Improved interfacial strength and ablation resistance of carbon fabric reinforced phenolic composites modified with functionalized ZrSiO4 sol

Xu, Feng; Zhu, Shizhen; Ma, Zhuang; Liu, Yanbo; Li, Hezhang; Hu, Jingdan

doi:10.1016/j.matdes.2020.108623

Cited by 26 publications

(9 citation statements)

References 28 publications

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“…The broad peak corresponds to the crystalline polymer on the carbon chain after curing [37]. After thermal degradation under argon, two broad peaks appear at a 2θ angle of 23.38 • and 44.10 • [38,39], corresponding to the (002) and (100) lattice planes for char (PDF26-1079). This reflects the fact that not only neat phenolic resin but also POSS modified phenolic resin has been charred by pyrolysis at high temperatures under argon.…”

Section: Degradation Residue Analysismentioning

confidence: 99%

Synthesis and Thermal Degradation Study of Polyhedral Oligomeric Silsesquioxane (POSS) Modified Phenolic Resin

et al. 2021

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In this paper, a new polyhedral oligomeric silsesquioxane containing a phenol group (POSS-Phenol) is prepared through the Michael addition reaction, which is added to the synthesis of phenolic resin as a functional monomer. Infrared spectroscopy (IR) is used to demonstrate the chemistry structure of the synthesized POSS modified phenolic resin. After introducing POSS into the resole, a comprehensive study is conducted to reveal the effects of POSS on the thermal degradation of phenolic resin. First, thermal degradation behaviors of neat phenolic resin and modified phenolic resin are carried out by thermogravimetric analysis (TGA). Then, the gas volatiles from thermal degradation are investigated by thermogravimetric mass spectrometry (TG-MS). Finally, the residues after thermal degradation are characterized by X-ray diffraction (XRD). The research indicates that POSS modified phenolic resin shows a better thermal stability than neat phenolic resin, especially at high temperatures under air atmosphere. On the one hand, the introduction of the POSS group can effectively improve the release temperature of oxygen containing volatiles. On the other hand, the POSS group forms silica at high temperatures under air, which can effectively inhibit the thermal oxidation of phenolic resin and make phenolic resin show a better high-temperature oxidation resistance.

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Section: Degradation Residue Analysismentioning

confidence: 99%

Synthesis and Thermal Degradation Study of Polyhedral Oligomeric Silsesquioxane (POSS) Modified Phenolic Resin

et al. 2021

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“…Therefore, solving the oxidation problem is the key to the use of carbon fiber-reinforced composites for high temperatures [ 26 , 27 , 28 ]. Feng Xu et al [ 29 ] prepared ZrSiO 4 sol and sprayed it on carbon fiber fabrics, improving the interfacial properties and the ablation resistance of the composites. Liuyang Duan et al [ 30 ] introduced polycarbosilane (PCS) as an interface layer onto carbon fiber, which effectively improved the performance of carbon fiber-reinforced phenolic resin composites (CPR) at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of Carbon Fibers in Ceramizable Phenolic Resin Matrix Composites at Elevated Temperatures

et al. 2022

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Carbon fiber fabric-reinforced phenolic resin composites are widely used as thermal protection materials for thermal protection systems in hypersonic vehicles and capsules. In this work, carbon fiber fabric-reinforced boron phenolic resin composites modified with MoSi2 and B4C were prepared via a compression molding technique. The high-temperature performance of the composites as well as the oxidation behavior of the carbon fibers was studied. The results indicate that the incorporation of B4C improves the performance of composites at high temperatures. The residual weight rate of composites with 15 phr B4C (BP-15) sufficiently increased from 23.03% to 32.91% compared with the composites without B4C (BP-0). After being treated at 1400 °C for 15 min, the flexural strength of BP-15 increased by 17.79% compared with BP-0. Compared with BP-0, the line ablation rate and mass ablation rate of BP-15 were reduced by 53.96% and 1.56%, respectively. In addition, MoSi2 and B4C particles had a positive effect on the oxidation of carbon fibers in the composites. After treatment at 1400 °C, the diameter of the as-received carbon fiber was reduced by 31.68%, while the diameter of the carbon fiber in BP-0 and BP-15 decreased by 15.12% and 6.14%, respectively. At high temperatures, the liquid B2O3 from B4C and MoSi2-derived complex-phase ceramics (MoB, MoB2, Mo2C, Mo4.8Si3C0.6) acted as an oxygen barrier, effectively mitigating the oxidation degree of the carbon fibers.

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“…The amount of charred matrix remaining on fiber surface is not very different from that in pristine sample however frozen droplets of alumina are visible (Figure 7(c) and (d)). Other than that, some degree of fiber oxidation has occurred as evident from pits and dents on the fiber surface as encircled in Figure 7(d) 58 Compared to pristine samples, damage mechanism in 2-ACP is evidently different. Contrary to fiber breakage, damage in 2-ACP has occurred due to oxidation which is not as severe as caused by fiber breakage.…”

Section: Ablation Mechanism and Microstructure Characterizationmentioning

confidence: 98%

Microstructural and thermal analysis of alumina modified carbon/phenolic composites after ablation testing

Ali

Ahmad

Baluch

et al. 2022

Journal of Composite Materials

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Thermal and ablative performance of alumina-modified carbon phenolic composites has been experimentally investigated. Pristine, 2, 4, and 6wt.% alumina particles modified composites were fabricated by hand layup followed by vacuum bagging process. Linear ablation rate was determined by the oxyacetylene flame test whereas thermogravimetric analysis determined thermal stability. Furthermore, SEM and EDS were done on ablated samples for morphological and elemental analysis whereas to determine individual phases, XRD was done. It was found that the addition of alumina initially at 2wt.% enhanced the ablation resistance but with further increase in the concentration of alumina above 2wt.%, ablation resistance decreased. Thermogravimetric analysis found that char yield of alumina-modified composites increased with an increase in alumina concentration.

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Improved interfacial strength and ablation resistance of carbon fabric reinforced phenolic composites modified with functionalized ZrSiO4 sol

Cited by 26 publications

References 28 publications

Synthesis and Thermal Degradation Study of Polyhedral Oligomeric Silsesquioxane (POSS) Modified Phenolic Resin

Synthesis and Thermal Degradation Study of Polyhedral Oligomeric Silsesquioxane (POSS) Modified Phenolic Resin

Oxidation Behavior of Carbon Fibers in Ceramizable Phenolic Resin Matrix Composites at Elevated Temperatures

Microstructural and thermal analysis of alumina modified carbon/phenolic composites after ablation testing

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