Rational design of advanced elastomer nanocomposites towards extremely energy-saving tires based on macromolecular assembly strategy

Qin, Xuan; Han, Bin; Lu, Jiang; Wang, Zhao; Sun, Zheng; Wang, Dong; Russell, Thomas P.; Zhang, Liqun; Li, Jun

doi:10.1016/j.nanoen.2018.03.038

Cited by 67 publications

(57 citation statements)

References 26 publications

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“…As we reported elsewhere (Qin et al, 2018), polyurethane elastomer materials, with nano-particles chemically end-linked, have remarkably low dynamic hysteresis loss. The polyurethane features the presence of the urethane group on the macromolecular chain with a more or less frequency (Cooper and Tobolsky, 1967), which is a versatile copolymer consisting of alternating flexible soft segments and rigid hard segments (Liff et al, 2007; Jiang et al, 2015).…”

Section: Introductionsupporting

confidence: 77%

“…To address this challenge, we put forward a new thought (Qin et al, 2018): we replace polyester polyols and polyether polyols of the soft segments of existing polyurethane materials with hydroxyl-terminated solution-polymerized styrene-butadiene rubber (HTSSBR) of designed and optimized molecule structure. HTSSBR exhibits a glass transition temperature that can be easily adjusted in a wide temperature range, and HTSSBR with relatively high levels of 1,2-butadiene and low levels of styrene possessed glass transition temperature of–25~–15°C measured by DSC.…”

Section: Introductionmentioning

confidence: 99%

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Novel Design of Eco-Friendly Super Elastomer Materials With Optimized Hard Segments Micro-Structure: Toward Next-Generation High-Performance Tires

et al. 2018

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Recently, sustainable development has become a significant concern globally, and the energy crisis is one of the top priorities. From the perspective of the industrial application of polymeric materials, rubber tires are critically important in our daily lives. However, the energy consumption of tires can reach 6% of the world's total energy consumption per annum. Meanwhile, it is calculated that around 5% of carbon dioxide comes from the emission of tire rolling due to energy consumption. To overcome these severe energy and environmental challenges, designing and developing a high-performance fuel-saving tire is of paramount significance. Herein, a next-generation, eco-friendly super elastomer material based on macromolecular assembly technology has been fabricated. Hydroxyl-terminated solution-polymerized styrene-butadiene rubber (HTSSBR) with high vinyl contents prepared by anionic polymerization is used as flexible soft segments to obtain excellent wet skid resistance. Furthermore, highly symmetrical 1,5-naphthalene diisocyanate (NDI), different proportions of chain extender, and the cross-linking agent with moderate molecular length are selected as rigid hard segments to achieve simultaneous high heat resistance. Through this approach, a homogeneous network supported by uniformly distributed hard segment nanoparticles is formed because soft segments with equal length are chemically end-linked by the hard segments. This super elastomer material exhibits excellent wear resistance and low rolling resistance. More importantly, the wear resistance, rolling resistance, and wet-skid resistance are reduced by 85.4, 42.3, and 20.8%, respectively, compared to the elastomeric material conventionally used for tire. By taking advantage of this excellent comprehensive service performance, the long-standing challenge of the “magic triangle” plaguing the rubber tire industry for almost 100 years is resolved. It is anticipated that this newly designed and fabricated elastomeric material tailored for tires will become the next generation product, which could exhibit high potential for significantly cutting the fuel consumption and reducing the emission of carbon dioxide.

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Section: Introductionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Novel Design of Eco-Friendly Super Elastomer Materials With Optimized Hard Segments Micro-Structure: Toward Next-Generation High-Performance Tires

et al. 2018

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“…Therefore, subsequently we employed a typical elastomer, polyurethane, to achieve the enhanced network morphology via the macromolecular self-assembly, based on hydroxy-terminated solution-polymerized styrene-butadiene copolymers with highly symmetric isocyanates and polyols. [16] Although it represents a remarkable progress, in terms of the energy dissipation and the abrasion resistance, the synthesis route is costly and relatively complicated.…”

mentioning

confidence: 99%

Self‐Assembly Strategy for Double Network Elastomer Nanocomposites with Ultralow Energy Consumption and Ultrahigh Wear Resistance

