Research on a Neotype of Silica Sphere Filler

2013 ◽  
Vol 663 ◽  
pp. 308-311
Author(s):  
Wen Juan Gu ◽  
Zheng Yong Cheng ◽  
Ying Li ◽  
Hou Bin Li
Keyword(s):  
Molecular Structure ◽  
Thermal Properties ◽  
Thermogravimetric Analysis ◽  
Mechanical Strength ◽  
Silicone Rubber ◽  
Sol Gel ◽  
Silica Sphere ◽  
Silica Microspheres ◽  
Gel Method ◽  
Strengthen Mechanism

A neotype of silica microspheres were synthesized with chloropropyltrimethoxysilane (WD30) and tetraethoxysilane (TEOS) by sol-gel method. And the thermal properties of the filler both in nitrogen and in air condition were studied by means of thermogravimetric analysis. The morphology of the filler was measured by TEM. The so synthesized spheres were added into the silicone rubber whose mechanical strength was increased greatly. The molecular structure of the filler and the silicone rubber were characterized by FTIR. The possible strengthen mechanism of the filler was discussed. The neotype silica sphere researched in this paper could react with the PDMS chains which perfects the vulcanization of the silicone rubber. This kind of silica sphere exhibits many merits for usage as filler.

Research on a Neotype of Silica Sphere Filler

2012 ◽  
Vol 534 ◽  
pp. 42-45
Author(s):  
Wen Juan Gu ◽  
Bang Gui He ◽  
Hou Bin Li
Keyword(s):  
Molecular Structure ◽  
Thermogravimetric Analysis ◽  
Thermal Property ◽  
Bulk Density ◽  
Sol Gel ◽  
Silica Sphere ◽  
Silica Microspheres ◽  
Gel Method ◽  
Sol Gel Method

A neotype of silica microspheres were synthesized with dodecyltrimethoxysilane (WD10) and tetraethoxysilane (TEOS) by sol-gel method. The molecular structure was characterized by FTIR. The morphology of the filler was measured by TEM. And the properties of the filler such as thermal property and bulk density were studied by means of thermogravimetric analysis and densimeter. The effect of the schemes was dicussed. This kind of silica sphere exhibits many merits for usage as filler.

Research on the Strengthen of Silicone Rubber

2013 ◽  
Vol 663 ◽  
pp. 377-380 ◽  
Author(s):  
Wen Juan Gu ◽  
Ying Li ◽  
Bang Gui He
Keyword(s):  
Mechanical Property ◽  
Contact Angle ◽  
Water Contact Angle ◽  
Silicone Rubber ◽  
Sol Gel ◽  
Water Contact ◽  
Gel Method ◽  
Sol Gel Method ◽  
Strain Stress ◽  
Strengthen Mechanism

A new kind of microsphere filler was synthesized with octyltrimethoxysilane (WD13) and tetraethoxysilane (TEOS) by sol-gel method. The morphology of the filler was measured by TEM. The so synthesized spheres were added into the silicone rubber. Both the strain-stress and the water contact angle of the silicone rubber were researched. The results showed that both the mechanical property and the hydrophobic performance of the composite were improved compared with the blank specimen. The possible strengthen mechanism of the filler was discussed. The neotype silica sphere researched in this paper could react with the silicone rubber chains which perfects the vulcanization of the silicone rubber. This kind of sphere filler exhibits many merits for usage as filler.

A New Kind of Silica Microspheres Used as Filler for PDMS Composite

2012 ◽  
Vol 534 ◽  
pp. 184-187
Author(s):  
Wen Juan Gu ◽  
Bang Gui He ◽  
Yang Li
Keyword(s):  
Mechanical Properties ◽  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Tensile Testing ◽  
Sol Gel ◽  
Hybrid Membrane ◽  
Experimental Results ◽  
Silica Microspheres ◽  
Thermal Stabilities ◽  
Gel Method

A new kind of silica microspheres were first synthesized with dodecyltrimethoxysilane (WD10) and tetraethoxysilane (TEOS) by sol-gel method. And hybrid membrane was prepared by incorporating the as prepared filler into polydimethylsiloxane (PDMS). Thermal degradation and mechanical properties of these composites membranes were studied by means of thermogravimetric analysis and tensile testing. The experimental results showed that both mechanical properties and thermal stabilities of these composites were significantly improved by using the as-synthesized filler.

scholarly journals Thermal properties and water repellency of cotton fabric prepared through sol-gel method

2016 ◽  
Vol 20 (3) ◽  
pp. 863-866 ◽  
Author(s):  
Jia-Li Gu ◽  
Qiang-Hua Zhang ◽  
Yun-Bo Chen ◽  
Guo-Qiang Chen ◽  
Tie-Ling Xing
Keyword(s):  
Thermal Properties ◽  
Cotton Fabric ◽  
Sol Gel ◽  
Water Repellency ◽  
Gravimetric Analysis ◽  
Limiting Oxygen Index ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Hydrosol ◽  
Phosphorus Doped

Cotton fabrics were treated by one-step sol-gel method. The pure silica hydrosol and phosphorus-doped hydrosol were prepared with the addition of a hydrophobic hexadecyltrimethoxysilane to decrease the surface energy of cotton fabric. The thermal properties and water repellency of treated cotton fabric were characterized by thermo-gravimetric analysis, micro combustion, limiting oxygen index, and contact angle measurement. The results showed that cotton fabric treated by phosphorus-doped silica hydrosol had excellent flame retardance, and the water repellence was apparently improved with the addition of hexadecyltrimethoxysilane.

Investigation of the structural and thermal properties of Y, Ag and Ce-assisted SiO2–Na2O–CaO–P2O5-based glasses derived by sol–gel method

2016 ◽  
Vol 128 (2) ◽  
pp. 765-770 ◽  
Author(s):  
Omer Kaygili ◽  
Serhat Keser ◽  
Cengiz Tatar ◽  
Suleyman Koytepe ◽  
Tankut Ates
Keyword(s):  
Thermal Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals Preparation and Characterization of CuFe2O4 Nanoparticles by the Sol-Gel Method and Investigation of Its Microwave Absorption Properties at Ku-Band Frequency Using Silicone Rubber

Proceedings ◽  
2018 ◽  
Vol 2 (17) ◽  
pp. 1155 ◽  
Author(s):  
Reza Peymanfar ◽  
Farzaneh Azadi ◽  
Yousef Yassi
Keyword(s):  
Microwave Absorption ◽  
Silicone Rubber ◽  
Electromagnetic Waves ◽  
Sol Gel ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Band Frequency ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ku Band

Recently, using microwave devices that emit electromagnetic waves and enhance the convenience of life have increased; however, they can be harmful to the environment. In this study, CuFe2O4 nanoparticles were prepared through the conventional sol-gel procedure and then were characterized by X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), and vector network analyzer (VNA) using S parameters. Results illustrated that pure crystal structure of magnetic nanoparticles has been synthesized by the sol-gel method with magnetic saturation (Ms) of 22 emu/g. Finally, CuFe2O4 nanoparticles were composited by silicone rubber to investigate its microwave absorption properties. Results showed that the CuFe2O4/silicone rubber nanocomposite absorbed more than 94.87% of the microwave irradiation at ku-band frequency with 1.7 mm thickness and the maximum reflection loss was −60.38 dB at 16.1 GHz. Magnetic and dielectric properties of the CuFe2O4 nanoparticles and silicone rubber polymeric matrix in the nanocomposite demonstrated desirable microwave absorption properties.

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