Tuning interfacial strength of silicone resin composites by varying the grafting density of octamaleamic acid-POSS modified onto carbon fiber

Zhang, Chunxu; Wu, Guangshun; Jiang, Hua

doi:10.1016/j.compositesa.2018.04.008

Cited by 59 publications

(26 citation statements)

References 31 publications

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“…The unidirectional prepreg of the fiber and matrix used to manufacture CF/UPR composites was first prepared as described in great detail in a previous work [34]. Then, the prepreg was added into a mold for preparing unidirectional composites on a hot press machine based on a compression molding method.…”

Section: Preparation Of Cf/upr Compositesmentioning

confidence: 99%

Modification of Renewable Cardanol onto Carbon Fiber for the Improved Interfacial Properties of Advanced Polymer Composites

et al. 2019

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A facile in situ polymerization was developed for grafting renewable cardanol onto the carbon fiber (CF) surfaces to strengthen the fiber-matrix interface. CFs were chemically modified with hydroxyl groups by using an aryl diazonium reaction, and then copolymerized in situ with hexachlorocyclotriphosphazene (HCCP) and cardanol to build cardanol-modified fibers (CF-cardanol). The cardanol molecules were successfully introduced, as confirmed using Raman spectra and X-ray photoelectron spectroscopy (XPS); the cardanol molecules were found to increase the surface roughness, energy, interfacial wettability, and activity with the matrix resin. As a result, the interlaminar shear strength (ILSS) of CF-cardanol composites increased from 48.2 to 68.13 MPa. In addition, the anti-hydrothermal ageing properties of the modified composites were significantly increased. The reinforcing mechanisms of the fiber-matrix interface were also studied.Polymers 2020, 12, 45 2 of 11 important factors, such as interfacial wettability, the introduced mechanical interlocking, and the formed chemical bonding at the interface [26]. In a word, the formed chemical bonding between CFs and the matrix resin promotes the largest share of composite interface improvements.Cardanol, which is extracted from cashew nut shell liquid using a double vacuum distillation technique, is known as a significant agricultural renewable resource [27][28][29][30]. Cardanol, with a reactive phenolic moiety and an unsaturated C15 hydrocarbon chain, can easily form cross-linked structures under a thermal curing treatment, which is viewed as a robust platform for further grafting for multifunctional applications in the fields of coatings, biocomposites, curing agents, and antioxidants owing to its sustainability, low cost, large availability, and bactericidal properties [31,32]. We believe that this is the first report of a new hierarchical reinforcement that has been surface-modified with cardanol for changing the surface/interface properties. Herein, we developed a high-efficiency strategy for functionalizing CFs with renewable cardanol and studied the interfacial behaviors and the mechanisms of reinforcing, as well as toughening the interface for unsaturated polyester resin (UPR) composites. The active sites were built onto CF surfaces by using the diazonium technique, avoiding a strong acid oxidation treatment. As an agricultural renewable resource, cardanol is cost-effective, highlighting the potential of the strategy for practical applications. Moreover, the chemical bonding easily formed at the interface between CF-cardanol and UPR during the curing process, which played the most important role in enhancing the composite's interfacial properties. The preparation and characterization of CFs functionalized with cardanol and the resultant composites were fully studied, as discussed in this work.

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Section: Preparation Of Cf/upr Compositesmentioning

confidence: 99%

Modification of Renewable Cardanol onto Carbon Fiber for the Improved Interfacial Properties of Advanced Polymer Composites

et al. 2019

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“…Unfortunately, a weak quality of interface restricts the application of CFs composites owing to fiber nonpolar and smooth graphitic surfaces . Hence, fiber surface treatment with the aim of changing the CFs surface from chemical inert to active has attracted tremendous interest …”

Section: Introductionmentioning

confidence: 99%

Chemical modification of carbon fiber with diethylenetriaminepentaacetic acid/halloysite nanotube as a multifunctional interfacial reinforcement for silicone resin composites

Zheng

Wang

2019

Polymers for Advanced Techs

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In the present research, a multifunctional hierarchical reinforcement was prepared by chemical modification of carbon fibers (CFs) with halloysite nanotubes (HNTs) by the bridging diethylenetriaminepentaacetic acid (DTPA) for improving interfacial microstructures and properties of composites. Surface structures and groups of modified HNTs and CFs were characterized systematically. The uniform distributions of the introduced DTPA and HNTs helped to increase fiber polarity, surface energy, and wettability. As a consequence, significant enhancements of interfacial properties and hydrothermal aging resistance of composites were achieved, and interfacial reinforcing mechanisms have also been studied. Moreover, the storage modulus showed a 17.95% improvement, and the glass transition temperature was enhanced by 17°C by dynamic mechanical analysis testing.

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“…Grafting of active nanoparticles onto the surface of CFs could improve fiber surface wettability, nanoscale roughness and reactivity, and thus enhance interfacial strength of composites . Particularly, polyhedral oligomeric silsesquioxanes (POSS) with the unique structure and excellent mechanical properties have been widely grafted onto the fiber surfaces to change the wettability and interfacial adhesion between CFs and matrix resin .…”

Section: Introductionmentioning

confidence: 99%

Facile preparation of hyperbranched polysiloxane‐grafted carbon fibers with improved interfacial strength of silicone resin composites

Liu

2019

Polymer Composites

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New hybrid carbon fibers (CFs) were facilely prepared via in situ synthesizing hyperbranched polysiloxane with epoxy groups onto the fiber surface with the aim to enhance interfacial strength of composites. CFs were grafted with phenyl amine groups through an aryl diazonium reaction, and then modified with hyperbranched polysiloxane obtained by the sol-gel polymerization of γ-glycidyloxypropyltrimethoxysilane. Surface structures of different CFs were characterized by Raman spectroscopy and X-ray photoelectron spectroscopy, indicating the successful modification. The introduced hyperbranched polysiloxane enhanced fiber roughness, polarity, wettability, and surface free energy. Hence, the interfacial shear strength and impact toughness of polysiloxane modified composites (CF-g-Polysiloxane) increased sharply compared with those of untreated composites. Moreover, Interfacial reinforcing and toughening mechanisms have also been studied, and polysiloxane modification maintained fiber tensile strength. The obvious improvement of anti-hydrothermal aging behaviors after modification could be due to the introduction of strong Si O Si bonds at the interface.

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Tuning interfacial strength of silicone resin composites by varying the grafting density of octamaleamic acid-POSS modified onto carbon fiber

Cited by 59 publications

References 31 publications

Modification of Renewable Cardanol onto Carbon Fiber for the Improved Interfacial Properties of Advanced Polymer Composites

Modification of Renewable Cardanol onto Carbon Fiber for the Improved Interfacial Properties of Advanced Polymer Composites

Chemical modification of carbon fiber with diethylenetriaminepentaacetic acid/halloysite nanotube as a multifunctional interfacial reinforcement for silicone resin composites

Facile preparation of hyperbranched polysiloxane‐grafted carbon fibers with improved interfacial strength of silicone resin composites

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