Epoxy glass FR4 green sheet g10 g11: is made of glass fiber cloth bonded with epoxy resin by heating and pressuriz...
Epoxy glass FR4 green sheet g10 g11: is made of glass fiber cloth bonded with epoxy resin by heating and pressurizing. It has high mechanical properties at medium temperature and stable electrical properties under high humidity. Epoxy glass FR4 green sheet g10 g11 is suitable for machinery, electrical and electronic components with high insulation structure, with high mechanical and dielectric properties good heat resistance and moisture resistance. Heat resisting class F (155 degrees).
Specification thickness: 0.5 ~ 100mm
The epoxy sheet may be deformed at a high temperature of 180℃. Generally, it will not be heated together with other metals, which may cause deformation of the metal plate. So how do we know if the epoxy sheet has achieved the required temperature tolerance? There are several phenomena.
The color of epoxy sheet is usually yellow, aqua green, black. It can be said that the change in color directly reflects the defense of the internal performance of the epoxy plate. If the epoxy sheet is not heated to the specified temperature during the test, it is whitened gradually. This is a bad phenomenon, we can say that the quality of the product is questionable.
As we know, epoxy glass FR4 green sheet g10 g11 belongs to composite material, which is laminated structure, with one layer of glass fiber cloth and one layer of resin. If the temperature is too high, the bonding force of resin will be destroyed, leading to lamination. Therefore, when the epoxy glass FR4 green sheet g10 g11 is stratified during heating to the specified temperature, it means that the epoxy sheet does not reach the specified temperature and does not meet the requirements.
When the epoxy glass FR4 green sheet g10 g11 is heated to a certain temperature, deformation occurs: it mainly includes bending, shrinking, expanding and warping, etc. Once the temperature goes out of range and the internal stress changes, the shape of the epoxy sheet will change and cannot be restored to its original shape.
Run heat test on the epoxy sheet. In the process of heating to the specified temperature, cracks appear on the surface of epoxy glass FR4 green sheet g10 g11, and the thickness gradually deepens. If the temperature is not lowered in time, it will crack directly. This phenomenon can also fully explain that the epoxy plate did not reach the specified temperature, which is a substandard product.
If the above four conditions do not occur within the normal range, it is basically concluded that the epoxy glass FR4 green sheet g10 g11 has reached the temperature requirement.
In today's market with transparent information, no matter which kinds of epoxy sheets are selected, reliable manufacturers should be selected. When choosing products, quality and brand should be paid more attention to than price.
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