期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 146, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2020.112185
关键词
Agricultural wastes; Maximization; Biochar; Composites; Properties evaluation
资金
- Natural Science Foundation of Shandong Province of China [ZR2019MEE036]
- Agriculture and Food Research Initiative Competitive Grant from the National Institute of Food and Agriculture, United States Department of Agriculture [2016-67021-24533, 2014-38502-22598]
- National Key Research and Development Program of China [2018YFD1101001]
- National Natural Science Fund of China [51806129]
- distinguished expert of Taishan scholars Shandong province project
- higher education superior discipline team training program of Shandong province
Biochar derived from agricultural wastes was used to reinforce high-density polyethylene (HDPE) to obtain composites abbreviated as B10, B20, B30, B40, B50, B60, and B70. Investigating the mechanical, thermal, water absorption and flame retardant properties of the composites is one of the objectives while maximizing the utilization of agricultural wastes is the ultimate goal of this work. It was found that flexural properties, tensile properties, storage modulus, elasticity, creep resistance and anti-stress relaxation ability of HDPE were improved by the inclusion of biochar, and excellent mechanical properties were obtained in 50 % even 60 % biochar added composites because of good dispersion and unique structure shown in the interface. The composites achieved good flexural strength of 34.95 MPa in B50, flexural modulus of 1.79 GPa in B40, tensile strength of 29.05 MPa in B40, and tensile modulus of 2.03 GPa. Additionally, the thermal and flame retardant properties (limited oxygen index of 25.06 % in B70) increased for the biochar added composites as the biochar loading increased due to the high thermal stability of biochar, although biochar had a negative effect on water-resistance of the composites. The results revealed that the ultimate goal was achieved in terms of producing composites with excellent mechanical, thermal, water absorption and flame retardant properties while maximizing the utilization of agricultural wastes as a rational balance.
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