Dynamically vulcanized PP/EPDM blends with balanced stiffness and toughness via in-situ compatibilization of MAA and excess ZnO nanoparticles: Preparation, structure and properties

Xu, Chuanhui; Zheng, Zhongjie; Wu, Wenchao; Wang, Zhiwei; Fu, Lihua

doi:10.1016/j.compositesb.2018.10.014

Cited by 79 publications

(52 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 35–39 ] The compatibilizer generated in situ exhibits better dispersion and smaller size, which can significantly affect the phase morphology of TPVs and the size of the rubber domains. [ 40–42 ] Mani et al [ 43 ] prepared an in situ formed grafted copolymer, which reduced the diameter of the polydimethylsiloxane from 16.5 to 0.6 μm. In most cases, the addition of a compatibilizer may improve both tensile strength and elongation at break of TPVs and decrease the diameter of rubber particles.…”

Section: Introductionmentioning

confidence: 99%

Silica‐reinforced ethylene propylene diene monomer/polypropylene thermoplastic vulcanizates with interfacial compatibilized by methylacrylate

Xiong

Cui

et al. 2020

Polymer Composites

Self Cite

View full text Add to dashboard Cite

Increasing the interfacial adhesion with compatibilizer has been proved to be an effective method to enhance the mechanical properties of composites. In this paper, sodium methacrylate (NaMAA) was introduced to enhance the interfacial adhesion between polypropylene (PP) and ethylene propylene diene monomer (EPDM) via the peroxide‐induced dynamic vulcanization. NaMAA‐induced compatibilization enhanced the phase interface efficaciously and reduced the diameter of EPDM particles from ~8 to ~4 μm. Silica (SiO2) was used in the matrix to improve the mechanical properties of the thermoplastic vulcanizates (TPVs). It was found that SiO2 had little influence on the compatibility between EPDM and PP; however, it improved the tensile strength and stiffness of the TPVs without a severe reduction in the elasticity. The interfacial compatibility of modified EPDM/PP TPVs was verified by Fourier transform infrared, rubber process analyzer, and scanning electron microscope. With 3 wt% of NaMAA and 12 wt% of SiO2, the tensile strength improved from 8.5 to 12.7 MPa and the elongation at break was ranged from 320% to 410%.

show abstract

Section: Introductionmentioning

confidence: 99%

Silica‐reinforced ethylene propylene diene monomer/polypropylene thermoplastic vulcanizates with interfacial compatibilized by methylacrylate

Xiong

Cui

et al. 2020

Polymer Composites

Self Cite

View full text Add to dashboard Cite

show abstract

“…The graft structure of NR and PZDMA existed between the molecular chains of NR. Nomura et al . found through transmission electron microscopy that a nanodispersed structure of PZDMA existed in a composite system of ZDMA/hydrogenated nitrile rubber (HNBR).…”

Section: Introductionmentioning

confidence: 99%

Effects of dual‐crosslinking networks on shape memory performance of polynorbornene

Gong

Yin

Zhang

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this article, Polynorbornene (PNB)/Zinc dimethacrylate (ZDMA)/Dicumyl peroxide (DCP) composites can form dualcrosslinking networks, which contain an ionic crosslinking network, and a part of the C─C covalent crosslinking network. DCP was used to initiate the polymerization of ZDMA to form ionic crosslinking bonds. With the increase of ZDMA, the total crosslink density (V r ) and ionic crosslink density (V r2 ) increased. DCP was consumed in ZDMA polymerization, which made the PNB reduce the covalent crosslinking networks. Leading to the covalent crosslink density (V r1 ) decreased. Compared with covalent crosslinking network, the dual-crosslinking networks stored more energy when deformed, provided better restoring force and a higher shape recovery ratio for materials. When ZDMA exceeded 3.9 wt%, the ZDMA aggregates hindered the movement of molecular chains leading to the shape recovery ratio slightly decreased. When ZDMA was 2.4 wt%, the composite had an optimum shape fixing and shape recovery ratio. This article provided the experimental basis for the research of PNB dual-crosslinking networks, also widened the research of PNB shape memory materials.

show abstract

“…6,7 The effective way to prepare TPVs is through dynamical vulcanization, [8][9][10] which is the process of cross-linking an elastomer during its melt mixing with a molten plastic under dynamic condition. 11,12 A significant number of TPVs are produced through this method, such as polylactide (PLA)/natural rubber (NR), 13,14 PLA/epoxidized natural rubber (ENR), [15][16][17] PLA/nitrile butadiene rubber (NBR), 18 poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM), 19 ethylene-propylene-diene monomer (EPDM)/polypropylene (PP), [20][21][22][23] PVDF/ENR, 24 polyamide 12 (PA12)/hydrogenated acrylonitrile butadiene rubber (HNBR), 25 and ethylene octene copolymer (EOC)/poly dimethyl siloxane (PDMS) rubber. 26 The properties of TPVs strongly depended on the final morphology, which were affected by many factors, such as the cross-linking degree of the rubber phase, composition, viscosity and elasticity of individual components, preparation method, and processing condition.…”

Section: Introductionmentioning

confidence: 99%

“…The effective way to prepare TPVs is through dynamical vulcanization, which is the process of cross‐linking an elastomer during its melt mixing with a molten plastic under dynamic condition . A significant number of TPVs are produced through this method, such as polylactide (PLA)/natural rubber (NR), PLA/epoxidized natural rubber (ENR), PLA/nitrile butadiene rubber (NBR), poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM), ethylene‐propylene‐diene monomer (EPDM)/polypropylene (PP), PVDF/ENR, polyamide 12 (PA12)/hydrogenated acrylonitrile butadiene rubber (HNBR), and ethylene octene copolymer (EOC)/poly dimethyl siloxane (PDMS) rubber …”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of novel fluorosilicone thermoplastic vulcanizate with cross‐linking–controlled core‐shell structure

Wang

Tang

Ren

et al. 2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

A new fluorosilicone thermoplastic vulcanizate (TPV) composed of poly(vinylidene fluoride) (PVDF), silicone rubber (SR), and fluororubber (FKM) was successfully prepared through dynamic vulcanization. The morphological structure of the TPVs had core‐shell elastomer particles dispersed in a continuous PVDF matrix. Furthermore, the cross‐linking of core‐shell structure was controlled by adopting different curing agent. The effect of cross‐linking–controlled core‐shell structure on the morphology, crystallization behavior, stress relaxation test, solvent‐resistant properties of the obtained TPVs were investigated. It was found that the shell cross‐link had a significant influence on the crystallinity of the PVDF phase. The core‐shell bicross‐linked TPV was found to provide the lowest rate of relaxation. An obvious stress softening phenomenon was observed in the uniaxial loading‐unloading cycles in tension. The bicross‐linked TPV had good solvent resistant properties. The tensile strength of the bicross‐linked TPV was still 12 MPa even after immersed in butyl acetate for 48 hours.

show abstract

Dynamically vulcanized PP/EPDM blends with balanced stiffness and toughness via in-situ compatibilization of MAA and excess ZnO nanoparticles: Preparation, structure and properties

Cited by 79 publications

References 50 publications

Silica‐reinforced ethylene propylene diene monomer/polypropylene thermoplastic vulcanizates with interfacial compatibilized by methylacrylate

Silica‐reinforced ethylene propylene diene monomer/polypropylene thermoplastic vulcanizates with interfacial compatibilized by methylacrylate

Effects of dual‐crosslinking networks on shape memory performance of polynorbornene

Preparation and properties of novel fluorosilicone thermoplastic vulcanizate with cross‐linking–controlled core‐shell structure

Contact Info

Product

Resources

About