Mixing and Dispersion of Hollow Glass Microsphere Products

Shira, Stephanie; Buller, Cary

doi:10.1016/b978-1-4557-7443-2.00011-6

Cited by 6 publications

(10 citation statements)

References 7 publications

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“…The formulations studied here were prepared ad hoc in order to underline the effect of different dispersing agents on the wettability of hollow glass microspheres. Tested samples consisted of an epoxy resin (component A), an anti-foam agent necessary to avoid foam formation, hollow glass microspheres used as extenders [ 38 ] and a proper dispersing agent. Rheological modifiers, solvents, other extenders and pigments were not used to simplify the studied formulations.…”

Section: Methodsmentioning

confidence: 99%

Rheological, Mechanical and Morphological Characterization of Fillers in the Nautical Field: The Role of Dispersing Agents on Composite Materials

Vita

Ricotti²,

Dodero

et al. 2020

Polymers

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Coatings have a fundamental role in covering the external surface of yachts by acting both as protective and aesthetic layers. In particular, fillers represent the essential layer from the point of view of mechanical properties and consist of a polymeric matrix, different extenders and additives, and dispersing agents, with the latter having the role to provide good extender-matrix compatibility. In the present work, the effects of dispersing agents with an ionic or steric action on the interactions between hollow glass microspheres and an epoxy-polyamide resin are evaluated. Un-crosslinked filler materials are studied via rheological tests, whereas the mechanical and morphological properties of the crosslinked samples are assessed. The results clearly indicate that steric dispersing agents provide a much greater compatibility effect compared to ionic ones, owing to their steric hindrance capability, thus leading to better-performing filler materials with a less-marked Payne effect, which is here proved to be an efficient tool to provide information concerning the extent of component interactions in nautical fillers. To the best of our knowledge, this work represents the first attempt to deeply understand the role of dispersing agents, which are until now empirically used in the preparation of fillers.

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Section: Methodsmentioning

confidence: 99%

Rheological, Mechanical and Morphological Characterization of Fillers in the Nautical Field: The Role of Dispersing Agents on Composite Materials

Vita

Ricotti²,

Dodero

et al. 2020

Polymers

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“…The incorporation of HGM to replace the amount of glass fibers face a challenge in the processing of traditional composites, due to the brittle feature of the thin wall glass. Thus, a large amount of HGM fracture during extrusion and injection process, the scientific literature brings as one solution the two-stage processing method, based on twin-screw extrusion [17][18][19][20] . The twin-screw extrusion processing is commonly used to improve the distribution and dispersion during the mixing process on the extrusion, and the two stages prevent the breakage of the glass fibers and HGM, what ensure a better efficiency process compared with the traditional single screw method.…”

Section: Introductionmentioning

confidence: 99%

Effect of hollow glass microspheres addition on density reduction and mechanical properties of PA6/glass fibers composites

Ferreira

Lechtman

Dias³

et al. 2022

Polímeros

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The strategy of combining the traditional reinforcement of glass fibers (GF) with lighter hollow glass microspheres (HGM) can afford to fulfill the need for potential light-weight and high-strength modern materials required in various sectors, such as automotive and aerospace industry applications. This work fabricated composites of PA6/GF/HGM by melting blending in a co-rotating twin-screw extruder, and subsequently, injection molded. The effects of HGM content on the density, morphological and mechanical properties were investigated and the PA6/GF/HGM composites properties were compared to the properties of the traditional PA6/GF (70/30) wt% composite, widely used today in automotive industries. With the increase of HGM amount in the formulations, a reduction of between 3 and 12% in density was achieved with a slight reduction in its mechanical properties, showing that this new strategy can be applied to replace the PA6/GF (70/30) wt% composite, providing a considerable weight reduction for these materials.

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“…These unique conditions can also lead to a wide spectrum of glasses usually characterized by high melting temperatures and rapid crystallization. 33,34 The resulting GM of various types shows excellent heat resistance, light weight, porosity, and mechanical properties. These properties make them advantageous in aviation and the automotive industry, 34 and construction.…”

Section: Introductionmentioning

confidence: 99%

“…33,34 The resulting GM of various types shows excellent heat resistance, light weight, porosity, and mechanical properties. These properties make them advantageous in aviation and the automotive industry, 34 and construction. [35][36][37] GM are also considered for hydrogen storage, 30,[38][39][40][41] energy-saving applications (thermal insulation), and also as luminescent or reflective materials.…”

Section: Introductionmentioning

confidence: 99%

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Low‐alkali borosilicate glass microspheres from waste cullet prepared by flame synthesis

Hujova

Michalková³

et al. 2021

Int J of Appl Glass Sci

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Mixing and Dispersion of Hollow Glass Microsphere Products

Cited by 6 publications

References 7 publications

Rheological, Mechanical and Morphological Characterization of Fillers in the Nautical Field: The Role of Dispersing Agents on Composite Materials

Rheological, Mechanical and Morphological Characterization of Fillers in the Nautical Field: The Role of Dispersing Agents on Composite Materials

Effect of hollow glass microspheres addition on density reduction and mechanical properties of PA6/glass fibers composites

Low‐alkali borosilicate glass microspheres from waste cullet prepared by flame synthesis

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