Long polymerization reaction time
Thread Content
The normal reaction time for polymerization in an 87-cubic-meter reactor is around 280 minutes. However, when using the initiator provided by the manufacturer under trial, the reaction time was 370 minutes. The concentration and amount of the initiator were set according to the parameters for normal reactions. May I ask the experts what could be the reason for this?
New initiators are definitely different from the original ones; their decomposition temperatures and initiation efficiencies may vary
Was the initiator you used before a composite initiator or a single initiator? And what about the initiator being tested now? It is understandable that the reaction time is longer when a trial initiator is used; this allows for better control of other parameters during the reaction, thereby preventing safety accidents. You can gradually increase the amount of initiator added on this basis, provided that temperature and pressure can be controlled. When the amount of initiator added reaches the optimal time, compare the prices associated with the two different amounts of initiator as well as the quality of the products produced, and this will allow you to determine the effectiveness of each initiator
They are all composite; does the initiator preparation process have an impact?
Initiators from different manufacturers, even if their parameters appear the same, have slight differences in solvents, impurities, and so on. Moreover, the same initiator is also available in different specifications. So it needs to be carefully verified.
What are the effects of EHP and CNP respectively? What is the mixing ratio, and how is the half-life of each determined? For type 5 resin.
The initiator produced in Ordos contains an insufficient amount of active components that participate in the reaction, which damages the dispersant; as a result, a large amount of dispersant is required. Otherwise, granular material will be produced.