Carbon fiber/epoxy composite materials cured thermally and with microwave irradiation

Sato, Kimiyasu; Hotta, Yuji

doi:10.1080/15685543.2015.988581

Cited by 20 publications

(4 citation statements)

References 16 publications

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“…The interfaces accompanied by tighter physical/chemical interactions yield improved mechanical properties of the whole CFRP composites. [ 3 ] Plenty of works endorsing the fiber/matrix interfacial interactions to enhance the composites utility via CF surface modifications have been reported. [ 4 ] CF surface wettability with polymer precursors or sizing agents plays a pivotal role in determining productivity of CFRP composites.…”

Section: Introductionmentioning

confidence: 99%

A feasibility study on direct measurements of interaction forces between carbon fiber surfaces and other substances

et al. 2020

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Mechanical properties of carbon fiber (CF) reinforced plastic composites are influenced by physicochemical interactions between CF surfaces and matrix polymers. Poor interfacial adhesion between CF surfaces and matrix polymer molecules caused by inertness of graphitic carbon still remains to be solved. Deeper comprehension of the interfacial properties would promote advancement of technologies enhancing the physicochemical interactions. Versatile methods for evaluation of CF surface properties along with interactions at the CF/polymer interface are required. In the present paper, we propose a method to measure interaction forces between CF surfaces and other substances with the aid of atomic force microscope (AFM). Small CF chips were mounted on AFM cantilevers to measure forces between the CF chip surfaces and other materials. Interaction forces between CF chips with/without ultraviolet generated ozone (UV-ozone) treatment and epoxy precursor molecules were monitored. It has been widely accepted that the UV-ozone treated CF surfaces exhibit superior affinity to organic molecules. Results of the interaction force measurements were consistent with the knowledge. This is the first paper reporting direct measurement of interaction forces between CF surfaces and other substances.

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Section: Introductionmentioning

confidence: 99%

A feasibility study on direct measurements of interaction forces between carbon fiber surfaces and other substances

et al. 2020

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“…Recently, microwaves are being used in various fields to heat materials . Attempts to heat CFRP composites via microwaves have been reported as well . Furthermore, CFs impregnated with polymers could be utilized as susceptors, or indirect heating media for microwave processing .…”

Section: Introductionmentioning

confidence: 99%

Ceramic molds suitable for rapid forming of CFRP composites via microwave irradiation

Shimamoto

Sato

Sugimoto

et al. 2019

Int J Applied Ceramic Tech

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Carbon fiber reinforced plastic (CFRP) composites have been considered quite eminent structural materials. For more extensive applications, however, more rapid forming methods of the CFRP composites are required. As for CFRP composites with thermoplastic matrices, microwave heating and pressing with ceramic molds should be promising. In the present work, zirconia molds with varied thermal conductivity were employed to give a desired shape to the CFRP composites heated with microwave irradiation. Experimental results showed that use of the zirconia molds with smaller thermal conductivity results in shorter necessary time for the forming process. Mechanism of the notable change in the heating efficiency is discussed as well. K E Y W O R D S

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“…Carbon fiber-reinforced plastic (CFRP) is widely used in the aerospace industry due to its high specific strength and stiffness. [1][2][3][4][5][6] Curing process plays an important role in the process of producing CFRP. Compared with other forming processes, the components produced by the autoclave molding process (AMP) have a uniform resin content and stable mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

“…There are several studies on the microwave curing of P Resin in CFRP. 5,[19][20][21][22][23][24] However, few of them considered the condition of microwave curing under high external curing pressure.…”

Section: Introductionmentioning

confidence: 99%

Effect of cure pressure on microstructure and interlaminar shear strength properties of carbon fiber–reinforced plastics with microwave curing

Chen

Zhan

et al. 2017

High Performance Polymers

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Under a given microwave curing process, different curing pressures were applied to the carbon fiber–reinforced epoxy resin pre-impregnated laminates. Nondestructive testing and microscopic analysis were used to assess the effect of curing pressure on the interlaminar shear strength (ILSS) of the carbon fiber–reinforced plastic (CFRP) laminates. Results showed that in the low curing pressure stage (below 0.4 MPa), the porosity and ILSS of the components were reduced substantially as the curing pressure increased. In the high curing pressure stage (above 0.4 MPa), the ILSS only increased by 2.2% or so and the porosity and ILSS were no longer sensitive to the pressure, which indicated there was a threshold value (0.4 MPa) of mechanical property for forming the CFRP by the microwave curing. Above the threshold value, the curing pressure should be sufficient to allow the volatile gases to dissolve in the resin, thereby eliminating the generation of voids fundamentally, and the effect of curing pressure on the quality of composites was becoming small. These results could give process engineers some basic references for eliminating the voids in the CFRP component, so that they could reach a balance between preserving the mechanical properties and reducing the curing pressure in a cost-effective way.

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Carbon fiber/epoxy composite materials cured thermally and with microwave irradiation

Cited by 20 publications

References 16 publications

A feasibility study on direct measurements of interaction forces between carbon fiber surfaces and other substances

A feasibility study on direct measurements of interaction forces between carbon fiber surfaces and other substances

Ceramic molds suitable for rapid forming of CFRP composites via microwave irradiation

Effect of cure pressure on microstructure and interlaminar shear strength properties of carbon fiber–reinforced plastics with microwave curing

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