A novel epoxy based coating designated as TR-48 is developed in house at Aerospace Research Insti
tute of Materials & Processing Technology. This material is composed of toughened epoxy binder for durable performance and is filled with special carbonate agent for improvement of ablation resistance. The TR-48 coating is evaluated
by mechanical property testing,thermal physics property testing,ablation testing,as well as batch stable testing. The
tensile strength is 8. 7 to 11. 2 MPa,elongation rate is 6. 8% to 12. 2%,mass retained in TG analysis at 800益is
51%,mass retained after 800益,5 min static ablation is 38% to 47%. It is also found that sinter reaction during 600
to 800益is the main reason which makes ablation resistance improved. Then the TR-48 is qualified by thermal testing
in a wind tunnel or under an oxygen kerosene engine to simulate the hypersonic aerodynamic heating and exhaust erosion. This material is characterized by excellent thermal protection performance and good ablation resistance.