Synthesis and cryogenic mechanical properties of CO 2 -blown carbon-reinforced polyurethane foam

Abstract

In the present study, carbon-nanotube-polyurethane foams were synthesized by adding (0.02, 0.1, and 0.3 wt%) carbon nanotubes during the polymerization reaction between polyol and isocyanate liquids. After the synthesis process, the microstructural cell morphology of the carbon-nanotube-polyurethane foams, based on the amount of carbon nanotubes, was observed using field emission scanning electron microscopy. To evaluate the mechanical characteristics of the carbon-nanotube-polyurethane foams, temperature-dependent (20°C, −90°C, and −163°C) compressive tests were performed, and the results were compared to those of the pure polyurethane foam to verify the effectiveness of the developed carbon-nanotube-polyurethane foams. Specifically, the effects of the weight percent of carbon nanotubes, density, and temperature on the overall behavior of the carbon-nanotube-polyurethane foams were considered. Finally, the permanent deformation ratio and material failure characteristics were investigated. The results showed that the cell morphology and compressive strength of the carbon-nanotube-polyurethane foam with 0.02 wt% carbon nanotubes were superior to those of pure polyurethane foam, and these properties showed a significant dependence on the weight percent of carbon nanotubes, test temperatures, and the density.

Keywords

Polyurethane foam carbon reinforcement cryogenic mechanical properties compression behavior

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References

Yonezu

Hirayama

Kishida

et al . Characterization of the compressive deformation behavior with strain rate effect of low-density polymeric foams. Polym Test 2016; 50: 1–8.

Lim

Kim

EY and

Kim

BK.

Polyurethane foams blown with various types of environmentally friendly blowing agents. Plast Rubber Compos 2010; 37: 364–369.

Hwang

Park

Gotoh

et al . Numerical simulations of sloshing flows with elastic baffles by using a particle-based fluid-structure interaction analysis method. Ocean Eng 2016; 118: 227–241.

Mahfuz

Rangari

Islam

et al . Fabrication, synthesis and mechanical characterization of nanoparticles infused polyurethane foams. Compos A 2004; 35: 453–460.

Thirumal

Khastgir

Singha

et al . Effect of foam density on the properties of water blown rigid polyurethane foam. J Appl Polym Sci 2008; 108: 1810–1817.

Yan

Chen

et al . Enhanced mechanical and thermal properties of rigid polyurethane foam composites containing graphene nanosheets and carbon nanotubes. Polym Int 2012; 61: 1107–1114.

Ciecierska

Kowalska

Bazarnik

et al . Flammability, mechanical properties and structure of rigid polyurethane foams with different types of carbon reinforcing materials. Compos Struct 2016; 140: 67–76.

Zhao

Cui

et al . Effect of silica coating thickness on the thermal conductivity of polyurethane/SiO2 coated multiwalled carbon nanotube composites. Compos A 2014; 58: 1–6.

Zhai

Fei

et al . Piezoresistive and compression resistance relaxation behavior of water blown carbon nanotube/polyurethane composite foam. Compos A 2015; 72: 108–114.

10.

Madaleno

Pyrz

Crosky

et al . Processing and characterization of polyurethane nanocomposite foam reinforced with montmorillonite-carbon nanotube hybrids. Compos A 2013; 44: 1–7.

11.

Dolomanova

Rauhe

JCM

Jensen

et al . Mechanical properties and morphology of nano-reinforced rigid PU foam. J Cell Plast 2011; 47: 81–93.

12.

You

Park

Lee

et al . Preparation and characterization of conductive carbon nanotube-polyurethane foam composites. J Mater Sci 2011; 46: 6850–6855.

13.

Zhang

Yilmaz

Schjodt-Thomsen

et al . MWNT reinforced polyurethane foam: processing, characterization and modeling of mechanical properties. Compos Sci Technol 2011; 71: 877–887

14.

Park

Choi

Kim

et al . Effect of blowing agent on the low-temperature mechanical properties of CO₂- and HFC-245fa-blown glass-fiber-reinforced polyurethane foams. Compos B 2016; 93: 317–327.

15.

Shukla

Bhat

SD and

Pillai

VK.

Simultaneous unzipping and sulfonation of multi-walled carbon nanotubes to sulfonated graphene nanoribbons for nanocomposite membranes in polymer electrolyte fuel cells. J Membr Sci 2016; 520: 657–670.

16.

Wei

Ling

Zou

et al . A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents. Colloid Surf A 2015; 482: 507–513.

17.

Scarfato

Maio

LD and

Incarnato

Structure and physical-mechanical properties related to comfort of flexible polyurethane foams for mattress and effects of artificial weathering. Compos B 2017; 109: 45–52.

18.

Turi

(ed.). Thermal characterization of polymeric materials. London: Academic Press, 1981, pp. 619–636.

19.

Thirumal

Khastgir

Singha

et al . Effect of a nanoclay on the mechanical, thermal and flame retardant properties of rigid polyurethane foam. J Macromol Sci A 2009; 46: 704–712.

20.

Wan

Tran

Leblanc

et al . Experimental and computational micro-mechanical investigations of compressive properties of polypropylene/multi-walled carbon nanotubes nanocomposite foams. Mech Mater 2015; 91: 95–118.

21.

Gibson

LJ and

Ashby

MF.

Cellular solids: structure & properties. 2nd ed. Oxford, UK: Pergamon Press, 1999.

22.

Grace

Pilipchuk

Ibrahim

et al . Temperature effect on non-stationary compressive loading response of polymethacrylimide solid foam. Compos Struct 2012; 94: 3052–3063.

23.

Whisler

D and

Kim

Experimental and simulated high strain dynamic loading of polyethane foam. Polym Test 2015; 41: 219–230.

24.

Lee

Kim

Park

et al . Comparative study on applicability of Gurson model for mechanical behavior of polyurethane foam: explicit and implicit analysis considering density effects. Macromol Mater Eng 2016; 301: 694–706.