Synthetic Resin Bonded Paper

Synthetic Paper
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Bonded Paper
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Bonded Paper
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Aerospace Synthetic Resin Bonded Paper (SRBP) Fabrications - Europe ...
Looking to source suppliers of Aerospace Synthetic Resin Bonded Paper (SRBP) Fabrications. Visit Kellysearch now for full details on local suppliers of Aerospace ...
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FR-2 - Wikipedia, the free encyclopedia
... It is a NEMA designation for synthetic resin bonded paper, a composite material ... Synthetic Resin Bonded Paper (SRBP) [edit] See also. Formica (plastic) ...
en.wikipedia.org

Etching Your Own PC boards
bonded under heat and pressure to form SSRRBBPP (synthetic resin bonded ... SRRBBPP: Synthetic resin bonded paper laminate, used as the insulating substrate ...
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Millborn Switchgears Pvt. Ltd. - Rewirable Porcelain Fuse, Srbp ...
A Very Fast Growing Electrical Company manufacturing Various kind of electrical products like-motor starter, Rewirable ... (Synthetic Resin Bonded Paper) ...
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FR-2 is an abbreviation for Flame Resistant 2. It is a National Electrical Manufacturers Association designation for synthetic resin bonded paper, a composite material made of paper impregnated with a plasticized phenol formaldehyde resin, used in the manufacture of printed circuit boards. Its main properties are similar to NEMA grade XXXP (MIL-P-3115) material, and can be substituted for the latter in many applications.

Applications FR-2 sheet with copper foil lamination on one or both sides is widely used to build low-end consumer electronics equipment. While its electrical and mechanical properties are inferior to those of epoxy-bonded fiberglass, FR-4, it is significantly cheaper. It is not suitable for devices installed in vehicles, as continuous vibration can make cracks propagate, causing hairline fractures in copper circuit traces. Without copper foil lamination, FR-2 is sometimes used for simple structural shapes and electrical insulation.

Properties {| width="80%" align="center"|-| Property| Value|-| Dielectric constant (Permittivity)]|-| Dissipation factor| 740 [Volt/Thou (unit of length)|}

Fabrication FR-2 can be machined by drilling, sawing, milling and hot punching. Cold punching and shearing are not recommended, as they leave a ragged edge and tend to cause cracking. Tools made of high-speed steel can be used, although tungsten carbide tooling is preferred for high volume production.

Adequate ventilation or respiration protection are mandatory during high-speed machining, as it gives off toxic vapors.

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