Strength and toughness of carbon fibers reinforced rigid polyurethane composites by adsorbing tannic acid and refining Ni grains on carbon fibers surface

Liu, Xiaojing; Li, Weiwei; Feng, Ming; Yang, Jie

doi:10.1002/pat.5088

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…Figure shows the surface functional groups of de-sized CF and CF-TA/POSS. De-sized CF displays a wide absorption band at 3300–3600 cm –1 , which is attributed to the −OH stretching vibrations and the N–H stretching vibrations. ,,− As for CF-TA/POSS, based on the original peaks of de-sized CF, new adsorption peaks at 1631, 1392, 1165, 1100, and 880 cm –1 are derived from the aromatic CC stretching vibration, −OH deformation vibration, C–N stretching vibration, Si–O–Si stretching vibration, and C–Si stretching vibration. ,,,, The appearance of CC and −OH new peaks is assigned to the characteristic bands of TA, and C–N, Si–O–Si, and C–Si peaks are derived from POSS–NH 2 . , These results suggest that both TA and POSS–NH 2 are successfully co-deposited on the fiber surface, making the fiber polarity elevated for infiltration between the fibers and the epoxy matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Tannic acid (TA) is a versatile coating platform for various surfaces as a multifunctional material due to its low cost, nontoxic nature, and sustainability. − In particular, TA is a kind of natural plant ingredient with abundant pyrocatechol and pyrogallol structures. − The highly active pyrogallol structure in TA can be cross-linked with amino-terminated substances under alkaline conditions to form a coating similar to polydopamine. , Zhang et al co-deposited tannic acid (TA) and aminopropyltriethoxysilane (APTES) on the CF surface, which introduced a large mass of amino groups and accelerated the chemical association between CF and the epoxy matrix, thus improving the interfacial properties of the composite. Chen et al co-deposited tannic acid (TA) and polyethyleneimine (PEI) in MWCNTs by a one-pot method.…”

Section: Introductionmentioning

confidence: 99%

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Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

Liu

Sheng

et al. 2022

Langmuir

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Designing and controlling the interfacial chemistry and microstructure of the carbon fiber is an important step in the surface modification and preparation of high-performance composites. To address this issue, a tannic acid (TA)/polyhedral oligomeric silsesquioxane (POSS) hybrid microstructure, similar to the topological structure, is designed on the fiber surface by one-pot synthesis under mild conditions. Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) show that the functionality and surface roughness of the fiber are significantly broadened. Correspondingly, the tensile strength (TS) of CF-TA/POSS100 and interlaminar shear strength (ILSS) of CF-TA/POSS100-based composites increased by 18 and 34%, respectively. Following that, a failure mechanism study is conducted to demonstrate the interphase structure containing TA/POSS, which is quite critical in optimizing the mechanical performance of the multiscale composites. Moreover, the strategy for the use of TA for constructing a robust coating to replace the traditional modification without affecting the fiber intrinsic strength is an improved design and provides a new idea for the development of high-performance composites.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

Liu

Sheng

et al. 2022

Langmuir

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“…Pure RPU and pristine CFs/RPU composites reference our previous work 23 . In this work, we use a special customized mold, and the quality of the polyurethane will be determined according to the size of the mold when preparing the spline.…”

Section: Methodsmentioning

confidence: 99%

The effects of string‐like copper plated short carbon fibers reinforced rigid polyurethane composites

Liu

Yang

et al. 2021

J of Applied Polymer Sci

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The performance of short carbon fibers (CFs) reinforced rigid polyurethane (RPU) composites is largely restricted by poor interfacial strength and damage‐tolerance. In order to optimize the performance of CFs/RPU composites, we prepared CFs with a new structure starting from the modified CFs morphology. In this paper, a new type of fiber morphology, which was string‐like copper‐plated CFs (string‐like Cu‐CFs) were prepared by the electrodeposition method. The structure of the string copper could increase the contact area of the CFs and the RPU matrix and mechanical interlocking. At the same time, the surface roughness of the CFs could be enhanced, thereby promoting the formation of irregular interfaces. Ordinary CFs composite materials showed the low strength and toughness, due to the more stress concentrations generated around the fiber ends. By adding string‐like Cu‐CFs into the RPU matrix, the pinning effect was achieved due to the special fiber structure, which improved the strength and toughness of the string‐like Cu‐CFs/RPU. Compared with pure RPU, the tensile strength, bending strength, and impact strength of string‐like Cu‐CFs/RPU composites were improved by 15.3, 148.3, and 171.4%, respectively. At the same time, the string‐like Cu‐CFs formed a more continuous conductive network inside the RPU matrix, which significantly improved the electrical conductivity of the composites.

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Flexible Composites of Barium Sulfate Modified by Tannic Acid Using Glycerol/Starch for X‐Ray Shielding Applications

Tokonami,

Osanai,

Hosoda

et al. 2024

Macro Chemistry & Physics

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This study investigates the X‐ray shielding properties and mechanical properties of barium sulfate (BaSO4) composites based on a biodegradable matrix composed of glycerol and starch. In addition, tannic acid (TA) is used for surface modification of the BaSO4. Increasing the amount of BaSO4 is necessary to improve the composite's X‐ray shielding properties; however, as the amount of BaSO4 increases, the composite becomes harder. The purpose of this research is to prepare a flexible X‐ray‐shielding composite even when a large amount of filler is added. TA easily coats the BaSO4 surface, and its presence is confirmed by Fourier transform infrared spectroscopy and thermogravimetric analysis. Elongation of the composites composed of glycerol, starch, and BaSO4 is increased by 50% because of the formation of hydrogen bonds between the hydroxyl groups of glycerol and starch and those of TA. Consequently, the fracture behavior changed from brittle fracture to ductile fracture. However, the X‐ray shielding properties are not changed by the surface modification with TA. The use of glycerol, starch, and BaSO4 is a new approach to the development of biodegradable radiation shielding materials. In addition, as a surface‐modification agent, TA is environmentally friendly. All of the composites are prepared from natural materials.

show abstract

Strength and toughness of carbon fibers reinforced rigid polyurethane composites by adsorbing tannic acid and refining Ni grains on carbon fibers surface

Cited by 5 publications

References 29 publications

Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

Polyhedral Oligomeric Silsesquioxane Encountering Tannic Acid: A Mild and Efficient Strategy for Interface Modification on Carbon Fiber Composites

The effects of string‐like copper plated short carbon fibers reinforced rigid polyurethane composites

Flexible Composites of Barium Sulfate Modified by Tannic Acid Using Glycerol/Starch for X‐Ray Shielding Applications

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