丁羟衬层固化过程实时监测方法  

A method for monitoring the curing process of HTPB liner in real-time

作　　者：杨亚军[1] 王召巴[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051

出　　处：《固体火箭技术》2013年第6期842-846,共5页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(61201412);山西省青年科技研究基金(2012021011-5)

摘　　要：采用超声纵波反射技术和红外光谱法对丁羟衬层固化过程进行实时监测,根据衬层中纵波传播速度、声衰减系数以及红外光谱法测定的固化深度对衬层固化状态进行表征。结果表明,20℃和60℃固化温度下,随着衬层固化反应的进行,纵波传播速度均急剧减小后逐渐增大,声衰减系数均急剧增大后逐渐减小,红外光谱法测定的固化深度逐渐增大,完整反映了衬层不同固化状态,而且判定了衬层的"半固化"状态,超声监测结果与红外光谱法监测结果一致。To monitor the curing process of HTPB liner in real-time, ultrasonic longitudinal wave reflection technology and in- frared spectroscopy were adopted. Liner curing state was characterized by the change of longitudinal wave velocity, acoustic attenua- tion coefficient and curing degree determined by infrared spectroscopy. The experimental results show that with the liner curing reac- tion both at 20~C and 60 ~C, the acoustic attenuation coefficient decreases gradually after a sharp increase, while the longitudinal wave velocity is just the opposite, and the value of curing depth is getting bigger. Moreover, the results of ultrasonic monitoring and infrared spectroscopy can both reflect the liner curing state, especially determine the ＂half cure＂ state.

关 键 词：丁羟衬层 固化状态 超声纵波 红外光谱 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程] TB52[理学—物理]