Progress in Research on Ablative Material Resins with High Carbonization Rate

Ablation-resistant materials play an important role in the defense industry,carbon-based ablative material is a kind of material which uses the feature that the carbonization of polymer material at high temperature can absorb heat.General requirements for resin-based ablative material are high molecular weight,high-arylation,high crosslinking density and high C / O ratio,so that the carbonization rate of materials can be higher after ablation.Material ablation rate is inversely proportional to the carbonization rate.The resin which has higher carbonization rate will possess better resistance to ablation.The carbonization rates of material are mainly determined by the chemical structure of resin.At present,the research trends of ablative material are summarized as follows: high carbonization rate,large specific heat capacity,low thermal conductivity,small density,carbon layer with high strength and high thermal decomposition temperature.The recent studies are summarized,such as on the synthesis of modified phenolic resin: phenolic triazine resin,boron phenolic resin and polyarylacetylene resin,ablation performance and high carbonization rates.And the future research on ablative material is prospected.