Improvement of interfacial interaction, dispersion, and properties of chlorosulfonated polyethylene/sio2 nanocomposites using CSPE-g-Sio2 nanoparticles synthesized under ultrasonics

2012 ◽  
Vol 33 (6) ◽  
pp. 940-950 ◽  
Author(s):  
Xuefeng Bai ◽  
Xuelian He ◽  
Jun Zhang ◽  
Xiao Zhu ◽  
Haiyang Zhang ◽  
...  
Keyword(s):  
Sio2 Nanoparticles ◽  
Interfacial Interaction ◽  
Chlorosulfonated Polyethylene ◽  
Sio2 Nanocomposites

scholarly journals Graphene/SiO2 nanocomposites: The enhancement of photocatalytic and biomedical activity of SiO2 nanoparticles by graphene

2017 ◽  
Vol 121 (24) ◽  
pp. 244901 ◽  
Author(s):  
Aqsa Arshad ◽  
Javed Iqbal ◽  
Qaisar Mansoor ◽  
Ishaq Ahmed
Keyword(s):  
Sio2 Nanoparticles ◽  
Sio2 Nanocomposites

Surface Modification of Silica Nanoparticles for Reinforcement of Epoxidized Natural Rubber

2010 ◽  
Vol 93-94 ◽  
pp. 370-376 ◽  
Author(s):  
Methakarn Jarnthong ◽  
Zheng Peng ◽  
Charoen Nakason ◽  
Natinee Lopattananon
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Natural Rubber ◽  
Silica Nanoparticles ◽  
Sio2 Nanoparticles ◽  
Interfacial Interaction ◽  
Epoxidized Natural Rubber ◽  
Reinforcing Effect ◽  
Previously Treated

Epoxidized natural rubber (ENR) based nanocomposites were prepared by mixing ENR latex (epoxide content of 35 mole%) with silica nanoparticles (SiO2). SiO2 were previously treated with 3-aminopropyltriethoxysilane (APS) and 3-methacryloxypropyltrimethoxysilane (MPS). Morphological and mechanical properties of ENR/SiO2 composites were investigated. The dispersion of SiO2 in ENR matrix, which was characterized by SEM, indicated that the treated SiO2 exhibited better dispersion than that of the untreated SiO2. Moreover, it has been found that the modified SiO2 with either APS or MPS gave much significant reinforcing effect than the untreated one. However, the treatment of SiO2 nanoparticles with MPS resulted in better interfacial interaction when the APS treatment was compared.

The Dynamical Property and Abrasion Performance of Polyester Polyurethane/SiO2 Nanocomposite

2013 ◽  
Vol 668 ◽  
pp. 327-330
Author(s):  
Hao Shi ◽  
Yu Hua Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Dynamical Property ◽  
Sio2 Nanoparticles ◽  
Nano Sio2 ◽  
Sio2 Nanocomposites ◽  
Scanning Electron

Polyester based polyurethane/ SiO2 nanocomposites having the starting nNCO/nOH=2:1 and different concentrations of SiO2 nanoparticles (0, 0.2, 0.5, 1.0 and 2.0 wt %) have been prepared. The morphology, dynamical property and abrasion performance were analyzed using scanning electron microscopy, DMA and DIN abrasion tester separately. The results showed SiO2 uniformally dispersed in the composite. By adding nano SiO2 into the elastomers, the 300% modulus, tensile strength, die C tear of the composite were increased but the elongation and rebound decreased. With the increase of the SiO2 adding amount, tanδ of the composite increased gradually, the abrasion performance increased first and the declined.

Study Of Some Mechanical Properties For Epoxy/ SiO2 Nano Particles Reinforced With 6 Layers Of CM E-Glass Fibers Composites

2016 ◽  
pp. 3399-3407
Author(s):  
Ahmed Jadah Farhan ◽  
Ruaa Hilal
Keyword(s):  
Impact Strength ◽  
Volume Fraction ◽  
Glass Fibers ◽  
Sio2 Nanoparticles ◽  
Nano Particles ◽  
Molding Method ◽  
Nanoparticles Volume Fraction ◽  
Sio2 Nanocomposites ◽  
The Impact ◽  
Random Behaviour

