Enhancing mechanical properties of palygorskite/styrene–butadiene rubber nanocomposites via regulating palygorskite structure

In this work, the effects of the rotating speed, the ball to material ratio and ball-milling time on the mechanical performance of palygorskite filled styrene butadiene rubber composites were intensively investigated through orthogonal experiments, using modified palygorskite powders of different st...

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Bibliographic Details
Published in:Journal of alloys and compounds 2017-12, Vol.726, p.961-968
Main Authors: Tang, Qingguo, Wang, Fei, Yang, Yang, Tang, Mengran, Zeng, Zhaogang, Liang, Jinsheng
Format: Article
Language:English
Subjects:
Ball milling
Ball milling regulation
Butadiene
Electron microscopy
Energy distribution
Free energy
Mechanical properties
Modified palygorskite
Morphology
Nanocomposites
Particle size
Particle size distribution
Particulate composites
Polarity
Polymer matrix composites
Rubber
Styrene
Styrene butadiene rubber
Surface energy
Tensile strength
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Summary:In this work, the effects of the rotating speed, the ball to material ratio and ball-milling time on the mechanical performance of palygorskite filled styrene butadiene rubber composites were intensively investigated through orthogonal experiments, using modified palygorskite powders of different structures and morphologies as reinforcement filler. Furthermore, the influences of the rotating speed of ball mill on the particle size distribution, surface energy, and morphological structure of the powders as well as the performance of filled rubber were analyzed by using frozen section and electron microscopy observation. Results showed that the ball milling regulated powders exhibited the best reinforcing performance when the ball to material ratio was 3:1, the rotating speed was 900 r/min and the ball-milling time was 20 min. The tensile strength of reinforcing rubber was up to 19.73 MPa when the filling amount was 80 phr. Meanwhile, the modified palygorskite powders displayed the best dispersion character, the minimum surface free energy, and the highest polarity component portion value, indicating that the amount of aggregate particles was the key point affecting the filled rubber composites performance. •Factors on nanocomposites mechanical performance were studied by orthogonal methods.•A feasible way to regulate structure of mineral powders was demonstrated.•Frozen section and TEM were adopted to analyze the nanocomposites structure.•The attapulgite/styrene butadiene rubber nanocomposites have great performance.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2017.07.235