In situ polymerization and mechanical, thermal properties of polyurethane/graphene oxide/epoxy nanocomposites

Li, Yuqi; Pan, Diyuan; Chen, Shoubin; Wang, Qihua; Pan, Guangqin; Wang, Tingmei

doi:10.1016/j.matdes.2012.12.077

Cited by 157 publications

(81 citation statements)

References 25 publications

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“…As a result, a 'tortuous path' is provided to increase the exchanging pathway of heat and mass between gaseous and condensed phases in association with the improvement in the thermal stability and fire safety of polymers [20][21][22][23][24][25][26][27]. Second, graphene and GO have a large specific surface area and can effectively adsorb flammable organic volatiles or hinder their release and diffusion during combustion; they also can provide a catalytic and carbonization platform for other materials like metallic oxide [23,[28][29][30][31][32]. Third, graphene and GO contain abundant reactive oxygencontaining groups (carboxyl group at edges as well as epoxy and hydroxyl groups on the basal planes) and may find a wide range of applications in engineering.…”

Section: Graphene and Graphene Oxide Flame Retardantsmentioning

confidence: 99%

Graphene-based flame retardants: a review

Sang

et al. 2016

J Mater Sci

185

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Graphene and its derivatives are potential flame retardant materials with good flame retardant performance; in particular, graphene as an adjuvant in combination with inorganic nanomaterials may be a promising candidate of flame retardant. This review describes the flame retardant mechanism, the development trend, and the classification of graphene-based flame retardants. It points out that graphene has attracted intensive interests in the fields of electronics, energy, and information, due to its excellent properties such as high thermal conductivity, good electron transport ability, and large specific surface area. In the meantime, graphene can change the pyrolysis as well as the thermal conductivity, heat absorption, viscosity and dripping of polymer during the combustion process. In other words, graphene can improve the thermal stability of polymer and delay its ignition, and it can also inhibit fire from spreading and reduce heat release rate.

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Section: Graphene and Graphene Oxide Flame Retardantsmentioning

confidence: 99%

Graphene-based flame retardants: a review

Sang

et al. 2016

J Mater Sci

185

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“…In addition, the filler agglomerates in the epoxy composites can delaminate or slip by each other during the external role process due to the weak adhesion between both the sheet/sheet and sheet/ matrix. In general, a significant improvement in the mechanical properties is attributed to the strong interaction between TLCP-g-GO and epoxy matrix, so that the efficient load transfer between nanosheets and the epoxy matrix [46,47]. Moreover, the nanosheets may serve as connecting bridges to prevent the matrix from fracturing upon mechanical deformation, thus enhancing the mechanical properties of epoxy.…”

Section: Mechanical Properties Of Nanocompositesmentioning

confidence: 99%

Enhanced thermal and mechanical properties of epoxy composites by mixing thermotropic liquid crystalline epoxy grafted graphene oxide

Qi¹,

Lu²,

Xiao³

et al. 2014

Express Polym. Lett.

111

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Abstract. Graphene oxide (GO) sheets were chemically grafted with thermotropic liquid crystalline epoxy (TLCP). Then we fabricated composites using TLCP-g-GO as reinforcing filler. The mechanical properties and thermal properties of composites were systematically investigated. It is found that the thermal and mechanical properties of the composites are enhanced effectively by the addition of fillers. For instance, the composites containing 1.0 wt% of TLCP-g-GO present impact strength of 51.43 kJ/m 2 , the tensile strength of composites increase from 55.43 to 80.85 MPa, the flexural modulus of the composites increase by more than 48%. Furthermore, the incorporation of fillers is effective to improve the glass transition temperature and thermal stability of the composites. Therefore, the presence of the TLCP-g-GO in the epoxy matrix could make epoxy not only stronger but also tougher.

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“…Previous studies indicated that GO can enhance the mechanical properties of PCL matrix [12,13]. It has also been used to reinforce other polymer matrices, such as natural rubber [14], poly(arylene ether nitrile) [15], poly(vinyl chloride) [16], epoxy [17], silicone [18], polyurethane [19], poly(butylene succinate) [20], elastomer [21] and PP [22].…”

Section: Introductionmentioning

confidence: 99%

Structural Effects of Residual Groups of Graphene Oxide on Poly(ε-Caprolactone)/Graphene Oxide Nanocomposite

Duan

et al. 2018

Crystals

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Abstract:In this work, the crystallization behaviors, such as degree of crystallinity and crystalline thickness of poly(ε-caprolactone) (PCL) matrix with the incorporation of graphene oxide (GO) and their evolution with time were examined in order to better understand the influences of residual groups of GO on the semi-crystalline polyester. The results showed that the residual strong oxidizing debris on the GO surface could induce the degradation of amorphous parts in PCL matrix. Moreover, the increasing degree of crystallinity and almost constant crystalline thickness implies that oxidative degradation cannot degrade the crystal structure of PCL matrix.

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In situ polymerization and mechanical, thermal properties of polyurethane/graphene oxide/epoxy nanocomposites

Cited by 157 publications

References 25 publications

Graphene-based flame retardants: a review

Graphene-based flame retardants: a review

Enhanced thermal and mechanical properties of epoxy composites by mixing thermotropic liquid crystalline epoxy grafted graphene oxide

Structural Effects of Residual Groups of Graphene Oxide on Poly(ε-Caprolactone)/Graphene Oxide Nanocomposite

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