Mechanical Properties of Polymers and Composites

Book•

Mechanical Properties of Polymers and Composites

14 Dec 1993-

TL;DR: In this article, the authors discuss various mechanical properties of fiber-filled composites, such as elastic moduli, creep and stress relaxation, and other mechanical properties such as stress-strain behavior and strength.

read less

Abstract: Mechanical Tests and Polymer Transitions * Elastic Moduli * Creep and Stress Relaxation * Dynamical Mechanical Properties * Stress-Strain Behaviour and Strength * Other mechanical Properties * Particulate-Filled Polymers * Fiber- Filled Composites and Other Composites.

...read moreread less

Citations

PDF

Open Access

More filters

Journal Article•DOI•

Measurement of the Young's modulus in particulate epoxy composites using the impulse excitation technique

[...]

S. Tognana¹, Walter Salgueiro¹, Alberto Somoza¹, Angel J. Marzocca²•Institutions (2)

National University of Central Buenos Aires¹, Facultad de Ciencias Exactas y Naturales²

15 Jul 2010-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing

TL;DR: In this paper, a study of the Young's modulus as a function of the volumetric filler content in an epoxy matrix was carried out, where composites were prepared adding to the resin matrix particles of aluminum, copper and quartz with typical sizes of about 100μm.

...read moreread less

Abstract: A study of the Young's modulus as a function of the volumetric filler content in an epoxy matrix was carried out. To this aim, composites were prepared adding to the resin matrix particles of aluminum, copper and quartz with typical sizes of about 100 μm. To measure values of the Young's modulus, an experimental set-up based on the impulse excitation technique was developed. The results obtained are discussed in terms of two well-known micromechanical models: one based on the Hashin–Shtrikman relationships and in the other one the Kerner equation was used. The analysis of the information obtained for the three different types of filler used allow concluding that the Kerner equation describes correctly the Young's modulus behaviour as a function of filler content. From the fitting procedure of the experimental data, additional information regarding the Young's modulus was obtained.

...read moreread less

48 citations

Cites background or methods from "Mechanical Properties of Polymers a..."

...637 [1] was used....
[...]
...Values of the A parameter higher than that calculated for lmost an “ideal” composite could be attributed to the formation f agglomerates of particles besides their geometry [1,9]....
[...]
...From the theoretical point of view, many of the models of particulate composites in polymer matrix were developed from the earlier works of Einstein [1,8] based on the study of viscosity of a fluid containing a small amount of rigid spherical particles....
[...]
...Dynamicalmechanical thermal analysis is apowerful technique, where a sample is forced to vibrate at a fixed frequency [1]....
[...]
...On the other hand, for the computation of the respective bounds of the Young’s modulus of the composites, Ec(+) and Ec(−), a wellknown equation was used [1]:...
[...]

Journal Article•DOI•

Toughness enhancement of polyimides by in situ generation of silica particles

[...]

Pellegrino Musto¹, Giuseppe Ragosta¹, Gennaro Scarinzi¹, Leno Mascia²•Institutions (2)

Olivetti¹, Loughborough University²

01 May 2004-Polymer

TL;DR: In this article, the fracture toughness characteristics were studied by the essential work of fracture method using double edge-notched specimens of different ligament lengths, and it was found that both we and βwp increased with temperature to a larger extent than the parent polyimide.

...read moreread less

48 citations

Journal Article•DOI•

Unmanned aerial vehicle (UAV) manufacturing materials: Synthesis, spectroscopic characterization and dynamic mechanical analysis (DMA)

[...]

Mohamed M. ElFaham¹, Ayman M. Mostafa, G. M. Nasr²•Institutions (2)

Banha University¹, Cairo University²

05 Feb 2020-Journal of Molecular Structure

TL;DR: In this paper, the best prepared composites material to the UAVs real sample was traced by using Fourier transform infrared (FT-IR), energy dispersive X-ray (EDX), and laser induced breakdown spectroscopy (LIBS).

...read moreread less

48 citations

Journal Article•DOI•

Influence of talc morphology on the mechanical properties of talc filled polypropylene

[...]

