Tensile properties Young’s modulus

Tensile properties, Young s modulus, Izod impact strength, and Rockwell hardness of the compression-molded specimens were determined by the standard... 

The tensile properties (tensile strength, Young s modulus, and elongation) of unoriented, noncrystalline films were investigated for those polymers that formed clear films by solvent casting. The results collected in Table I allowed several general conclusions. 

As a result of the same intra-chain rr-bonding and the relatively strong inter-chain electron transfer interaction, the mechanical properties (Young s modulus and tensile strength) of conjugated polymer are potentially superior to those of saturated polymers. Thus, metallic polymers offer the promise of truly high performance high conductivity plus superior mechanical properties. 

Preliminary measurements of mechanical properties of polypropylene (PP) - polycarbonate (PC) blends revealed that the blends containing about 10 wt.% PP maintain several properties at the level of pure PC. Some of the properties (e.g. tensile yield, Young s modulus or impact strength) of these blends are even higher than those of pure PC We have recently measured the electrical... 

Material property Young s modulus, GPa Tensile strength, MPa Compressive strength, MPa Elongation, %... 

Table 14.1 Mechanical properties of NR films reinforced with cellulose nanocrystals and microfibrils (MF) cellulose extracted from the date palm tree obtained from the tensile tests Young s modulus ( ), strain at break ( R) and strength.

It is general experience in materials science that alloy can exhibit qualities that are unobtainable with parent metals. This is particularly true for electrodeposited alloys, mainly due to formation of metastable phases and intermediate layers. Some important properties of materials, such as hardness, ductility, tensile strength. Young s modulus, corrosion resistance, solderability, wear resistance, antifriction service, etc., may be enhanced. At the same time, some properties that are not characteristic for parent metals, such as high magnetic permeability, other magnetic and electrical properties, amorphous structure, etc., can also be obtained. In some cases, alloy coatings may be more suitable for subsequent electroplate overlayers and conversion chemical treatments [1],... 

The mechanical properties (Young s modulus, E, yield stress, Gy, tensile stress, cr , tensile strain, s ) of the films were determined using a tensile testing machine from Rheometric Scientific (Minimat-Firmware 3.1). For each composition, three films were obtained and ten samples of 5 x 2 cm were cut from each film and stretched uniaxially at a speed of 5 mm min at room temperature. Half of the samples were cut in the shear direction (0°) and the rest perpendicularly to it (90°). Therefore, 30 samples (15 in each direction) of each composition were tested in order to take into account the inherent variability of these systems. All the parameters were calculated for a 95% confidence interval for the mean. 

Glass fiber properties, such as tensile strength. Young s modulus and chemical diu-ability, are measured on the fibers directly. Other properties, such as dielectric constant, dissipation factor, dielectric strength, volume/smface resistivities, and thermal expansion, are measured on glass that has been formed into a bulk sample and annealed (heat treated) to relieve forming stresses. Properties such as density and refractive index are measmed on both fibers and bulk samples, in annealed or unannealed form. The properties presented in Tables 2 and 3 are representative of the compositional ranges in Table 1. 

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