The characteristics of PCB halogen free proofing of PCB board Poly (ding circuit technology PCB factory

by:Rocket PCB     2020-04-03
PCB characteristics of halogen free proofing of PCB board, PCB board factory very much so many plates is not commonly used, but is not required, but some finished product have some special plate to achieve the function of its products and the use of the environment. Today by PCB PCB board factory: ( 火箭PCB解决方案有限公司) To introduce the about: the characteristics of the PCB no halogen board. What is no halogen PCB circuit board: board? Halogen free sheet is in accordance with the JPCA - ES- 01 - Chlorine (2003 standard: C1) , bromide ( Br) Less than zero, respectively. 09%Wt( Weight ratio) The copper clad, at the same time, the CI + 0 or less total Br. 15% [ 1500 ppm) 。 For now, most of the halogen free PCB board are mainly composed of phosphorus and phosphorus nitrogen system. Phosphorus resin during combustion and thermal decomposition to generate partial poly phosphate, extremely strong water, make polymer resin surface coking membrane formation, insulated resin burning surface is exposed to air, make the fire flame retardant effect. Polymer resin containing phosphorus compounds, produced in non-combustible gas combustion, assist flame retardant resin system. The characteristics of no halogen PCB board 1, insulation materials due to the use of P or N to replace halogen atoms and to a certain extent reduce the epoxy resin molecular bond segment polarity, thus improve the quality and the insulation resistance of the wear ability. 2, the material of water imbibition no halogen PCB board as a result of the nitrogen and phosphorus is epoxy resin of N and P in fox for electronic halogen relatively less, with the probability of the water hydrogen atoms to form hydrogen bonds than halogen material, and the absorbent material is lower than conventional halogen flame retarding material. For plate, low water absorption to enhance the reliability and stability of the material has a certain impact. 3, the material thermal stability without halogen PCB plank is greater than the content of nitrogen and phosphorus in ordinary phosphorus-containing material halogen content, molecular weight and its monomer as well as Tg values are increased. In the case of heat, its molecular motor ability will be lower than the conventional epoxy resin, and halogen free material thermal expansion coefficient is relatively small. Relative to the sheet containing halogen, plank has more advantages, zero halogen halogen free board replace halogen plank is the trend of The Times. On the world at present the halogen-free, solder resist ink is introduced also has a lot of kinds, its performance and the ordinary liquid photosensitive ink were similar, also on the specific operation with ordinary ink basic about the same. No halogen PCB board with low water absorption and adapt to the requirements of environmental protection, also in other performance can meet the quality requirements of the PCB, so halogen-free PCB demand is more and more big. Rocket PCB Solution co Ltd is a professional: PCB manufacture manufacturer, to provide you with: PCB proofing, batch plate, 1 - 34 layer PCB board, high TG board, impedance board, HDI board, Rogers plate, microwave plate, radio frequency (rf) board, LeiDaBan, thick copper foil board, such as PCB manufacturing production of various kinds of technology and material. Welcome to consult customer service for more details.
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