The Experts below are selected from a list of 588 Experts worldwide ranked by ideXlab platform
Ning Zhao - One of the best experts on this subject based on the ideXlab platform.
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Multifunctional polymethylsilsesquioxane (PMSQ) surfaces prepared by electrospinning at the sol-gel transition: superhydrophobicity, excellent solvent resistance, thermal stability and enhanced Sound Absorption Property.
Journal of Colloid and Interface Science, 2011Co-Authors: Haifan Xiang, Yuhua Long, Xiaoli Zhang, Zhen Wang, Liang Zhang, Ning ZhaoAbstract:Multifunctional superhydrophobic polymethylsilsesquioxane (PMSQ) surfaces with excellent solvent resistance, thermal stability and enhanced Sound Absorption Property were manufactured by electrospinning. The surfaces with various hierarchical morphologies and hydrophobicity were obtained by electrospinning at the different stages of sol-gel transition of PMSQ prepolymer solution. At the stage with a proper viscosity the superhydrophobic PMSQ surface with a contact angle as high as 151° and a sliding angle as low as 8° was prepared. Due to the excellent thermal stability and solvent resistance properties of the cured PMSQ, the resultant surfaces remain superhydrophobicity after thermal treatment at 300 °C and immersion into many solvents. Additionally, an enhanced acoustical performance and ultra water repellency were obtained simultaneously when the traditional acoustical sponge was decorated with the electrospun PMSQ superhydrophobic surface. The robust superhydrophobic PMSQ surfaces may promise practical applications in many fields.
Jie Ren - One of the best experts on this subject based on the ideXlab platform.
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study on Sound Absorption Property of ramie fiber reinforced poly l lactic acid composites morphology and properties
Composites Part A-applied Science and Manufacturing, 2010Co-Authors: Dakai Chen, Jie RenAbstract:Abstract The effect of ramie fiber, flame retardant and plasticizer on Sound Absorption Property of ramie fiber reinforced PLLA composites was investigated. We used press molding process to prepare the ramie fiber/PLLA composites, with short ramie fiber and ramie plain weave fabric as the reinforcement. The dispersivity of flame retardant ammonium polyphosphate (APP) was indirectly tested by thermogravimetric analysis (TGA). The result of Sound Absorption Property measurement shows that the composites with short ramie fiber have better Sound Absorption Property than the ramie fabric reinforced PLLA composites. And the addition of APP and plasticizer poly(butylene adipate-co-terephthalate) (PBAT) improves the Sound Absorption Property of ramie fabric/PLLA composites. Moreover, morphological studies by scanning electron microscopy (SEM) demonstrate the micro-phase separation in the PBAT/PLLA composites and the porosity of the single ramie fiber bundle. The results suggest that these special structures are the main reason for the better Sound Absorption Property.
Xiong Yan - One of the best experts on this subject based on the ideXlab platform.
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Sound Absorption Properties Of Single-Hole Hollow Polyester Fiber Reinforced Hydrogenated Carboxyl Nitrile Rubber Composites
Sciendo, 2017Co-Authors: Jie Hong, Sheng Jiang, Xiong YanAbstract:A series of single-hole hollow polyester fiber (SHHPF) reinforced hydrogenated carboxyl nitrile rubber (HXNBR) composites were fabricated. In this study, the Sound Absorption Property of the HXNBR/SHHPF composite was tested in an impedance tube, the composite morphology was characterized by scanning electron microscope (SEM), and the tensile mechanical Property was measured by strength tester. The results demonstrated that a remarkable change in Sound Absorption can be observed by increasing the SHHPF content from 0% to 40%. In the composite with 40% SHHPF in 1 mm thickness, the Sound Absorption coefficient reached 0.671 at 2,500 Hz; the effective bandwidth was 1,800-2,500 Hz for Sound Absorption coefficient larger than 0.2. But the Sound Absorption Property of the composite deteriorated when the SHHPF content increased to 50% in 1 mm thickness. While with 20% SHHPF proportion, the Sound Absorption Property was improved by increasing the thickness of composites from 1 to 5 mm. Compared with the pure HXNBR of the same thickness, the tensile mechanical Property of the composite improved significantly by increasing the SHHPF proportion. As a lightweight composite with excellent Sound Absorption Property, the HXNBR/SHHPF composite has potential practical application value in the fields of engineering
