Preparation and Properties of BR/SBR Blends Using Surface-Modified Nano Zinc Oxide

2014 ◽  
Vol 910 ◽  
pp. 101-104 ◽  
Author(s):  
Jin Yu Qi ◽  
Li Xin Wu ◽  
Dong Xian Zhuo
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Sol Gel ◽  
Tensile Modulus ◽  
Nano Zinc Oxide ◽  
Transmission Electron ◽  
Cure Time ◽  
Size And Morphology ◽  
Nano Zinc ◽  
Surface Modified

nanozinc oxide (n-ZnO) was synthesized by sol-gel method. The surface of n-ZnO was modified by a silane coupling agent. The modified n-ZnO was then used as rubber vulcanizing activator and nanofiller for BR/SBR blends. The size and morphology of n-ZnO were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The effects of modified n-ZnO on cure characteristics, mechanical properties and thermal conductivity of BR/SBR blends were tested and analyzed. The use of modified n-ZnO resulted in less optimum cure time (t90), higher mechanical properties (anti-abrasion, tear strength, tensile strength, tensile modulus) and thermal conductivity at lower content compared to the conventional micro ZnO(c-ZnO).

Effect of In Situ Surface Modificated Nano-Zinc Oxide on the Curing Structure and Property of Natural Rubber Conventional Vulcanization

2011 ◽  
Vol 236-238 ◽  
pp. 1757-1760
Author(s):  
Yue Hui Chen ◽  
Li Deng ◽  
Zhong Biao Man ◽  
Miao Yang
Keyword(s):  
Zinc Oxide ◽  
Sol Gel ◽  
Accelerated Aging ◽  
Structure And Property ◽  
Hot Air ◽  
Nano Zinc Oxide ◽  
Transmission Electron ◽  
Aging Property ◽  
Nano Zinc

In-situ surface modificated nano-zinc oxide was prepared in sol-gel method and the microscopic structure of the zinc oxide particles was analyzed by transmission electron microscopy (TEM). The influence of the nano-zinc oxide on the physical properties of NR vulcanizates was investigated, and the vulcanizates heat-resistant oxygen aging property was studied by the hot air accelerated aging method. Therefore, not only can the strength and elongation properties of vulcanizates greatly be improved, but aslo the heat oxygen aging property of vulcanizate rubber was extremely promoted.

Preparation of nano-zinc oxide/EPDM composites with both good thermal conductivity and mechanical properties

2010 ◽  
Vol 119 (2) ◽  
pp. 1144-1155 ◽  
Author(s):  
Zhenhua Wang ◽  
Yonglai Lu ◽  
Jun Liu ◽  
Zhimin Dang ◽  
Liqun Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Zinc Oxide ◽  
Nano Zinc Oxide ◽  
Nano Zinc

Preparation of poly(vinyl alcohol)/silica nanocomposties by sol-gel method

e-Polymers ◽  
2013 ◽  
Vol 13 (1) ◽  
Author(s):  
Yan-Na Zhao
Keyword(s):  
Mechanical Properties ◽  
Solid State ◽  
Silica Nanoparticles ◽  
Vinyl Alcohol ◽  
Sol Gel ◽  
Average Diameter ◽  
Poly Vinyl Alcohol ◽  
Hybrid Membranes ◽  
Transmission Electron ◽  
Size And Morphology

Abstract The poly(vinyl alcohol)/silica nano-composities hybrid membranes were prepared by co-hydrolysis and co-condensation of γ-glycidyloxypropyl trimethoxysilane (GPTMS) and tetraethoxysilane (TEOS) in poly(vinyl alcohol)(PVA) aqueous solution. The mechanical properties of hybrid membranes was studied, the result indicated that the well dispersion of nanoparticles was beneficial to the enhancement of the mechanical properties, and GPTMS could increase the miscibility of the polymer and SiO2. The membranes were characterized by scanning eletron microscopy (SEM) equipped with energy dispersive X-ray spectrometry (EDS), 29Si CP/MAS solid-state nuclear magnatic resonance (NMR). The EDS of poly(vinyl alcohol)/silica nano-composities showed that Si element had been grafted onto the chain of PVA. The 29Si CP/MAS solidstate NMR spectra, 13C CP/MAS Solid-state NMR spectrum and EDS confirmed that silica had been introduced into the chain of PVA. Latex particle size and morphology was observed by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The TEM and DLS indicated that silica nanoparticles well and regularly dispersed in PVA solution and the average diameter of silica nanoparticles dispersed in PVA solution was about 58 nm.

