I am not in any way totally agreeing with the relatively inflammatory post above (and especially the way it was expressed), but I do think there could be a kernel of truth to the husband wanting more sex and expressing it in a crude way to try to get his wife to be more sexual with him. The wife says she is a "child of sexual abuse", and, depending on whether she has worked through that in therapy, she could be unusually shy about, or frightened by, or avoidant of, sex, or she could have "rules" about sex, like, if it's not done in this particular way, I think it's perverted and sleazy and I will refuse to participate. I have great sympathy for the OP and I am not saying she is at fault, just that this could be a mismatch between a man who likes lots of sex, and a lot of variety from one woman, and a woman who is more restrained or shy or is dealing with frightening sexual memories. And in any relationship, when one partner starts to feel like they're not getting what they need, their demands will escalate until they feel like their needs are recognized.
Of course I have no idea what the actual situation is, it just seems like this could be the pattern in this marriage. I think if the wife would, just as an experiment, surprise her husband with a little more sex, more varied sex, etc., for just a week or so, the husband might feel like his needs were being met and he would back off of his demands a little. It is possible the husband is watching more porn because he feels his sex life with his wife is lacking.