Mechanical and ceramifiable properties of silicone rubber filled with different inorganic fillers

Wang, Jinhe; Ji, Chentao; Yan, Yuantao; Zhao, Di; Shi, Liyi

doi:10.1016/j.polymdegradstab.2015.09.003

Cited by 93 publications

(48 citation statements)

References 20 publications

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“…The crosslink structures of silicone rubber with Al 2 O 3 and ATH are illustrated in Figure . The tensile strength of formula samples A and D is similar, whereas the elongation‐at‐break of formula sample D is much lower than that of formula sample A, which is in accordance with the paper . The low elongation at break is caused by the agglomerations that act as weak points in the composite and it breaks when stress is applied .…”

Section: Resultssupporting

confidence: 85%

“…In an inert gas environment, high temperature promotes the hydrolysis of siloxane by water molecules, which reduces the thermal stability of siloxane . Consequently, temperatures at peak 2 of those added with ATH as flame retardant are lower compared with that of formula D. More moisture was introduced from PPT silica and some impurities as observed in Figure accelerates the thermal degradation process of silicone rubber, resulting in a lower temperature of peak 2 in formula B than that in formula A . In addition, with all other ingredients being the same, as the content of colorant in formula C was less than that in formula B, formula C had a higher proportion of base rubber.…”

Section: Resultsmentioning

confidence: 99%

“…The thermal conductivity, heat stability, mechanical properties, dielectric properties, and moisture absorption of the silicone rubber filled with different alumina were investigated . Effect of different ATH on the electrical, mechanical, and aging properties of silicone rubber was studied . The comparison of ATH and alumina in silicone rubber was mainly focused on the tracking and erosion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of four commonly used high temperature vulcanized silicone rubber formulas for outdoor insulator and their regional adaptability

Lin

Wang

Yin

et al. 2019

J of Applied Polymer Sci

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High temperature vulcanized silicone rubber (HTVSR) insulators are widely used in transmission lines. In this article, four formulas [fumed silica and precipitated silica as reinforcing agent, alumina trihydrate (ATH) and alumina as flame retardant, and Fe2O3 and Fe3O4 as colorant] widely used in the production of HTVSR insulators were investigated by performing a series of laboratory experiments. The surface morphologies of silicone rubber, mechanical characterization (hardness, tensile property, and tear strength), electrical properties (volume resistivity, dielectric property, and breakdown strength), hydrophobicity and its transfer property, and thermal property of these four formulas were analyzed. According to the test results, the formula composed of fumed silica, Fe2O3 colorant, and alumina trihydrate (ATH) were excellent in mechanical properties because of more secondary structures, more bound rubber, and uniform dispersion. Therefore, it can be used in strong wind and bird pecking regions. Due to the absence of crystal water, the formula composed of fumed silica, Fe2O3 colorant, and alumina was observed to be excellent in thermal stability and electrical properties, making it suitable for the regions with high temperature and humidity. The formula composed of precipitated silica, Fe3O4 colorant, and ATH was found to be excellent in hydrophobicity transfer characteristics because of more raw rubber and satisfactory performance could be expected when it was applied in polluted regions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47477.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of four commonly used high temperature vulcanized silicone rubber formulas for outdoor insulator and their regional adaptability

Lin

Wang

Yin

et al. 2019

J of Applied Polymer Sci

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“…However, high flame retardancy of the composites is also beneficial from the point of view of ceramification process, which seems to be much more effective when the composites are not exposed to rapid temperature growth. High flame retardancy of composites suppresses growth of fire and temperature, facilitating favorable-mild conditions for ceramification [15]. The addition of CbMix or Al(OH) 3 facilitates the highest increase of the flame retardancy of a ceramifiable silicone composite ( Fig.…”

