Preparation and Characterization of Polyurethane/ZnO Nanoparticle Composites

Guo, Chunhuan; Zheng, Zhen; Zhu, Qiren; Wang, Xinling

doi:10.1080/03602550701575789

Cited by 32 publications

(19 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the FRPs' thermal stability can be characterized by their glass transition, their thermo-mechanical performance is manifested by viscoelastic behaviors such as creep and stress relaxation [9][10][11][12][13][14][15]. Polymer matrix composites are prone to growing deformation under constant loads (creep) and tend to carry less load under constant displacement (stress relaxation) in relatively long time periods.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nano-Reinforcement Topologies on the Viscoelastic Performance of Carbon Nanotube/Carbon Fiber Hybrid Composites

et al. 2020

View full text Add to dashboard Cite

In this investigation, multi-walled carbon nanotubes (MWCNTs) were grown over carbon fiber fabrics via a relatively nondestructive synthesis technique. The MWCNTs patches were grown into three different topologies: uniform, fine patterned and coarse patterned. Hybrid carbon fiber-reinforced polymer composites (CFRPs) were fabricated based on the patterned reinforcements. Tensile tests, dynamic mechanical thermal analyses (DMTA) and flexure load relaxation tests were carried out to investigate the effect of the patterned nano-reinforcement on the static, dynamic, glass transition, and viscoelastic performance of the hybrid composites. Results revealed that the hybrid composite based on fine-patterned topology achieved better performance over all other configurations as it exhibited about 19% improvement in both the strength and modulus over the reference composite with no MWCNTs. Additionally, the increase in glass transition for this composite was as high as 13%. The damping parameter (tan δ) was improved by 46%. The stress relaxation results underlined the importance of patterned MWCNTs in minimizing the stress decay at elevated temperatures and loading conditions. Utilizing patterned MWCNTs topology significantly reduced the stress decay percentage at the thermomechanical conditions 60 MPa and 75 °C from 16.7% to 7.8%. These improvements are attributed to both the enhanced adhesion and large interface area by placing MWCNTs and by inducing an interlocking mechanism that allows the interaction of the three constituents in load transfer, crack deflection and hindering undesired viscoelastic deformations under different thermomechanical loadings.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Nano-Reinforcement Topologies on the Viscoelastic Performance of Carbon Nanotube/Carbon Fiber Hybrid Composites

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Siloxane‐based polyurethanes (PUS) are an important class of polymer materials for a variety of applications . Different research groups have focused on incorporation of different fillers, such as TiO 2 , SiO 2 , ZnO, clay, and especially CNT nanoparticles to improve properties of polyurethanes …”

Section: Introductionmentioning

confidence: 99%

Polyurethane/amino‐grafted multiwalled carbon nanotube nanocomposites: Microstructure, thermal, mechanical, and rheological properties

Askari

Barikani

Barmar

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

A mixture of two different polyols, (polytetramethylene ether glycol and polydimethylsiloxane), were employed to synthesize a new structure of polyurethane (PU) with methylene diphenyl diisocyanate (MDI) and 1,4-butanediol as chain extender. PU nanocomposites containing variable amount (0.3, 0.5, 1, and 3 wt %) of amino-grafted multiwalled carbon nanotubes (NH 2 -MWNT) were prepared via in situ polymerization. The dispersion of NH 2 -MWNT into polymer matrix was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Fourier transform infrared spectroscopy (FT-IR) confirmed the urethane-urea chemical bonding between the PU chains and the NH 2 -MWNT. Thermal stabilities of the nanocomposites were examined with thermogravimetric analysis (TGA) and the results indicated a remarkable improvement with increasing NH 2 -MWNT contents. The results of dynamic mechanical thermal analysis (DMTA) including storage modulus (E 0 ) and glass transition temperature (T g ), as well as tensile properties demonstrated that the yield strength, strain-at-break, and young modulus were enhanced by increasing NH 2 -MWNT content. Rheological behavior including complex viscosity and storage and loss moduli of the PU nanocomposites improved with increasing NH 2 -MWNT loading, as well.

show abstract

“…The insufficient resistance of FRPs to viscoplastic deformations can be mitigated by the addition of nanofillers to the polymeric matrix. Nanofillers were utilized to modify the viscoplastic behavior of polymer matrix composites [2]. The presence of nanofillers could compensate for the viscous properties of polymers up to an extent; however, it brings about other changes such as reducing the ductility and altering the 3 electrical/thermal properties of the composite.…”

Section: Introductionmentioning

confidence: 99%

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Skandani

Al-Haik

2016

Composites Part B: Engineering

View full text Add to dashboard Cite

This investigation illuminates the effect of surface grown carbon nanotubes (CNTs) on the viscoplastic behavior of fiber reinforced plastics (FRPs). The study demonstrates the feasibility of growing CNTs on conventional woven carbon fibers without degrading the fibers structural properties. The subsequent hierarchal reinforcement was utilized to fabricate laminated FRPs. The viscoplastic behaviors of the hybrid composites were investigated through series of stress relaxation and creep tests at different thermomechanical environments. The results of the experimental tests were utilized to both construct and validate a phenomenological viscoplastic constitutive model of the hybrid FRPs. The experiments and the model predictions established that surface grown CNTs could enhance the composite resistance to viscoplastic deformation.

show abstract

Preparation and Characterization of Polyurethane/ZnO Nanoparticle Composites

Cited by 32 publications

References 33 publications

Effect of Nano-Reinforcement Topologies on the Viscoelastic Performance of Carbon Nanotube/Carbon Fiber Hybrid Composites

Effect of Nano-Reinforcement Topologies on the Viscoelastic Performance of Carbon Nanotube/Carbon Fiber Hybrid Composites

Polyurethane/amino‐grafted multiwalled carbon nanotube nanocomposites: Microstructure, thermal, mechanical, and rheological properties

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Contact Info

Product

Resources

About