Recovery and recasting technology of Nafion film in IPMC (Ionic Polymer Metal Composite)
A recasting and process technology, which is applied to the recovery and recasting process of Nafion membrane in IPMC materials, can solve the problems of low concentration of Nafion solution, unsuitable for IPMC field, harsh conditions, etc., and achieve low prices of equipment, medicines and equipment. , Excellent driving performance and strong repeatability
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[0025] 1) IPMC waste purification pretreatment
[0026] First, the waste IPMC material is subjected to a series of pretreatment procedures to remove inorganic impurities and organic impurities, which includes cutting the IPMC waste into a suitable size (generally 1X1cm 2 The size, too large or too small is not easy for subsequent operations), so that the contact with the treatment liquid becomes more uniform. Put the cut into pieces of IPMC waste into a strong acid solution for 30 minutes. The strong acid can be sulfuric acid and hydrochloric acid. If hydrochloric acid is used, the concentration is 0.2mol / L. During the cooking and washing process, the container containing the IPMC waste should be sealed to prevent the HCI from volatilizing into the air during the cooking and washing process. After taking it out, rinse with deionized water for 2-3 times, and then put it in 3% hydrogen peroxide for 30 minutes. This is because after the waste is placed in the air for a period of tim...
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