Thermal Protection of Carbon Fiber-Reinforced Composites by Ceramic Particles

Abstract

Abstract:The thermal barrier efficiency of two types of ceramic particle, glass flakes and aluminum titanate, dispersed on the surface of carbon-fiber epoxy composites, has been evaluated using a cone calorimeter at 35 and 50 kW/m 2 , in addition to temperature gradients through the samples' thicknesses, measured by inserting thermocouples on the exposed and back surfaces during the cone tests. Two techniques of dispersing ceramic particles on the surface have been employed, one where particles were dispersed on semi-cured laminate and the other where their dispersion in a phenolic resin was applied on the laminate surface, using the same method as used previously for glass fiber composites. The morphology and durability of the coatings to water absorption, peeling, impact and flexural tension were also studied and compared with those previously reported for glass-fiber epoxy composites. With both methods, uniform coatings could be achieved, which were durable to peeling or water absorption with a minimal adverse effect on the mechanical properties of composites. While all these properties were comparable to those previously observed for glass fiber composites, the ceramic particles have seen to be more effective on this less flammable, carbon fiber composite substrate.

Improvements of Arboblend V2 Nature Characteristics through Depositing Thin Ceramic Layers

“…In addition, another area targeted by coating researchers is related to composites based on polymer matrices with the inclusion of magnetic nano-sized particles: Polydimethylsiloxane (PDMS) coated with different concentrations of nanosized Ni@C core-shell [18]; Ni-silicone elastomagnetic composites [19]; polyacrylamide-based hydrogels coated with Ni ferrite [20]; polyetherurethane (TFX) and a biodegradable multiblock copolymer (PDC) with poly(p-dioxanone) as hard segment and poly(ε-caprolactone) as soft segment were investigated as matrix component, coated with iron oxide particles [21]; and oligo(εcaprolactone)dimethacrylate/butyl acrylate, coated with Fe 3 O 4 [22]; carbon-fiber-epoxy composites coated with two thermal ceramic particles (lass flakes and aluminum titanate) in order to create a thermal barrier for the substrate [23]. The interest of researchers was focused mainly on elastomagnetic effects [19] and the wide prospects of applications as follows: Ni ferrite with a highly organized structure as humidity sensors [20]; magnetic nanoparticles for practical applications which involve sensors and biosensors [24]; magnetoresistive sensors for applications where the ultimate field detection limits are required or as readers in hard disk drives [25]; Mg substitution on Ni-ferrite ceramics with applications in biomedicine, gas detection, heterogeneous catalysis, adsorption, etc.…”

Structural Performance of Chemically Modified Natural Jute Yarn for Strength Demanding Composite Applications

“…(Orue et al 2015) However, AT jute yarns show a reduction in the onset decomposition temperature to ~272 o C and increase in the end-set decomposition to ~356 o C ( Figure 2h and Table S3, Supporting Information), may be due to the removal of polysaccharides, and the increment of crystallinity for the alkali-treated AT jute yarns. (Sarker et al 2018) In addition, the higher percentage of residues in the AT yarns indicate the improvement of thermal stability of the fibre (Kandola et al 2016). Both ATG and UTG yarn show significant improvement in the on-set and end-set decomposition temperature of the jute yarns.…”

Fabrication and Characterization of Carbon-Fiber-Reinforced Polymer–FeSi Composites with Enhanced Magnetic Properties

“…Halil et al have found that the dynamic impact damage resistance [ 17 ] and the tensile strength [ 18 ] of the CFRP composites can be improved by reinforcing then with up to 2 wt.% of alumina (Al 2 O 3 ) nanoparticles in an epoxy resin matrix. Ceramic particles (glass flake and aluminum titanate) were coated on the CFRP substrate to act as thermal barrier and to improve the fire performance of the carbon-fiber-reinforced polymer composites [ 19 ].…”