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Adhesive Academy: Low Viscosity Systems 201

Here at Master Bond, school is back in session and the subject in this video is low viscosity. Dr. B explains various applications that benefit from adhesive systems with a flowable consistency such as flip chip encapsulation and porosity sealing.

Topics:
Materials

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    Transcript

    00:00:00 [Music] good morning Dr B we've been getting a lot of inquiries for adhesive bonding in which viscosity is the key criteria in the selection process can we review some of them now sure Sam what do you have the first call is from an electronic manufacturing company about a flip chip encapsulation they need to fill the gap between the chip solder balls and the

    00:00:33 circuit board based on the geometry of the gaps along with the configuration of the parts I think a product with low viscosity offering good flow characteristics might be useful what would you recommend I agree with you for such applications dispensing needs to occur from the edge of the chip for most effective flow that's why low viscosity and surface wetting ability of the

    00:00:55 compound are essential for protecting the space between the Dy substrate and interconnect BMP s would you recommend a one or two component system either one might work well depending on thermal stability of the substrates if heat curing is possible the addition of heat can also help facilitate flow properties even further we also got a call from one of our

    00:01:17 current customers they're in need of a compound for a paracity sealing application what do you suggest what are the details of their application their sealing steel parts that require protection against water oils and high pressure we usually recommend oneart epoxy systems for impregnation do you think that a low viscosity two component epoxy would be suitable for paracity

    00:01:41 sealing as well yes two-part systems with extremely low viscosity and long working life are available for such applications however one component heat curing epoxies offer many advantages as they require no mixing and have unlimited pot life at room temperature for efficient void filling of mic ACR porosity the substrates can be dropped in a tank for vacuum

    00:02:04 impregnation wow Dr B that's some great Insight now I can recommend the most suitable one-part system for their [Music] application