The polymer product cannot be shaped due to an excessively high iron content

To address the issue of poor shaping in polymer products due to excessive iron content, the following measures are taken: 1. Check whether there is rusting at the welds in the reaction vessel. Mirrors or other tools can be used to check whether the solder joints are rusty. If rust is found, it needs to be repaired. 2. Clean the reaction vessel. First, thoroughly remove the residues from inside the reactor. It can be cleaned using appropriate solvents and cleaning tools. Then, thoroughly rinse the reaction vessel with clean water to ensure that all residues are removed. 3. Repair solder joints. If rust is found on the solder joints, it needs to be repaired promptly. Appropriate welding methods can be used to repair the solder joints, ensuring that their surfaces are smooth and free of rust. 4. Conduct a retest. After cleaning and repair, conduct tests again to check whether the iron content of the product is still too high. Depending on the actual situation, it may be necessary to adjust the reaction conditions or choose other materials or methods to reduce the iron content. 5. Regular maintenance. To prevent similar problems from occurring again, it is recommended to perform regular maintenance on the reaction vessels, including cleaning and checking for issues such as rust on the welds. It should be noted that the above suggestions are for reference only. The specific handling method should be determined based on the actual circumstances and the advice of professionals. At the same time, it is necessary to ensure that relevant safety standards are followed and appropriate protective measures are taken when carrying out such operations. .

May I ask what common cleaning solvents can be used? I tried an ammonium sulfate solution before, but the results weren’t very good