PEC process
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This post was last edited by sunjl1981 on 2013-1-6 at 22:26. I recently heard that after producing acetylene from calcium carbide, PEC can also be manufactured. Does anyone have knowledge in this area, or do you have any relevant information? Please share it with me The new project at our company might use this process instead of the traditional PVC # , , &
I’m sorry, but I’m not very familiar with this; what exactly is PEC? Is it n-propoxychloropropane?
A novel polymeric borate surfactant PBE was directly synthesized using azobisisobutyronitrile as an initiator, along with N-hydroxymethylacrylamide, triethyl borate, and N,N-dihydroxyethyldodecylamine. Its structure was characterized using infrared spectroscopy, nuclear magnetic resonance, and gel chromatography techniques. The hydrolytic resistance, thermal stability, and emulsifying ability of PBE and its borate monomer MBE were investigated, and the surface properties of PBE at different solution pH values were studied through surface tension measurements. The results show that through a direct polymerization synthesis reaction and subsequent purification, a white or pale yellow solid powder PBE can be obtained, with a reaction yield of 77.2%; the weight-average molecular weight of the product can reach Mw=28400 g/mol. PBE has strong hydrolysis resistance, with a thermal decomposition temperature of up to 320°C; its stability is improved compared to the monomer MBE. The HLB value of PBE is between 10 and 13, and its emulsifying ability toward paraffin oil, turpentine, toluene, and petroleum ether is significantly better than that of the monomer MBE and the emulsifier Tween-85. At 25°C, as the pH value of the solution increases, the critical micelle concentration (CMC) of PBE decreases significantly; the greatest decrease in CMC occurs at pH values of 6–7. However, the pH value has a minor effect on γCMC. At pH = 7, the CMC of PBE is 0.12 g/L, while γCMC is 31.2 mN/m. Its surfactant properties are similar to those of conventional low-molecular-weight surfactants, and it outperforms conventional high-molecular-weight surfactants such as polyvinyl alcohol and the polyoxyethylene-polypropylene block copolymer Pluronic104.
I found it online; I’m not sure if it’s the right one
Perfect Electric Conductor