层层自组装改性剑麻纤维填充聚丙烯复合材料性能研究

doi:10.11896/cldb.20030145

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Abstract Sisal fibers (SF) were coated by amino functionalized nano-silica (RNS-A) and ammonium polyphosphate (APP) through layer-by-layer (LBL) assembly method, and polypropylene (PP) composites filled with sisal fiber were prepared by melt blending. The combustion behavior of composites was studied by cone calorimeter test (Cone),the thermal stability of composites was studied by thermogravimetric analysis (TG/DTG), the morphology of carbon residue was observed by scanning electron microscopy (SEM), the mechanical properties of composites were investigated by universal mechanical tester, and the effect of modified fiber on the rheological behavior of composite materials was investigated with a rotating rheometer. The results showed that compared with the PP/SF system, the peak heat release rate (PHRR) of PP/ mSF composite was reduced to 324.9 MJ/m², a decrease of 28.4%; the final amount of carbon residue was increased to 7.1%, increased by 54.3%, the structure of the carbon layer after combustion was relatively complete, but the tensile strength of the system decreased to some extent. Compared with pure PP, both PP/SF and PP/mSF composites showed high dynamic modulus and complex viscosity.

Key words： polypropylene sisal fiber layer-by-layer assembly flame retardancy

Published: 04 June 2021

CLC number:

TB332

Fund:National Natural Science Foundation of China(51703051).

About author:: Weili Feng, from September 2018 to July 2021, she learned in College of Chemistry and Chemical Enginee-ring of Henan University , focusing on the research of polymer composites.
Baoying Liu received her Ph.D in Polymer Materials Processing Engineering from Sichuan University in 2014. She is currently an associate professor in College of Chemistry and Chemical Engineering, Henan University. She is mainly engaged in the modification of flame retardant and high performance of thermoplastic compo-sites.

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	FENG Weili
	KANG Xinglong
	LIU Yan
	LU Zhehong
	LIU Baoying
	FANG Xiaomin
	DING Tao

Cite this article:

FENG Weili,KANG Xinglong,LIU Yan, et al. Properties of Polypropylene Composites Filled with Layer-by-layer Assembly Modified Sisal Fiber[J]. Materials Reports, 2021, 35(10): 10211-10215.

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http://www.mater-rep.com/EN/10.11896/cldb.20030145 OR http://www.mater-rep.com/EN/Y2021/V35/I10/10211

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