Local structure and glass transition of polybutadiene up to 4 GPa.

LIQUIDS AND DISORDERED SYSTEMS 90 LOCAL STRUCTURE AND GLASS TRANSITION OF POLYBUTADIENE UP TO 4GPa

HIGH PRESSURE BEHAVIOR OF KCl: STRUCTURAL AND ELECTRONIC PROPERTIES

The high pressure behavior of the structural and electronic properties of KC1 is studied with use of the density functional pseudopotential method within local-density approximation. Atzero pressure, the rocksalt phase is found to be lower in energy than CsCl structure. However, we predict a phase transition into CsCI structure at a pressure of about 1.5 GPa. The calculated ground state pro...

Supported shock waves in hydroxyl - terminated polybutadiene melts : A large - scale

Submitted for the PSF13 Meeting of The American Physical Society Supported shock waves in hydroxyl-terminated polybutadiene melts: A large-scale molecular dynamics study MARKUS FROEHLICH, THOMAS SEWELL, DONALD THOMPSON, University of Missouri-Columbia — Hydroxyl-terminated polybutadiene (HTPB) melts subjected to supported shock loading were studied by non-reactive all-atom molecular dynamics (M...

بررسی راهکارهای بهبود خواص حرارتی و مکانیکی پلی‌یورتان‌های بر پایه گلایسیدیل آزید پلیمر(علمی-ترویجی)

Glycidyl azide polymer (GAP) is a unique elastomeric binder with high heat of formation and high density due to enhanced thermal and performance properties of composite solid propellants. However, GAP has high glass transition temperature and poor mechanical properties that are limited its application as a binder in a composite solid propellant. In this paper , the efforts carried out on modifi...

سنتز و مشخصه یابی نرم کننده های پر انرژی سازگار با HTPB

Hydroxyl terminated polybutadiene (HTPB) is the most important and versatile binder in composite solid propellant, But the immiscibility of this polymer with traditional energetic plasticizers is a disadvantage limits its application as a binder for compounding of high energy propellant. In this research, two types of energetic plasticizer, 2-ethylhexyl nitrate (2EHN) and 2-ethyl-2-buthyl-1, 3 ...