The role of surface modified TiO2 nanoparticles on the mechanical and thermal properties of CTBN toughened epoxy nanocomposite

2016 ◽  
Vol 51 (20) ◽  
pp. 9314-9329 ◽  
Author(s):  
B. Zewde ◽  
P. Pitliya ◽  
D. Raghavan
Keyword(s):  
Thermal Properties ◽  
Tio2 Nanoparticles ◽  
Mechanical And Thermal Properties ◽  
Epoxy Nanocomposite ◽  
Toughened Epoxy ◽  
Surface Modified

scholarly journals Grafting Hyperbranched Polymers onto TiO2 Nanoparticles via Thiol-yne Click Chemistry and Its Effect on the Mechanical, Thermal and Surface Properties of Polyurethane Coating

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2817 ◽  
Author(s):  
Feng Zhan ◽  
Lei Xiong ◽  
Fang Liu ◽  
Chenying Li
Keyword(s):  
Click Chemistry ◽  
Tio2 Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Hyperbranched Polymers ◽  
Nanocomposite Coatings ◽  
Mechanical And Thermal Properties ◽  
Nanoparticle Dispersion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Modified

In this study, we proposed a novel and facile method to modify the surface of TiO2 nanoparticles and investigated the influence of the surface-modified TiO2 nanoparticles as an additive in a polyurethane (PU) coating. The hyperbranched polymers (HBP) were grafted on the surface of TiO2 nanoparticles via the thiol-yne click chemistry to reduce the aggregation of nanoparticles and increase the interaction between TiO2 and polymer matrices. The grafting of HBP on the TiO2 nanoparticles surface was investigated by means of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), nuclear magnetic resonance (NMR) and thermogravimetry analysis (TGA). The thermal and mechanical properties of nanocomposite coatings containing various amounts of TiO2 nanoparticles were measured by dynamic mechanical thermal (DMTA) and tensile strength measurement. Moreover, the surface structure and properties of the newly prepared nanocomposite coatings were examined. The experimental results demonstrate that the incorporation of the surface-modified TiO2 nanoparticles can improve the mechanical and thermal properties of nanocomposite coatings. The results also reveal that the surface modification of TiO2 with the HBP chains improves the nanoparticle dispersion, and the coating surface shows a lotus leaf-like microstructure. Thus, the functional nanocomposite coatings exhibit superhydrophobic properties, good photocatalytic depollution performance, and high stripping resistance.

scholarly journals Micro and nanocomposites of polybutadienebased polyurethane liners with mineral fillers and nanoclay: thermal and mechanical properties

2017 ◽  
Vol 15 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Pablo Ross ◽  
Germán Escobar ◽  
Guillermo Sevilla ◽  
Javier Quagliano
Keyword(s):  
Thermal Properties ◽  
Polymer Chains ◽  
Toluene Diisocyanate ◽  
Mechanical And Thermal Properties ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
Force Microscopy ◽  
Atomic Force ◽  
Mineral Fillers

AbstractMicro and nanocomposites of hydroxyl terminated polybutadiene (HTPB)-based polyurethanes (NPU) were obtained using five mineral fillers and Cloisite 20A nanoclay, respectively. Samples were prepared by the reaction of HTPB polyol and toluene diisocyanate (TDI), and the chain was further extended with glyceryl monoricinoleate to produce the final elastomeric polyurethanes. Mechanical and thermal properties were studied, showing that mineral fillers (20%w/w) significantly increased tensile strength, in particular nanoclay (at 5% w/w). When nanoclay-polymer dispersion was modified with a silane and hydantoin-bond promoter, elongation at break was significantly increased with respect to NPU with C20A. Thermal properties measured by differential scanning calorimetry (DSC) were not significantly affected in any case. The molecular structure of prepared micro and nanocomposites was confirmed by Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. Interaction of fillers with polymer chains is discussed, considering the role of silanes in compatibilization of hydrophilic mineral fillers and hydrophobic polymer. The functionalization of nanoclay with HMDS silane was confirmed using FTIR. Microstructure of NPU with C20A nanoclay was confirmed by Atomic Force Microscopy (AFM).

Morphologies and mechanical and thermal properties of highly epoxidized polysiloxane toughened epoxy resin composites

2010 ◽  
Vol 18 (9) ◽  
pp. 853-861 ◽  
Author(s):  
Weiqu Liu ◽  
Songqi Ma ◽  
Zhengfang Wang ◽  
Chaohui Hu ◽  
Chunyi Tang
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Mechanical And Thermal Properties ◽  
Resin Composites ◽  
Toughened Epoxy ◽  
Epoxy Resin Composites

Thiamine hydrochloride (vitamin B1) as modifier agent for TiO2 nanoparticles and the optical, mechanical, and thermal properties of poly(vinyl chloride) composite films

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 92596-92604 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Marzieh Adnany Sadaty
Keyword(s):  
Optical Properties ◽  
Thermal Properties ◽  
Tio2 Nanoparticles ◽  
Vinyl Chloride ◽  
Composite Films ◽  
Vitamin B1 ◽  
Thiamine Hydrochloride ◽  
Mechanical And Thermal Properties ◽  
Poly Vinyl Chloride

In the present investigation, TiO2 nanoparticles (NPs) were used for improving the thermal, mechanical and optical properties of poly(vinyl chloride) (PVC) matrix.

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