Modification of Thermoplastics with Reactive Silanes and Siloxanes

Chruściel, Jerzy; Leśniak, E.

doi:10.5772/34694

Cited by 11 publications

(3 citation statements)

References 113 publications

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“…For the effect of admicellar polymerization, we found that the T d of the prepared adNRs closes to that of pure NR. However, the enhancement of thermal resistance is observed for the adNRs at high temperature as shown in In addition, the increasing of dielectric constant in the adNR samples is due to the presence of ceramic domain of silicon compound [4] which is a rather high dielectric constant material. Makled [5] investigated that the presence of ceramic filler in the material even at very low concentration is able to increase the dielectric constant.…”

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confidence: 92%

“…shows dielectric loss of NR, adNR, prevulcanized NR and prevulcanized adNR. The dielectric loss slightly increased when the PMPS was added into NR and it seemed to be not changed at high frequency, Fig 4a.The slight increase of loss value is probably due to the presence of the domain of silicon compound[4] acting as filler. The dielectric loss of prevulcanized adNR is significantly lower than that of adNR indicating the efficiency of NR to keep the electricity to the minimum value when the NR phase was crosslinked and the surface was modified by admicellar polymerization, Fig.4b.…”

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Dielectric Studies of Admicelled Natural Rubber with Poly(3-Trimethoxysilylpropyl Methacrylate)

Nooma

Magaraphan

2013

AMR

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In this work, 3-trimethoxysilylpropyl methacrylate (MPS) was used as a substrate for coating on natural rubber (NR) particles by admicellar polymerization. The incorporation of MPS monomer, consisting of silicon element and 3 reactive methoxy groups (R-Si(OCH3)), is expected to increase dielectric properties of NR. Under the admicellar polymerization, the R-Si(OCH3) groups can be hydrolyzed and condensed into polysiloxane existed on NR particles. This method aims to prepare composite materials from NR and MPS with various amounts of MPS. The effects of microwave frequency and chemical modification by admicellar polymerization were studied. The dielectric properties of admicelled natural rubber (adNR) with PMPS were investigated at 20 °C in a frequency range extended from MHz to GHz. The results showed that the dielectric constant of adNR increased with PMPS contents. To study the effect of crosslinking on the dielectric properties of adNR, the dielectric spectroscopy measurements were performed on prevulcanized and non-prevulcanized adNR. The investigation showed that the dielectric constant of non-prevulcanized adNR was less than prevulcanized adNR.

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Dielectric Studies of Admicelled Natural Rubber with Poly(3-Trimethoxysilylpropyl Methacrylate)

Nooma

Magaraphan

2013

AMR

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“…20-23 As an instance of silane coupling agent, a paraffin wax and a polyolefin grafted silane-based coatings were developed to meet the demand of enhancing superhydrophobicity and flexibility respectively. 24-27 Moreover polyorganosiloxane, zinc phosphate, iron phosphate and polyethylene (PE) wax grafted with their compatible coatings exhibited reduction in coefficient of friction. 28-32…”

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Anticorrosive and lubricating polyphenol coatings on galvanneal steel

Jain

Bhagawati

Khandagiri

et al. 2017

Surface Engineering

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Phosphate ion containing acidic polyphenol coating solutions were developed as to mitigate the deleterious effect of corrosion on galvannealed iron surface. The influence of manganese sulphate, manganese phosphate and polyethylene wax in polyphenol coatings were investigated to reduce the powdering of complex-shaped galvannealed structures and corrosion effect. Moreover, the reactivity of coating at the surface was evaluated by glow discharge optical emission spectroscopy, scanning electron microscopy and energy dispersive spectroscopy. Low surface integration within 3.5% NaCl environment and frictional behaviour was achieved with 0.5% manganese phosphate in polyphenol coated coupon by electrochemical and mechanical testing respectively.

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Tuning the Electromechanical Properties of Silicones by Crosslinking Agent

Bele¹,

Cazacu²,

Racleş³

et al. 2015

Adv Eng Mater

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Five R-trialkoxysilanes, with R: CH 3 , C 6 H 5 , NH 2 (CH 2 ) 3 , Cl(CH 2 ) 3 , or NC(CH 2 ) 3 are used as crosslinkers for two polydimethylsiloxane-a,v-diols with different molecular masses (35,000 and 125,000 g Á mol À1 ) The crosslinking occurs by condensation at room temperature under the influence of the environmental moisture and in presence of dibutyltindilaurate as a catalyst. After aging, the films are characterized by mechanical testing, dielectric spectroscopy, and thermal analysis. Moisture sorption capacity is evaluated by dynamic vapour sorption analysis, while the morphology of the crosslinked films is observed by scanning electron microscopy in cryo-fracture. The mechanical response to an applied electric field is measured. The results are discussed in correlation with polymeric chain length and the nature of R from crosslinking agent emphasizing in principle an increasing of the dielectric permittivity and actuation with the polarity of the organic group but a worsening of these with increasing length of the polymer chain matrix.

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Modification of Thermoplastics with Reactive Silanes and Siloxanes

Cited by 11 publications

References 113 publications

Dielectric Studies of Admicelled Natural Rubber with Poly(3-Trimethoxysilylpropyl Methacrylate)

Dielectric Studies of Admicelled Natural Rubber with Poly(3-Trimethoxysilylpropyl Methacrylate)

Anticorrosive and lubricating polyphenol coatings on galvanneal steel

Tuning the Electromechanical Properties of Silicones by Crosslinking Agent

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