纳米粒子由于十分容易聚集和团聚,加之表面亲水性的纳米颗粒和表面憎水性的聚合物基体的相容性较差,往往以较大的团聚体形式分散于聚合物基体树脂中,导致复合材料的性能不佳。基于常规共混法的纳米颗粒/聚合物复合材料制备技术仍是重要的制备途径之一,关键在于如何解决复合体系中纳米粒子的有效分散和利用问题。为此,本文中针对非层状纳米无机粒子/热塑性聚合物复合材料的制备,介绍了纳米无机粒子表面改性和纳米颗粒在热塑性聚合物中的分散技术方面的研究进展。
Because inorganic nanoparticles tend to agglomerate and their hydrophilic surface is nearly incompatible with hydrophobic polymers,they have to present themselves in the form of large agglomerates in the polymer composites,which results in poor properties of the composites.The fabrication of nanoparticles/polymer composites via conventional compounding should still be workable.The key issue lies in the effective dispersion and the application of the nanoparticles.The current paper reviews the recent achievements in surface modification of nanoparticles and processing aided dispersion techniques during blending with polymers.