A novel method to incorporate functional filler into TPSiV for balanced physical properties

Zhao, Guojie; Tian, Ke; Pan, Qinjun; Zhang, Qin; Deng, Hua; Fu, Qiang

doi:10.1016/j.compscitech.2021.108925

Cited by 14 publications

(8 citation statements)

References 49 publications

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“…The unique phase morphology provides TPV with excellent vulcanized rubber elasticity at room temperature and melt processability at high temperatures 1,9 . Therefore, TPVs, characterized by superior performance, excellent processability, capable of being reprocessed and versatile in molding methods, have attracted extensive attention from academia to industry, making them widely used in the automotives, electronics, wires, cables, and constructions 10–14 . Statistically, as a typical “green” and sustainable polymer, TPV materials have gradually replaced the non‐recyclable petroleum‐based thermoset materials and become the fastest growing thermoplastic elastomer with an annual growth rate of 15% 15 .…”

Section: Introductionmentioning

confidence: 99%

“…1,9 Therefore, TPVs, characterized by superior performance, excellent processability, capable of being reprocessed and versatile in molding methods, have attracted extensive attention from academia to industry, making them widely used in the automotives, electronics, wires, cables, and constructions. [10][11][12][13][14] Statistically, as a typical "green" and sustainable polymer, TPV materials have gradually replaced the non-recyclable petroleum-based thermoset materials and become the fastest growing thermoplastic elastomer with an annual growth rate of 15%. 15 Hence, the development of a variety of high-performance, functional TPV materials is of great significance for environmental protection and resource conservation.…”

Section: Introductionmentioning

confidence: 99%

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Thermoplastic vulcanizates with an integration of good mechanical performance and excellent resistance to high temperature and oil based on HNBR/TPEE

Cui

Jing

Wang

et al. 2022

Polymers for Advanced Techs

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Thermoplastic vulcanizates (TPVs), with a combination of excellent resilience of conventional elastomer and re-processibility of thermoplastic, have been widely explored both in academia and industry in recent years. Herein, a new type of thermoplastic vulcanizates with good mechanical performance, excellent resistance to high temperature and oil has been successfully developed based on hydrogenated acrylonitrile butadiene rubber (HNBR) and thermoplastic polyester elastomer (TPEE) by the masterbatch procedure of dynamic vulcanization. The effect of composition ratio of rubber phase/plastic phase (R/P ratio) on the mechanical properties, rheological properties, micromorphology, thermal stability, high temperature-and oil-resistance of HNBR/TPEE TPV was systematically investigated. The results show that all HNBR/TPEE TPVs exhibit good tensile strength, low hardness, superior stretchability (≥880% elongation at break) and high elasticity (only 13% residual strain when stretched at 50% strain). Interestingly, with the increase in R/P ratio, the hardness of TPVs is decreased linearly and the elasticity increases. Besides, by combining the morphology study and rubber processing analyzer suggest that size of the dispersed rubber phase domains increases significantly as R/P ratio increases, which strengthen the rubber network, creating a better elasticity but reduces the rheological properties of TPVs. In addition, the thermogravimetric analysis shows that the thermal stability of TPV improved with the increase of R/P ratio. HNBR/TPEE TPV shows excellent high temperature-and oil-resistance after aging which is expected to be used in automotive applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermoplastic vulcanizates with an integration of good mechanical performance and excellent resistance to high temperature and oil based on HNBR/TPEE

Cui

Jing

Wang

et al. 2022

Polymers for Advanced Techs

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“…The results show that compared with the pure TPU porous material, the addition of the MWCNT with a lower content significantly reduces Young’s modulus, tensile strength, and fracture elongation; at a lower MWCNT content, as the MWCNT content increases, the tensile strength and Young’s modulus of the composite porous materials gradually increase, and the fracture elongation decreases significantly. However, when the filler content is too high, the tensile strength, Young’s modulus, and fracture elongation of the single-layer TPU/MWCNT porous materials at 20C sharply decrease. During the preparation of porous materials by phase separation, the low-viscosity TPU composite solution with a low MWCNT content causes deionized water to accumulate in the solution during penetration, forming a retention layer, leaving large residual cells after subsequent washing and drying, which produces the larger pores observed in SEM.…”

Section: Resultsmentioning

confidence: 99%

Submicron Porous Gradient TPU/MWCNT Foam with Electromagnetic Shielding Performance

Wang,

Zheng

et al. 2023

ACS Appl. Polym. Mater.

