Time-temperature-dependent behavior of a substituted poly(paraphenylene): Tensile, creep, and dynamic mechanical properties in the glassy state

Different contents of epoxy functionalized polyhedral oligomeric silsesquioxane (POSS-Ep) were used to modify cyanate ester resin. The dynamic mechanical properties of the hybrids were studied dynamic mechanical analysis (DMA). DMA results showed that POSS-Ep tended to decrease E’ of the hybrids at the glassy state but to increase E’ of the hybrids at the rubbery state.

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Research on Dynamic Mechanical Properties of Poly(m-Phenyleneisophthalamide) Paper

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.236-238.1208 ◽

2011 ◽

Vol 236-238 ◽

pp. 1208-1211

Author(s):

Mei Yun Zhang ◽

Tao Li ◽

Jin Bei Lu

Keyword(s):

Mechanical Properties ◽

Molecular Motion ◽

Glassy State ◽

Dynamic Mechanical Properties ◽

Temperature Curve ◽

Dynamic Mechanical ◽

Fluid State ◽

External Forces ◽

Freedom Movement ◽

Applied Paper

The dynamic mechanical properties of PMIA-Pulp applied paper were investigated. At the same time, the dynamic mechanical properties of DuPont T410 paper were compared. Measurements of the dynamic mechanical properties were carried out on samples of low crystallinity and low orientation over a temperature range from 20°C to +500°C, at a frequency of 110 Hz, at a heating rate of 3°C/min. As the temperature from low to high, three different mechanical states with glassy state, rubber state and fluid state were appeared on DMA temperature curve, it responded the different mode of molecular motion. Storage modulus and glass transition peak of DuPont T410 paper were higher than the self-made applied paper. It means DuPont T410 Paper had a high resistance to external forces and deformation, as well as a good rigidity. Molecular chain freedom movement was difficult and the energy required to move relatively larger.

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Analytical Modelling and Optimization of the Temperature-Dependent Dynamic Mechanical Properties of Fused Deposition Fabricated Parts Made of PC-ABS

Materials ◽

10.3390/ma9110895 ◽

2016 ◽

Vol 9 (11) ◽

pp. 895 ◽

Cited By ~ 21

Author(s):

Omar Mohamed ◽

Syed Masood ◽

Jahar Bhowmik

Keyword(s):

Mechanical Properties ◽

Dynamic Mechanical Properties ◽

Analytical Modelling ◽

Temperature Dependent ◽

Dynamic Mechanical ◽

Fused Deposition ◽

Modelling And Optimization

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Dynamic Mechanical Properties of Ceramics and Ceramic Composites at Elevated Temperatures

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.2815541 ◽

1997 ◽

Vol 119 (1) ◽

pp. 15-19 ◽

Cited By ~ 6

Author(s):

S. Yang ◽

R. F. Gibson ◽

G. M. Crosbie ◽

R. L. Allor

Keyword(s):

Mechanical Properties ◽

Elastic Modulus ◽

Room Temperature ◽

Elevated Temperatures ◽

Ceramic Composites ◽

Dynamic Mechanical Properties ◽

Internal Damping ◽

Temperature Dependent ◽

Dynamic Mechanical ◽

Dynamic Mechanical Behavior

This paper presents the preliminary results of our research on dynamic mechanical properties of silicon nitride based ceramics and ceramic composites at elevated temperatures. The temperature-dependent dynamic elastic modulus and internal damping of the cantilever beam samples were measured from room temperature up to 1100°C. The dynamic mechanical behavior is found to be rather stable up to 700°C, but damping peaks are found to occur at around 900°C, accompanied by a corresponding relaxation in elastic modulus for the tested samples. By simulating the thermal cycling environment of engines, the resulting changes in the dynamic mechanical properties of the samples are observed. The possible mechanisms affecting the dynamic mechanical properties of these ceramics and ceramic composites, with special emphasis on high-temperature behavior, are discussed.

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