Abstract:Hydroxyl zinc mono-methacrylate(HZMMA)/carbon black/hydrogenated nitrile rubber(HNBR) composites were prepared using HZMMA and carbon black N774 as mixed reinforcing agent.The morphology structure evolution and mechanical properties of the composites were studied by DSC, FT-IR, XRD during the vulcanization process. The results show that the stretching vibration absorption peak of unsaturated double bond and the characteristic diffraction peak of the crystal rapidly disappear using dicumyl peroxide as curing agent. With the prolongation of the curing time, the tensile strength and modulus at 100% of the composites increase slightly, and the tear strength and elongation at break decrease. After the post curing, the modulus at 100% increases, the tensile strength and hardness increase further, and the elongation at break and tear strength decrease.