Fast Extrusion Furnace Black

Fast extrusion furnace black with a particle size of 360 A, was used to verify different theoretical concepts of percolation which by definition predicts a rapid change in conductance when volume fraction of conductive particles attains a critical value. Figure 15.38 shows the effect of a carbon black addition to polychloroprene. Up to 30 phr carbon black, the conductivity of poly chloroprene is almost constant and then it increases linearly as concentration of carbon black increases. The following equation applies o = o (P - P Jwhere c is constant, P is concentration of conducting particles, Pc is percolation threshold, and P is exponent which accounts for cluster size."" When data from the Figure 15.38 are replotted as in Figure 15.39 it is evident that the percolation law is valid. 

Acrylonitrile butadiene rubber is a semi-conducting rubber which can be made fiiUy conductive by the addition of (fast extrusion furnace) blacks and acetylene carbon blacks. 

Fast extrusion furnace grade of carbon black. See Furnace Black. 

Fast-breeder reactors (FBR), 17 585-588 liquid-metal, 22 763 knowledge base for, 17 586 Fast color bases, 9 409—4 lOt Fast color salts,. 9 409-411 Fast-curing agents, 10 409-410 Fastening, ABS, 1 428 Fast extrusion furnace (FEF) blacks,... 

Carbon blacks are usually used as fillers. The semireinforcing types, such as FEF (fast extrusion furnace) and SRF (semireinforcing furnace), give the best performance. To lower the cost and improve the processability of light colored... 

A type of carbon black produced by burning natural gas or oil in a large furnace with a supply of air much lower than that required for complete combustion. The main types are super abrasion (SAF), intermediate super abrasion (TSAF), high abrasion (HAF), fast extrusion (FEF), general purpose (GPF), conductive (CF) and semireinforcing (SRF). 

Fast extruding furnace carbon black FF N550 Oil furnace 53 43 Medium high reinforcement, high modulus and hardness, low die swell and smooth extrusion, used in tyre inner lines, carcass and sidewall compounds and hose and other extruded goods... 

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