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The widespread use of electronic products has led to serious electromagnetic pollution, which poses potential threats to communication systems and human health. The electromagnetic shielding effect can be significantly improved by increasing the conductivity of electromagnetic shielding materials, but impedance mismatch effects and serious secondary pollution are inevitable. Based on the nonsolvent-induced phase separation method, a gradient submicrometer porous structure sample was developed in this paper. Its continuous gradient conductive porous structure effectively improved excessive electromagnetic wave reflection pollution and the impedance mismatch effect. The thermoplastic polyurethane (TPU) and multiwalled carbon nanotube (MWCNT) blend solutions with different contents of MWCNT were deposited on the surface of the porous TPU/MWCNT material and induced in situ phase transformation repeatedly, and a multilayer porous material with gradient conductivity and a microcell structure was prepared. The cell size of the prepared TPU/MWCNT porous material is around 4 μm, which is much smaller than the size range of the existing electromagnetic shielding porous materials. The multilayer TPU/MWCNT porous materials effectively alleviate the impedance mismatch between the materials and the surrounding environment. The values of the total shielding effectiveness (SET) of the multilayer porous materials have reached over 24 dB, and the values of the reflective shielding effectiveness (SER) are less than 3 dB. The tensile test results show that the mechanical properties of the three-layer porous material present typical isotropic elastic polymer characteristics. The stress–strain curve is similar to that of the single-layer TPU/MWCNT porous material, and the tensile fracture section proves the stability of the bonding between the layers of the porous material. Moreover, the materials showed excellent flexibility performance in tensile, bending, and twisting tests. Therefore, the results of this study will have prospects in the application of flexible and high-performance electromagnetic shielding porous composite materials.

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“…1,15,16 With resource conservation and sustainable development requirements, TPVs as sustainable materials with excellent performance and good re-processability, have replaced part of the thermoset vulcanized rubber products in different applications. [17][18][19] Notably, academics have developed heat-and oil-resistant TPV categories based on special rubbers to overcome the limitations of general TPVs in certain extreme environments (continuous use temperatures above 125 C and good oil resistance are required). [20][21][22] These TPV categories are particularly suitable for automotive seals and oil pipelines, among other applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of dynamic vulcanization time on the performance of thermoplastic vulcanizates based on hydrogenated acrylonitrile butadiene rubber/thermoplastic polyester elastomer

Cui,

Wang,

Wei

et al. 2023

J of Applied Polymer Sci

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Thermoplastic vulcanizates (TPVs) are obtained by dynamic vulcanization (DV). Time is a crucial processing parameter. This work aims to develop heat‐ and oil‐resistant TPVs with hydrogenated acrylonitrile butadiene rubber (HNBR) and thermoplastic polyester elastomer (TPEE). It focuses on the effect of DV time on the morphology and properties of the resulting TPVs. The investigation demonstrates that as the DV time increases from 2 to 6 min, the rubber network progressively reinforces and the HNBR domain size decreases under more adequate shearing action, resulting in a more homogeneous morphology. This leads to a significant improvement in tensile properties, elasticity, rheological properties, thermal stability, and oil resistance of the TPV. A further extension in DV time (over 8 min) results in a slight deterioration in elasticity and thermal stability of the TPV because of excessive degradation of the TPEE. Accordingly, an appropriate DV time for HNBR/TPEE‐TPV preparation is between 6 and 8 min under the specified DV conditions.

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A novel method to incorporate functional filler into TPSiV for balanced physical properties

Cited by 14 publications

References 49 publications

Thermoplastic vulcanizates with an integration of good mechanical performance and excellent resistance to high temperature and oil based on HNBR/TPEE

Thermoplastic vulcanizates with an integration of good mechanical performance and excellent resistance to high temperature and oil based on HNBR/TPEE

Submicron Porous Gradient TPU/MWCNT Foam with Electromagnetic Shielding Performance

Effect of dynamic vulcanization time on the performance of thermoplastic vulcanizates based on hydrogenated acrylonitrile butadiene rubber/thermoplastic polyester elastomer

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