4-Fluoroamphetamine, also known as 4-FA or 4-FMP, is a synthetic drug in the amphetamine class. Its high is comparable to a very low MDMA dose, with mild stimulation and euphoria. It comes in the form of a white crystalized substance.
by PsychedMF July 30, 2021
Get the 4-Fluoroamphetaminemug. FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
"FR" stands for "flame retardant", and does not denote that the material complies with the standard UL94V-0 unless testing is performed to UL 94, Vertical Flame testing in Section 8 at a compliant lab. The designation FR-4 was created by NEMA in 1968.
FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications.
Grade designations for glass epoxy laminates are: G-10, G-11, FR-4, FR-5 and FR-6. Of these, FR-4 is the grade most widely in use today. G-10, the predecessor to FR-4, lacks FR-4's self-extinguishing flammability characteristics. Hence, FR-4 has sincewhen? replaced G-10 in most applications.
"FR" stands for "flame retardant", and does not denote that the material complies with the standard UL94V-0 unless testing is performed to UL 94, Vertical Flame testing in Section 8 at a compliant lab. The designation FR-4 was created by NEMA in 1968.
FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications.
Grade designations for glass epoxy laminates are: G-10, G-11, FR-4, FR-5 and FR-6. Of these, FR-4 is the grade most widely in use today. G-10, the predecessor to FR-4, lacks FR-4's self-extinguishing flammability characteristics. Hence, FR-4 has sincewhen? replaced G-10 in most applications.
Fenhar FR-4 epoxy resin systems typically employ bromine, a halogen, to facilitate flame-resistant properties in FR-4 glass epoxy laminates. Some applications where thermal destruction of the material is a desirable traitcitation needed will still use G-10 non flame resistant.
by fenharxz.com August 7, 2024
Get the FR-4mug. by Taygrace52 April 8, 2022
Get the 4 fingers upmug. YB 4 LIFE is a Rapper/Artist from the city of Philadelphia. He is known for his versatility and creative sounds displayed throughout his music. If you see him outside he is hard to miss because of his stylish and unique fashion, he is someone who stands out amongst a crowd. If you haven't heard of him you most likely have seen him on your "For You Page" because he has repeatedly gone viral time and time again in these last few months. He is also known for his catchy slogan " YB EW YB EW" which he says in most of his songs and videos. YB 4 LIFE has got our attention and we are excited to see what else he has to offer!
by phillybandit March 6, 2025
Get the YB 4 LIFEmug. by RitaSkeeter December 16, 2008
Get the group 4mug. by urlocallatina April 19, 2022
Get the 4 fingers upmug. by sheloverico_ July 11, 2022
Get the 4$Rmug.