Method for increasing bonding force between conductive body and non-conductive macromolecule dielectric layer in printed circuit board substrate
A printed circuit and conductor technology, which is applied in the secondary treatment of printed circuits, improvement of metal adhesion of insulating substrates, coatings, etc.
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[0067] With the development of electronic products in the direction of thinner and lighter, coupled with dense electronic circuits, the roughness of the inner metal plate, that is, the conductor, is reduced, which in turn leads to the reliability of the bonding force. On the other hand, halogen-free flame retardants gradually replace halogen flame retardants and become the main substrate of printed circuits. At present, non-conductive polymer dielectric layer materials commonly used in the electronics industry have FR-4, insulation, halogen-free, High Tg Features, mainly made of glass fiber and epoxy resin or phenol resin, such as polytetrafluoroethylene (PTFE), epoxy resin (EPOXY RESIN), polyimide (POLYIMIDE), Polycyanate resin (POLYCYANATE ESTER), butylene terephthalate resin (BUTADIENE TEREPHTHALATE RESIN) or a mixture of the above materials, etc. In order to improve the metal plate, that is, the conductor, the surface roughness and the bonding force, the present invention ...
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