AEROGEL-MODIFIED POLYPROPYLENE AND PREPARATION METHOD THEREFOR, AND ULTRALIGHT THERMAL-INSULATING MELT-BLOWN NON-WOVEN FABRIC AND PREPARATION METHOD THEREFOR

摘要

Aerogel-modified polypropylene and preparation method therefor, and an ultralight thermal-insulating melt-blown non-woven fabric and preparation method therefor. The preparation method for aerogel-modified polypropylene comprises: before or during a polymerization reaction, adding aerogel to blend with reaction materials having low viscosity, thereby implementing uniform dispersion of the aerogel to prepare aerogel-modified polypropylene, wherein the reaction materials comprise a propylene monomer, a catalyst, and an additive, and the aerogel has granularity falling within the range from 20 nm to 100 μm, porosity falling within the range from 40% to 99.9%, stacking density falling within the range from 3 g/L to 500 g/L, and a volume fraction being 20-60% of the volume of the ultralight thermal-insulating melt-blown non-woven fabric prepared from the aerogel-modified polypropylene. The method can prepare aerogel-modified polypropylene particles having uniformly dispersed aerogel and great melt-blowing performance, and subsequently further prepares an ultralight melt-blown polypropylene non-woven fabric having a thermal insulating function, wherein the aerogel does not shed during the use of the non-woven fabric.