MECHANICAL PROPERTIES OF T700 CARBON FIBER/CYANATE ESTER COMPOSITES FABRICATED BY WETTING WINDING

Abstract

Abstract: This article was to investigate the mechanical properties of T700 carbon fiber/cyanate ester resin (T700/CE) naval ordnance laboratory (NOL) rings and unidirectional laminate composites which were fabricated by wetting winding process. The relationship of viscosity with temperature of the formula was characterized. Mechanical properties of NOL rings composites including tensile strength, shear strength were measured. The damage morphology of tensile specimen was observed by scanning electron microscopy (SEM). Mechanical properties of unidirectional laminate composites including longitudinal tensile property, flexural property, interlaminar shear strength (ILSS) at room temperature and flexural property at high temperature were measured. The results show that the viscosity of the formula is 800 cps at 25 ℃, which indicates that the formula can be used to wetting winding process directly at room temperature. Meanwhile, the pot life is adequate. The tensile strength of NOL rings is 2220 MPa and the shear strength is 56.8 MPa. The CE matrix has good infiltration to carbon fiber. The high strength property of the carbon fiber can be better expressed. The high temperature mechanical properties of T700/CE unidirectional laminate composites is superior. The retention rate of flexural property at 200 ℃ is 60.4%, and the retention rate is 45.2% at 250 ℃.

Key words: cyanate ester resin, wetting winding, composites, mechanical properties

CLC Number:

TB332

ZHAO Kai, GAO Wei, CHEN Shu-hua. MECHANICAL PROPERTIES OF T700 CARBON FIBER/CYANATE ESTER COMPOSITES FABRICATED BY WETTING WINDING[J]. Fiber Reinforced Plastics/Composites, 2019, 0(2): 91-95.

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