Easily printed PCB (printed circuit board) silver paste and preparation method thereof
A PCB circuit board and silver paste technology, which is applied in the manufacture of printed circuit components, circuits, cables/conductors, etc., can solve the problems of scrapped conductive lines, falling off of conductive lines, melting of glass phase, etc., and achieves not easy to fall off, continuous lines, The effect of saving consumption
Inactive Publication Date: 2015-09-30
TONGLING HONGZHENG NETWORK SCI & TECH CO LTD
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The invention relates to an easily printed PCB (printed circuit board) silver paste, made with, by weight, 12 to 16 parts of glass frit, 7 to 9 parts of thermosetting acrylic resin, 2 to 4 parts of hydroxymethyl cellulose, 3 to 5 parts of butyl acetate, 6 to 8 parts of tributyl citrate, 0.4 to 0.7 part of oxidized castor oil, 1 to 2 parts of N-phenyl-2-naphthylamine, 0.2 to 0.5 part of cobalt acetate, 1 to 2 parts of anhydrous lanolin, 5 to 7 parts of ethylene glycol monobutyl ether, 5 to 7 parts of xylene, 7 to 10 parts of 1 to 5 nm copper powder, 55 to 60 parts of 1 to 5 micrometers silver powder, 2 to 4 parts of silver-coated TiO2 microspheres, and 4 to 7 parts of silver-coated SiO2 microspheres. The silver paste has good dispersity and levelling property and ease of printing, the printed circuit is continuous and clear, and no pores and cracks occur after drying; with the use of the low-melting glass frit, the adhesion to PCB is good, and shedding rarely occurs; with the use of the conductive micro-powder such as copper powder, consumption of the silver powder is reduced without affecting the conductivity.
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