Qualification of Polymer Materials for High Pressure CO2 Flexible Pipe Structures

2013 ◽  
Author(s):  
Christian Wang ◽  
Adam Rubin ◽  
Nicolas Von Solms
Keyword(s):  
High Pressure ◽  
Polymer Materials ◽  
Flexible Pipe ◽  
High Pressure Co2

Green approach for fabrication of bacterial cellulose-chitosan composites in the solutions of carbonic acid under high pressure CO2

2021 ◽  
Vol 258 ◽  
pp. 117614
Author(s):  
Ilya V. Novikov ◽  
Marina A. Pigaleva ◽  
Alexander V. Naumkin ◽  
Gennady A. Badun ◽  
Eduard E. Levin ◽  
...  
Keyword(s):  
High Pressure ◽  
Bacterial Cellulose ◽  
Carbonic Acid ◽  
Green Approach ◽  
High Pressure Co2

An experimental study on the flow characteristics during the leakage of high pressure CO2 pipelines

2019 ◽  
Vol 125 ◽  
pp. 92-101 ◽  
Author(s):  
Shuaiwei Gu ◽  
Yuxing Li ◽  
Lin Teng ◽  
Cailin Wang ◽  
Qihui Hu ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
Flow Characteristics ◽  
High Pressure Co2

Cross-linked open-pore elastic hydrogels based on tropoelastin, elastin and high pressure CO2

Biomaterials ◽  
2010 ◽  
Vol 31 (7) ◽  
pp. 1655-1665 ◽  
Author(s):  
Nasim Annabi ◽  
Suzanne M. Mithieux ◽  
Anthony S. Weiss ◽  
Fariba Dehghani
Keyword(s):  
High Pressure ◽  
High Pressure Co2

Open and closed forms of the interpenetrated [Cu2(Tae)(Bpa)2](NO3)2·nH2O: magnetic properties and high pressure CO2/CH4 gas sorption

2018 ◽  
Vol 47 (3) ◽  
pp. 958-970
Author(s):  
Roberto Fernández de Luis ◽  
Edurne S. Larrea ◽  
Joseba Orive ◽  
Arkaitz Fidalgo-Marijuan ◽  
Luis Lezama ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Porous Structure ◽  
Open Form ◽  
Gas Sorption ◽  
Solvent Loss ◽  
High Pressure Co2 ◽  
Dynamic Aperture ◽  
Volume Cell

Cationic [Cu2(Tae)(Bpa)2]2+[NO3]22−·nH2O interpenetrated networks show a solvent loss triggering dynamic aperture of the porous structure from a closed to an open form with a difference of 29% of the volume cell.

Creep Analysis for an Unbonded Flexible Pipe Barrier

2006 ◽  
Author(s):  
Lun Qiu ◽  
John Zhang
Keyword(s):  
Finite Element ◽  
Creep Behavior ◽  
Barrier Layer ◽  
Polyvinylidene Fluoride ◽  
Element Model ◽  
Polymer Materials ◽  
Flexible Pipe ◽  
Internal Fluid ◽  
Creep Analysis ◽  
Parameter Matching

The fluid barrier in an unbonded flexible pipe seals the pressure from the internal fluid. Since the barrier is usually made of polymer materials, it is unable to hold the pressure by itself. A metal reinforced hoop layer is usually needed outside the barrier layer in order to resist the pressure. The hoop layer is usually a steel bar with a cross-section of an irregular shape. It is helically wrapped at the outside of the barrier layer. When the pipe is pressurized, the barrier will be supported by the hoop reinforcement layer from outside. However, at the gap between the steel wraps where the barrier layer bridges, material of the barrier will be forced to extrude into the gap. The amount of the extrusion is a function of many parameters such as temperature, material property, and internal pressure and so on. In addition, it is time dependent. The creep effect needs be considered. It is critical to have a proper barrier design for a flexible pipe structure. This article presents a practical finite element method for evaluation of the barrier/gap design. The creep behavior of the polymers is multi-parameter related. Therefore, a series of material tests has been conducted under various stresses and temperatures for nylon, polyethylene and Polyvinylidene Fluoride. In this work a method is given to determine the creep behavior parameters through parameter matching based on the tests. The creep deformation of barrier was analyzed with a finite element model using these parameters.

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