纳米材料改性铸型尼龙的研究

Study of MC Nylon Modified by Nanomaterials

铸型尼龙是以己内酰胺为单体,强碱性物质为催化剂,与助催化剂等助剂一起,经过真空脱水后直接注入到已预热至一定温度的模具中,聚合成固体坯料。在合成铸型尼龙的基础上,考察了蒙脱土、碳化硅、氧化锆、碳酸钙四种纳米材料填料,对材料拉伸强度、断裂伸长率、抗弯强度、硬度和冲击强度等指标的影响,分析了各指标的变化规律及联系。实验结果表明:当填料为纳米氧化锆时,拉伸强度、抗冲击强度改善明显,分别为61.9 MPa和10.2 KJ/M2,硬度略有提高,为10.2 HRR,而伸长率仅为22%,材料的综合性能较佳。

Based on caprolactam monomer cast nylon, with an alkaline substance as catalyst and other additives together with a cocatalyst, after the vacuum dewatering is injected directly into a mold preheated to a certain temperature, the polymerization a solid billet. On the basis of the synthetic cast nylon, montmorillonite, silicon carbide, zirconium oxide, calcium carbonate, four kinds of nanometer materials packing, on the material tensile strength, elongation at break, bending strength, hardness and impact strength index, the effect of each index and the change rule of contact were analyzed. The experimental results show that when packing for nano zirconia, tensile strength, impact strength improved obviously, were 61.9 MPa and 10.2 KJ/M2, hardness increased slightly, 10.2 HRR, and elongation is only 22 %, the comprehensive performance of materials.