Effects of Silane Coupling Agent on the Mechanical and Thermal Properties of Silica/Polypropylene Composites

Lee, Min Chul; Kim, Yeongseon; Ryu, Hyunjun; Baeck, Sung‐Hyeon; Shim, Sang Eun

doi:10.7317/pk.2017.41.4.599

Cited by 7 publications

(5 citation statements)

References 15 publications

(16 reference statements)

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“…These are Si-O (532.40 eV) and Si-O-Si (535.00 eV) from O 1s spectrums, C-C (283.60 eV), C-Cl (287.70 eV), C-O (289.60 eV) and C-OH (290.70 eV) from C 1s spectrum, Si-O (102.40 eV) and Si-O-Si (103.43 eV) from Si 2p spectrum. [60][61][62][63] For all the fundamentals, the close agreement between the XPS and ATR-FTIR studies verify the predicted vulcanization reaction pathway in the presence of both amino and epoxy silane vulcanization.…”

Section: Structural Characterization and Reaction Mechanismsupporting

confidence: 68%

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Ünügül

Karaağaç

2021

J of Applied Polymer Sci

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Vulcanization at lower temperatures can be considered as a good alternative to reduce both investment and operation costs for cable insulation sheat and special purpose hose production lines. In this study, silane vulcanization of chlorinated polyethylene and chloroprene rubber blends at lower temperature was investigated. Rubber compounds were prepared by using internal mixer instead of an extrusion system which is widespread used for projected applications. Rheological and dynamic properties of the rubber compounds were studied. After vulcanization, physico‐mechanical, thermal, morphological and temperature scanning stress‐relaxation properties were investigated before and after thermal aging. Structural analysis was performed by using Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy so as to identify vulcanization reaction mechanism. All the compound compositions could be vulcanized at 110°C in the presence of water. Amino silane was found to be more effective than epoxy silane.

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Section: Structural Characterization and Reaction Mechanismsupporting

confidence: 68%

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Ünügül

Karaağaç

2021

J of Applied Polymer Sci

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“…This improvement led to efficient stress transfer from the matrix to the filler through the filler-matrix interface and concurrent increase in tensile strength. The result can be further substantiated using a complementary study elsewhere [44], where the MPS silane coupling agent increased the wetting and wrapping of the HAp particles in the HDPE matrix. This phenomenon has been confirmed in the SEM analysis presented later in the section.…”

Section: Tensile Propertiesmentioning

confidence: 71%

Physical and Mechanical Properties of Tilapia Scale Hydroxyapatite-Filled High-Density Polyethylene Composites

et al. 2022

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The effects of filler loading and silane coupling agent on the properties of hydroxyapatite (HAp)-filled high density polyethylene (HDPE) composites have been studied. The (HAp) powder was successfully produced from tilapia scales using the spray drying process utilized to prepare the HDPE/HAp composites. The FTIR peaks for the untreated HDPE/30HAp composite corresponded to the functional groups of HDPE (C-CH3) and –CH2 and HAp (PO4−3 and O-H). The FTIR spectrum for the silane-treated composite showed that the C=O and silanol groups were eliminated, which strongly confirms the chemical interaction between the HAp fillers and the HDPE matrix. The developed composites demonstrated enhanced mechanical performance, and in particular the treated HDPE/30HAp-S composite exhibited superior tensile strength, Young’s modulus and flexural modulus of 28.26 MPa, 1272 MPa and 796 MPa, respectively. In vitro cytotoxicity analysis showed that the developed composites were non-toxic and have great potential to be used for biomedical application.

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“…This is believed to be due to the larger molecular chain and molecular weight of MPS compared to APS, which results in a faster coating of the recycled carbon fiber. According to the TGA graph, the weight loss in the range of 100-200°C was caused by the evaporation of water present in the recycled carbon fiber, and the weight change after 300°C was due to the removal of water molecules in the -SiOH condensation reaction on the surface of the recycled carbon fiber and the thermal degradation of the silane coupling agent [24].…”

Section: Thermal Properties Of Recycled Carbon Fibersmentioning

confidence: 99%

Effect of the Chemical Properties of Silane Coupling Agents on Interfacial Bonding Strength with Thermoplastics in the Resizing of Recycled Carbon Fibers

Lee,

Kim,

Kim

et al. 2023

Preprint

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Upcycling recycled carbon fibers recovered from waste carbon composites can reduce the price of carbon fibers while improving disposal-related environmental problems. This study assessed and characterized recycled carbon fibers subjected to sizing treatment using N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (APS) chemically coordinated with polyamide 6 (PA6) and polypropylene (PP) resins. Sizing treatment with 1 wt.% APS for 10 s yielded O=C-O on the surface of the carbon fiber, and the -SiOH in the APS underwent a dehydration-condensation reaction that converted O=C-O (lactone groups) into bonds of C-O (hydroxyl groups) and C=O (carbonyl groups). The effects of C-O and C=O on the interfacial bonding force increased to a maximum, resulting in an oxygen-to-carbon ratio (O/C) of 0.26. The polar/surface energy ratio showed the highest value of 32.29% at 10 s, and the interfacial bonding force showed the maximum value of 32 MPa at 10 s, which is about 15% better than that of commercial carbon fiber (PA6-based condition). In 10-s resizing treatments with 0.5 wt.% 3-methacryloxypropyltrimethoxysilane (MPS), C-O, C=O, and O=C-O underwent a dehydration-condensation reaction with -SiOH, which broke the bonds between carbon and oxygen and introduced a methacrylate group (H2C=C(CH3)CO2H), resulting in a significant increase in C-O and C=O, with an O/C of 0.51. The polar/surface free energy ratio was about 38% at 10 s, with the interfacial bonding force increasing to 27% compared to commercial carbon fiber (PP-based conditions). The MPS exhibited a superior interfacial shear strength improvement, two times higher than that of APS, with excellent coordination with PP resin and commercial carbon fiber, although the interfacial bonding strength of the PP resin was significantly lower.

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Effects of Silane Coupling Agent on the Mechanical and Thermal Properties of Silica/Polypropylene Composites

Cited by 7 publications

References 15 publications

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Physical and Mechanical Properties of Tilapia Scale Hydroxyapatite-Filled High-Density Polyethylene Composites

Effect of the Chemical Properties of Silane Coupling Agents on Interfacial Bonding Strength with Thermoplastics in the Resizing of Recycled Carbon Fibers

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