Study on a Thermoresponsive Shape Memory Polymer Used in Down-Hole Packer

2016 ◽  
Vol 847 ◽  
pp. 456-459
Author(s):  
Tao Fu ◽  
Bai Ru Shi ◽  
Zheng Tong ◽  
Ze Jun Shen ◽  
Song Bo Wei ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Recovery ◽  
Environmental Changes ◽  
Shape Memory Polymer ◽  
Degree Of Deformation ◽  
Influence Of Temperature ◽  
Recovery Performance ◽  
Original Configuration

Shape memory polymer (SMP) is being studied and anticipated to be used in a novel down-hole packer. SMP is capable of recovering a predetermined shape following environmental changes, allowing the packer to be altered to a smaller size during run in and to retain its original configuration after activated by the heat in the wellbore. This paper describes the work involved in studying the shape recovery performance of a polyethylene based thermoresponsive SMP under different conditions. The influence of temperature, pressure and degree of deformation on the SMP’s shape recovery performance has been characterized.

Investigate of Electrical Conductivity of Shape-Memory Polymer Filled with Carbon Black

2008 ◽  
Vol 47-50 ◽  
pp. 714-717 ◽  
Author(s):  
Xin Lan ◽  
Jin Song Leng ◽  
Yan Ju Liu ◽  
Shan Yi Du
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Shape Memory ◽  
Shape Recovery ◽  
Volume Fraction ◽  
Shape Memory Polymer ◽  
Recovery Process ◽  
Thermomechanical Properties ◽  
Electrically Conductive ◽  
New System

A new system of thermoset styrene-based shape-memory polymer (SMP) filled with carbon black (CB) is investigated. To realize the electroactive stimuli of SMP, the electrical conductivity of SMP filled with various amounts of CB is characterized. The percolation threshold of electrically conductive SMP filled with CB is about 3% (volume fraction of CB), which is much lower than many other electrically conductive polymers. When applying a voltage of 30V, the shape recovery process of SMP/CB(10 vol%) can be realized in about 100s. In addition, the thermomechanical properties are also characterized by differential scanning calorimetery (DSC).

scholarly journals Electrical actuation and shape recovery control of shape-memory polymer nanocomposites

2013 ◽  
Vol 4 (3) ◽  
pp. 167-178 ◽  
Author(s):  
Fei Liang ◽  
Robert Sivilli ◽  
Jihua Gou ◽  
Yunjun Xu ◽  
Bob Mabbott
Keyword(s):  
Shape Memory ◽  
Polymer Nanocomposites ◽  
Shape Recovery ◽  
Shape Memory Polymer ◽  
Electrical Actuation

Characristics of Shape Memory Composites Combined with Shape Memory Alloy and Shape Memory Polymer

2013 ◽  
Vol 705 ◽  
pp. 169-172
Author(s):  
Xue Feng ◽  
Li Min Zhao ◽  
Xu Jun Mi
Keyword(s):  
Shape Memory ◽  
Room Temperature ◽  
Shape Recovery ◽  
Volume Fraction ◽  
Shape Memory Polymer ◽  
Young Modulus ◽  
Thermomechanical Properties ◽  
The Matrix ◽  
Shape Memory Composites ◽  
Shape Fixity

In order to develop high functionality of shape memory materials, the shape memory composites combined with TiNi wire and shape memory epoxy were prepared, and the mechanical and thermomechanical properties were studied. The results showed the addition of TiNi wire increased the Young modulus and breaking strength both at room temperature and at elevated temperature. The composites maintained the rates of shape fixity and shape recovery close to 100%. The maximum recovery stress increased with increasing TiNi wire volume fraction, and obtained almost 3 times of the matrix by adding 1vol% TiNi wire.

Origami-inspired shape memory dual-matrix composite structures

2019 ◽  
Vol 30 (17) ◽  
pp. 2639-2647
Author(s):  
O-Hyun Kwon ◽  
Jin-Ho Roh
Keyword(s):  
Shape Memory ◽  
Polymer Composite ◽  
Matrix Composite ◽  
Composite Structures ◽  
Shape Recovery ◽  
Shape Memory Polymer ◽  
Tensile Tests ◽  
Woven Fabrics ◽  
Morphing Structure ◽  
Composite Skins

A sandwiched morphing structure is developed using an Origami-inspired shape memory dual-matrix composite core and shape memory polymer composite skins. The geometric parameters of the morphing structure are designed to have a zero Poisson’s ratio. In addition, an analytical model is developed to analyze the three-dimensional morphing structure easily. The shape memory dual-matrix composites are fabricated with woven fabrics based on the shape memory polymers, and an epoxy matrix is used to ensure a flexible and shape-recoverable structure. The shape recoverability of the shape memory polymer composite skins is verified by measuring the shape recovery ratio at various temperatures. Based on the tensile tests for the shape memory polymer composite skins and shape memory polymer hinges, it is found that the morphing structure can be highly flexible depending on temperature. Finally, the bending and shape recovery behaviors of the morphing structure are demonstrated.

Plastic Deformation and Shape Recovery Property of Shape Memory Polymer

2004 ◽  
Vol 2004 (0) ◽  
pp. 449-450
Author(s):  
Genki Horiuchi ◽  
Jianhui Qiu ◽  
Noboru Nakayama ◽  
Tetsuo Kumazawa
Keyword(s):  
Plastic Deformation ◽  
Shape Memory ◽  
Shape Recovery ◽  
Shape Memory Polymer

Light-induced shape recovery of deformed shape memory polymer micropillar arrays with gold nanorods

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30495-30499 ◽  
Author(s):  
Yongwei Zheng ◽  
Jie Li ◽  
Elaine Lee ◽  
Shu Yang
Keyword(s):  
Shape Memory ◽  
Gold Nanorods ◽  
Shape Recovery ◽  
Shape Memory Polymer ◽  
Micropillar Arrays

Micropillars, made of light-responsive shape memory polymer with gold nanorods, were bent above its Tg and cooled to lock the structures. Between bent and straight pillars, we demonstrated tunable transmittance and wetting.

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