Hierarchical rigid porous composites towards impact resistance and fire safety

Shi, Yongqian; Huang, Ruizhe; Liu, Miao; Han, Junqiang; Xu, Peihui; Feng, Yuezhan; Fu, Libi; Yang, Fuqiang; Yu, Bin

doi:10.1016/j.compositesb.2023.111139

Cited by 6 publications

(4 citation statements)

References 54 publications

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“…The surface and interior morphologies of RPUF composites were observed by SEM, and the adhesion between the coatings and RPUF composites and their influence on the innermost foams were investigated. According to the previous research, the addition of CF has no effect on the morphology of RPUF, 8 thus only discussing the morphology of CRPUF. As shown in Figure 2a, CRPUF displays a smooth cellular morphology.…”

Section: Morphology and Structure Characterizationmentioning

confidence: 95%

“…7 For instance, Shi et al reported that multifunctional impact-resistant RPUF composites were prepared by a hierarchical construction strategy and found that the impact resistance and compressive resistance of the RPUF composite were significantly improved. 8 Additionally, the surface layer of the hierarchical RPUF composite plays a vital role in the impact resistance performance. It is reported that carbon fiber, filament, glass fiber, and some fibers or fabrics have a mechanical reinforcement effect on polyurethane foam (PUF).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the surface layer of the hierarchical RPUF composite plays a vital role in the impact resistance performance. It is reported that carbon fiber, filament, glass fiber, and some fibers or fabrics have a mechanical reinforcement effect on polyurethane foam (PUF). , Among them, carbon fiber fabric (CF) not only has the advantages of lightweight, corrosion resistance, good energy absorption, and outstanding penetration resistance but also can be firmly fixed on the foam surface through the adhesion of RPUF without affecting the foaming process and cell structure of the matrix. ,− Hence, CF is a promising candidate as the surface layer for improving the impact resistance of the RPUF composite.…”

Section: Introductionmentioning

confidence: 99%

“…Constructing a hierarchical structure is a facile and effective method to enhance the impact resistance of RPUF composites . For instance, Shi et al reported that multifunctional impact-resistant RPUF composites were prepared by a hierarchical construction strategy and found that the impact resistance and compressive resistance of the RPUF composite were significantly improved . Additionally, the surface layer of the hierarchical RPUF composite plays a vital role in the impact resistance performance.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fabrication of Fire-Retardant and Impact-Resistant Hierarchical Rigid Porous Composites via Surface Coating Strategy

Liu,

Huang,

Shi

et al. 2024

ACS Appl. Polym. Mater.

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Section: Morphology and Structure Characterizationmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication of Fire-Retardant and Impact-Resistant Hierarchical Rigid Porous Composites via Surface Coating Strategy

Liu,

Huang,

Shi

et al. 2024

ACS Appl. Polym. Mater.

Self Cite

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Preparation of bio‐based soybean oil polyol modified 3630 polyol‐based rigid polyurethane foam and its improved thermal stability, flame retardant, and smoke suppression performances

Zhang,

Wang,

Sun

et al. 2024

Polymers for Advanced Techs

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Rigid polyurethane foam (RPUF) with 3630 polyol‐based components was modified using bio‐based soybean oil (SO) polyol. The effects of soybean oil polyol on the thermal stability, flame retardant and smoke suppression performances of the modified RPUFs were investigated by thermogravimetric analysis, integral programmed decomposition temperature (IPDT), pyrolysis kinetic analysis, limiting oxygen index, conical calorimetry and smoke toxicity analysis. The results indicated that the RPUF‐SO2 (10 wt% soybean oil polyol) had the highest thermal decomposition rate temperature, initial thermogravimetric temperature, termination temperature, residual rate, IPDT and activation energy. Under various circumstances, the total heat release (THR) of RPUF‐SO2 was 1.41, 1.61, and 2.51 MJ/m2, respectively, and the peak heat release rate (PHRR) was lowered by 22.40%, 45.68%, and 19.86% in comparison to the original RPUF‐0. In the meantime, RPUF‐SO2 had the best light transmittance (57.20 and 60.60%), the lowest toxic gas emissions (0.31, 0.44, and 0.38 kg/s), and the lowest Ds (32.46 and 29.07). It also had an excellent smoke suppression effect. According to the current study, RPUF‐SO2 performed better in terms of heat stability, flame retardancy and smoke suppression. This made it a good benchmark for further bio‐based soybean oil polyol modified RPUFs.

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Enhanced mechanical property and flame retardancy of halogen‐free PE/EVA composites through crosslinking and carbon fiber inclusion

Du,

Chen,

Chen

et al. 2024

Polymer Composites

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Due to the exceptional flame retardancy, environmental protection, cost‐effectiveness, and ease of processing, halogen‐free flame‐retardant polyethylene (PE) composites are attracting wide attention. However, the addition of halogen‐free flame retardants usually leads to significantly decreased mechanical properties of PE composites, which greatly limits its application. Herein, we report a halogen‐free flame‐retardant PE/ethylene‐vinyl acetate copolymer composite (PE/EVA) with excellent flame retardancy and mechanical properties by combining compatibilizer, crosslinking agent, and carbon fiber. The presence of compatibilizer not only improves the compatibility of halogen‐free flame retardants and matrix, but also interacts with the crosslinking agent to form a cladding structure on the surface of carbon fiber. The enhanced interaction between carbon fiber surface and matrix then results in significantly enhanced flame retardancy and mechanical properties of the composite. Specifically, adding 4 phr compatibilizer, 0.5 phr crosslinking agent, and 10 phr carbon fiber will lead to the halogen‐free flame‐retardant PE/EVA composite with a UL‐94 V‐1 level, limiting oxygen index of 27.1, and an increased tensile strength by 84.02% reaching 19.12 MPa. Moreover, further carbon fiber surface modification can further enhance the flame retardancy of the composite probably due to a synergistic flame‐retardant effect caused by the surface modified nitrogen and silicon elements. As a result, the composite achieves UL‐94 V‐0 level and the limiting oxygen index of 27.7 with well‐retained high tensile strength of 15.19 MPa. This work provides a practical strategy for enhancing the flame retardancy and mechanical property of PE‐based composite simultaneously.Highlights Compatibilizer interacts with crosslinking agent to form a cladding structure on the surface of carbon fiber. Crosslinking agent promotes the formation of chemical bonds between modified carbon fiber, compatibilizer, and matrix. Carbon fiber surface modification can enhance the flame retardancy of the composite due to the synergistic flame‐retardant effect.

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Hierarchical rigid porous composites towards impact resistance and fire safety

Cited by 6 publications

References 54 publications

Fabrication of Fire-Retardant and Impact-Resistant Hierarchical Rigid Porous Composites via Surface Coating Strategy

Fabrication of Fire-Retardant and Impact-Resistant Hierarchical Rigid Porous Composites via Surface Coating Strategy

Preparation of bio‐based soybean oil polyol modified 3630 polyol‐based rigid polyurethane foam and its improved thermal stability, flame retardant, and smoke suppression performances

Enhanced mechanical property and flame retardancy of halogen‐free PE/EVA composites through crosslinking and carbon fiber inclusion

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