对比研究了F2311、F2314和Estane5703粘结剂的粘弹性能和准静态拉伸、压缩力学性能.利用修正的"朱-王-唐"非线性粘弹性本构关系描述了粘结剂拉伸屈服前的力学响应.结果表明,弹性模量关系为F2314＞F2311＞Estane5703;拉伸断裂强度关系为F2314＞Estane5703＞F2311;拉伸断裂延伸率关系为F2311＞Estane5703＞F2314.总的来说,F2311与Estane5703性能比较接近,而F2314与前两者相差较大.Estane5703具有介于F2311和F2314之间的断裂强度和韧性,是很好的粘结剂.研究结果为PBX炸药配方设计中粘结剂材料的选择提供了重要的依据.
The viscoelastic properties and quasi-static mechanical properties of three kinds of binders named F2311 and F2314 and Estane 5703 are studied and comparatively.The mechanical resporise of binders in tensile yield period is described by modified ZWT constitutive equation and viscoelastic parameters are obtained by curve fitting.The results show that the modulus comparative analysis iS F2314＞F2311＞Estane5703,and the tensile strength comparative analysis iS F2314＞Estane5703＞F2311,and the tensile strain at break comparative analysis is F2311＞Estane5703＞F2314.In all,the mechanical properties of F2311 and Estane5703 are similar but F2314 is obviously different.Estane5703 iS a good binder.The result can provide some scientific base formular design.
参考文献
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