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- Title
Jute woven fabric modified by phosphorus‐containing organosilicon compound reinforced flame retardant polylactic acid composites with enhanced flame retardant and mechanical properties.
- Authors
Zheng, Ran; Chen, Yajun; Sun, Zhe; Zhang, Jian; Deng, Yaxin; Xu, Xueling
- Abstract
Balancing the flame retardant properties and mechanical performance is important for flame retardant composites. In this research, the polylactic acid (PLA)/fiber composite is prepared by treating jute woven fabric with phosphorus‐containing organosilicon compound (PCOC) and adding intumescent flame retardant (IFR) to PLA using a film‐stacking procedure, which is named flame retardant PLA (FRPLA)/PC‐F. The flame retardancy and mechanical properties of PLA/fiber composites were studied and analyzed. Mechanical/flame retardant index (M/F index) was developed to compare the comprehensive properties of the composites. The limited oxygen index (LOI) test results show the LOI value of FRPLA/PC‐F reaches 34.1%, 14.1% higher than untreated PLA/fiber composite (PLA/F). In the cone calorimeter test, the pk‐heat release rate (HRR) value of FRLA/PC‐F decreases from 549 to 388 kW/m2 compared with PLA/F. In addition, the char yield of FRPLA/PC‐F increases from 1.9% (PLA/F) to 18.6%. The scanning electron microscope images of the char yield for FRPLA/PC‐F obtained from cone calorimetry test shows a continuous network structure with the fibrous skeleton completely wrapping by the dense and uniform char layer, which plays a barrier effect that inhibits the release of volatile substance and the transfer of heat. Meanwhile, FRPLA/PC‐F exhibits 28% and 19% improvement in tensile strength and impact strength compared with PLA/F due to the boost of interfacial adhesion between fiber and PLA. The M/F index of FRPLA/PC‐F is 1.15, which is the highest among all the composites, proving the best comprehensive properties and practical applicability. The results in this manuscript above make a great development, which is attractive in the design of PLA/fiber composites with great comprehensive performance.
- Subjects
POLYLACTIC acid; FIREPROOFING agents; ORGANOSILICON compounds; FIREPROOFING; FLAMMABILITY; FIBROUS composites; JUTE fiber
- Publication
Polymers for Advanced Technologies, 2023, Vol 34, Issue 11, p3617
- ISSN
1042-7147
- Publication type
Article
- DOI
10.1002/pat.6162