摘要: Tremolite, a kind of inorganic filler, was modified with a silane coupling agent γ-methacryloxypropyl trimethoxy silane (MPS) in ethanol/ammonia solution. The graft of MPS on tremolite was confirmed by X-ray photoelectron spectroscopy (XPS), IR and thermogramitric analysis (TGA) measurements. In addition, contact angle analysis showed that particle surface property was changed from hydrophilicity to hydrophobicity after the modification. Modified tremolite and pure tremolite were blended respectively with PA1010 (polydecamethylene esbacamide) and the mechanical properties of the composites were studied. Results revealed that MPS had a remarkable influence on the mechanical properties of the composites due to the improvement of interfacial adhesion between filler and matrix. Tensile strength and notched Izod impact strength of MPS-modified tremolite composites were improved simultaneously compared to those with pure tremolite. Composites with MPS modified tremolite exhibited a much higher thermal stability than the samples with pure tremolite confirmed by TGA. The morphologies of the composites were also investigated using scanning electron microscopy (SEM). Results showed that better dispersion of MPS modified tremolite in matrix was obtained.