Section: Flammability and Smoke Intensitymentioning

confidence: 99%

“…Mansouri et al [9][10][11] and Hanu et al [12][13][14] also conducted outstanding research concerning ceramifying silicone composites. Wang J. et al developed a glassy frit facilitating ceramification of remarkably low softening point temperature of 400°C [15]. Whereas Xiong et al proposed a solid-state sintering mechanism as an explanation of highly loaded silicone composites ceramification [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of mineral filler additives on flammability, processing and use of silicone-based ceramifiable composites

et al. 2017

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The aim of this work is to describe the changes in the properties of ceramifiable silicone rubber-based composites caused by the incorporation of novel alternative minerals in comparison to other popular, widely utilized fillers. TiO 2 , calcined kaolin and calcium-based minerals mix (CbMix) consisting of CaO (6.26 wt%), CaCO 3 (26.18 wt%) and Ca(OH) 2 (67.56 wt%) have not been considered as a dispersed phase of ceramifiable silicone composites destined for wire covers yet. Mineral fillers: TiO 2 (anatase), mica (phlogopite), CbMix, CaCO 3 , Al(OH) 3 , kaolin and calcined kaolin affect the processing and the various properties of silicone rubber-based composites destined for wire covers differently. The propertiesflammability, smoke intensity, micromorphology and mechanical durability after ceramification-are assessed by measuring: the kinetics of vulcanization, stress at different levels of elongation, tensile strength and the elongation at break of the materials. Although the curing process of the composites is disturbed by the addition of CbMix, it benefits from an increase in oxygen index value, which reaches 31.4%. What is more, also its flammability parameters measured by cone calorimetry improve, such as the total heat released (THR) reaching 9.3 MJ/m 2 . Samples containing kaolin and calcined kaolin exhibit the best mechanical properties before ceramification, whereas composites filled with calcium-based powders (CbMix, CaCO 3 ) mechanically display the strongest mineral char after heat treatment, possibly due to a more homogenous micromorphology and the creation of calcium silicates at elevated temperature. Significant amounts of wollastonite, parawollastonite and pseudowollastonite are visible in their structure after ceramification.

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Bioelastomers Based on Cocoa Shell Waste with Antioxidant Ability

Tran

Heredia‐Guerrero

Binh

et al. 2017

Advanced Sustainable Systems

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In this study, a new strategy for the utilization of cocoa shell waste, a by‐product of cocoa industry, is presented for the development of new bioelastomers. The cocoa shell waste (CSW) is first micronized and then incorporated into single component acetoxy‐poly(dimethylsiloxane) (acetoxy‐PDMS) macromolecular matrix by a mixing process to produce bioelastomer composites with tunable properties. A detailed study is carried out to investigate the influence of micronized cocoa waste concentration on the curing process and on the properties of final materials. It is found that addition of CSWs has a strong effect on the curing behavior of PDMS due to establishment of an intermolecular hydrogen bond network between the two components. CSW bioelastomers are hydrophobic and exhibit good water barrier properties. In addition, the bioelastomers show effective antioxidant scavenging activity against 2,2‐diphenyl‐1‐picrylhydrazyl free radical (DPPH•) and 2,2′‐azinobis(3‐ethylbenzothiazoline‐6‐sulfonic acid) radical cation (ABTS•+). The incorporation of micronized CSW into PDMS is also found to significantly enhance the Young's modulus of the elastomers. Hence, these antioxidant bioelastomers originating from food industry waste can be highly suitable as materials for active food packaging applications.

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Mechanical and ceramifiable properties of silicone rubber filled with different inorganic fillers

Cited by 93 publications

References 20 publications

Comparison of four commonly used high temperature vulcanized silicone rubber formulas for outdoor insulator and their regional adaptability

Comparison of four commonly used high temperature vulcanized silicone rubber formulas for outdoor insulator and their regional adaptability

Effect of mineral filler additives on flammability, processing and use of silicone-based ceramifiable composites

Bioelastomers Based on Cocoa Shell Waste with Antioxidant Ability

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