Chemical modification of carbon black by a simple non-liquid-phase approach

Huang, Jianfeng; Shen, Fei; Li, Xianhui; Zhou, Xuanquan; Li, Binyao; Xu, Renliang; Wu, Chifei

doi:10.1016/j.jcis.2008.08.044

Cited by 22 publications

(10 citation statements)

References 25 publications

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“…Up to now, most of the antioxidant‐loading approaches were conducted in liquid phase , leading to inconvenient processes and more chemical pollutions. A lot of researchers have found that some organic compounds such as antioxidants and light stabilizers can be broken into free radical under external action, such as heat or mechanical shearing force . It gives us some inspirations that these antioxidants with free radicals may be in‐situ captured by the CNTs, even chemically grafted onto them, instead of chemical treatments in liquid phase.…”

Section: Resultsmentioning

confidence: 99%

“…It captures the scientists and engineers' great interests, is widely applied to the automobile, aviation, oilfield, and other industries for the high performance rubber fittings, the seal products, and bearings. Recently, its composites with carbon nanotubes (CNTs) have been even explored as functional materials including thermal, microwave absorbing, electric ones and so on, which provide more advantages over those ones with the traditional carbon nanofillers, such as carbon black due to the high aspect ratios of CNTs . To sustain a long‐term mechanical and chemical stability becomes a basic requirement for them.…”

Section: Introductionmentioning

confidence: 99%

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Improving stability of mechanical properties for nitrile butadiene rubber composite by carbon nanotube with antioxidant loading distribution

Zhang

Chen

et al. 2018

Polymer Composites

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Antioxidants are necessarily used in nitrile butadiene rubber (NBR) products to prolong their lifetimes. But blooming of antioxidants limits the anti‐aging efficiency. Herein, a novel solution was proposed to avoid such a blooming. Antioxidant, 3, 9‐bis‐{1, 1‐dimethyl‐2(β‐[3‐tert‐butyl‐4‐hydroxy‐5‐methylphenyl‐] propionyloxy) ethyl}‐2, 4, 8, 10‐tetraoxaspiro [5, 5]‐undecane (AO‐80) was loaded to carbon nanotubes (CNTs) by chemically grafting after shearing force and then physically melting to encapsulate. In the AO‐80 loaded CNTs (CNT‐AO80), physical loading amounts of antioxidants were 2.1% and strongly suppressed by those parts from chemically grafting (13.9%), developing a distribution around CNTs. CNT‐AO80 therefore maintained a high total loading efficiency of antioxidant and reduced its physical release amounts not to bloom. When 20 phr CNT‐AO80 were doped to NBR, they allowed a good dispersity and reinforcement for rubber matrix. After thermal‐oxidative aging at 70, 80, and 90°C for 60 days, the composite gave an extremely low deterioration of mechanical property. POLYM. COMPOS., 40:E1172–E1180, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving stability of mechanical properties for nitrile butadiene rubber composite by carbon nanotube with antioxidant loading distribution

Zhang

Chen

et al. 2018

Polymer Composites

View full text Add to dashboard Cite

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“…The maximum of the P(d) curve corresponds to the mean particle diameter, and the P(d) broadness is related to the particle size polydispersity index. [12] The original CB particles had a mean diameter of 186 nm, while the mean particle diameter of the m-CB was 98 nm. The difference between the particle size of CB and m-CB indicates that m-CB aggregates were partially broken and the added organic molecular layer formed on the m-CB surface protected the CB from reaggregating, as discussed in our former work.…”

Section: Dispersion Of Cb and M-cb In Acrylic Resinmentioning

confidence: 99%

“…[11] Thus, some other organic compounds, for instance, antioxidants and light stabilizers, that may be broken into free radicals under external action, such as heat or mechanical shearing force, could be trapped by the CB particles. In our previous work, [12] the solid state grafting technique was applied to fabricate grafted CB; a commercial CB (N220) and a low-molecular-weight organic compound (AO80) were blended in a rheology mixer. AO80 is a kind of hindered phenolic antioxidant and is widely used in plastics, elastomers, and synthetic fibers.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Acrylic Resin/Hindered Phenolic Antioxidant (AO80)-modified Carbon Black Nanocomposite

Fang

2011

Journal of Macromolecular Science, Part B

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To improve the dispersion stability of carbon black (CB) in an acrylic resin coating, a hindered phenolic antioxidant (AO80) was chosen to modify the CB by a solid state method based on the blending of CB and AO80 in an internal mixer. The modified CB (m-CB) was directly introduced into the acrylic resin with 50% solid content in butyl acetate by ball milling without any other treatment. That the majority of the m-CB particles were nanosized in ethanol was proven by a particle size analyzer. Transmission electron microscopy (TEM) and field emission scanning electron microscope (FESEM) micrographs indicated that the m-CB particles were also dispersed in the acrylic resin as nanoscale particles. Compared with the unmodified CB, the modification of CB can decrease the viscosity of the acrylic resin/m-CB nanocomposite and improve its flow property. The adhesion and gloss of the acrylic resin/m-CB nanocomposite were also improved. More importantly, the UV shielding and stability of the acrylic resin/m-CB nanocomposite were enhanced.

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“…Therefore, the resistance to solar radiation has much concern with the particle size and type of the CB used as well as to the concentration and dispersion of CB in polymers [8]. To improve the homogeneous dispersion of CB in polymers, surface modification of CB has been investigated by many researchers [9–11]. Many studies of dispersion modification of CB with small molecule were on the nonfunctional small molecule.…”

Section: Introductionmentioning

confidence: 99%

Effect of modified carbon black on the UV/IR screening ability of poly(ethylene terephthalate) transparent films

Zhou

Zhang

et al. 2010

Polymer Composites

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The mixed solution of poly (ethylene terephthalate) (PET)/carbon black (CB) and PET/modified CB (m-CB) were coated on glass substrates to fabricate light screening films. m-CB was prepared using a solid phase modification method through mechanical blending of CB and 2-(2 0 -Hydroxy-5 0 -methylphenyl)-benzotriazole (UV-P) in weight composition of 50 : 50. The results of dynamic light scattering (DLS), optical microscopy, and scanning electron microscopy (SEM) showed that the modification of CB obviously reduced the particle and aggregate sizes of CB, leading to better dispersion of m-CB in PET films. Fourier transform infrared spectroscopy (FTIR) proved that UV-P was grafted on CB after blending and changed the molecular structure of CB. Ultraviolet-visible-Infrared (UV-vis-IR) spectrophotometer tests showed that the UV/IR absorption property of the films improved obviously while the visible light transmittance reduced gradually with the increase of m-CB content from 0.5 to 6 wt%. Differential scanning calorimeter (DSC) results showed the addition of 4 wt% m-CB decreased the crystallinity of PET matrix, which effectively inhibited the destruction of the film transparency with the addition of more CB.

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Chemical modification of carbon black by a simple non-liquid-phase approach

Cited by 22 publications

References 25 publications

Improving stability of mechanical properties for nitrile butadiene rubber composite by carbon nanotube with antioxidant loading distribution

Improving stability of mechanical properties for nitrile butadiene rubber composite by carbon nanotube with antioxidant loading distribution

Preparation and Characterization of Acrylic Resin/Hindered Phenolic Antioxidant (AO80)-modified Carbon Black Nanocomposite

Effect of modified carbon black on the UV/IR screening ability of poly(ethylene terephthalate) transparent films

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