Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province

Nanjing, China

Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province

Nanjing, China
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Zhu B.,Nanjing Agricultural University | Zhu B.,Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province | He C.,Nanjing Agricultural University | He C.,Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province | And 8 more authors.
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2017

Three types of plant fibers (hazelnut shell, coconut shell, and rice-husk) were separately added into polyvinyl chloride (PVC) as the fillers to prepare three types of husk's fibers/PVC composites through the extrusion molding process. The components of the plant fibers were analyzed and the mechanical property and water absorbency capability of the composites were tested. The FTIR spectra analysis and TG-DSC analysis was conducted on the husk's fibers/PVC composites. The section microstructures of the composites were observed by SEM. The results show that the rice-husk is the richest in cellulose, and rice-husk/PVC composite has the best binding interface and mechanical properties with bending strength at 69.79 MPa, which is 4.34% and 24.87% higher than that of the coconut shell/PVC and the hazelnut shell/PVC composites, respectively. The water absorption in 24 h of the comoposites are all below 1%, and the coconut shell/PVC composite has the lowest water absorption rate among them, which is 0.6005% in 24 h, while the hazelnut shell/PVC composite has the best heat stability. The mechanical property and water absorbency capability of husk's fibers/PVC composites are all up to GB/T 24137-2009 and GB/T 24508-2009, respectively. © 2017, Chinese Society for Composite Materials. All right reserved.


He C.,Nanjing Agricultural University | He C.,Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province | Fu J.,Nanjing Agricultural University | Fu J.,Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province | And 8 more authors.
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2015

In order to investigate the influence of antimildew agent zinc borate on the fungus corrosion resistance of wheat straw/polypropylene (PP) composites, the fungus accelerating corrosion experiments of wheat straw/PP composites with different contents of zinc borate were conducted. The mechanical properties, color variation and water absorption of composites after corrosion were tested. And FTIR was used to analysis the changes of functional groups of composites. Also the surface mildew growth and microstructure of composites were observed by stereomicroscope. The results show that the zinc borate could improve the corrosion resistance of wheat straw/PP composites. The optimum additive amount of zinc borate is 2wt%, wheat straw/PP composites have little mildew on the surface and flexural strength, flexural elastic modulus, tensile strength and impact strength are increased by 6.5%, 50.2%, 6.8% and 11.1% respectively after corrosion compared with non-adding zinc borate composites. The water absorption rate and color difference value are decreased by 23.9% and 30.7%. The zinc borate could effectively prevent the mildew corrosion to the cellulose and hemicellulose of wheat straw in wheat straw/PP composites when the content of zinc borate is 2wt% and interface wheat straw fiber is easily corrodible by fungus when the content of zinc borate is more than 2wt% due to its effect on interface of composites. ©, 2015, Beijing University of Aeronautics and Astronautics (BUAA). All right reserved.

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