4.6 Article

Lightweight polyethylene-hollow glass microspheres composites for rotational molding technology

期刊

JOURNAL OF APPLIED POLYMER SCIENCE
卷 138, 期 5, 页码 -

出版社

WILEY
DOI: 10.1002/app.49766

关键词

composites; compatibilization; structure-property relationships; manufacturing; mechanical properties

资金

  1. Regione Lombardia
  2. Research Project Arred'Arte ID [187022]

向作者/读者索取更多资源

Innovative composites based on PE filled with HGMs were successfully prepared for rotational molding technology, achieving lightweight materials with appealing aesthetics. Surface modification of HGMs and the addition of a compatibilization agent effectively improved the properties of the composites, leading to the production of lightweight plastic items with excellent aesthetics on a large scale.
Innovative composites based on polyethylene (PE) filled with hollow glass microspheres (HGMs) were formulated and successfully prepared as suitable plastic materials for rotational molding technology. The HGMs here used allow to attain lightweight materials with a reduced resin content and appealing aesthetical qualities. To enhance filler dispersion and phase adhesion, thus improving the ultimate properties of the composite materials, two compatibilization strategies were adopted: namely, surface modification of HGMs by dodecyl(triethoxy)silane or addition during mixing of a maleinized PE as in-situ coupling agent. The effectiveness of the surface treatments on HGMs was assessed by attenuated total reflectance Fourier-transform infrared spectroscopy and thermogravimetric analysis investigations. PE-based composites at various HGMs contents (5, 10, and 20 wt%) were prepared by melt blending. Morphology of untreated and modified HGMs, their dispersion in the composites as well as filler/matrix adhesion were investigated by SEM microscopy. Thermal, rheological and mechanical properties of the composites were studied in comparison with neat PE. Rotational molding tests carried out both in laboratory and industrial site demonstrated the feasibility of producing lightweight plastic items (weight reduction up to 17%) of excellent aesthetics on a large scale.

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