How do we distinguish the quality of epoxy board?

Epoxy board is a laminated board, mainly made of epoxy resin adhesive and paper, cotton and other substrates. There are many types of epoxy boards, including 3240 epoxy board, G11 epoxy board, G10 epoxy board, FR4 epoxy board, etc. Their performance is similar, but the details are different. Now epoxy board can be said to be an indispensable part in electronic products. It can be used as plywood for molds, insulating components in electronic products, etc. Some special epoxy boards can also be processed into light and thin mobile phone cases. Because it is a very important part, it is inevitable that there are some defective products on the market. So how do you look at the quality of the epoxy board? The first thing to look at is the appearance of the epoxy board. The surface of the epoxy board should be smooth and flat. Yes, dents, scratches or other marks are defective products. Similarly, the cross-cut sides should be neat, and some rough sides will have burrs and pricks. Epoxy boards are colored, including aqua, yellow, black, white, etc. The epoxy board should look uniform and full in color. Epoxy board has high strength and good toughness. When testing its performance, you can try to bend it or let it be stressed. It is fragile and easy to be broken. It must be of poor quality. The epoxy board is waterproof and resistant to chemical corrosion, and can work normally in a humid environment. So this point can also be used to test its performance. As an insulating material, the insulation performance must be good and non-conductive, even in harsh environments.