In this study, the neat epoxy and nanocomposites with volume fraction (1, 3, 5, 7 and10%) of nano SiO2 particles reinforced with six layers of chopped mat E-glass fibers (CM) specimens were prepared by molding method. The results of Impact strengths of EP/SiO2 nanocomposites reinforced with 6 layers of CM E-glass fibers showed that Impact strength has a random behaviour with increasing volume fraction of SiO2 nanoparticles. The results showed an increase of Impact strengths with increasing the SiO2  nanoparticles volume fraction at 1% vol. of SiO2 nanoparticles, then decreases with increasing volume fraction at 3% vol. of SiO2 nanoparticles, then the Impact strength increases with increasing volume fraction of SiO2 nanoparticles until the Impact strength reach to maximum values  (78.93KJ/m2) at 7% vol. of SiO2 nanoparticles. And then Impact strength decreases with increasing volume fraction at 10% vol. of SiO2 nanoparticles.Also the results of shore D hardness of EP/SiO2 nanocomposites  reinforced with 6 layers of CM E-glass fibers showed that Hardness No. an increase with increasing the SiO2  nanoparticles volume fraction at 1% vol. of SiO2 nanoparticles, then decreases with increasing volume fraction at 3% vol. of SiO2 nanoparticles, then the Hardness No. increases with increasing volume fraction of SiO2 nanoparticles until the Hardness No. reach to maximum values  (85.03) at 10% vol. of SiO2 nanoparticles. 

Synthesis and Mechanical Properties of Advanced Polyimide/Silicon Dioxide Nanocomposites

2007 ◽  
Vol 561-565 ◽  
pp. 709-712 ◽  
Author(s):  
Qing Xin Zhang ◽  
Kimiyoshi Naito ◽  
Yutaka Kagawa
Keyword(s):  
Silicon Dioxide ◽  
Coupling Agent ◽  
Sol Gel ◽  
Sio2 Nanoparticles ◽  
X Ray Diffraction ◽  
Interatomic Distances ◽  
X Ray ◽  
Sol Gel Process ◽  
Ft Ir ◽  
Sio2 Nanocomposites

Hybrid inorganic-organic materials based on a polyimide (PI) and silicon dioxide (SiO2) were prepared previously only via sol-gel approach. However, sol-gel processes have some critical limitations. The primary drawback is that the resultant gel is extremely fragile and sol-gel process is complicated and costly. In this study, using SiO2 nanoparticles polyimide/SiO2 nanocomposites were synthesized from 4,4'-diaminodiphenyl ether (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA). A coupling agent, 3-glycidyloxyporpl trimethoxysilane (GTMOS), was used to functionalize the SiO2 nanoparticles which enhanced the compatibility between polyimide and SiO2 nanoparticles. The microstructures of polyimide/SiO2 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR) and wide angle X-ray diffraction (WAXD). All the polyimides show typical noncrystalline X-ray diffraction. The frequent occurrence of particular interatomic distances (R) denoted by the noncrystalline WAXD maxima were determined. All the modulus, strength and fracture strain of polyimide were improved with 5 wt% SiO2 modified with the coupling agent.

Piezoelectric β-polymorph formation of new textiles by surface modification with coating process based on interfacial interaction on the conformational variation of poly (vinylidene fluoride) (PVDF) chains

2020 ◽  
Vol 91 (3) ◽  
pp. 31301
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Meriem Boutaldat ◽  
Marwane Rouway ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Research Work ◽  
Research Area ◽  
Interfacial Interaction ◽  
Tetraethyl Orthosilicate ◽  
Poly Vinylidene Fluoride ◽  
Carbon Nanofillers ◽  
The Impact ◽  
Advanced Applications

Novel textiles have received a lot of attention from researchers in the last decade due to some of their unique features. The introduction of intelligent materials into textile structures offers an opportunity to develop multifunctional textiles, such as sensing, reacting, conducting electricity and performing energy conversion operations. In this research work nanocomposite-based highly piezoelectric and electroactive β-phase new textile has been developed using the pad-dry-cure method. The deposition of poly (vinylidene fluoride) (PVDF) − carbon nanofillers (CNF) − tetraethyl orthosilicate (TEOS), Si(OCH2CH3)4 was acquired on a treated textile substrate using coating technique followed by evaporation to transform the passive (non-functional) textile into a dynamic textile with an enhanced piezoelectric β-phase. The aim of the study is the investigation of the impact the coating of textile via piezoelectric nanocomposites based PVDF-CNF (by optimizing piezoelectric crystalline phase). The chemical composition of CT/PVDF-CNC-TEOS textile was detected by qualitative elemental analysis (SEM/EDX). The added of 0.5% of CNF during the process provides material textiles with a piezoelectric β-phase of up to 50% has been measured by FTIR experiments. These results indicated that CNF has high efficiency in transforming the phase α introduced in the unloaded PVDF, to the β-phase in the case of nanocomposites. Consequently, this fabricated new textile exhibits glorious piezoelectric β-phase even with relatively low coating content of PVDF-CNF-TEOS. The study demonstrates that the pad-dry-cure method can potentially be used for the development of piezoelectric nanocomposite-coated wearable new textiles for sensors and energy harvesting applications. We believe that our study may inspire the research area for future advanced applications.

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