The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform

Han Wang - One of the best experts on this subject based on the ideXlab platform.

  • preparation of highly conductive graphene coated Glass Fibers by sol gel and dip coating method
    Journal of Materials Science & Technology, 2019
    Co-Authors: Minghe Fang, Xuhai Xiong, Yabin Hao, Tengxin Zhang, Han Wang
    Abstract:

    Abstract In order to fabricate highly-conductive Glass Fibers using graphene as multi-functional coatings, we reported the preparation of graphene-coated Glass Fibers with high electrical conductivity through sol-gel and dip-coating technique in a simple way. Graphene oxide (GO) was partially reduced to graphene hydrosol, and then Glass Fibers were dipped and coated with the reduced GO (rGO). After repeated sol-gel and dip-coating treatment, the Glass Fibers were fully covered with rGO coatings, and consequently exhibited increased hydrophobicity and high electrical conductivity. The graphene-coated Fibers exhibited good electrical conductivity of 24.9 S/cm, being higher than that of other nanocarbon-coated Fibers and commercial carbon Fibers, which is mainly attributed to the high intrinsic electrical conductivity of rGO and full coverage of fiber surfaces. The wettability and electrical conductivity of the coated Fibers strongly depended on the dip-coating times and coating thickness, which is closely associated with coverage degree and compact structure of the graphene coatings. By virtue of high conductivity and easy operation, the graphene-coated Glass Fibers have great potential to be used as flexible conductive wires, highly-sensitive sensors, and multi-functional Fibers in many fields.

Yushan Xing - One of the best experts on this subject based on the ideXlab platform.

  • A novel approach to recycling of Glass Fibers from nonmetal materials of waste printed circuit boards
    Journal of Hazardous Materials, 2009
    Co-Authors: Yanhong Zheng, Chujiang Cai, Shulin Ma, Xiaohu Zhao, Zhigang Shen, Yushan Xing
    Abstract:

    The printed circuit boards (PCBs) contain nearly 70% nonmetal materials, which usually are abandoned as an industrial solid-waste byproduct during the recycling of waste PCBs. However those materials have abundant high-value Glass Fibers. In this study, a novel fluidized bed process technology for recycling Glass Fibers from nonmetal materials of waste PCBs is studied. The recycled Glass Fibers (RGF) are analyzed by determination of their purity, morphology and surface chemical composition. This process technology is shown to be effective and robust in treating with nonmetal materials of waste PCBs. The thermoset resins in the nonmetal materials are decomposed in the temperature range from 400 °C to 600 °C. And the Glass Fibers are collected at high purity and recovery rate by the cyclone separators without violating the environmental regulation. This novel fluidized bed technology for recycling high-value Glass Fibers from nonmetal materials of waste PCBs represents a promising way for recycling resources and resolving the environmental pollutions during recycling of waste PCBs. © 2009 Elsevier B.V. All rights reserved.

Jeff Vanek - One of the best experts on this subject based on the ideXlab platform.

  • Plasma surface treatment and modification of Glass Fibers
    Composites Part A-applied Science and Manufacturing, 2002
    Co-Authors: Vladimir Cech, R Balkova, A Grycova, Radovan Prikryl, Jeff Vanek
    Abstract:

    New helical coupling plasma system for continuous surface treatment and modification (surface processing) of fiber bundles has been developed and tested for Glass Fibers. The system enables surface processing of single filaments and flat substrates as well. Surface processed Glass Fibers and their bundles were examined as reinforcements for Glass fiber/polyester composite systems. Processing of Fibers comprised a surface treatment using argon gas and a surface modification using hexamethyldisiloxane and vinyltriethoxysilane monomers. Interfacial and interlaminar shear strengths of plasma processed Glass fiber/polyester systems were compared with those of untreated and commercially sized Fibers.

Takahito Kanie - One of the best experts on this subject based on the ideXlab platform.

  • Relaxation modulus of denture base resin reinforced with woven Glass Fibers.
    Dental Materials Journal, 2002
    Co-Authors: Takahito Kanie, Hiroyuki Arikawa, Koichi Fujii
    Abstract:

    This study examined the reinforcing effect of woven Glass Fibers on the relaxation modulus by three-point loading of denture base resin. Three sandwich-type flexure test specimens polymerized by heating were used, all 3 mm thick: Glass Fibers in compression (U type); Glass Fibers in the center (C type); and Glass Fibers in tension (L type). Unreinforced specimens (ACR) were produced as a control. The relaxation modulus after 8 sec from the start of stress (Er(8)) was calculated from stress relaxation curves. In the Glassy state, the Er(8)s of the U and L types were greater than those of the ACR and C types. In the rubbery state (plateau region), the Er(8)s of the U and L types were greater than those of the ACR and C types. The woven Glass Fibers added to the U and L type specimens increased the relaxation modulus of PMMA near the oral temperature; moreover, they inhibited stress relaxation when the temperature increased.

