火炸药学报2023，Vol.46Issue(11)：1007-1013,7.DOI:10.14077/j.issn.1007-7812.202303035
丁羟推进剂的流变性能
Rheological Properties of HTPB Propellant Slurry
杜幸 1刘晋湘 1陈江波 1王斐 1邓海娟 1王佩 1王亚微 1姬小亚 1张维海1
作者信息
- 1. 西安北方惠安化学工业有限公司,陕西西安 710302
- 折叠
摘要
Abstract
The viscosity,yield stress and thixotropy of two typical hydroxyl terminated polybutadiene(HTPB)propellants(low burning rate and medium burning rate)slurries were analyzed by the rotational rheometer.The combined rheometer-infrared spectrometer was adopted to characterize the histories of rheological properties with time of the two slurries and the infrared spectra of the slurries at different curing time.The dynamic thermomechanical analyzer and electronic material testing machine were used to test the dynamic and static mechanical properties of the cured grain column.The results show that viscosity of low burning rate propellant and medium burning rate propellant at the shear rate of 1 s-1 were 621.6 Pa·s and 1 061 Pa·s respec-tively,and the thixotropy values were 124.4 Pa/s and 139.2 Pa/s respectively,indicating that the viscosity and the thixotropy at low burning rate is small.The gel times of low burning rate and medium burning rate propellants are 13 h and 19 h respec-tively,indicating that the curing reaction speed of low burning rate propellant is faster;the a transition peak temperatures of low burning rate and medium burning rate propellants are 26.2 ℃ and-1.3 ℃,p transition peak temperatures(glass transi-tion temperatures)are-60.9 ℃ and-57.7 ℃ respectively.The maximum tensile strength(σm)are 1.01 MPa at 20 ℃,the maximum elongation at break(εm)are 58.4％and 43.8％respectively;σm are 2.58 MPa and 2.63 MPa at-40 ℃,and em are 69.7％and 48.3％respectively,showing that the mechanical properties of low burning rate propellant is better than those of medium burning rate propellant.关键词
物理化学/丁羟推进剂/HTPB/推进剂料浆/流变性能/力学性能Key words
physcial chemistry/hydroxyl terminated polybutadiene propellant/HTPB/propellant slurry/rheological properties/mechanical properties分类
军事科技引用本文复制引用
杜幸,刘晋湘,陈江波,王斐,邓海娟,王佩,王亚微,姬小亚,张维海..丁羟推进剂的流变性能[J].火炸药学报,2023,46(11):1007-1013,7.
