Dynamic mechanical properties of plastics

Determining and Reporting Dynamic Mechanical Properties of Plastics... [Pg.197]

Torsion property As noted, the shear modulus is usually obtained by using pendulum and oscillatory rheometer techniques. The torsional pendulum (ASTM D 2236 Dynamic Mechanical Properties of Plastics by Means of a Torsional Pendulum Test Procedure) is a popular test, since it is applicable to virtually all plastics and uses a simple specimen readily fabricated by all commercial processes or easily cut from fabricated products. [Pg.62]

ASTM D 4065-95, Standard Practice for Determining and Reporting Dynamic Mechanical Properties of Plastics, ASTM, West Conshohocken, PA, 1997. [Pg.206]

D 4065 (1995) Determining and reporting dynamic mechanical properties of plastics... [Pg.202]

Figure 3.9 Dynamic mechanical properties of plastics vs. temperature...

D 5023 Test Method for Measuring the Dynamic Mechanical Properties of Plastics Using Three Point Bending... [Pg.337]

Solid-state polymerization of crystalline monomer without any intermediate loss of order. The topotactic oligomers have been produced, but the order is lost as the polymerization progresses beyond a low degree of polymerization. Test equipment used for determining the dynamic mechanical properties of plastics. [Pg.2273]

Dynamic mechanical analyzer n. An instrument that can test in an oscillating-flexural mode over a range of temperature and frequency to provide estimates of the real , i.e., in-phase, and imaginary , i.e., out-of-phase parts of the complex modulus. The real part is the elastic component, the imaginary part is the loss component. The square root of the sum of their squares is the complex modulus. With polymers, the components and the modulus are usually dependent on both temperature and frequency. ASTM D 4065 spells out the standard practice for reporting dynamic mechanical properties of plastics. An example of a DMA thermogram of different Perkin-Elmer Inc., manufactures the Diamond DMA instrument. Polymer films is shown. Sepe MP (1998) Dynamic mechanical analysis. Plastics Design Library, Norwich, New York. [Pg.337]

D5026-01 Measuring the dynamic mechanical properties of plastics in tension 6721-5... [Pg.41]

D5026-01 (ISO 6721-5), Standard Test Method for Measuring Dynamic Mechanical Properties of Plastics in Tension ... [Pg.46]

D 3917 DIMENSIONAL TOLERANCE OF PULTRUDED SHAPES D 3998 PENDULUM IMPACT OF EXTRUDATES D 4065 DYNAMIC MECHANICAL PROPERTIES OF PLASTICS D 4093 PHOTOELECTRIC BIREFRINGENCE D 4100 GRAVIMETRIC ANALYSIS OF SMOKE/PLASTICS D 4218 DETERMINATION OF CARBON BLACK CONTENT D 4272 IMPACT BY DART DROP... [Pg.620]

Many different experimental techniques exist today to study the effects of elevated temperature on dynamic mechanical properties of plastics. Perhaps, the most meaningful and simplest technique is the torsion pendulum technique. Using this technique, one can derive a plot of short-time modulus versus temperature up to the beginning of melting and degradation. [Pg.98]

Even though torsion pendulum tests run at elevated temperatures provide very useful information regarding the dynamic mechanical properties of plastics, one must not forget that it is, nevertheless, a short-term test. The data obtained from creep modulus and creep rupture tests conducted at elevated temperatures must be relied on for long-term effects. [Pg.100]

Test method for dynamic mechanical properties of plastics by means of a torsional pendulum Practice for determining resistance of synthetic polymer material to fungi. Practice for determining resistance of plastics to bacteria... [Pg.637]