Improved mechanical and functional properties of elastomer/graphite nanocomposites prepared by latex compounding

Yang, Jian; Tian, Ming; Jia, Qiongqiong; Shi, Jun-Hong; Zhang, Liqun; Lim, Sangyeob; Yu, Zhong‐Zhen; Mai, Yiu‐Wing

doi:10.1016/j.actamat.2007.07.043

Cited by 143 publications

(92 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The importance of the processing conditions on the properties of the final material is illustrated in the work of Yang et al [60] who studied composites of nitrile-butadiene rubber (NBR) filled with expanded graphite (EG) prepared by latex compounding and also by direct blending. It was shown that the tensile strength increases substantially with EG content for nanocomposites prepared by the latex compounding method (LCM) (Figure 7a).…”

Section: Tensile Propertiesmentioning

confidence: 99%

Mechanical and Electrical Properties of Elastomer Nanocomposites Based on Different Carbon Nanomaterials

Bokobza¹

2017

View full text Add to dashboard Cite

Carbon nanostructures including carbon black, carbon nanotubes, graphite or graphene have attracted a tremendous interest as fillers for elastomeric compounds. The preparation methods of nanocomposites that have a strong impact on the state of filler dispersion and thus on the properties of the resulting composites, are briefly described. At a same filler loading, considerable improvement in stiffness is imparted to the host polymeric matrix by the carbon nanomaterials with regard to that provided by the conventional carbon black particles. It is mainly attributed to the high aspect ratio of the nanostructures rather than to strong polymer-filler interactions. The orienting capability of the anisotropic fillers under strain as well the formation of a filler network, have to be taken into account to explain the high level of reinforcements. A comparison of the efficiency of the different carbon nanostructures is carried out through their mechanical and electrical properties but no clear picture can be obtained since the composite properties are strongly affected by the state of filler dispersion.

show abstract

Section: Tensile Propertiesmentioning

confidence: 99%

Mechanical and Electrical Properties of Elastomer Nanocomposites Based on Different Carbon Nanomaterials

Bokobza¹

2017

View full text Add to dashboard Cite

show abstract

“…However, all previous work for fabrication of elastomer/graphene nanocomposites avoided this method due to the high graphene production cost and the difficulty in dispersing graphene in the matrix. Zhang et al first compounded an elastomer with microwave-expanded graphite by latex compounding; at ∼10 wt%, thermal conductivity was enhanced from 0.19 to 0.30 W m −1 K −1 , the tensile strength improved from 4 to 12 MPa, but fracture strain reduced [23]. When the same method was applied in mixing natural rubber and graphene oxide, no better thermal conductivity enhancement was reported [24].…”

Section: Introductionmentioning

confidence: 99%

Melt compounding with graphene to develop functional, high-performance elastomers

et al. 2013

View full text Add to dashboard Cite

Rather than using graphene oxide, which is limited by a high defect concentration and cost due to oxidation and reduction, we adopted cost-effective, 3.56 nm thick graphene platelets (GnPs) of high structural integrity to melt compound with an elastomer-ethylene-propylene-diene monomer rubber (EPDM)-using an industrial facility. An elastomer is an amorphous, chemically crosslinked polymer generally having rather low modulus and fracture strength but high fracture strain in comparison with other materials; and upon removal of loading, it is able to return to its original geometry, immediately and completely. It was found that most GnPs dispersed uniformly in the elastomer matrix, although some did form clusters. A percolation threshold of electrical conductivity at 18 vol% GnPs was observed and the elastomer thermal conductivity increased by 417% at 45 vol% GnPs. The modulus and tensile strength increased by 710% and 404% at 26.7 vol% GnPs, respectively. The modulus improvement agrees well with the Guth and Halpin-Tsai models. The reinforcing effect of GnPs was compared with silicate layers and carbon nanotube. Our simple fabrication would prolong the service life of elastomeric products used in dynamic loading, thus reducing thermosetting waste in the environment.

show abstract

“…A third feature of the results is that all the moduli 3 E that are perpendicular to the surface drop steeply at the surface region. A zigzag shape is observed on { } 100 and { } Since we cannot control the pressure in the Z direction, the mechanical performances are solely determined by the microstructural change, i.e., atomic coordination.…”

Section: Simulationsmentioning

confidence: 80%

“…The overall performances of these materials are superior to the simple superposition of the properties of their individual constituents [1][2][3]. In polymer based nano-composites, a polymer region around the nanoparticle, where the material properties deviate from the bulk behavior, has been confirmed experimentally [4][5][6].…”

Section: Introductionmentioning

confidence: 90%

Fast evaluation of local elastic constants and its application to nanosized structures

2015

View full text Add to dashboard Cite

We derive a method to determine the effective local elasticity tensor by combining the local stress, local strain, and global strain in conjunction with a linear least square solver. This method reduces to the standard stress-strain fluctuation method for the estimation of global moduli if the local stress and the local strain are substituted by global counterparts. The quality of the developed method is verified by the analysis of an FCC Lennard-Jones single crystal. By using this method, surface elastic behaviors of three nano-plates are investigated. Simulation results prove that both softening and stiffening effects could be detected, depending on the surface orientations and loading directions. This novel approach could be especially valuable for complicated morphologies where the physical properties of the local material are challenging or impractical to obtain.

show abstract

Improved mechanical and functional properties of elastomer/graphite nanocomposites prepared by latex compounding

Cited by 143 publications

References 57 publications

Mechanical and Electrical Properties of Elastomer Nanocomposites Based on Different Carbon Nanomaterials

Mechanical and Electrical Properties of Elastomer Nanocomposites Based on Different Carbon Nanomaterials

Melt compounding with graphene to develop functional, high-performance elastomers

Fast evaluation of local elastic constants and its application to nanosized structures

Contact Info

Product

Resources

About