EFFECTS OF THERMAL AGING ON THE PROPERTIES AND LIFETIME PREDICTION OF HYDROXYL-TERMINATED POLYBUTADIENE
EFFECTS OF THERMAL AGING ON THE PROPERTIES AND LIFETIME PREDICTION OF HYDROXYL-TERMINATED POLYBUTADIENE
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DOI：
10.1016/0032-3861(94)90380-8
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发表时间：
1994-01-01
期刊：
影响因子：
4.6
通讯作者：
AKSOY, S
中科院分区：
文献类型：
--
作者：
AKBAS, A;AKSOY, S
在50 ~ 100 ℃的不同温度下对端羟基聚丁二烯推进剂粘合剂进行了热老化试验。研究了该处理引起的熔体粘度、官能端基、分子量、拉伸强度、弹性模量和极限伸长率等性能的变化。随着老化温度的升高和老化时间的延长，粘度和平均分子量增加。观察到极限伸长率的降低和弹性模量的增加。用异氟尔酮二异氰酸酯固化端羟基聚丁二烯制备的基体的拉伸强度没有变化。根据Arabius方程的应用，预测可用性寿命为7年。
Thermal ageing of hydroxyl-terminated polybutadiene propellant binders was carried out at various temperatures between 50 and 100-degrees-C. The changes caused by this treatment in properties such as melt viscosity, functional end-groups, molecular weight, tensile strength, elastic modulus and ultimate elongation were examined. The viscosity and average molecular weight increased with the ageing temperature and ageing period. A decrease in ultimate elongation and an increase in elastic modulus were observed. Tensile strength of the matrices prepared by curing hydroxyl-terminated polybutadiene with isophorone diisocyanate did not change. Lifetime for usability was predicted from the application of the Arrhenius equation to be 7 years.