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

1
College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
2
College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830025, China
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(2), 413; https://doi.org/10.3390/ma13020413
Received: 3 December 2019 / Revised: 8 January 2020 / Accepted: 10 January 2020 / Published: 16 January 2020
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. View Full-Text
Keywords: old newspaper; polypropylene; laminated; composites; mechanical properties old newspaper; polypropylene; laminated; composites; mechanical properties
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MDPI and ACS Style

Guan, N.; Hu, C.; Guan, L.; Zhang, W.; Yun, H.; Hu, X. A Process Optimization and Performance Study of Environmentally Friendly Waste Newspaper/Polypropylene Film Layered Composites. Materials 2020, 13, 413.

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