Preparation of active CaCO3 nanoparticles and mechanical properties of the composite materials

Abstract A new technique was investigated in this paper. The new technique could not only omit the activation process, but reduce energy consumption and use linseed oil which is vegetable grease as modification agent, therefore, the new technique is an environmentally friendly process. Active CaCO3 nanoparticles were directly prepared via carbonation of Ca(OH)2 slurry in the presence of linseed oil at 20 °C. When the weight ratio of linseed oil to CaCO3 nanoparticles was 3%, the active ratio of the product was 99.07%. When adding the active CaCO3 nanoparticles into PVC (the weight ratio of CaCO3 nanoparticles to PVC about 10:100), the mechanical properties of PVC composite materials were significantly improved. The reason might be that there is C C bond in linseed oil, and this makes the formation of polymer easy.