Preparation and Properties of Phenolic Resin Impregnated Quartz Fiber Tile Ablative Composite

Abstract

To improve the heat absorbed and scattered properties of quartz fiber tile, porous phenolic resin impregnated quartz fiber tile composite for ablator and thermal insulator was prepared by impregnating the quartz fiber tile with ethanol solution of phenolic resin, and then drying and cured. The phenolic resin impregnated quartz fiber tile ablative composite is a new heat protection composite material with lower density, lower heat conductivity and low mass ablation. It can be used as the widespread thermal protection system of the aero craft in the high heat flux, high temperature and extreme condition. The thermal property and ablation property of the composites were studied respectively. The ablation property of PICA was evaluated by the oxyacetylene ablation experiment. The microstructure morphology of specimen before and after ablation was viewed by SEM. The thermogravimetric analysis of the ablator was taken from room temperature to 800°C.

Zero‐temperature‐coefficient of capacitance in BaTiO3/PI composite films using paraffin as barrier layer

“…In general, after the introduction of paraffin@Ba-TiO 3 nanofillers, the heat resistance properties of the composites have not been significantly affected, while the ablative property of the composites has increased due to the addition of inorganic filler. [25] XRD patterns of pure PI, pure BaTiO 3 and PI composites filled with various mass ratios of paraffin@BaTiO 3 nanoparticles are shown in Figure 4. Significantly, the pure PI presents a weak and broad peak centered at around 2θ = 19 , indicating the amorphous phase of the PI polymer chain.…”