High thermal conductivity graphene oxide/carbon nanotubes/butyl rubber composites prepared by a dry ice expansion <scp>pre‐dispersion</scp> flocculation method

Bian, Huiguang; Xue, Junxiu; Hao, Guoqiang; Hao, Yingjie; Xie, Miao; Wang, Chuansheng; Wang, Zhifei; Zhu, Lin; Xiao, Yao

doi:10.1002/app.51897

Cited by 11 publications

(5 citation statements)

References 41 publications

(33 reference statements)

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“…The latex mixing [ 100 , 101 , 114 ] and mechanical mixing [ 115 , 116 , 117 ] methods have also been used for preparing GE/CNT/rubber composites. Li et al [ 100 ] combined GE and CNTs hybrid fillers to reinforce NR, wherein GE/CNT/NR composites were prepared using in situ reduction with NR latex.…”

Section: Rubber Composites With Different Graphene Hybrid Fillersmentioning

confidence: 99%

Graphene-Based Hybrid Fillers for Rubber Composites

Wang,

Li,

Yang

et al. 2024

Molecules

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Graphene and its derivatives have been confirmed to be among the best fillers for rubber due to their excellent properties, such as high mechanical strength, improved interface interaction, and strain-induced crystallization capabilities. Graphene rubber materials can be widely used in tires, shoes, high-barrier conductive seals, electromagnetic shielding seals, shock absorbers, etc. In order to reduce the graphene loading and endow more desirable functions to rubber materials, graphene-based hybrid fillers are extensively employed, which can effectively enhance the performance of rubber composites. This review briefly summarizes the recent research on rubber composites with graphene-based hybrid fillers consisting of carbon black, silica, carbon nanotubes, metal oxide, and one-dimensional nanowires. The preparation methods, performance improvements, and applications of different graphene-based hybrid fillers/rubber composites have been investigated. This study also focuses on methods that can ensure the effectiveness of graphene hybrid fillers in reinforcing rubber composites. Furthermore, the enhanced mechanism of graphene- and graphene derivative-based hybrid fillers in rubber composites is investigated to provide a foundation for future studies.

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Section: Rubber Composites With Different Graphene Hybrid Fillersmentioning

confidence: 99%

Graphene-Based Hybrid Fillers for Rubber Composites

Wang,

Li,

Yang

et al. 2024

Molecules

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“…This method is more eco-friendly compared with solution blending. However, the large amount of deionized water used to disperse CNT dilutes the latex, which makes the CNT tend to settle in the diluted latex and leads to a secondary agglomeration [ 16 ]. Traditional mechanical blending disperses CNT in the matrix by strong shear mixing using an internal mixer, two-roll mill, ball mill, etc.…”

Section: Introductionmentioning

confidence: 99%

Improving Dispersion of Carbon Nanotubes in Natural Rubber by Using Waterjet-Produced Rubber Powder as a Carrier

Guo

Bai

et al. 2023

Polymers

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Carbon nanotube (CNT), as reinforcing agents in natural rubber (NR), has gained a large amount of consideration due to their excellent properties. Uniform dispersion of CNT is the key to obtaining high-performance NR nanocomposites. In this contribution, a novel ultrasonic grinding dispersion method of CNT with waterjet-produced rubber powder (WPRP) as a carrier is proposed. Microscopic morphologies show that a Xanthium-like structure with WPRP as the core and CNTs as the spikes is formed, which significantly improves the dispersion of CNT in the NR matrix and simultaneously strengthens the bonding of the WPRP and NR matrix. With the increase in the WPRP loading, the Payne effect of CNT/WPRP/NR composites decreases, indicating the effectiveness of the dispersion method. The vulcanization MH and ML value and crosslinking density increase with the increase in the WPRP loading, whereas the scorch time and cure time exhibit a decreasing trend when the WPRP loading is less than 15 phr. It is found that the CNT/WPRP/NR composites filled with 5 phr WPRP have a 4% increase in 300% modulus, a 3% increase in tensile strength, while a 5% decrease in Akron abrasion loss, compared to CNT/NR composites.

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“…However, the aggregation of polar fillers is relatively serious during dry mixing, with rapid heat generation, easy scorching, high energy consumption, and serious dust pollution 5 . Wet mixing is the process in which the filler is made into water dispersion, fully mixed with latex in the liquid state, then flocculated, dewatered, and dried to finally prepare the rubber masterbatch 6–8 . Wet mixing not only significantly improves the dispersion of reinforcing fillers, and prepares high‐performance rubber compounds with high filler content, but also reduces energy consumption and adapts to the development of green and energy conservation 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…5 Wet mixing is the process in which the filler is made into water dispersion, fully mixed with latex in the liquid state, then flocculated, dewatered, and dried to finally prepare the rubber masterbatch. [6][7][8] Wet mixing not only significantly improves the dispersion of reinforcing fillers, and prepares high-performance rubber compounds with high filler content, but also reduces energy consumption and adapts to the development of green and energy conservation. 9,10 Xuan et al 11 compared the mixing power curves of rubber compounds by dry mixing and wet mixing, and the results showed that compared with dry mixing, wet mixing reduced the energy consumption by 30%, improved the dispersion of fillers and the mechanical properties of composites.…”

mentioning

confidence: 99%

Wet continuous mixing technology and extrusion rheological properties of carbon black/natural rubber composites

Xiao,

Huang,

et al. 2023

Polymer Engineering & Sci

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In order to solve the problems of dust, low mixing efficiency, and poor quality stability in dry mixing and continuous mixing, this study combined the flocculation extrusion technology with continuous mixing technology of carbon black/additives/natural rubber composites. The flocculation of latex was achieved by carbon black itself and the shearing of the twin screw. The continuous mixing was carried out in a double‐rotor continuous mixer, which was composed of functional elements such as the exhaust section and extrusion section. The results showed that the technology promoted the formation of the filler‐rubber network, the sensitivity of viscosity to temperature was weakened, and the rubber was closer to a Newtonian fluid, with less extrusion swell phenomenon and no obvious spiral distortion. Compared with the dry mixing, the tensile strength, rebound rate, and abrasion resistance of the rubber composites prepared by this technology were increased by 11%, 31%, and 9%, respectively, providing theoretical and technical guidance for the green production and continuous production of high‐performance natural rubber composites.Highlights The process is achieved by a twin‐screw extruder and a twin‐rotor continuous mixer. The process promotes the formation of the filler‐rubber network. The sensitivity of viscosity to temperature is weakened, with no spiral distortion. The tensile strength, rebound rate, and abrasion resistance are increased by 11%, 31%, and 9%.

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High thermal conductivity graphene oxide/carbon nanotubes/butyl rubber composites prepared by a dry ice expansion pre‐dispersion flocculation method

Cited by 11 publications

References 41 publications

Graphene-Based Hybrid Fillers for Rubber Composites

Graphene-Based Hybrid Fillers for Rubber Composites

Improving Dispersion of Carbon Nanotubes in Natural Rubber by Using Waterjet-Produced Rubber Powder as a Carrier

Wet continuous mixing technology and extrusion rheological properties of carbon black/natural rubber composites

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