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- Title
Influence of water absorption track and pre-drying treatment on the long-term hydrothermal aging behavior of recycled jute fabric-reinforced composites.
- Authors
Ying Yu; Defang Zhao; Lichao Yu; Tianxiang Ren; Hiroyuki Hamada
- Abstract
Corrosion resistance and durability are always considered in the safety design of composite materials. In this study, recycled jute woven fabrics from coffee bags were used to fabricate jute/unsaturated polyester composites. The effect of water absorption and pre-drying treatment on the long-term hydrothermal aging behavior of the prepared composites, as well as the aging mechanism, was discussed. The hydrothermal aging test was performed at a fixed temperature of 80°C for specified conditioning times of 24, 120, 240, 480, and 720 h. Weight gain and weight loss values were recorded and compared. The mechanical properties were evaluated using a three-point bending test and observations of the fracture area. The results showed similar water uptake and flexural behaviors between the composites with different pre-drying treatments, especially after long-term hydrothermal aging. It was also found that the moisture diffusion of the composite followed a Fickian process, and the flexural properties of the bending specimens at every position reduced with the aging time and initially decreased rapidly during the first 24 h of aging. In particular, the reduction rate in flexural properties generally followed the sequence of NO.1 > NO.2 > NO.6 > NO.5. Additionally, the aging mechanism study revealed three steps for the composites during the water absorption process. The inclusion of jute fiber as a composite material in this research provides insight into the water-absorption mechanism of jute fabric-reinforced polymer composite (JFRP). Highlights • Recycled jute fabric-reinforced composites were produced using jute fabrics obtained from recycled coffee bags. • The effect of the water absorption track and pre-drying treatment on the long-term hydrothermal aging behavior of recycled jute fiber-reinforced composite and its aging mechanism is discussed. • The clarification of the aging mechanism indicates that there are three steps involved in the water absorption process. • Considering jute fiber as a composite could help explain the water-absorbing mechanism of JFRP.
- Subjects
DRYING; UNSATURATED polyesters; JUTE fiber; FIBROUS composites; WEIGHT gain; ABSORPTION; NATURAL fibers; COMPOSITE materials
- Publication
Polymer Composites, 2024, Vol 45, Issue 4, p2927
- ISSN
0272-8397
- Publication type
Article
- DOI
10.1002/pc.27959