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Epoxy board is a laminated board, mainly made of epoxy resin adhesive and paper, cotton and other substrates. There are many types of epoxy board, including 3240 epoxy board, G11 epoxy board, G10 epoxy board, FR-4 epoxy board, etc., their performance is similar, and there are differences in details. Now the epoxy board can be said to be an indispensable part in electronic products. It can be used as a thermal insulation plywood for molds and insulating members in electronic products. Some special epoxy boards can also be processed into light and thin mobile phone skin set. Because it is a very important component, it is inevitable that there are some defective products on the market, so it is particularly important to learn how to quickly see the quality of the epoxy board.

1) Check the appearance of the epoxy board. The surface of the epoxy board should be smooth and flat. Any dents, scratches or other marks are inferior products.

2) Check whether the side of the cross-cut is neat, and some rough-processed sides will have burrs. Epoxy boards are colored, including aqua, yellow, black, white, etc. The epoxy boards should look even and full in color.

3) Verify the performance of the epoxy board. When testing its performance, you can try to bend it or force it. The fragile and easily broken must be of poor quality;

4) Check the water resistance and corrosion resistance of the epoxy board, whether it can work normally in a humid environment, this takes a certain time to confirm, as an insulating material, the insulation performance must be good, even in harsh environments Conductive.