Effect of Drawing Induced Dispersion of Nano-Silica on Performance Improvement of Poly(propylene)-Based Nanocomposites
✍ Scribed by Wen Hong Ruan; Xian Bo Huang; Xian Hou Wang; Min Zhi Rong; Ming Qiu Zhang
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 182 KB
- Volume
- 27
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Summary: A new route that combines graft pre‐treatment and drawing techniques with melt mixing to prepare nanoparticle‐filled thermoplastic polymer composites is reported. Nano‐SiO~2~ particles are first modified by graft polymerization and then the grafted nanoparticles are melt‐compounded with poly(propylene) (PP) to produce composite filaments via drawing. Finally, the filaments are injection molded into bulk materials. Because the proposed manufacturing method is able to induce separation of the nanoparticles and the formation of beta‐crystals in the PP matrix, the resultant PP‐based nanocomposites are much tougher than the unfilled polymers, as characterized by either static or dynamic tests, in addition to showing a simultaneous increase in strength and stiffness.
Force–time curves of PP and its nanocomposites recorded during notch impact tests.
magnified imageForce–time curves of PP and its nanocomposites recorded during notch impact tests.