Thermal-oxidative aging behavior of nitrile-butadiene rubber/functional LDHs composites

He, Xianru; Li, Tianxiang; Shi, Zhengren; Wang, Xin; Xue, Fei; Wu, Zihong; Chen, Qian

doi:10.1016/j.polymdegradstab.2016.08.018

Cited by 33 publications

(43 citation statements)

References 43 publications

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“…However, for after aged NBR/GO–PPD sample, the diffraction peak of GO–PPD at 8.1° disappeared. This can be explained by that the GO–PPD exfoliation phenomenon appeared in the aging processing of rubber [ 4 ].…”

Section: Resultsmentioning

confidence: 99%

“…Due to its superior oil resistivity, nitrile rubber (NBR) has been widely applied for production of oil seal devices. Generally, in real conditions, NBR elastomer components are exposed to various fluids, such as crude oil, various petroleum products, gas condensates, natural gas, CO 2 and H 2 S. Furthermore, NBR elastomer products usually work at an elevated temperature (up to 120 °C) and high pressure, at the same time [ 4 , 5 , 6 ]. However, the existence of unsaturated isolated double bonds makes it easy for NBR to be decomposed by oxygen, especially under conditions of high heat and pressure [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, in real conditions, NBR elastomer components are exposed to various fluids, such as crude oil, various petroleum products, gas condensates, natural gas, CO 2 and H 2 S. Furthermore, NBR elastomer products usually work at an elevated temperature (up to 120 °C) and high pressure, at the same time [ 4 , 5 , 6 ]. However, the existence of unsaturated isolated double bonds makes it easy for NBR to be decomposed by oxygen, especially under conditions of high heat and pressure [ 4 ]. For this case, many nanofillers have been applied to improve thermal stability of NBR, including silica [ 7 ], carbon nanotube [ 8 ], Fe 3 O 4 [ 9 ], graphene, etc.…”

Section: Introductionmentioning

confidence: 99%

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Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide

Zhong

Zhang

Zhao³

et al. 2018

Materials

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Graphene oxide (GO), modified with anti-aging agent p-phenylenediamine (PPD), was added into nitrile rubber (NBR) in order to improve the thermo-oxidative stability of NBR. The modification of GO and the transformation of functional groups were characterized by Fourier transform infrared spectroscopy (FTIR), Raman, and X-ray diffraction (XRD). Mechanical performances of NBR composites before and after the thermo-oxidative aging were recorded. The results of dynamic mechanical analysis (DMA) show an increased storage modulus (G’) and a decreased value of area of tan δ peak after introducing modified GO into NBR. It indicates that filler particles show positive interaction with molecular chains. The thermo-oxidative stability of composites was investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). Then, the thermo-oxidative aging kinetic parameters were obtained by the Flynn–Wall–Ozawa (FWO) equation. The results of aging tests show that the thermo-oxidative stability of rubber matrix increases obviously after introducing GO–PPD. In addition, mechanical properties (tensile strength and elongation at break) of both before and after aged NBR/GO–PPD composites were superior to that of NBR. This work provides meaningful guidance for achieving multifunction thermo-oxidative aging resistance rubber composites.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide

Zhong

Zhang

Zhao³

et al. 2018

Materials

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“…Also XRD pattern of ALDH showed some maxima reflection at 3.75°, 5.61°, 9.81°, 12.88° and 15.13° of 2 θ . The presence of the maxima reflection indicated that the two modified LDH are highly crystalline . The XRD pattern of ILDH revealed a multilayer structure due to the basal reflection maximum (003) at 2 θ = 3.12°, while the XRD pattern of ALDH revealed the basal reflection maximum (003) at 2 θ = 3.75°.…”

Section: Characterization Of the Pai/ldh Nanocomposites (Painc)mentioning

confidence: 98%

Preparation and characterization of poly(amide‐imide)/Mg‐Al LDH nanocomposites; effect of organo‐modified LDH on thermal properties and morphology

Hajibeygi

Omidi-Ghallemohamadi

2017

Polymer Composites

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New poly(amide‐imide) Mg‐Al/layered double hydroxide (LDH) nanocomposites (PAINC) were prepared from synthesized poly(amide‐imide) (PAI) containing sulfone and ether linkages with two new organo modified Mg‐Al LDH (OLDH) by solution intercalation technique. OLDH were prepared from two different organo modifier with and without imide heterocyclic structure by one step method. The results of X‐ray diffraction (XRD), field emission‐scanning electron microscopy (FE‐SEM) and transmission electron microscopy (TEM) showed uniform distribution for LDH sheets in the PAI matrix. Thermal properties of all the samples were studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The thermal properties results showed that by OLDH loading in PAI matrix the thermal stabilities were increased. The temperature at 5% mass loss (T5) was increased from 225°C to 300°C for PAINC containing 5 mass% of OLDH containing imide hetrocyclic rings. The theoretical study indicated that the d‐value of OLDH has been related to structure of its organo‐modifier. POLYM. COMPOS., 39:E1669–E1681, 2018. © 2017 Society of Plastics Engineers

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“…In the past decades, nanoparticles have received increasing interest owing to its unique structural and surface properties. There are many nanoparticles have been applied to improve the performances of rubber, such as graphene [5][6][7][8], layered double hydroxide [9,10], nano silica [11], carbon nano tubes [12], montmorillonite [13,14], ect. The properties of nanocomposites are better than that of conventional composites in the same composition due to the quantum effect and surface effect caused by the small…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide Modified with Organic Amine on the Aging Resistance, Rolling Loss and Wet-Skid Resistance of Solution Polymerized Styrene-Butadiene Rubber

Wan

Zhao³

et al. 2020

Materials

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Graphene oxide (GO) was modified by p-phenylenediamine (PPD), aiming at improving the wet-skid resistance and reduce the rolling loss of solution polymerized styrene-butadiene rubber (SSBR). PPD with amino groups enabled GO to obtain anti-aging function. The structure of modified GO (PPD-GO) was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Raman spectroscopy. Mechanical tests showed that the mechanical properties of SSBR before and after aging were improved by adding PPD-GO. The results of thermogravimetric-differential scanning calorimeter synchronization analysis (TGA-DSC) indicated that SSBR/PPD-GO obtained good thermo-oxidative stability. The dynamic mechanical analysis (DMA) of SSBR composites showed that the mechanical loss factor (tanδ) peak moved to high temperature with the content of PPD-GO. The tanδ values of SSBR composites showed that it had a good effect on improving the wet-skid resistance and reducing the rolling loss of SSBR by adjusting the content of PPD-GO. In particular, with the addition of 4 phr GO, SSBR was effectively improved in mechanical properties, aging resistance, wet-skid resistance and low rolling loss.

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Thermal-oxidative aging behavior of nitrile-butadiene rubber/functional LDHs composites

Cited by 33 publications

References 43 publications

Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide

Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide

Preparation and characterization of poly(amide‐imide)/Mg‐Al LDH nanocomposites; effect of organo‐modified LDH on thermal properties and morphology

Effect of Graphene Oxide Modified with Organic Amine on the Aging Resistance, Rolling Loss and Wet-Skid Resistance of Solution Polymerized Styrene-Butadiene Rubber

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