Glass Charpy impact strength

This section will examine some of the characteristic features of IPN s from a physical and mechanical point of view. Emphasis will be on relating the glass transition behavior to corresponding aspects of morphology. The principal instrumentation employed in the studies discussed here includes a torsional tester for creep-type studies (Section 8.3.1) and a fixed-frequency vibrating unit for dynamic mechanical spectroscopy (see Section 8.3.2). In addition, stress-strain, tensile, and Charpy impact strength values will be briefly discussed. 

Figure 10.78 Charpy Impact strength vs. temperature for BASF Ultrason E 2010 G4— medium viscosity, 20% glass fIber-reInforced PES resins.

Figure 7.5 Charpy impact strength as a function of glass fiber content for several engineering thermoplastics. PP data are included for comparison.

Figures 7.4 and 7.5 show the effects of increasing glass concentration on the tensile moduli and Charpy impact strength values of several injection-molded engineering thermoplastics data on polypropylene, a much lower modulus commodity resin commonly reinforced with glass fibers, are also included for comparison purposes.

Dependence of two estimates on the impact strength on the amount of PDMS in PDMS-modified SiOj glasses. " The impact strengths were obtained from (a) the Charpy pendulum impact test and (b) the falling-weight impact test. 

Composition Glass in composite, wt% Tensile strength, MPa Tensile modulus, GPa Notched Charpy impact strength, J mm ... 

Composition Wt% Glass in Composite Tensile Strength (MPa) Tensile Modulus (GPa) Notched Charpy Impact Strength (J/mm ... 

Charpy impact strength, unnotched, 23°C kJ m 160-270 28 (15% glass fiber) ... 

Charpy impact strength, unnotched, 23°C kJ m-2 no break to 50-250 (dry) no break (conditioned) 40-95 (12-50% glass fiber, dry) 100-105 (12-50% glass fiber, conditioned) ... 

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