A Process Optimization and Performance Study of Environmentally Friendly Waste Newspaper/Polypropylene Film Layered Composites

Autor:	Hong Yun, Zhang Weiwei, Xiaojing Hu, Guan Litao, Chuanshuang Hu, Neng Guan
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Absorption of water Materials science 02 engineering and technology mechanical properties 010402 general chemistry 01 natural sciences lcsh:Technology composites Article law.invention Expansion ratio chemistry.chemical_compound Flexural strength law Ultimate tensile strength Lamination General Materials Science Composite material lcsh:Microscopy lcsh:QC120-168.85 Polypropylene lcsh:QH201-278.5 lcsh:T Izod impact strength test old newspaper 021001 nanoscience & nanotechnology 0104 chemical sciences laminated chemistry Creep lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 polypropylene
Zdroj:	Materials Volume 13 Issue 2 Materials, Vol 13, Iss 2, p 413 (2020)
ISSN:	1996-1944
DOI:	10.3390/ma13020413
Popis:	Waste newspaper are currently used in a single way and have low utilization rates. In this paper, the optimal process of preparing environmentally friendly layered composites by using waste newspaper combined with polypropylene film lamination was studied. The effects of hot-pressing temperature, hot-pressing time and paper content on the properties of the composites were analyzed. The results showed that under the process conditions of hot-pressing temperature 180 ° C, compression time 20 min and paper content 66.7%, the obtained composite material had a flexural strength of 126 MPa, a tensile strength of 95 MPa, an impact strength of 5.3 kJ/m2 and a water absorption thickness expansion ratio of 3.2%. Tensile performance increased by 164% compared to the original waste newspaper. Compared to our previous work, the hot processing time had been cut in half and costs were lower. In terms of creep properties, the unrecoverable strain rate was reduced by 57.5% compared to pure polypropylene. The results show that the material can maintain excellent flexural strength, tensile strength and water absorption performance while making good use of waste newspaper.
Databáze:	OpenAIRE
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