PVC lubricant analysis on data obtained from the rheometer

Liquidity and inversely proportional to the viscosity of the melt viscosity and is proportional to the torque. Therefore, the better the melt flow, the lower the torque. The results are given in three WSD Calcium stearate  torque value in the torque rheometer, which is the minimum torque, maximum torque (torque plasticizer), and the balance torque. The author believes that the plasticizing torque evaluate lubricant to improve the liquidity of the most important indicators of PVC resin. Of course, the minimum torque and torque balance also has certain reference but they are a very good correspondence between the plasticizing torque, general plasticizing torque, minimum torque and torque balance is large, and vice versa. I also  WSD Titanium dioxide rutile believe that the plasticizing effects of rotation torque device energy consumption is much larger than the actual processing equipment affect the balance of torque. There are two reasons: ① in the general proximity rigid PVC formulations are useful ACR processing aid, in this case, the torque value changes plasticized different lubrication systems is large, the  WSD Aluminum hydroxide torque balance is not very significant change [8]; ② various reasons (such as to avoid thermal decomposition, improved productivity, etc.) wishes to process the molten material balance as the torque corresponding to a shorter time, i.e., after reaching the expected degree of plasticized plastic melt leave processing equipment as soon as possible. Although only a plasticizing peak torque, but the plasticizing time of the peak corresponding to the integral of the area (energy consumption), but much greater than the torque corresponding to the balance of the integrated area of ​​time (energy consumption). It has also been proved: plasticizers torque only a few percent of large, integral surface because it is large, it also consumes a lot of energy, processing equipment due to overburdened