Recycling waste tire rubber by water jet pulverization: powder characteristics and reinforcing performance in natural rubber composites
-
Wang Zefeng
,
Wang Zhao
Abstract
Pulverization is a general strategy used prior to any practical application of recycled waste tire rubber (WTR). Mechanical grinding, in use currently, is an inefficient technique due to low-quality rubber powder production and certain indispensable additional pretreatments. The aim of this study is to propose a novel pulverization technique of WTR by ultrahigh pressure water jet. Efficient pulverization of WTR was accomplished by water jet without any pretreatment. Powder characteristics, including particle size distribution (PSD), surface area, thermal behavior and chemical structure changes, were investigated. The curing, mechanical and morphological properties of natural rubber (NR) vulcanizates filled with ground tire rubber (GTR) from water jet pulverization (WJPULV) were evaluated. The results indicate that GTR granules from WJPULV possess a quite fine PSD and large surface area, show similar thermal degradation behaviors to the original WTR and have been partially devulcanized. The improvement of tensile and tear strength of the composites reveals that GTR from WJPULV can be added up to 40 phr without adverse effect. The morphological analysis corroborates the homogeneity of GTR in the NR matrix. All findings confirm that water jet can be an excellent choice for pulverization of WTR.
Acknowledgments
This work was financially supported by the National Key Basic Research Program of China (2014CB239203) and the National Science Foundation of China (no. 51474158). The authors would like to thank the Analysis and Test Center of Wuhan University and the Key Laboratory of Rubber-plastics (QUST), Ministry of Education for the help with the experimental work.
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original articles
- Antistatic surface properties of plastics using donor-accepter molecular compounding antistatic agent
- Rheological properties and crystallization behaviors of long chain branched polyethylene prepared by melt branching reaction
- An investigation into the structure and morphology of polyamide 6/polyaniline hybrid fibers
- Natural rubber/tetra-needle-like zinc oxide whisker composites: their preparation and characterization
- Fabrication of short glass fiber reinforced phenol-formaldehyde-lignin and polyurethane-based composite foam: mechanical, friability, and shape memory studies
- Effect of the particle diameter of the chemical foaming agent on the foaming process and the cellular structure of one-shot compression molded polyethylene foams
- Recycling waste tire rubber by water jet pulverization: powder characteristics and reinforcing performance in natural rubber composites
- Monitoring of the injection and holding phases by using a modular injection mold
- Influence of mold temperature and process time on the degree of cure of epoxy-based materials for thermoset injection molding and prepreg compression molding
- Calendering of non-isothermal Rabinowitsch fluid
- Simulation of dynamic gas penetrations on fingering behaviors during gas-assisted injection molding
Articles in the same Issue
- Frontmatter
- Original articles
- Antistatic surface properties of plastics using donor-accepter molecular compounding antistatic agent
- Rheological properties and crystallization behaviors of long chain branched polyethylene prepared by melt branching reaction
- An investigation into the structure and morphology of polyamide 6/polyaniline hybrid fibers
- Natural rubber/tetra-needle-like zinc oxide whisker composites: their preparation and characterization
- Fabrication of short glass fiber reinforced phenol-formaldehyde-lignin and polyurethane-based composite foam: mechanical, friability, and shape memory studies
- Effect of the particle diameter of the chemical foaming agent on the foaming process and the cellular structure of one-shot compression molded polyethylene foams
- Recycling waste tire rubber by water jet pulverization: powder characteristics and reinforcing performance in natural rubber composites
- Monitoring of the injection and holding phases by using a modular injection mold
- Influence of mold temperature and process time on the degree of cure of epoxy-based materials for thermoset injection molding and prepreg compression molding
- Calendering of non-isothermal Rabinowitsch fluid
- Simulation of dynamic gas penetrations on fingering behaviors during gas-assisted injection molding
