无机填料浓度对端羟基聚丁二烯弹性的影响

EFFECT OF INORGANIC FILLER CONCENTRATION ON ELASTICITY OF HYDROXY-TERMINATED POLYBUTADIENE

关键词:  端羟基聚丁二烯推进剂  推进剂氧化剂  力学性质  聚丁二烯橡胶  弹塑性  弹性力学

Key words:  Hydroxy terminated polybutadiene propellant  Propellant oxidizer  Mechanical property  Polybutadiene rubber  Elasloplasticity  Elastic mechanics

摘要:

本文研究了无机填料NH₄Cl0₄（AP）的浓度对端羟基聚丁二烯（HTPB）单轴拉伸的应力-应变特性、拉伸强度、断裂伸长和拉伸模量的影响.根据Mooney-Revilin方程和非高斯链的弹性统计理论,提出了填充弹性体的半经验交联-缠结-非高斯链三相网络模型.理论计算与实验结果基本一致.用扫描电子显微镜观察了试样断裂面的形态,证实了实验的结论.

Abstract:

The effects of NH4C104concentration on stress-strain behavior,tensile atrength, elongation,tensile moduli of hydroxy-terminated polybutadiene are inve-stgated in this paper.Based on Mooney-Revilin equation and theory of non-Gaussian statistics a semiempirical crosslink-entanglement-non-Gaussian-chain model of filling elastomers is presented. The calculation results are in accordance with the experimental results well.The rupture formations of samples photographed by electronic-scanning microscope corroborate the experimental results.