Which is better, aqua green epoxy sheet or yellow epoxy sheet?

Epoxy sheet is a composite material made of epoxy resin bonded, heated and pressed. It has excellent insulation, mechanical strength and chemical resistance. ‌Epoxy sheet is usually made of multi-layer  fiber glass cloth impregnated with epoxy resin after lamination and  has high mechanical and dielectric properties, good heat and moisture resistance, and good machinability. It contains active epoxy groups, which can be crosslinked with a variety of curing agents to form an insoluble and non-melting three-way network structure of polymers. The epoxy sheet has high mechanical properties in the medium temperature environment, stable electrical properties in the high temperature environment, and has good moisture resistance and heat resistance.

Epoxy sheets are available in a variety of colors, such as red, yellow, green, blue, white, etc. Among them, aqua and yellow are two of the more common colors. Although they are both epoxy sheets, they have different ingredients and properties in the production process, so they are also different in use. So, which one is better, aqua or yellow? Let's analyze it from four aspects.

1. Environmental protection

Aqua green epoxy sheet is more environmentally friendly. The chemicals used in the production process of aqua green epoxy sheet are more environmentally friendly than yellow epoxy sheet. So aqua green epoxy sheets will not cause excessive pollution to the environment. Its color is closer to nature and conforms to the concept of environmental protection. At the same time, compliant aqua green epoxy sheet will reduce pollution to the environment during the production process, such as reducing the release of harmful substances such as VOC.

2. Performance and quality

Aqua green epoxy sheet (such as FR-4 model) usually has better performance. FR-4 epoxy sheet has the characteristics of high temperature resistance, chemical corrosion resistance, insulation, arc resistance, good mechanical processing performance, flame retardancy, etc. It can be used at a temperature of 150°C, and there is no need to worry about corrosion when encountering acid and alkali solutions. Yellow epoxy sheet (such as 3240 model) has slightly worse performance and is not flame retardant, but the price is cheaper.

3. Application scenarios

‌Due to its environmental friendliness and excellent physical properties, the aqua green epoxy sheet is particularly suitable for occasions with high environmental requirements. Such as FPC reinforcement board, PCB drilling pad, glass fiber meson, potentiometer carbon film printed glass fiber board, etc. 

Yellow epoxy sheet is known for its good cost performance. It is suitable for occasions where electrical performance requirements are not too high. For example, in some mechanical equipment, yellow epoxy sheet can be used as an insulator, support or protective part. In addition, yellow epoxy sheet is also often used to manufacture some low-cost electronic products or accessories.

4. Price

The price of aqua green epoxy sheet is usually higher because the chemicals used in the production process are more environmentally friendly and the process is more complicated. The production process of yellow epoxy sheet is relatively simple and the chemicals used are more common, so the price is usually lower.

‌Aqua green epoxy sheet and yellow epoxy sheet each have their own advantages and disadvantages. When choosing, we need to make a comprehensive consideration based on specific needs, environmental protection, physical properties, application scenarios and price. Only by choosing the right epoxy sheet can we ensure that it performs at its best during use and meets our needs.