Effect of Calcination on the Basic Strength of Surface Modified Nano-Zinc Oxide Characterised by FTIR and Back Titration Methods

2015 ◽  
Vol 1107 ◽  
pp. 326-332
Author(s):  
Abdul Rahim Yacob ◽  
Kamaluddeen Suleiman Kabo
Keyword(s):  
Zinc Oxide ◽  
Metal Oxides ◽  
Base Catalysis ◽  
Nano Zinc Oxide ◽  
Back Titration ◽  
And Performance ◽  
Nano Zinc ◽  
Surface Modified ◽  
Heterogeneous Base ◽  
Basic Strength

The use of metal oxides in heterogeneous base catalysis has gained a large interest due to their application in many chemical and industrial processes and is environmental friendly. Basic metal oxides are commonly used and their structures, morphology and performance can be modified by method of preparation and thermal activation. In this study, surface modified amphoteric zinc oxide was prepared via hydration-dehydration method and characterised by TGA and FTIR. The basic strength at various temperatures is characterised by FTIR and back titration analyses. The results shows that surface modified zinc oxide has the highest basic strength of 1.453mmolg-1at 400°C making it a relatively good and suitable compound for use in heterogeneous basic catalysis. This result is also supported by FTIR spectra which show possible relationship between the Lewis O2-and increasing basic strength.

Preparation and characterization of surface modified boron nitride epoxy composites with enhanced thermal conductivity

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 44282-44290 ◽  
Author(s):  
Jun Hou ◽  
Guohua Li ◽  
Na Yang ◽  
Lili Qin ◽  
Maryam E. Grami ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Thermal Stability ◽  
Boron Nitride ◽  
High Thermal Conductivity ◽  
Epoxy Composites ◽  
Surface Modified ◽  
Enhanced Thermal Conductivity ◽  
Electrical Insulation Properties

The fabricated surface modified boron nitride epoxy composites exhibit high thermal conductivity, superior thermal stability and good mechanical properties while retaining good electrical insulation properties.

Surface-modified halloysite nanotubes as fillers applied in reinforcing the performance of polytetrafluoroethylene

Clay Minerals ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 643-656 ◽  
Author(s):  
Zhi-Lin Cheng ◽  
Xing-Yu Chang ◽  
Zan Liu ◽  
Dun-Zhong Qin
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Sodium Dodecyl ◽  
Halloysite Nanotubes ◽  
Angle Measurements ◽  
Transmission Electron ◽  
Contact Angle Measurements ◽  
Ftir Spectrometry ◽  
Surface Modified ◽  
Scanning Electron

ABSTRACTIn order to improve the dispersibility of halloysite nanotubes (HNTs) in polytetrafluoroethylene (PTFE), the modification of HNT surfaces was studied with three types of modifiers (polymethyl methacrylate [PMMA], sodium dodecyl sulfate [SDS] and carboxylic acid). The modified HNTs were characterized by Fourier-transform infrared (FTIR) spectrometry, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and contact angle measurements. The HNTs were used to reinforce the mechanical properties of PTFE. The mechanical results indicated that the tensile strength of the modified HNT-filled PTFE nanocomposites (F-HNT/PTFE) improved to an acceptable degree and Young's modulus increased significantly. The tribological results showed that the wear rate of F-HNT/PTFE decreased by 21–82 and 9–40 times compared to pure PTFE and the pristine F-HNT/PTFE, respectively.

scholarly journals Evaluation of Effect of Various Nanofillers on Technological Properties of NBR/NR Blend Vulcanized Using BIAT-CBS System

