SAMPE Journal - November/December 2021 - 70
FEATURE
Composites from
Prepregs
Development of Composites from Prepregs of
Recycled PPS/PTFE Hot Gas Filters
Ruirui Qi1,2
, Tong Zhang1,2
, Hui Xu4, Guanchen Zhou4, Wanshuang Liu3, Yi Wei3, Yiping Qiu1,2
, Qiuran Jiang1,2
1 Key Laboratory of Textile Science &Technology, Donghua University, Shanghai, China
2 Department of Technical Textiles, College of Textiles, Donghua University, Shanghai, China
3 Donghua University Center for Civil Aviation Composites, Donghua University, Shanghai, China
4
Anhui Yuanchen Environmental Protection Science and Technology Co. Ltd., Anhui, China
Email: jj@dhu.edu.cn
ABSTRACT
T
he dispose of waste hot-gas bag filters has been a growing public concern
due to the fast augment in amounts and its high pollutive feature. The main
recycling approaches include dissociation or decomposition of waste filters which are
complicated in processing and high in cost. This work raised a strategy by turning the
waste polyphenylene sulfide/polytetrafluoroethylene filters (PPF) into prepregs and
using as the reinforcement or binding layers in composites. The developed composites
with merely two layers of PPF prepregs could achieve a flexural strength of 27.35 MPa
and an interlaminar shear strength of 28.72 MPa. By incorporating GF or CF skin layers,
the flexural and shear strengths of composites raised to 181.81 and 43.81 MPa. The
honeycomb core PPF composites were able developed with increased thickness and
limited addition in weight. The used PPF composites with and without honeycomb
cores exhibited excellent flame retardancy with high LOIs up to 38.3%. The low cost,
sufficient mechanical properties and flame retardant nature proved the potential of
these used filter composites to be applied in various high-profit fields. More importantly,
the water and soil pollutions, high energy consumption caused by the conventional
dispose or recycle approaches can be avoided.
70 | SAMPE JOURNAL | NOVEMBER/DECEMBER 2021
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SAMPE Journal - November/December 2021
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