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seven hole hollow polyester fibers as reinforcement in Sound Absorption chlorinated polyethylene composites
Applied Acoustics, 2012Co-Authors: Sheng Jiang, Huiping Zhang, Chris White, Xiong YanAbstract:Abstract A series of thin, lightweight and low-cost Sound Absorption composites consisting of chlorinated polyethylene (CPE) and seven-hole hollow polyester fibers (SHPF) were fabricated. The Sound Absorption Property of the fiber composites was tested in an impedance tube, the morphology was characterized by a scanning electron micrographs (SEM) and the mechanical Property of fiber composites was measured by strength tester. The effect of fiber content, composite thickness, and cavity depth on the Sound Absorption Property, and the effect of fiber content on mechanical Property and micro-structure were investigated. The results demonstrated that acoustical characteristics of porous materials were exhibited by mixing with SHPF. Acoustical Absorption of materials increased significantly with increasing SHPF content. Furthermore, the acoustic Property of composite with 20% SHPF concentration and 3 mm thickness was noted in the low frequency range, giving a Sound Absorption coefficient peak, 0.695 at 2500 Hz. Composite with air back cavity had resonance characteristics of a lamella with an Absorption peak only occurring at a specific frequency. Compared with pure CPE of similar thickness, mechanically CPE/SHPF composite at the 1 mm thickness and 20% SHPF exhibited 228% higher tensile stress and 96% lower breaking strain. It appears from these results that CPE/SHPF composites have potential for engineering applications especially as Sound absorbers.
Haifan Xiang - One of the best experts on this subject based on the ideXlab platform.
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Multifunctional polymethylsilsesquioxane (PMSQ) surfaces prepared by electrospinning at the sol-gel transition: superhydrophobicity, excellent solvent resistance, thermal stability and enhanced Sound Absorption Property.
Journal of Colloid and Interface Science, 2011Co-Authors: Haifan Xiang, Yuhua Long, Xiaoli Zhang, Zhen Wang, Liang Zhang, Ning ZhaoAbstract:Multifunctional superhydrophobic polymethylsilsesquioxane (PMSQ) surfaces with excellent solvent resistance, thermal stability and enhanced Sound Absorption Property were manufactured by electrospinning. The surfaces with various hierarchical morphologies and hydrophobicity were obtained by electrospinning at the different stages of sol-gel transition of PMSQ prepolymer solution. At the stage with a proper viscosity the superhydrophobic PMSQ surface with a contact angle as high as 151° and a sliding angle as low as 8° was prepared. Due to the excellent thermal stability and solvent resistance properties of the cured PMSQ, the resultant surfaces remain superhydrophobicity after thermal treatment at 300 °C and immersion into many solvents. Additionally, an enhanced acoustical performance and ultra water repellency were obtained simultaneously when the traditional acoustical sponge was decorated with the electrospun PMSQ superhydrophobic surface. The robust superhydrophobic PMSQ surfaces may promise practical applications in many fields.
Dakai Chen - One of the best experts on this subject based on the ideXlab platform.
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study on Sound Absorption Property of ramie fiber reinforced poly l lactic acid composites morphology and properties
Composites Part A-applied Science and Manufacturing, 2010Co-Authors: Dakai Chen, Jie RenAbstract:Abstract The effect of ramie fiber, flame retardant and plasticizer on Sound Absorption Property of ramie fiber reinforced PLLA composites was investigated. We used press molding process to prepare the ramie fiber/PLLA composites, with short ramie fiber and ramie plain weave fabric as the reinforcement. The dispersivity of flame retardant ammonium polyphosphate (APP) was indirectly tested by thermogravimetric analysis (TGA). The result of Sound Absorption Property measurement shows that the composites with short ramie fiber have better Sound Absorption Property than the ramie fabric reinforced PLLA composites. And the addition of APP and plasticizer poly(butylene adipate-co-terephthalate) (PBAT) improves the Sound Absorption Property of ramie fabric/PLLA composites. Moreover, morphological studies by scanning electron microscopy (SEM) demonstrate the micro-phase separation in the PBAT/PLLA composites and the porosity of the single ramie fiber bundle. The results suggest that these special structures are the main reason for the better Sound Absorption Property.