Luciana Andrea Castillo¹, Silvia Elena Barbosa¹, Numa J. Capiati¹•Institutions (1)

National Scientific and Technical Research Council¹

30 Apr 2013-Journal of Polymer Research

TL;DR: In this article, the influence of different talc morphologies on the final mechanical properties of polypropylene (PP)/talc composites was evaluated, and the results reveal that the main influences of talc morphology are given on modulus, yield strength and elongation at break of PP/talc composite composites.

...read moreread less

Abstract: Injected polypropylene (PP)/talc composites were studied to evaluate the influence of different talc morphologies on their final mechanical properties. Talc genesis is responsible for type and content of associated minerals, crystalline degree, particle size distribution, and specially, morphology. Consequently, when talc is incorporated into PP, differences in the genesis mean differences in particle morphology and may influence the composite properties. Two talc samples having predominant macro and microcrystalline morphologies were used to prepare two composite sets to be tested. Thermal and mechanical properties of each PP/talc composites set were measured, analyzed and discussed comparatively. The results reveal that the main influences of talc morphology are given on modulus, yield strength and elongation at break of PP/talc composites. Macrocrystalline morphology of talc induces better composite mechanical properties than microcrystalline one. This behavior could be explained by talc characteristics as lamellarity, crystalline character and crystallinity degree.

...read moreread less

48 citations

Cites background from "Mechanical Properties of Polymers a..."

...Mechanical properties of particulate composites depend on matrix and filler intrinsic properties, concentration and interfacial adhesion as well as filler dispersion and distribution [9]....
[...]
...The lower σy of PP/A10 composites respect to PP ones is probably due to the presence of small particles rounded by thin crystalline layer that favors A10 particles dewetting [9, 29, 30], decreasing σy and εb, as discussed later....
[...]
...Also, talc particle orientation, which depends on the processing method, plays an important role in the material stiffness [9]....
[...]

Journal Article•DOI•

Isomeric Biphenyl Polyimides. (I) Chemical Structure-property Relationships:

[...]

Chunhai Chen, Rikio Yokota, Masatoshi Hasegawa¹, Masakatsu Kochi², Kazuyuki Horie³, Paul M. Hergenrother⁴ - Show less +2 more•Institutions (4)

Toho University¹, Shizuoka Institute of Science and Technology², Tokyo University of Agriculture and Technology³, Langley Research Center⁴

01 Sep 2005-High Performance Polymers

TL;DR: In this article, a series of polyimides (PIs) were prepared from three biphenyltetracarboxylic dianhydrides (BPDA) isomers through the conventional two-step process.

...read moreread less

Abstract: A series of polyimides (PIs) were prepared from three biphenyltetracarboxylic dianhydrides (BPDA) isomers, i.e., 3,3′,4,4′-BPDA (s-BPDA), 2,3,3′,4′-BPDA (a-BPDA), and 2,2′',3,3′'-BPDA (iBPDA) with various diamines through the conventional two step process. Polymerization reactivity, solubility, and dynamic mechanical properties (T g, softening behavior, and storage modulus at glassy state) were compared between PIs derived from these BPDA isomers and para/meta diamine isomers. The solubility in NMP increased as follows: i-BPDA-PI > a-BPDA-PI > s-BPDA-PI. The order is attributed to semi-crystalline and fully amorphous morphologies of s-BPDA-PI and other isomeric BPDA-PIs, respectively. The use of meta-diamines lowered the T g whereas the use of bent/distorted BPDA isomers enhanced the T g (s-BPDA-PI < a-BPDA-PI < i-BPDA-PI). The BPDA isomer effect on T g is based on the difficulty of obtaining internal rotation around the biphenyl linkages. The width of the DMA rubbery plateau region decreased in the order...

...read moreread less

48 citations

Cites background from "Mechanical Properties of Polymers a..."

...DMTA also provides valuable information other than Tg thermoplasticity, the morphology such as crystallinity and other ordered structures and the extent of entanglement, crosslinking (from the rubbery plateau), and local motion ( and relaxations) [28]....
[...]
...Such a feature in the DMA curves is frequently observed in crystalline or highly crosslinked polymers[28]....
[...]

Collapse

Mechanical Properties of Polymers and Composites

Citations

Cites background or methods from "Mechanical Properties of Polymers a..."

Cites background from "Mechanical Properties of Polymers a..."

Cites background from "Mechanical Properties of Polymers a..."

Related Papers (5)