Glue for 300-400C MCH heater?
Vitaly wrote 10/17/2019 at 04:43 • 0 pointsI'd like to "improve" MCH heater (50*50*1.5mm) for DIY reflower: add panasonic PGS on top side and aluminium foil on bottom side. That requires glue, operating at least on 300C, ideally up to 400C. Also, this glue should dry without air access and be easily available worldwide (ideally - at ebay/aliexpress).
Could you advice something suitable? Note, i know about RTV-1 silicones, those need air access to dry. The same with popular cements for car's smoke system. It would be nice to get something 2-components or temperature-activated, liquid enough for thin layer.
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RTV-1 silicone and furnace/exhaust cement technically doesn't need 'air' to dry. It just needs moisture (which is usually provided by the air).
With materials like ceramic I have infused the surface with water prior to the application of a moisture cure cement and they will subsequently cure *without* exposure to air.
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Sure, my description was very simplified, we talk about moisture. It should somehow "come from" if not enough, or "come out" if too much. When glue layer is fat, or glued materials are permeable for air - no problem. But it's not my case. I'd like use very thin glue layer and ceramic/alu/pgs.
Could you share your experience about manual surface wash? How critical are those RTV & cements to water amount? Can this process be repeated by anyone or require experience for proper water doses? I design reflower for hobbysts, and can not expect everyone interested to be "pro".
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