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What happens to the epoxy board in a high temperature environment?

Although epoxy boards have high temperature resistance, everything has certain limitations. What happens to the epoxy board when it exceeds this temperature or is exposed to high temperatures for a long time? I summarize the following points.

fr4 epoxy board

(1) Layering. The delamination of the sheet will be a great damage to the appearance of the sheet.
(2) Deformation. Bending, shrinking, and reduced toughness often occur. The credibility of the performance of the epoxy board is greatly reduced, which in turn affects the reputation of the board.
(3) Whitish. Color is the most intuitive manifestation of damage to the board. The color fades and there are many spots.
(4) Cracking. Small cracks will appear at the beginning, which is a great discount for the insulation and high temperature resistance of the board.

The above is a simple enumeration of the occurrence of an epoxy board under high temperature conditions. Of course it is not very comprehensive. If you have more insights? You can leave a message on the website and let us make progress together.

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