The comparison of FD catalyst with the oversea commercial catalysts shows that FD catalyst has good initial activity and excellent thermal aging resistance.

将FD三效催化剂与国外现有的商品催化剂进行了比较，结果表明FD催化剂具有良好的初活性和优异的高温耐老化性能。

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Based on asphalt, some structural modifiers were used to develop the sealing agent for the enhancement of the thermal stability, cohesion and aging resistance.

本文以沥青为基料，采用结构改性剂，研制了具有优良热稳定性、粘着力及耐老化性能好的封口剂。

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