Mechanical Properties of Syndiotactic Propylene−Ethylene Copolymers

2006 ◽  
Vol 39 (1) ◽  
pp. 249-256 ◽  
Author(s):  
Claudio De Rosa ◽  
Finizia Auriemma
Keyword(s):  
Mechanical Properties ◽  
Ethylene Copolymers

Mechanical properties of isotactic 1-butene-ethylene copolymers from Ziegler-Natta catalyst

Polymer ◽  
2021 ◽  
Vol 216 ◽  
pp. 123408
Author(s):  
Odda Ruiz de Ballesteros ◽  
Finizia Auriemma ◽  
Rocco Di Girolamo ◽  
Anna Malafronte ◽  
Miriam Scoti ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ethylene Copolymers ◽  
Natta Catalyst ◽  
Ziegler Natta Catalyst

Microhardness of ethylene copolymers and correlation with their mechanical properties

1991 ◽  
Vol 10 (13) ◽  
pp. 739-741 ◽  
Author(s):  
C. Fonseca ◽  
J. M. Pere�a ◽  
J. G. Fatou
Keyword(s):  
Mechanical Properties ◽  
Ethylene Copolymers

Polymorphic Behavior and Mechanical Properties of Isotactic 1-Butene–Ethylene Copolymers from Metallocene Catalysts

2014 ◽  
Vol 47 (13) ◽  
pp. 4317-4329 ◽  
Author(s):  
Claudio De Rosa ◽  
Odda Ruiz de Ballesteros ◽  
Finizia Auriemma ◽  
Rocco Di Girolamo ◽  
Carmela Scarica ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metallocene Catalysts ◽  
Polymorphic Behavior ◽  
Ethylene Copolymers

Modification of the Structural and Mechanical Properties of Highly Filled Polyolefin Composites

2017 ◽  
Vol 44 (2) ◽  
pp. 29-32
Author(s):  
E.A. Dudochkina ◽  
D.I. Lyamkin ◽  
A.N. Zhemerikin ◽  
P.A. Cherkashin
Keyword(s):  
Mechanical Properties ◽  
Ethylene Copolymers ◽  
Elongation At Break ◽  
Ethylene Content ◽  
Deformation Properties

The effect of additions of ethylene copolymers on the mechanical properties of filled polyolefin composites based on polyethylene 10803-020 and whiting was investigated. It was established that the best deformation properties are ensured by introducing copolymers of ethylene with propylene with an ethylene content of 50–70%. It was shown that the increase in elongation at break when the copolymers are introduced is connected with amorphisation of the polymer base.

Mechanical properties of vinyl alcohol-ethylene copolymers

2000 ◽  
Vol 40 (4) ◽  
pp. 1036-1045 ◽  
Author(s):  
M. L. Cerrada ◽  
J. M. Pereña ◽  
R. Benavente ◽  
E. Pérez
Keyword(s):  
Mechanical Properties ◽  
Vinyl Alcohol ◽  
Ethylene Copolymers

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

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