Paint Science: Three minutes to take you to understand the future of the inescapable conductive silver pulp

With the recent momentum of new infrastructure in the seven core industries headed by5G infrastructure, the new infrastructure will bring a surge in the number of 5G base station construction, 5G base station key components - 5G ceramic media filter is also expected to usher in a major outbreakThe conductive silver pulp is the key material of 5G ceramic media filter, and its quality directly affects the performance and service life of the deviceAccording to research institutions, the number of global base stations in the 5G era is nearly 8.5 million, according to each base station 3 antennas, each antenna 64 filter estimates, the demand for media filters 1.6 billion, ceramic media filter global market capacity of about 56.6 billion yuanThus, the market prospect of conductive silver pulp can not be underestimatedconductive silver pulp is simply printed on the substrate, so that it has conduction current and eliminate the accumulation of static charge capacity of silver pulp, generally printed in plastics, glass, ceramics and cardboard and other non-conductive substratesConductive silver pulp is composed of conductive silver powder, adhesive, solvent and performance-improving trace additives, can be divided into polymer conductive silver pulp and sintered conductive silver pulp, the difference between the two is the bonding phase is differentSintered conductive silver pulp uses low melting point glass powder as a bonding phase, burning in a film above500 degrees Cconductive silver pulp products set metallurgy, chemical, electronic technology in one, is a high-tech electronic functional materials, mainly used in the production of thick film integrated circuits, resistors, resistance networks, capacitors,MLCC, conductive inks, solar cell electrodes, LEDs, printing and high-resolution conductors, film switches/flexible circuits, conductive adhesives, sensitive components and other electronic componentsmetal silver powder is the main component of conductive silver pulp, and its conductive properties are mainly realized by silver powderThe content of silver powder in the slurry directly affects the conductive propertiesIn a sense, the high content of silver is beneficial to improve its conductivity, but when its content exceeds the critical volume concentration, its conductivity can not be improvedThe content of silver in silver pulp is generally suitable in60-70%Because silver is a precious metal, easy to be restored and returned to a monolith state, so liquid phase reduction method is currently the main method of preparing silver powder the size and shape of silver particles are closely related to the conductivity of silver pulp The conductive particles used to make conductive printing materials are good in flaky, flat, needle-like, especially flaky particles Round particles are point-to-point contact, and flaky particles can form surface-to-face contact, after printing, flaky particles in a certain thickness of each other in the fish scale overlap, thus showing better conductivity In the same ratio, the same volume, the globular particle resistance is 10-2, and the flaky particles can reach 10-4 the gap between domestic silver conductive slurry in conductive properties and the stability of the slurry and imported products, so that a considerable part of the conductive slurry is still dependent on imports, which greatly reduces the market efficiency of domestic enterprises in producing 5G ceramic media filters How to produce conductive slurry with good stability has become the primary problem of domestic enterprises producing silver conductive slurry In the formulation material, which affects the conductivity and stability of the slurry, the adhesive as a film-forming substance plays a key role adhesives are essential film-forming substances in conductive silver pulp In conductive silver pulp, conductive silver particles are dispersed in the adhesive Before printing the graphics, relying on the solvent-dissolved adhesive to make the silver pulp composition has a certain viscosity of the printing material, complete the screen printing form a graphic transfer; It can be seen that the material selection as an adhesive is good or bad, directly affect the final coating, silver particles and particles, silver particles and substrates can form a stable combination Editor: Shenzhen Coatings Technology Institute statement: This number of reprints, sharing, statements, views to maintain neutral, the purpose is only in the industry exchange, copyright is owned by the original author If involved in copyright and intellectual property rights and other infringement issues, please contact the background of this number, immediately delete the content processing