Damping behaviour of dynamically cured butyl rubber/polypropylene blends

Liao, Fu-Sen; Su, An‐Chung; Hsu, Tzu-Chien

doi:10.1016/0032-3861(94)90382-4

Cited by 58 publications

(39 citation statements)

References 16 publications

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“…Liao [82] found that polypropylene (PP) suppressed the tand of IIR. Because IIR and PP have different thermal expansion ratios, the molecules of PP restrict the molecular motions of IIR.…”

Section: Diluted and Blended Systemsmentioning

confidence: 99%

A review of the slow relaxation processes in the glass–rubber transition region of amorphous polymers

Zhang

Huang

2015

Phase Transitions

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This article is a review that introduces several articles about slow relaxation processes, also known as slower segmental dynamics. According to the literature, the coupling effect and free volume holes are two important elements for slower micro-dynamics. In addition, the slower processes of many-body systems (blend and diluted systems) are summarised. A good numerical method for detecting multiple modes in the glassÀrubber transition region is introduced.

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“…Liao [82] found that polypropylene (PP) suppressed the tand of IIR. Because IIR and PP have different thermal expansion ratios, the molecules of PP restrict the molecular motions of IIR.…”

Section: Diluted and Blended Systemsmentioning

confidence: 99%

A review of the slow relaxation processes in the glass–rubber transition region of amorphous polymers

Zhang

Huang

2015

Phase Transitions

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“…[45][46][47] This process, which is known as dynamic vulcanization, leads to a stable morphology, which has a uniform and fine distribution of the dispersed phase.…”

Section: Effect Of Dynamic Vulcanizationmentioning

confidence: 99%

Melt rheology and morphology of LLDPE/EVA blends: Effect of blend ratio, compatibilization, and dynamic crosslinking

Moly

Oommen

Bhagawan

et al. 2002

J of Applied Polymer Sci

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ABSTRACT:The melt rheological properties of linear low-density polyethylene (LLDPE)/ethylene vinyl acetate (EVA) blends were investigated with special reference to the effect of blend ratio, temperature, shear rate, compatibilization, and dynamic vulcanization. The melt viscosity of the blends determined with a capillary rheometer is found to decrease with an increase of shear rate, which is an indication of pseudoplastic behavior. The viscosity of the blend was found to be a nonadditive function of the viscosities of the component polymers. A negative deviation was observed because of the interlayer slip between the polar EVA and the nonpolar LLDPE phases. The melt viscosity of these blends decreases with the increased concentration of EVA. The morphology of the extrudate of the blends at different shear rates and blend ratios was studied and the size and distribution of the domains were examined by scanning electron microscopy. The morphology was found to depend on shear rate and blend ratio. Compatibilization of the blends with phenolic-and maleic-modified LLDPE increased the melt viscosity at lower wt % of compatibilizer and then leveled off. Dynamic vulcanization is found to increase the melt viscosity at a lower concentration of DCP. The effect of temperature on melt viscosity of the blends was also studied. Finally, attempts were made to correlate the experimental data on melt viscosity and cocontinuity region with different theoretical models.

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“…29,30 Dynamic vulcanization leads to a uniform distribution of rubber particles in the thermoplastic matrix. The morphology is also stabilized.…”

Section: Effect Of Dynamic Vulcanizationmentioning

confidence: 99%

Dielectric properties of isotactic polypropylene/nitrile rubber blends: Effects of blend ratio, filler addition, and dynamic vulcanization

George

Varughese

Thomas

1999

J. Appl. Polym. Sci.

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ABSTRACT:The dielectric properties of isotactic polypropylene/acrylonitrile-butadiene rubber blends have been investigated as a function of frequency with special reference to the effect of blend ratio. The dielectric properties measured were volume resistivity, dielectric constant (⑀Ј), dissipation factor (tan ␦), and loss factor (⑀Љ). At high frequencies, a transition in relaxation behavior was observed whereby the dielectric constant of the blends decreased with frequency, whereas the loss tangent and loss factor increased on reaching a maximum. The variation of the dielectric properties with blend composition was correlated with blend morphology, and relationships were established with reference to blend composition. Experimental ⑀Ј values were compared with theoretical predictions. The effect of the addition of fillers on the dielectric properties was also investigated for different fillers and filler loadings. It was found that silica filler increases the dissipation factor, whereas carbon black and cork gave a reverse trend. The variation in dielectric properties upon dynamic vulcanization of the rubber phase using different vulcanizing agents (such as sulfur, peroxide, and mixed systems) was also investigated.

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Damping behaviour of dynamically cured butyl rubber/polypropylene blends

Cited by 58 publications

References 16 publications

A review of the slow relaxation processes in the glass–rubber transition region of amorphous polymers

A review of the slow relaxation processes in the glass–rubber transition region of amorphous polymers

Melt rheology and morphology of LLDPE/EVA blends: Effect of blend ratio, compatibilization, and dynamic crosslinking

Dielectric properties of isotactic polypropylene/nitrile rubber blends: Effects of blend ratio, filler addition, and dynamic vulcanization

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