Tensile Properties of Carbon Fiber Composites with Different Resin Compositions at Cryogenic Temperatures

Abstract

In this study, the tensile properties of carbon fiber reinforced polymer (CFRP) composites with different resin compositions were investigated in order to develop advanced composite materials for cryogenic use. Thermo-mechanical cyclic loading (up to 6 cycles) was applied to CFRP unidirectional laminate specimens from room temperature to −150 • C. Tensile tests were then performed at −150 • C using an environmental test chamber. In addition, matrix-dominant properties such as the transverse and in-plane shear characteristics of each composite model were measured at −150 • C to examine the effects of resin formulation on their interfacial properties. The tensile tests showed that the composite models with large amounts of bisphenol-A epoxy and CTBN modified rubber in their resin composition had good mechanical performance at cryogenic temperatures (CTs).

Influence of post curing on GFRP hybrid composite

“…The result showed that, the tensile strength decreased significantly with increasing temperature and remained almost stable after the polymer exceeds its glass transition temperature. On the other side, at cryogenic temperatures, it was shown that CFRP composites had better tensile properties [9]. The tensile properties of FRP composites have also been affected by curing temperature used during fabrication of composite materials.…”

A Study on the Degradation of Mechanical Properties for the Carbon Composite at a High Temperature and High Humidity of Environment

“…They can be produced in uniform thickness with high temperature and vacuum pressure while the additional autoclave pressure helps improve the quality of surface profile. And its high bonding strength between layers improves fiber volumetric rate and eases elimination of bubbles between materials [6].…”

Thermally induced stress analysis of composite/aluminum ring specimens at cryogenic temperature

“…DICY (aliphatic polyamine dicyandiamide) and DCMU (diuron) were incorporated as a hardener and an accelerator, respectively. In addition, CTBN-(carboxyl terminated butadiene acrylonitrile) modified rubber was added to the resin mixture as an additive to improve the fracture toughness at cryogenic temperatures [11].…”

“…To this end, composite/aluminum ring specimens were manufactured using carbon fiber and Type B epoxy resin which had been developed for cryogenic use [11]. In the experiments, thermal strains of the ring specimens were measured during cooling from RT to À150°C.…”