Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Ma, Lifeng; Yang, Jie; Guo, Hui

doi:10.3390/polym11091375

Cited by 13 publications

(8 citation statements)

References 34 publications

(40 reference statements)

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“…15 Thermoplastic vulcanizate (TPV), as a kind of highperformance thermoplastic elastomer, is prepared by dynamic vulcanization reaction and consist of a high content of cross-linked rubber as dispersed phase and a low content of thermoplastics as continuous phase. [16][17][18] Due to the above structure characteristics, TPV has an excellent resilience like conventional vulcanized elastomers and good processability like thermoplastics, named as "green rubber." In recent years, much effort has been paid to the development of functional TPV materials.…”

Section: Introductionmentioning

confidence: 99%

Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting MWCNT network formation

Dou

2020

J of Applied Polymer Sci

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Multiwalled carbon nanotubes (MWCNTs) filled thermoplastic vulcanizate (TPV) dielectric elastomer based on polypropylene (PP)/ethylene-propylenediene monomer blends were fabricated via a simple melt compounding. MWCNT could be selectively distributed in PP matrix which induced by the dynamic vulcanization reaction. By reducing the rotor speed of melting blending to 60 rpm, the MWCNT network formation can be effectively inhibited, which have been verified by a higher volume resistivity (above 10 9 Ω cm). With increasing the MWCNTs loading to 4.1 vol%, a maximum increase, 423.4% (from 3.04 to 12.87), of the dielectric constant have been achieved for TPV/MWCNTs elastomer at 10 3 Hz, while the dielectric loss is still lower than 0.072 at 10 1-10 3 Hz. Meanwhile, with various MWCNTs loading, the tensile recovery of these series TPV elastomer does not change anymore, resulting an excellent rebound resistance. The TPV elastomer exhibits an enhanced dielectric performance and balanced elastic recovery performance, providing a simple and scalable melt compounding approach to fabricate high-performance dielectric elastomer.

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Section: Introductionmentioning

confidence: 99%

Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting MWCNT network formation

Dou

2020

J of Applied Polymer Sci

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“…For PP + PA blends, the researchers investigated the influence of adding elastomers: styrene-ethylene-butylene-styrene maleate (SEBS) [27][28][29], ethylene-polypropylene-diene copolymer (EPDM) [26], [30][31][32][33][34]; acryl-butadiene-styrene elastomer (ABS), copolymer block styrene-ethylene-butylene-styrene maleat (SEBS) [21],] [35].…”

Section: Blends Based On Pp and Pa6mentioning

confidence: 99%

Mechanical Characterization of Two Blends PP+PA6+EPDM. Part 2. Results of Tensile Tests

Gg¹,

Lc²,

Am³

et al. 2021

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This paper presents the values of several mechanical characteristics for two blends: H (60% PP + 12% PA6 + 8% EPDM + 20% Polybond 3200) and G (20% PP + 42% PA6 + 28% EPDM + 10% Polybond 3200) (%wt), comparing them to those of PP (polypropylene) and PA6 (polyamide 6). The adding of EPDM (ethylene propylene diene monomer rubber) and Polybond 3200 help reducing the disadvantages of simple blends made of PP+PA6, when the PA6 concentration allows for having a PA6 matrix with droplets of PP. SEM analysis helps for understanding the performance of material G as compared to the neat polymers. EDX analysis proved that there was a matrix inversion, material H having a PP matrix and material G a matrix made of PA6 with droplets of PP. Strain at break for PP and material H were proved to be insensitive to test speed, but materials G and PA6 had large value for strain at break and energy at break for v = 10 mm/min. Taking at basis the values for polyamide 6 (PA6), material G has greater values for energy at break: with 97.8% for v = 10 mm/min, with 29.5% for v= 250 mm/min and with 98% for 1000 mm/min, without exhibiting the micro and macro cavitation of PA6. This means that the recipe, the technology and the mechanical characteristics make material G a potential candidate for applications where a low and moderate impact resistant material is required.

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“…Thus, TPVs have attracted much attention as "green" polymers in recent years and have been widely used in automotive industries, such as sealing strip, engine cover and charge air pipe, and so on. [1][2][3][4] Traditional metal materials are costly, and easy to rust. More and more metal products are replaced by new environmentally friendly materials.…”

Section: Introductionmentioning

confidence: 99%

Polyamide 6‐based thermoplastic vulcanizate for thermostability: An experimental and theoretical investigation

Jiang

2021

J of Applied Polymer Sci

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In engineering cases, nonuniform temperature and pressure loads will cause greater thermal stress and deformation of the structure. The creep of materials will also accelerate with the increase of temperature, which greatly reduces the service life of parts. This study improves the vulcanization effect and twophase compatibility of polyamide 6-based thermoplastic vulcanizates (TPV), and the elastic modulus of the material was increased to resist deformation and creep. The compatibility and mechanical properties of the materials were analyzed by dynamic thermodynamic analysis. The temperature and stress of charge air pipe are numerically calculated by fluid-thermal-solid coupling. The results show that at 120 C, the strain of TPV is less than 3%, and no plastic deformation occurs. Based on the principle of time-temperature superposition, the long-term creep behavior at reference temperature is predicted by stepped isothermal method through short-term temperature rise creep experiment. The creep strain after 10 5 h at 60 C of TPV grafted by maleic anhydride (TPV-g-MAH) is only 2.8%, indicating that it has good durability in the application of charge air pipes.

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Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Cited by 13 publications

References 34 publications

Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting MWCNT network formation

Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting MWCNT network formation

Mechanical Characterization of Two Blends PP+PA6+EPDM. Part 2. Results of Tensile Tests

Polyamide 6‐based thermoplastic vulcanizate for thermostability: An experimental and theoretical investigation

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