Fast-Polymerizing Monomer in Tubular Reactor

DEPOSITION OF FAST-POLYMERIZING MONOMER IN TUBULAR REACTOR 

In order to examine the elfect of flow pattern in a reactor, which is a crucially important design factor of an LCVD reactor, it is necessary to examine the profile of deposition in a simple reactor first. A tubular reactor with an external radio frequency power coupling is ideally suited to the study of the distribution of polymer deposition. In such a reactor, 100% of the monomer passes through the luminous gas phase in the reactor, and the situation is very close to the case in which no bypass of monomer occurs. The experimental setup used for 

The results indicate that a rather uniform distribution of polymer is obtained at a low flow rate (and low system pressure). Slightly higher deposition rates are found at the downstream side of the monomer inlet. At higher flow rates (and higher system pressures), the entire distribution curve is shifted up and a conspicuous maximum develops. The location of maximal deposition tends to shift slightly more to the downstream side of the monomer inlet as the flow rate increases. 

The effect of N2 may be due to two factors. The first is the same as that in the case of argon. The second factor is the chemical participation of N2. Nitrogen 

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