TY - JOUR
T1 - Compression molded composites from discarded nylon 6/nylon 6,6 carpets for sustainable industries
AU - Pan, Gangwei
AU - Zhao, Yi
AU - Xu, Helan
AU - Hou, Xiuliang
AU - Yang, Yiqi
N1 - Funding Information:
This research was financially supported by Nebraska Environmental Trust (NET project 12-129 ), National Institute of Food and Agriculture of U.S. Department of Agriculture (Multi-State Project S1054 ( NEB 37-037 ) and USDA Hatch Act ), and the Agricultural Research Division at the University of Nebraska-Lincoln . Yi and Gangwei are grateful to the China Scholarship Council for the financial support. The authors appreciate support from Graduate Student Innovation Plan of Jiangsu Province ( CXZZ13_0751 ) and the Fundamental Research Funds for the Central Universities ( JUDCF13021 ) for Gangwei Pan and John and Louise Skala Fellowship at the University of Nebraska-Lincoln for Yi Zhao.
Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/3/20
Y1 - 2016/3/20
N2 - Discarded carpets with high amount of petroleum-based fibers are usually disposed in landfills, leading to waste of high value petro-polymers and environmental pollution. A novel method to reuse nylon carpet targeting environmental protection and material saving was developed. Recent studies showed that melt blended nylon carpet composites by screw extruder had low mechanical properties and disqualified carpet composites in transportation and construction industries. In this research, compression molded composites from discarded nylon 6/nylon 6,6 carpets had good sound absorption, mechanical properties and water stability. As compared with jute/PP composites, the compression molded composites from nylon 6/nylon 6,6 carpets had up to 40%, 59%, 124% and 32%, higher sound absorption, flexural strength, elastic modulus and impact resistance, respectively. Unshredded nylon 6,6 carpet yarns and styrene-butadiene-rubber/calcium-carbonate binders in carpets reinforced nylon 6 and polypropylene, and thus made the composites strong. Styrene-butadiene-rubber particles and multiple interfaces in the multi-component composites endowed compression molded nylon 6/nylon 6,6 carpet composites with good sound absorption. Developing compression molded carpet composites with good mechanical properties and sound absorption provides a new method of reusing carpets.
AB - Discarded carpets with high amount of petroleum-based fibers are usually disposed in landfills, leading to waste of high value petro-polymers and environmental pollution. A novel method to reuse nylon carpet targeting environmental protection and material saving was developed. Recent studies showed that melt blended nylon carpet composites by screw extruder had low mechanical properties and disqualified carpet composites in transportation and construction industries. In this research, compression molded composites from discarded nylon 6/nylon 6,6 carpets had good sound absorption, mechanical properties and water stability. As compared with jute/PP composites, the compression molded composites from nylon 6/nylon 6,6 carpets had up to 40%, 59%, 124% and 32%, higher sound absorption, flexural strength, elastic modulus and impact resistance, respectively. Unshredded nylon 6,6 carpet yarns and styrene-butadiene-rubber/calcium-carbonate binders in carpets reinforced nylon 6 and polypropylene, and thus made the composites strong. Styrene-butadiene-rubber particles and multiple interfaces in the multi-component composites endowed compression molded nylon 6/nylon 6,6 carpet composites with good sound absorption. Developing compression molded carpet composites with good mechanical properties and sound absorption provides a new method of reusing carpets.
KW - Compression molding
KW - Nylon carpets reuse
KW - Sound absorption
KW - Thermoplastic composites
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U2 - 10.1016/j.jclepro.2016.01.030
DO - 10.1016/j.jclepro.2016.01.030
M3 - Article
AN - SCOPUS:84959286884
SN - 0959-6526
VL - 117
SP - 212
EP - 220
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -