The effect of UV-irradiation and molten medium on the mechanical and thermal properties of polystyrene-polycarbonate blends

2011 ◽  
Vol 124 (2) ◽  
pp. 1096-1105 ◽  
Author(s):  
Ali Ayoub ◽  
Valérie Massardier-Nageotte
Keyword(s):  
Thermal Properties ◽  
Uv Irradiation ◽  
Mechanical And Thermal Properties ◽  
Molten Medium

Performance of polylactide against UV irradiation: Synergism of an organic UV absorber with micron and nano-sized TiO2

2020 ◽  
Vol 54 (18) ◽  
pp. 2489-2504 ◽  
Author(s):  
Ulas Can ◽  
Cevdet Kaynak
Keyword(s):  
Weight Loss ◽  
Thermal Properties ◽  
Uv Irradiation ◽  
Chemical Structure ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Melt Mixing ◽  
Uv Absorber ◽  
Fluorescent Lamps ◽  
Twin Screw

The main purpose of this study was to investigate mechanical and thermal performance of polylactide specimens against UV irradiation; first when only adding benzotriazole benzotriazole-based organic UV absorber (UVA), micro (200 nm) and nano (50 nm) sized titania (TiO2) particles alone, and then to reveal possible synergism when they are added together. Compounds were prepared by twin-screw extruder melt mixing, while the 2 mm thick specimens were shaped by compression molding. Specimens were exposed to UV irradiation under fluorescent lamps (UVB-313) with 0.50 W/m2 for the periods of 12 and 24 days. Changes in the performance of UV irradiated specimens were evaluated in terms of % weight loss, changes in color and chemical structure, including the decreases in the mechanical and thermal properties. Various tests and analysis revealed that synergistic benefits of using micro and nano TiO2 particles together with benzotriazole-type UVA were not only due to the effective stiffening, strengthening and toughening actions of titania particles, but also due to their very significant “UV screening” actions absorbing the photons of the UV irradiation, thus decreasing the degree of the detrimental photodegradation reactions leading to chain scissions in their PLA matrix.

Mechanical and Thermal Properties of PMMA with Al2O3 Composite Films

2011 ◽  
Vol 3 (6) ◽  
pp. 455-456
Author(s):  
Anita Anita ◽  
◽  
Basavaraja Sannakki
Keyword(s):  
Thermal Properties ◽  
Composite Films ◽  
Mechanical And Thermal Properties ◽  
Al2o3 Composite

Effects of graphene nanoplatelets on the tribological, mechanical, and thermal properties of Mg-3Al alloy nanocomposites

2019 ◽  
Vol 110 (6) ◽  
pp. 534-542 ◽  
Author(s):  
Pravir Kumar ◽  
Ashis Mallick ◽  
Milli Suchita Kujur ◽  
Khin Sandar Tun ◽  
Manoj Gupta
Keyword(s):  
Thermal Properties ◽  
Graphene Nanoplatelets ◽  
Mechanical And Thermal Properties

Mechanical and thermal characterization of grafted PP-NCC nanocomposites

2019 ◽  
pp. 089270571987822
Author(s):  
Saud Aldajah ◽  
Mohammad Y Al-Haik ◽  
Waseem Siddique ◽  
Mohammad M Kabir ◽  
Yousef Haik
Keyword(s):  
Thermal Properties ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Three Point Bending ◽  
Twin Screw ◽  
Thermal Stability Of

This study reveals the enhancement of mechanical and thermal properties of maleic anhydride-grafted polypropylene (PP- g-MA) with the addition of nanocrystalline cellulose (NCC). A nanocomposite was manufactured by blending various percentages of PP, MA, and NCC nanoparticles by means of a twin-screw extruder. The influence of varying the percentages of NCC on the mechanical and thermal behavior of the nanocomposite was studied by performing three-point bending, nanoindentation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy tests. The novelty of this study stems on the NCC nanoparticles and their ability to enhance the mechanical and thermal properties of PP. Three-point bending and nanoindentation tests revealed improvement in the mechanical properties in terms of strength, modulus, and hardness of the PP- g-MA nanocomposites as the addition of NCC increased. SEM showed homogeneity between the mixtures which proved the presence of interfacial adhesion between the PP- g-MA incorporated with NCC nanoparticles that was confirmed by the FTIR results. DSC and TGA measurements showed that the thermal stability of the nanocomposites was not compromised due to the addition of the coupling agent and reinforced nanoparticles.

Ta addition effects on the structure, mechanical and thermal properties of sputtered Hf-Ta-C film

2019 ◽  
Vol 45 (12) ◽  
pp. 15596-15602 ◽  
Author(s):  
Xinlei Gu ◽  
Lina Yang ◽  
Xiaorong Ma ◽  
Xuan Dai ◽  
Jia Wang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties

Characterization of mechanical and thermal properties of high strength glass epoxy and rayon carbon phenolic composites

2018 ◽  
Vol 5 (13) ◽  
pp. 26898-26903 ◽  
Author(s):  
C. Sharada Prabhakar ◽  
P. Ramesh Babu
Keyword(s):  
Thermal Properties ◽  
High Strength ◽  
Mechanical And Thermal Properties

Mechanical and thermal properties of PEEK composites by incorporating inorganic particles modified phosphates

2021 ◽  
Vol 212 ◽  
pp. 108715
Author(s):  
Yongan Niu ◽  
Shuojin Zheng ◽  
Pingan Song ◽  
Xin Zhang ◽  
Chao Wang
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties ◽  
Inorganic Particles
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