Thermal property improvement of ethylene‐octene copolymer through the combined introduction of filler and silane crosslink

Kamphunthong, Walailuck; Sirisinha, Kalyanee

doi:10.1002/app.31017

Cited by 15 publications

(7 citation statements)

References 41 publications

(25 reference statements)

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“…As a result of the high reaction activity, the nanoparticle has been proven to be a reinforcing agent for the structural strength and widely employed in the drug carrier and detergent. There have been some papers to describe different effects of nanoparticles on polymer solution, such as rheology enhancement or thermal property improvement. − However, the role of nanoparticles in modification of the hydrogel performance has almost never been reported in the literature. Furthermore, there is nearly no information on how the dispersed nanosilica interacted with PAM of high molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Nanosilica-Reinforcing Polyacrylamide/Polyethylenimine Hydrogel for Water Shutoff Treatment

Chen

Wang

et al. 2018

Energy Fuels

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Polyacrylamide hydrogel used in conformance control is subjected to poor stability at an elevated temperature. In this paper, nanosilica has been found to be a very effective stabilizing agent for the polyacrylamide/polyethylenimine hydrogel, and the reinforcing performance of nanosilica on the hydrogel was investigated in detail. The result showed that the strength of hydrogel is enhanced obviously by the nanosilica, and the hydrogel syneresis is also significantly inhibited by the nanosilica, which can increase the hydrogel stability time from 18 to 180 days at 130 °C. Besides, nanosilica can increase the shear viscosity and hydrodynamic radius of polyacrylamide, and the bound water in the hydrogel is also grown in the presence of nanosilica. In comparison to the micromorphology of common hydrogel, the dense and strong mesh structure is formed as a result of the reinforcing behavior of nanosilica. According to the above results, it is inferred that the silanol group of nanosilica cross-links with the amidogen of polyacrylamide via the hydrogen bond, which is considered as the primary cause of the reinforcing performance of nanosilica for the hydrogel. In addition, as a result of the improving strength and stability and increasing absorption of the polymer to rock surface, the hydrogel enhanced by nanosilica has a higher water shutoff ratio and residual resistance factor and a longer period of validity.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Nanosilica-Reinforcing Polyacrylamide/Polyethylenimine Hydrogel for Water Shutoff Treatment

Chen

Wang

et al. 2018

Energy Fuels

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“…The reason may be that the nanometer particles in reasonable amounts can increase the thermal stability of the coating [19,26], what the reason is may be that the inhibition of molecular mobility of polymer chains [27] and good thermal stability of these fillers [28], while the increased crosslinking density between the resin and nano-ZrO2 by silane may be one of the factors [28].…”

Section: Effect Of Nano-zro2 On the Thermal Propertymentioning

confidence: 99%

Effect of silane and zirconia on the thermal property of cathodic electrophoretic coating on AZ31 magnesium alloy

Zhu

Zhang

Chang

et al. 2013

Journal of Magnesium and Alloys

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Magnesium alloys, the lightest structural metal, are used in the field of aeronautics and astronautics more and more, however they are still limited for the poor corrosion resistant and high temperature property. In order to satisfy the need of long time store and short time operation at elevated temperature, coating with excellent corrosion resistance and thermal resistance was prepared on the surface of Mg alloy AZ31B. The cathodic electrophoretic deposition was applied for the preparation of coating. The bonding of organic electrophoretic deposition coating with substrate was improved using silane pretreatment. Nano-ZrO 2 powder treated by silane was added into electrophoretic deposition solution. The corrosion resistance property of electrophoretic coating was evaluated using Machu test, and thermal characteristic using the thermal shock experiment and DTA respectively. The morphology of the coating was examined by SEM. It is found that both the corrosion resistant and thermal shock resistant properties can be improved by modifying the Mg specimen with APS silane, while adding nano-ZrO 2 powder treated by GPS silane to the coating has the optimal effect. And the results also show that the main reason of the coating damage after thermal shock at 400 C or 500 C is mainly for the thermal stress.

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“…Cross‐linking is an effective method to improve the properties of polymers, 1 which changes the molecular structure of polymer from a two‐dimensional linear to a three‐dimensional network by forming the chemical bonds between its single chains 2 . Based on the low cost and easy processing of conventional polyethylene, cross‐linked polyethylene (XLPE) has excellent heat resistance, mechanical properties, and chemical resistance, thus broadening the application field of polyethylene materials 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of shape memory silane cross‐linked low‐density polyethylene prepared by solid‐phase grafting process

Chen

Zhou

et al. 2022

J of Applied Polymer Sci

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Silane cross-linking is a conventional process to improve the properties of polyethylene, and the most common process is completed by two-step methods including melt grafting and hydrolytic cross-linking. In this work, silane crosslinked low-density polyethylene (SXLPE) was prepared via solid-phase grafting copolymerization for the grafting of vinyl trimethoxysilane (VTMS) onto low-density polyethylene (LDPE). The grafting efficiency and cross-linking efficiency were determined by infrared analysis and gel content measurement, and the properties of the materials were evaluated by differential scanning calorimetry (DSC), X-ray diffraction (XRD) studies, thermogravimetric analysis (TGA), mechanical performance test, and shape memory behavior characterization. As the benzoyl peroxide (BPO) content changes from 0.1 to 0.5 phr, the SXLPEs exhibit an increase of cross-linking degree determined by gel content, a slight decrease of crystallinity, an improvement of thermal stability, and enhancement of elastic modulus, and more chain entanglement. The solid-phase grafting copolymerization retains substantial crystal regions of LDPE, which makes it show good shape memory properties, reaching 95% shape fixity ratio and 87% shape recovery ratio.

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Thermal property improvement of ethylene‐octene copolymer through the combined introduction of filler and silane crosslink

Cited by 15 publications

References 41 publications

Experimental Investigation on the Nanosilica-Reinforcing Polyacrylamide/Polyethylenimine Hydrogel for Water Shutoff Treatment

Experimental Investigation on the Nanosilica-Reinforcing Polyacrylamide/Polyethylenimine Hydrogel for Water Shutoff Treatment

Effect of silane and zirconia on the thermal property of cathodic electrophoretic coating on AZ31 magnesium alloy

Characterization of shape memory silane cross‐linked low‐density polyethylene prepared by solid‐phase grafting process

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