Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Tensile elastic modulus elasticity

Hardness Specific gravity Tensile strength. Modulus of elasticity, GN/m Thermal conductivity, W/(m-K) Coefficient of expansion, 10-6"C... [Pg.1]

The generalized stress-strain curve for plastic shown in Fig. 2-7 serves to define several useful qualities that include the tensile strength, modulus (modulus of elasticity) or stiffness (initial straight line slope of... [Pg.46]

Type of Fiber Reinforcement Specific Gravity Density lb./in.3 (g/cm3) Tensile Strength 103 psi (GPa) Specific Strength 106 in. Tensile Elastic Modulus 106 psi (GPa) Elastic Modulus 108 in. [Pg.355]

Fig. 7-2 An example of a range in tensile strength, modulus of elasticity, and elongation of some TPs with and without chopped glass fibers by weight and type of reinforcement. Fig. 7-2 An example of a range in tensile strength, modulus of elasticity, and elongation of some TPs with and without chopped glass fibers by weight and type of reinforcement.
For a long time, the fiber industry had been aware of PTT having desirable properties for fiber applications. In a 1971 patent [3], Fiber Industries, Inc. found PTT fiber to have a lower modulus, better bending and work recoveries than PET, and was therefore more suitable than PET for making fiberfill and carpets. Ward et al. [4] compared the mechanical properties of the three polyester fibers, and found PTT indeed had a better tensile elastic recovery and a lower modulus than both PET and PBT. These two properties are very desirable and are valued... [Pg.361]

Kalyanasundaram, Kumar, and Kuloor (K2) found the influence of dispersed phase viscosity on drop formation to be quite appreciable at high rates of flow. The increase in pd results in an increase in drop volume. To account for this, the earlier model was modified by adding an extra resisting force due to the tensile viscosity of the dispersed phase. The tensile viscosity is taken as thrice the shear viscosity of the dispersed phase, in analogy with the extension of an elastic strip where the tensile elastic modulus is represented by thrice the shear elastic modulus for an incompressible material. The actual force resulting from the above is given by 3nRpd v. [Pg.339]

The term s0E sin (cot) in Eq. (13.54) is the part of the stress that is in phase with the deformation and thus represents the elastic part of the stress, i.e. the part of the stress where energy is stored. For that reason E is called the (tensile) storage modulus. The term e0E"cos(cot) in Eq. (13.54) is the part of the stress that is re/2 rad out of phase with the deformation and thus represents the viscous part of the stress, i.e. the part of the stress where energy is dissipated. For that reason E" is called the (tensile) loss modulus. [Pg.408]

The rigidity or flexibility of the molded product is controlled by the formulation of the plastic used, by the wall thickness, and shape. With increased melt temperature of LDPE decrease occurs in chemical resistance, ductility, impact strength, tensile strength, modulus of elasticity, and weatherability. [Pg.434]

Thermosets Specific gravity Tensile strength Modulus of elasticity, tension Impact strength, Izod Maximum use temperature (no load) HOT at 254 Ibfi in Chemical resistance s ... [Pg.2220]

Tensile stress Tensile strain Modulus of elasticity... [Pg.425]

Figure 3-1 illustrates the trends in tensile strength, as a function of temperature, for the small diameter ceramic fibers that were available in the late 1980s (Pysher et al., 1989). The tensile elastic modulus was also measured as a function of temperature (Figure 3-2a and Figure 3-2b). Data on fiber strength have been updated and generalized by DiCarlo and Dutta (1995) and are included in Figure 3-4. The stiffness properties of ceramic fibers are very similar to those of bulk ceramics with comparable microstructures (e.g., the elastic modulus of bulk glass-bonded mullite is similar to 3MNextel 480 fiber). Figure 3-1 illustrates the trends in tensile strength, as a function of temperature, for the small diameter ceramic fibers that were available in the late 1980s (Pysher et al., 1989). The tensile elastic modulus was also measured as a function of temperature (Figure 3-2a and Figure 3-2b). Data on fiber strength have been updated and generalized by DiCarlo and Dutta (1995) and are included in Figure 3-4. The stiffness properties of ceramic fibers are very similar to those of bulk ceramics with comparable microstructures (e.g., the elastic modulus of bulk glass-bonded mullite is similar to 3MNextel 480 fiber).
FIGURE 8. Tensile Elastic Modulus versus 600°C Oxidation Time for SiOC Nextel 312 BN 2-D Composites... [Pg.357]

The UCSB Nextel 720 reinforced material with its lower stiffness mullite matrix has a 45° tensile elastic modulus of only 23 MPa, or less than 40% of its fiber direction stiffness [142]. [Pg.403]

TYPE OF FIBER REINFORCEMENT SPECIFIC GRAVITY DENSITY LB/IN TENSILE STRENGTH 10 PSI SPECIFIC STRENGTH 10 IN. TENSILE ELASTIC MODULUS 10 PSI SPECIFIC ELASTIC MODULUS 10 IN. [Pg.254]

Where Young s modulus is needed in the above stress anafysis, the tensile creep modulus is inserted, using the value for the appropriate temperature and duration of loading, and for the maximum tensile strain in the component (as determined by the linear elastic anafysis). [Pg.393]

As shown by Eq. (15) and (17), the tensile elastic behaviom of fibers made from lyotropic polymers is determined by the chain modulus e the shear modulus go and the orientation parameter . As has been discussed in Sect. 2 and 3, the latter is determined by the persistence length, the molecular weight, the polymer concentration and the temperature of the liquid crystalline solution, and furthermore by the spinning and coagulation conditions. [Pg.158]

Transverse tensile strength Tensile elastic modulus, E Shear modulus, G (calculated) Density... [Pg.263]

The mechanical degradation that arises after irradiation with y-rays has been shown to be independent of the conditions of irradiation (air or vacuum) [93]. The post-irradiation effects of oxygen dominate, which will lead to a drop in both the tensile strength, modulus of elasticity, and elongation over time. Table 52.6 gives some changes for isotactic... [Pg.874]

TABLE 52.6. Variation in the tensile strength, modulus of elasticity, elongation, and some electrical properties with irradiation dose in polypropylenes. [Pg.875]

The silica particles formed had an average diameter of 40 nm. Improvements in tensile strength, modulus at 300% strain and flammability as well as higher elasticity near the glass transition temperature were observed. The elongation... [Pg.239]

Supri and Ismail [46] prepared modified and unmodified low-density polyethylene (LDPE) and mixed it with water hyacinth fiber (WHF) composites by melt blending. Tensile test, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and water absorption behavior test of the composites were conducted. The NCO-polyol-modified LDPE/AAfHF showed higher tensile strength, modulus of elasticity, and water absorption resistance as compared to the unmodified LDPE/WHF composites. However, the elongation at break was better when the LDPE was immodi-fied. Moreover, the modified LDPE/WHF offered better thermal properties in comparison to the unmodified LDPE/WHF. The NCO-polyol was reported to create better dispersion of WHF in the LDPE matrix. [Pg.51]


See other pages where Tensile elastic modulus elasticity is mentioned: [Pg.905]    [Pg.170]    [Pg.1061]    [Pg.228]    [Pg.906]    [Pg.138]    [Pg.187]    [Pg.190]    [Pg.201]    [Pg.431]    [Pg.320]    [Pg.297]    [Pg.25]    [Pg.532]    [Pg.79]    [Pg.666]    [Pg.68]    [Pg.123]    [Pg.83]    [Pg.353]    [Pg.479]    [Pg.79]    [Pg.666]    [Pg.233]   


SEARCH



Elasticity modulus

Tensile modulus

© 2024 chempedia.info