3D needle-punched carbon/quartz fabric reinforced nanoporous phenolic composites with co-optimized mechanics, insulation and ablation

Qian, Zhen; Cai, Hongxiang; Cao, Junxiang; Wang, Peng; Li, Liang; Cao, Yu; Zhang, Yayun; Niu, Bo; Long, Donghui

doi:10.1016/j.coco.2022.101393

Cited by 20 publications

(9 citation statements)

References 13 publications

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“…Therefore, the strengthening effect of the phenolic aerogel to RFC along the TT direction is more obvious than that along the IP direction. In addition, according to our previous research, phenolic composites will show a significant decline in mechanical properties above 575°C, which is their inherent characteristic 28 …”

Section: Resultsmentioning

confidence: 79%

“…Composites were prepared by immersing phenolic resin (laboratory synthesized) with a content of 15−45% by weight in rigid mullite fiber ceramic (Shandong Industrial Ceramics Research and Design Institute, Co., Ltd.) with the help of a vacuum pump and a metal mold. Thereafter, the samples were placed in a drying oven at 90°C for 24 h to perform the sol‐gel and curing gel reactions 24 …”

Section: Methodsmentioning

confidence: 99%

“…Thereafter, the samples were placed in a drying oven at 90 • C for 24 h to perform the sol-gel and curing gel reactions. 24…”

Section: Preparation Of Compositesmentioning

confidence: 99%

“…In addition, according to our previous research, phenolic composites will show a significant decline in mechanical properties above 575 • C, which is their inherent characteristic. 28…”

Section: Compressive Behaviors and Propertiesmentioning

confidence: 99%

“…and carbonize thermally into low-density carbon. 28 Additionally, the pyrolysis gases diffuse to the surface through the porous structure, which will contribute to carrying away the heat and lowering the surface temperature (Figure 7B). 29,30 The higher content of the phenolic resin in composites produces more pyrolysis gases and carries away more heat on the ablation surface, which leads to improved thermal insulation and antiablation performance.…”

Section: Thermal Insulation and Antiablation Propertiesmentioning

confidence: 99%

See 4 more Smart Citations

Co‐optimizing compressive and heat‐insulation properties of rigid fibrous ceramics by compositing with phenolic aerogel

Niu,

Cai,

Liu

et al. 2023

J Am Ceram Soc.

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Low compressive strength of rigid fibrous ceramics (RFC) greatly restricts their application as thermal protection materials. Traditional reinforcing method using ceramic aerogels shows low efficiency and impairs high‐temperature thermal‐insulation properties. Herein, a novel strategy is proposed to optimize compressive and high‐temperature thermal‐insulation performances of RFC enormously and synergistically using nanoporous phenolic aerogel as reinforcement and high‐temperature evaporative refrigerant. In‐situ X‐ray micro‐CT results reveal that phenolic aerogel can protect bonding areas and handle compressive deformation, thereby increasing compressive strength of RFC. What's more, the strengthening effect along practical application (through‐thickness) direction is more obvious than that along in‐plane direction. Ablation test results indicate that pyrolysis gas of phenolic will carry away surface heat, thus improving high‐temperature thermal‐insulation and anti‐ablation performances. The resulting mullite RFC with 45 wt.% of phenolic aerogel exhibits high compressive strength of 44.8 ± 1.1 MPa along through‐thickness direction, low backside temperature of 38.4°C under ablation temperature of 1500°C for 30 s. The idea and results will further advance the application of RFC in more extreme environments.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%

“…Thereafter, the samples were placed in a drying oven at 90 • C for 24 h to perform the sol-gel and curing gel reactions. 24…”

Section: Preparation Of Compositesmentioning

confidence: 99%

“…In addition, according to our previous research, phenolic composites will show a significant decline in mechanical properties above 575 • C, which is their inherent characteristic. 28…”

Section: Compressive Behaviors and Propertiesmentioning

confidence: 99%

Section: Thermal Insulation and Antiablation Propertiesmentioning

confidence: 99%

See 3 more Smart Citations

Co‐optimizing compressive and heat‐insulation properties of rigid fibrous ceramics by compositing with phenolic aerogel

Niu,

Cai,

Liu

et al. 2023

J Am Ceram Soc.

Self Cite

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show abstract

Experimental study on mechanical responses of 3D needle‐punched composite preforms at different needling densities: Failure structures, tensile and interlayer peeling strengths

Han,

Wang,

et al. 2024

Polymer Composites

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In this study, needle‐punched quartz fiber felt / fabrics preforms (NQFFPs) with a wide needling densities (NDs) range from 70 to 280 punches/cm2 were manufactured, then the inner correlation among the NDs, mechanical properties and structural failure modes were studied and revealed. Firstly, the effects of NDs on mechanical strengths, which included tensile and interlayer peeling strengths of NQFFPs, were analyzed through experimental methods. Moreover, MATLAB software was applied to fit the NDs‐mechanical strength curves, then best fitting equations were defined to characterize the change rules between NDs and mechanical strengths. Additionally, with NDs increment, tensile strengths decreased from 0.727 to 0.0925 MPa, whereas interlayer peeling strengths increased from 83.46 to 135.04 N/m. Afterwards, the 3D image technology was utilized to capture failure morphologies of NQFFPs at different NDs from tensile and interlayer peeling experiments, which furtherly revealed the failure mechanisms of NQFFPs at different NDs. This work is significant for the engineering manufacturing and application of needle‐punched preforms and the composites.Highlights Failure structure characteristics of NQFFPs at different NDs were captured. Change rules between NDs and strengths were characterized by math equations. The correlation among NDs, fracture morphologies and strengths was revealed.

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Micromechanics of Thermal Conductive Composites: Review, Developments and Applications

Wang,

Huang,

Gao

et al. 2024

Acta Mech. Solida Sin.

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3D needle-punched carbon/quartz fabric reinforced nanoporous phenolic composites with co-optimized mechanics, insulation and ablation

Cited by 20 publications

References 13 publications

Co‐optimizing compressive and heat‐insulation properties of rigid fibrous ceramics by compositing with phenolic aerogel

Co‐optimizing compressive and heat‐insulation properties of rigid fibrous ceramics by compositing with phenolic aerogel

Experimental study on mechanical responses of 3D needle‐punched composite preforms at different needling densities: Failure structures, tensile and interlayer peeling strengths

Micromechanics of Thermal Conductive Composites: Review, Developments and Applications

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