What is the heat resistance of fr4 fiberglass board?

FR4 fiberglass board is a high performance composite material consisting of glass fiber cloth and epoxy resin. Its heat resistance is one of its important properties, the heat resistance of FR4 fiberglass board will be discussed in detail below.

The material structure and manufacturing process of FR4 fiberglass board make it have high heat resistance. Fiberglass cloth is made of amorphous fiberglass, which has strong high temperature resistance and can withstand temperatures of up to 600°C. Epoxy resin is a very excellent heat-resistant material with a small coefficient of thermal expansion, good thermal stability, and can withstand temperatures up to 180°C. The composite use of glass fiber cloth and epoxy resin can form FR4 glass fiber board with high temperature resistance, chemical corrosion resistance, wear resistance and other properties.

The heat resistance of FR4 fiberglass board mainly has the following aspects:

1. Dimensional stability at high temperatures

FR4 fiberglass board has good dimensional stability, that is, it is not easy to deform, shrink or expand at high temperatures. This is due to the uniform orientation of glass fiber cloth and epoxy resin, stable properties, and small thermal expansion coefficient. Under high temperature environment, the mechanical properties, insulation properties and chemical resistance of FR4 fiberglass board can be effectively guaranteed.

2. Mechanical properties at high temperatures

The glass fiber cloth of FR4 fiberglass board has certain flexibility and tensile strength, and can withstand high forces and pressures. In the high temperature environment, because its epoxy resin has good high temperature resistance, the mechanical properties of FR4 fiberglass board can still be maintained at a certain level, such as bending strength, tensile strength and so on.

3. Insulation performance at high temperatures

FR4 fiberglass board has good insulation properties and can maintain good insulation properties in high temperature environments. The main reason is that its epoxy resin material has high insulation strength and electrical breakdown resistance. This characteristic makes FR4 fiberglass board an excellent insulating material, widely used in electronics, communications, automotive, aviation and other fields.

4. Chemical resistance at high temperatures

FR4 fiberglass board has good chemical resistance and is not easy to be eroded and corroded by chemicals in high temperature environments. The main reason is that its epoxy resin has high chemical properties such as acid resistance, alkali resistance and oil resistance. This characteristic makes FR4 fiberglass board widely used in automobile, aircraft, ship and other fields.

In short, the material structure and manufacturing process of FR4 fiberglass board make it have high heat resistance. In high temperature environment, its dimensional stability, mechanical properties, insulation properties, chemical corrosion resistance can be effectively guaranteed. Therefore, FR4 fiberglass board has broad application prospects in electronics, communications, automotive, aviation and other fields.