is it a sin to abandon my dad completely

My dad has been physically and verbally abusive to my family my whole life, especially to my mom. He pretends to be nice at times but does it again and he always talks about how much he hates us. There’s no way to talk to him and make him a better person he’s evil. I hate him also and I plan to abandon him completely soon, and I try to convince my mom and siblings to come with me. Would it be a sin? Even if it is I still will but I just want to know.