Study on Interfacial Stabilization Modification of PP-nanosilica Composite

ZHANG Danyang, WANG Yuanxia, SONG Lixin, YANG Rui

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Plastics Science and Technology ›› 2025, Vol. 53 ›› Issue (01) : 46-50. DOI: 10.15925/j.cnki.issn1005-3360.2025.01.008
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Study on Interfacial Stabilization Modification of PP-nanosilica Composite

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Abstract

Nanoparticles significantly enhance the mechanical properties of polymers, but their presence tends to accelerate polymer aging due to the catalytic effect of chemicals on the surface of nanoparticles. Therefore, the stability of polymer composites can be improved by grafting anti-aging chemical groups on the surface of nanoparticles. In this paper, polypropylene (PP)-nanosilica (A380) composites were selected as a typical system, and site-resistant phenol functional groups were grafted on the surface of nanosilica. Compared with the composites without surface modification (PP-A380), the graft-modified nanosilica were uniformly dispersed in PP, and the surface-modified PP-A380 composites had better thermal stability. Due to chemical grafting, the site-resistant phenol showed better migration resistance. Surface grafting also contributed to the improvement of mechanical properties.

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Polyprolylene composites / Nanosilica / Aging / Surface modification / Oxidative induction time

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ZHANG Danyang , WANG Yuanxia , SONG Lixin , et al. Study on Interfacial Stabilization Modification of PP-nanosilica Composite. Plastics Science and Technology. 2025, 53(01): 46-50 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.01.008

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