Rubber cable joint aging state evaluation method based on static contact angle

The invention relates to a rubber cable joint aging state evaluation method based on a static contact angle. The method comprises the steps of S1, obtaining a rubber cable joint, cleaning, cooling to room temperature, and drying, S2, titrating water drops on the surface of the rubber cable joint, measuring a contact angle through a contact angle tester, and obtaining an initial measurement value, S3, carrying out accelerated aging treatment on the rubber cable joint, cooling, cleaning and drying, S4, measuring the recovery measurement value of the rubber cable joint at set intervals, and acquiring a contact angle change value, S5, fitting the recovery measurement value to obtain aging recovery time, and S6, based on the aging recovery time and the contact angle change value, evaluating the aging state of the rubber cable joint according to a pre-obtained aging state change rule. Compared with the prior art, the method has the advantages that the evaluation time is greatly shortened, the rubber cable joint can