2013 ◽  
Vol 2013 ◽  
pp. 1-10
Author(s):  
Shaji P. Thomas ◽  
Saliney Thomas ◽  
C. V. Marykutty ◽  
E. J. Mathew
Keyword(s):  
Electron Microscopy ◽  
Tensile Properties ◽  
Morphological Analysis ◽  
Technological Properties ◽  
Compression Set ◽  
Nano Zinc Oxide ◽  
Nano Zinc ◽  
Surface Modified ◽  
Modified Carbon Nanotubes ◽  
Made In

Owing to processing ease and resistance to oils and chemicals, NBR is widely used in many industries. But since neat NBR has only poor tensile properties, it is better to use suitable blends of NR and NBR after incorporating appropriate nanoingredients before vulcanization. It is well established that nanoparticles can be easily dispersed in a more uniform pattern in polymer matrix, thereby enhancing the technological properties of the elastomer vulcanizate. Since there are no systematic comparative studies on technological properties of NBR/NR blend containing different nanoingredients, efforts have been made in this study to investigate cure and technological properties like tensile properties, tear resistance, compression set, hardness, abrasion loss and swelling value of NBR/NR (80/20) blend vulcanizates containing stearic acid-coated nano-zinc oxide (ZOS), nano-BIAT, nano-silicate-coated CaCO3, PEO-coated calcium silicate, and surface-modified carbon nanotubes (CNT). XRD and electron microscopy have been used for morphological analysis. The nano ingredients were effective in enhancing the technological properties of the vulcanizates. Among the nanofillers, modified CNT was found to impart superior properties to NBR/NR blend due to more intercalation.

Study on Nano-Particle Modified Epoxy Resin Adhesive

2011 ◽  
Vol 415-417 ◽  
pp. 35-38 ◽  
Author(s):  
Guang Qing Gai ◽  
Xiang Ting Dong ◽  
Xue Song Chen ◽  
Cheng Yan Zheng
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Nano Particles ◽  
Nano Particle ◽  
Resin Adhesive ◽  
Nano Zinc Oxide ◽  
Epoxy Resin Adhesive ◽  
Nano Zinc ◽  
Nano Titanium Dioxide ◽  
Modified Epoxy

The nano-particle modified epoxy resin adhesive was prepared by adding different types of nanoparticles to the epoxy resin adhesives.The influence of the kinds and amount of nanoparticles on the mechanical properties of epoxy resin adhesive was investigated.The investigation results indicated that the addition of three kinds of nanoparticles including nano-silica,nano-titanium dioxide,nano zinc oxide to epoxy resin adhesive has a significant influence on the mechanical properties of nano-composites.And tensile strength and breaking elongation of nano-composites reached the maximum when the amount of nanoparticle reached 4wt%.In addition,the toughening mechanisms of nano-particles modified epoxy resin adhesives was analysed.

scholarly journals Effects of TiO2/SiO2 Reinforced Nanoparticles on the Mechanical Properties of Green Hybrid Coating

2015 ◽  
Vol 47 ◽  
pp. 56-66 ◽  
Author(s):  
Mohammed Gobara
Keyword(s):  
Mechanical Properties ◽  
Sol Gel ◽  
Hardness Test ◽  
Silica Sol ◽  
X Ray Diffraction ◽  
Properties Of Coatings ◽  
X Ray ◽  
Hybrid Silica ◽  
Transmission Electron ◽  
Adhesion Performance

Titanium and silica oxides nanoparticles were introduced into hybrid silica sol–gel/epoxy coating to enhance the mechanical properties of coatings. Titanium dioxide (TiO2) and silica oxide (SiO2) were chemically synthesised before adding to the prepared silica sol gel coating. X-ray diffraction (XRD), Energy-dispersive x-ray analysis (EDX) and Transmission Electron microscope (TEM) were used to characterize the prepared nanoparticles. The coating was then applied to 3003 aluminium alloy (AA3003) surface. The adhesion performance of different sol gel coating compositions was investigated using shear test to define the influence of nanoparticles on adhesive strength of the coating. The Rockwell C hardness test was used to study the micro-hardness of different compositions of sol gel coating. Also, contact angel was used to investigate the hydrophobicity of the coatings. The results showed that there was a significant improvement of the adhesion performance of hybrid silica sol gel coating due to addition of TiO2 and the hydrophobicity of sol gel coating was increased due to addition of SiO2 nanoparticles.

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