and filtered , and finally the filter cake is kneaded with an appropriate surface treatment agent and an organic solvent to obtain an aluminum silver paste product with a solid content of about 50-70%. The aluminum-si...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/12C09C3/10C08F112/08C08F120/14C08F122/14C08F2/44C09D7/12C09D17/00
Inventor 刘辉叶红齐崔欢庆王瑞萌邹鑫
Owner CENT SOUTH UNIV
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