Effect of an enclosed cage structure on the polymer chain characteristics of Ope-POSS/PU hybrid composites

2016 ◽  
pp. 333-335
Author(s):  
R Pan ◽  
L Wang ◽  
Y Liu
Keyword(s):  
Polymer Chain ◽  
Hybrid Composites ◽  
Cage Structure

The Effect of Humping Semi-Enclosed Cage Structure on Polymer Chains Characteristics of TSI-POSS/PU Hybrid Composites

2015 ◽  
Vol 751 ◽  
pp. 30-34 ◽  
Author(s):  
Rui Pan ◽  
Robert Shanks ◽  
Yong Liu
Keyword(s):  
Hybrid Composites ◽  
Mean Square Displacement ◽  
Phenyl Isocyanate ◽  
Polymer Chains ◽  
Dynamics Simulation ◽  
Cage Structure ◽  
X Ray ◽  
X Ray Scattering ◽  
The Mean ◽  
Oligomeric Silsesquioxane

Trisilanolisobutyl polyhedral oligomeric silsesquioxane (TSI-POSS) with the humping semi-enclosed cage structure, was incorporated in concentrations of 7, 13 and 22 wt% into 4,4’-methylenebis (phenyl isocyanate) (MDI) and glycerol propoxylate to prepare TSI-POSS/PU hybrid composites, respectively. The polymer chain characteristics of these composites were investigated by wide angle X-ray scattering (WAXS) and molecular dynamics simulation approach. The results indicate that with TSI-POSS concentration increasing up to 22 wt% in hybrid composites, due to the humping semi-enclosed cage structure, distinct crystallite clusters are formed which lead to the micro-phase separation in composites. Meanwhile, the mobility of TSI-POSS cores and backbones in PU composites has been evaluated by the mean square displacement, which confirms that as the concentration of TSI-POSS increasing, the mobility of polymer chains are restricted apparently. Furthermore, it also indicates that the incorporation of TSI-POSS is as the rigid core in hybrid composites.

Conformation of Polymer Chain in the Bulk

1976 ◽  
Vol 1 ◽  
pp. 112-121
Author(s):  
J. P. Cotton ◽  
D. Decker ◽  
H. Benoit ◽  
B. Farnoux ◽  
J. Higgins ◽  
...  
Keyword(s):  
Polymer Chain

Undulations of a Straight Polymer Chain Embedded in a Membrane

1996 ◽  
Vol 6 (12) ◽  
pp. 1743-1757
Author(s):  
M. Singh-Zocchi ◽  
M. M. Kozlov ◽  
W. Helfrich
Keyword(s):  
Polymer Chain

Morphology and properties of PA6 hybrid composites filled with short carbon fibers and organoclay

2016 ◽  
Vol 2 (3) ◽  
pp. 47-57 ◽  
Author(s):  
S.S. Pesetskii ◽  
S.P. Bogdanovich ◽  
V.V. Dubrovskii ◽  
T.M. Sodyleva ◽  
V.N. Aderikha ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composites ◽  
Short Carbon

Influence of Multiwall Carbon Nanotube on mechanical and wear properties of Copper – Iron composite

2020 ◽  
Vol 17 (1) ◽  
pp. 7570-7576 ◽  
Author(s):  
H. Sh. Hammood ◽  
S. S. Irhayyim ◽  
A. Y. Awad ◽  
H. A. Abdulhadi
Keyword(s):  
Carbon Nanotubes ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Hydraulic Press ◽  
Dry Sliding Wear ◽  
Multiwall Carbon Nanotube ◽  
Wear Properties ◽  
Sem Images ◽  
Wear Rates ◽  
Multiwall Carbon

Multiwall Carbon nanotubes (MWCNTs) are frequently attractive due to their novel physical and chemical characteristics, as well as their larger aspect ratio and higher conductivity. Therefore, MWCNTs can allow tremendous possibilities for the improvement of the necessarily unique composite materials system. The present work deals with the fabrication of Cu-Fe/CNTs hybrid composites manufactured by powder metallurgy techniques. Copper powder with 10 vol. % of iron powder and different volume fractions of Multi-Wall Carbon Nanotubes (MWCNTs) were mixed to get hybrid composites. The hybrid composites were fabricated by adding 0.3, 0.6, 0.9, and 1.2 vol.% of MWCNTs to Cu- 10% Fe mixture using a mechanical mixer. The samples were compressed under a load of 700 MPa using a hydraulic press to compact the samples. Sintering was done at 900°C for 2 h at 5ºC/min heating rate. The microscopic structure was studied using a Scanning Electron Microscope (SEM). The effect of CNTs on the mechanical and wear properties, such as micro-hardness, dry sliding wear, density, and porosity were studied in detail. The wear tests were carried out at a fixed time of 20 minutes while the applied loads were varied (5, 10, 15, and 20 N). SEM images revealed that CNTs were uniformly distributed with relative agglomeration within the Cu/Fe matrix. The results showed that the hardness, density, and wear rates decreased while the percentage of porosity increased with increasing the CNT volume fraction. Furthermore, the wear rate for all the CNTs contents increased with the applied load.

Mode II delamination of woven mengkuang fiber/woven silk laminated hybrid composites

2016 ◽  
Vol 58 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Mohd Azwan Husin ◽  
Rozli Zulkifli ◽  
Shahrum Abdullah ◽  
Wan Ramli Wan Daud
Keyword(s):  
Hybrid Composites ◽  
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