Qin

Wang²,

Wang

et al. 2020

Adv Funct Materials

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One of environmental crises facing the world is due to rubber auto tires destruction pollution. Tires' exploitation in vehicles consumes 6 % of the world's energy and causes 5 % of carbon dioxide emissions; it releases up to 10 % of the microplastic pollution found in oceans.We designed a new rubber nanocomposite self-assembled from hard and soft elastomer matrixes: the polybutadiene with two hydroxy chain ends reacted with 4,4'-diphenylmethane diisocyanate to form segmented polyurethane. This system first undergoes a self-assembly, forming well-defined nanoscale hard domains distributed in the soft matrix. Then, cross-linking between the soft segments was accomplished by a controlled radiation method, resulting in the double network elastomer (DN-E). Remarkably, DN-E exhibited the lowest reported loss factor value at 60 o C. The index of energy dissipation in the rolling tire This article is protected by copyright. All rights reserved. 3 demonstrated a prominent reduction of 72 %, accomplished with 88 % decrease in energy loss, and 85 % less wear loss, as compared with best earlier reported commercial tires. These new double-network materials open a new prospective for design and fabrication of ultralow energy-consumption and strong abrasion-resistance elastomers, which establishes a milestone for the development of the next generation of green low pollution tires causing much less energy dissipation.

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“…The diisocyanate type, the diisocyanate ratio, and the HS domain aggregation structure are major points associated with the polyurethane heat-resistance performance. [9][10][11] Herein, with the same diisocyanate, the size and distribution of the HS domain were considered to be the most important responsibility for heat-resistance performance of the TPUs. The uniform HS domain means high heat-resistance performance.…”

Section: Heat Resistance Performancementioning

confidence: 99%

“…[8] In our previous work, the increase of HS content could significantly improve the heat-resistance performance of polyurethane. [9][10][11] To a given molecular weight of macroglycols and chain extender, the HS content could only be increased with a high dosage of diisocyanate. [10][11][12][13][14][15] However, the high amount of diisocyanate could result in wide distribution of HS, which was not beneficial for high-performance TPUs.…”

Section: Introductionmentioning

confidence: 99%

New Stratagem for Designing High‐Performance Thermoplastic Polyurethane by Using a New Chain Extender

Shou

et al. 2021

Macro Chemistry & Physics

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The high content and regular distribution of hard segment (HS) are necessary to achieve high‐performance thermoplastic polyurethane (TPU), and the HS unit of TPU is generated from the reaction of diisocyanate and chain extender. However, the traditional chain extenders are mainly aliphatic diol that cannot provide rigid groups to improve polyurethane performances. Herein, a novel chain extender bis(hydroxyethyloxycarbonylamino)hexane (BHH) that contains two urethane groups is designed and used to construct high‐performance TPU by increasing content and regular distribution of HS. BHH is synthesized using ethylene carbonate (EC) and hexamethylenediamine (HDA) via a ring‐opening reaction. Subsequently, the effect of BHH on the polyurethane performances is studied with respect to a typical TPU by using polytetramethylene ether glycol (PTMG) and hexamethylene diisocyanate (HDI) as the starting materials. The amount of HDI considerably differs for each polyurethane, aiming to ensure the same total content of urethane groups. When compared with the traditional ethylene glycol‐extended polyurethane, the size and distribution of the HS domains of the BHH‐extended polyurethane are obviously more homogeneous, which proves BHH‐extended polyurethane has better microphase separation. Furthermore, ordered hydrogen bonding, the mechanical properties, and heat‐resistance performance are significantly improved, suggesting a potential method to design TPU delivering outstanding performance.

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Rational design of advanced elastomer nanocomposites towards extremely energy-saving tires based on macromolecular assembly strategy

Cited by 67 publications

References 26 publications

Novel Design of Eco-Friendly Super Elastomer Materials With Optimized Hard Segments Micro-Structure: Toward Next-Generation High-Performance Tires

Novel Design of Eco-Friendly Super Elastomer Materials With Optimized Hard Segments Micro-Structure: Toward Next-Generation High-Performance Tires

Self‐Assembly Strategy for Double Network Elastomer Nanocomposites with Ultralow Energy Consumption and Ultrahigh Wear Resistance

New Stratagem for Designing High‐Performance Thermoplastic Polyurethane by Using a New Chain Extender

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