Study on Cyclic Compressive and Dynamic Mechanical Properties of Porous Polyurethane Composites Prepared with Hollow Silica Microspheres

Porous polycaprolactone-based polyurethane composites containing hollow silica microspheres were synthesized by one-step bulk polymerization. The effects of incorporated hollow silica microspheres on the cyclic compressive and dynamic mechanical properties of the composites were examined. Cyclic compression testing was carried out to record the accumulated stress versus strain profiles during 100 continuous loading and unloading cycles and to study the compressive behavior and time-dependent recovery of the composites. The effects of frequency on the dynamic mechanical properties of the composites was also investigated using a dynamic mechanical analyzer. Cole–Cole and Wicket plots were drawn to check the validity of the time-temperature supposition of the composites in the temperature and frequency ranges considered. Master curves of the composites were constructed based on the time-temperature superposition principle to obtain the long-term dynamic mechanical behavior of the composites.

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Effect of Hollow Silica Microspheres on Compressive and Dynamic Mechanical Properties of Hydroxyl-Terminated Polybutadiene-Based Polyurethane Composites

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2021.19183 ◽

2021 ◽

Vol 21 (7) ◽

pp. 3813-3818

Author(s):

Bo Min Kwak ◽

Younghwan Kwon

Keyword(s):

Mechanical Properties ◽

Superposition Principle ◽

Dynamic Mechanical Properties ◽

Mechanical Analysis ◽

Bulk Polymerization ◽

Silica Microspheres ◽

Hollow Silica ◽

Dynamic Mechanical ◽

Time Temperature Superposition Principle ◽

Polyurethane Composites

Porous polyurethane composites containing hollow silica microspheres were prepared by one-step bulk polymerization to study cyclic compressive and dynamic mechanical properties of the composites. Cyclic compression testing was conducted to record the stress versus strain curves during the loading and unloading cycles and in order to study the compressive behavior and time-dependent recovery of the composites. Effect of frequency on the dynamic mechanical properties of the composites was also evaluated using dynamic mechanical analysis. Master curves were constructed based on time-temperature superposition principle in order to show long-term dynamic mechanical behavior of the composites.

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Novel soy oil based polyurethane composites: Fabrication and dynamic mechanical properties evaluation

Journal of Materials Science ◽

10.1023/b:jmsc.0000016211.93689.89 ◽

2004 ◽

Vol 39 (5) ◽

pp. 1887-1890 ◽

Cited By ~ 16

Author(s):

J.-P. Latere Dwan'isa ◽

A. K. Mohanty ◽

M. Misra ◽

L. T. Drzal ◽

M. Kazemizadeh

Keyword(s):

Mechanical Properties ◽

Dynamic Mechanical Properties ◽

Soy Oil ◽

Dynamic Mechanical ◽

Polyurethane Composites

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Pultruded fibre-reinforced polyurethane composites. III. Static mechanical, thermal, and dynamic mechanical properties

Composites Science and Technology ◽

10.1016/0266-3538(94)90177-5 ◽

1994 ◽

Vol 52 (3) ◽

pp. 427-432 ◽

Cited By ~ 25

Author(s):

Chin-Hsing Chen ◽

Chen-Chi M. Ma

Keyword(s):

Mechanical Properties ◽

Dynamic Mechanical Properties ◽

Dynamic Mechanical ◽

Static Mechanical ◽

Polyurethane Composites

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Preparation and Properties of New in-situ Acrylic Copolymer/Terpolymer- Clay Hybrid Nanocomposites

Rubber Chemistry and Technology ◽

10.5254/1.3547963 ◽

2006 ◽

Vol 79 (4) ◽

pp. 820-834 ◽

Cited By ~ 1

Author(s):

S. Patel ◽

A. Bandyopadhyay ◽

V. Vijaybaskar ◽

Anil K. Bhowmick

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Dynamic Mechanical Properties ◽

Bulk Polymerization ◽

Hybrid Nanocomposites ◽

Acrylic Copolymer ◽

Force Microscopy ◽

Dynamic Mechanical ◽

Modified Clay

Abstract Acrylic copolymer- and 5% acrylic acid (AA) modified terpolymer-hybrids with unmodified montomorilonite clay (Cloisite Na) and organo-modified clay (Cloisite 10A) were synthesized by in-situ free radical bulk polymerization. Hybrid nanocomposites were investigated by Atomic Force Microscopy (AFM), X-ray diffraction (XRD) technique, thermogravimetric analysis (TGA), dynamic mechanical and mechanical properties. XRD results suggested polymer intercalation in both unmodified and organo-modified clay in the copolymer and terpolymer hybrids. AFM analysis further confirmed these results. Cloisite 10A hybrids and the terpolymeric nanocomposites demonstrated superior mechanical and dynamic mechanical properties. Terpolymer-clay hybrids with 9 wt% Cloisite 10A also showed higher thermal stability. The possible reasons for improvement of mechanical properties and thermal stability were discussed with reference to the structure and interaction.

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