Yet you haven't left him. So your friends know that if they say something negative about him, you might tell him what they said, which could cause trouble for them or he could try to stop you from seeing them. If they want you to remain friends with them so they can keep an eye on you and because they like your company, saying negative things about your husband isn't the way to achieve that.
As you haven't left him yet, it's also possible you'd respond to their negative comments with anger because you might disagree with their opinion, so they stay silent.
They could also be shocked and not know what to say. That happened to me when a friend mentioned in conversation that she'd been raped, on two different occasions by different people and many many years ago. On the second occasion she was apparently annoyed because she'd been wearing jeans and a jumper that time. Which said to me that she partly blames herself for it the first time because she'd apparently been clubbing and was wearing a mini skirt and crop top. She was quite matter of fact about it all and wasn't looking for sympathy but I was shocked not only by the disclosure but also that she partly blames herself. I said nothing.
What you've described quoted above is rape and it's happening regularly and you still remains in the relationship, which looks like you've accepted getting raped all the time, even if you don't like it. Whether your friends recognise that it's rape or not, they'll likely realise it's very wrong and I wouldn't be at all surprised if they're shocked into silence. By the fact you've not called the police to arrest him and haven't left him, as much as by the raping itself.
The one who has been through an abusive relationship may still have poor boundaries herself and doesn't necessarily recognise that you're being abused because you're not being beaten. I mean you didn't recognise it when you started this thread and you're the one living it.
IME friends never tell you to leave. What if you left and life was hard for a while and you hated them for suggesting it? They don't want the responsibility for that or to risk their friendships with you. What if you went back to him? You can't really stay friends with someone who you know hates your partner, it doesn't work and becomes the elephant in the room you can't talk about.
If you want to leave though, I'll bet most true, decent friends would do whatever they could to help or support you and after you've left and stayed left, not gone back, people will start to voice their secret opinions about how they never liked him and they think you're well rid.