What are the temperature requirements for using resin?

All types of resins possess certain heat resistance, and there is a specific temperature range within which they can be used; temperatures that are too high or too low will significantly affect the mechanical strength and exchange capacity of the resins. When the temperature is too low, i.e., 0°C or below, the resin tends to freeze, which reduces its mechanical strength and causes the particles to break apart; this in turn affects the resin’s service life and reduces its exchange capacity ； Excessively high temperatures can cause thermal decomposition of the resin, affecting its exchange capacity and service life. Various heat resistance properties shall be determined through qualification tests. But generally, cationic resins have better heat resistance than anionic resins. Salt-type resins are superior to H-type or OH-type ones, and among salt types, the Na-type has better heat resistance than those with strong basicity, a property that is well-known. Therefore, when using the resin, strict control over water temperature is required.

All types of resins possess a certain degree of heat resistance, and there are specific temperature limits for their use; temperatures that are too high or too low can significantly affect the mechanical strength and exchange capacity of the resins. When the temperature is too low, i.e., 0°C or below, the resin tends to freeze, which reduces its mechanical strength and causes the particles to break apart; this in turn affects the resin’s service life and reduces its exchange capacity ； Excessively high temperatures can cause thermal decomposition of the resin, as well as affect its exchange capacity and thus its service life. The heat resistance of various resins should be determined through evaluation tests. But generally, cationic resins have better heat resistance than anionic resins. Salt-type resins are better than H-type or OH-type resins, and among salt-type resins, those of the Na-type have the best heat resistance. Ordinary cationic resins can withstand temperatures of 100–110°C, while anionic resins can withstand temperatures of 50–60°C (in strongly alkaline conditions). The heat resistance of weakly basic anion resins is better than that of strongly basic ones, and they can generally withstand temperatures of 80–90°C. Therefore, when using the resin, strict control over water temperature is required.