1. Different uses. The main raw materials for the production of circuit boards are alkali-free glass cloth, fiber pap...
1. Different uses. The main raw materials for the production of circuit boards are alkali-free glass cloth, fiber paper, and epoxy resin. Fiberglass board: base material fiberglass cloth, epoxy board: binder is epoxy resin, FR4: base material cotton fiber paper. All three are fiberglass boards.
2. Different colors. Usually the epoxy board on the market is phenolic epoxy, which is yellow. Not used as base material for hard circuit boards or electrical insulation. FR4 is a NEMA standard pure epoxy sheet. The normal color is dark green, which is the color of epoxy. There are also yellow ones. Generally speaking, the yellow FR4 is called yellow material, and the white (green) one is called white material. FR4 is more expensive than epoxy board, and the price of fiberglass board cannot be confirmed.
3. Different properties. Fiberglass board has the characteristics of sound absorption, sound insulation, heat insulation, environmental protection, flame retardant and so on. FR-4 is also known as fiberglass board; fiberglass board; FR4 reinforced board; FR-4 epoxy resin board; flame retardant insulation board; epoxy board, FR4 light board. Epoxy glass cloth board; circuit board drilling pad.
Epoxy board and glass fiber board contain active epoxy groups in their molecular structure, which can undergo cross-linking reactions with various types of curing agents to form insoluble and infusible polymers with a three-dimensional network structure.
FR-4 epoxy fiberglass cloth substrate is a type of substrate that uses epoxy resin as the adhesive and electronic grade fiberglass cloth as the reinforcing material. Its adhesive sheet and inner core thin copper-clad laminate are important base materials for making multi-layer printed circuit boards.
Performance: The mechanical properties, dimensional stability, impact resistance and moisture resistance of epoxy fiberglass cloth substrate are higher than those of paper substrate. It has excellent electrical performance, high operating temperature, and its performance is less affected by the environment. In terms of processing technology, it has great advantages over other resin fiberglass cloth substrates. This type of product is mainly used for double-sided PCBs and is used in large quantities.
Application: Epoxy fiberglass cloth substrate, the most widely used product model is FR-4. Due to the development needs of electronic product installation technology and PCB technology, high Tg FR-4 products have emerged.