  • flexural properties and impact strength of denture base polymer reinforced with woven Glass Fibers
    Dental Materials, 2000
    Co-Authors: Takahito Kanie, Hiroyuki Arikawa, Koichi Fujii, Katsuichiro Inoue
    Abstract:

    Abstract Objectives: The present investigation was undertaken to determine the reinforcing effect of woven Glass Fibers on deflection, flexural strength, flexural modulus and impact strength of acrylic denture base polymer. Methods: Three silanized or unsilanized woven Glass Fibers were used. Specimens were made by heating the denture cure resin dough containing Glass Fibers, which were sheathed in the dough. Specimens with four different thicknesses and of five different types were made, incorporating the Glass fiber. Three-point flexural test and flywheel type impact test were employed to determine the flexural properties and impact strength. Results: When specimens contained unsilanized Glass fiber, the flexural strength in specimens of 1 and 2 mm thickness and the impact strength in specimens of 2 mm thickness were higher than those of specimens without Glass fiber ( p On the contrary, the flexural strength and deflection in specimens reinforced with silanized Glass fiber of 1 mm thickness were significantly higher ( p p ( p than that of unreinforced specimens. Statistically significant differences were found in the flexural strength ( p and in the impact strength ( p when specimens of 4 mm thickness were reinforced with two or three unsilanized Glass Fibers. Significance: The reinforcement with Glass fiber was effective in thin specimens, and the reinforcing effect increased with the increase of the number of Glass Fibers in the case of thick specimens.

Yanhong Zheng - One of the best experts on this subject based on the ideXlab platform.

  • A Comparative Study on Recycled Glass Fibers and Milled Glass Fibers as Reinforcement Fibers in Polypropylene
    Advanced Materials Research, 2014
    Co-Authors: Huai Min Miao, Yanhong Zheng, Yu Hua Qiao, Yong Biao Xu, Wei Jiang, Fei Xiong Zhang, Zhigang Shen
    Abstract:

    Fibers reinforced polymers have received considerable attention from industry in recent years. Due to the sharp resources recovery, and the global demand for fiber materials, there has been growing interest in the use of the recycled Glass Fibers (RGF) as an alternative. This work focuses on comparing the RGF from nonmetals of waste printed circuit boards (PCBs) and virgin milled Glass Fibers (MGF) as reinforcement Fibers in polypropylene (PP). The results show that toughness, strength, and rigidity of the composites can be improved simultaneously by the addition the RGF into PP. Meanwhile, the effect of the RGF on PP matrix is slightly higher than that of the MGF. The morphology, evaluated by scanning electron microscopy (SEM), indicates uniform dispersion of both types of the Fibers in the PP matrix. Based on comprehensive consideration of the mechanical properties, thermal properties, economy and environment, the RGF could replace traditional MGF for producing PP plastic products and can bring a good economic benefit to enterprises. This would develop a new technique for meeting the demand of the Glass fiber materials and resolving the environmental pollution.

  • The Reinforcing Mechanism of Recycled Glass Fibers and Milled Glass Fibers in Polypropylene Composites
    Advanced Materials Research, 2014
    Co-Authors: Yu Hua Qiao, Yanhong Zheng, Huai Min Miao, Yong Biao Xu, Wei Jiang, Zhigang Shen
    Abstract:

    A great amount of work has been done over the past few years to use the Glass Fibers reinforcing polypropylene (PP) composites. Due to the sharp resources recovery, and the global demand for fiber materials, there has been growing interest in the use of the recycled Glass Fibers (GF) (RGF) as an alternative. This work focuses on the reinforcing mechanisms of the Glass Fibers in PP composites. The reinforcing mechanism is evaluated by scanning electron microscopy (SEM) on the basis of the energy dissipation theory. The GF are the excellent supporting bodies. Interfacial debonding, fiber pullout and breakage dissipate tremendous energy. These factors cause improvements in the strength of the RGF/PP and MGF/PP composites.

  • A novel approach to recycling of Glass Fibers from nonmetal materials of waste printed circuit boards
    Journal of Hazardous Materials, 2009
    Co-Authors: Yanhong Zheng, Chujiang Cai, Shulin Ma, Xiaohu Zhao, Zhigang Shen, Yushan Xing
    Abstract:

    The printed circuit boards (PCBs) contain nearly 70% nonmetal materials, which usually are abandoned as an industrial solid-waste byproduct during the recycling of waste PCBs. However those materials have abundant high-value Glass Fibers. In this study, a novel fluidized bed process technology for recycling Glass Fibers from nonmetal materials of waste PCBs is studied. The recycled Glass Fibers (RGF) are analyzed by determination of their purity, morphology and surface chemical composition. This process technology is shown to be effective and robust in treating with nonmetal materials of waste PCBs. The thermoset resins in the nonmetal materials are decomposed in the temperature range from 400 °C to 600 °C. And the Glass Fibers are collected at high purity and recovery rate by the cyclone separators without violating the environmental regulation. This novel fluidized bed technology for recycling high-value Glass Fibers from nonmetal materials of waste PCBs represents a promising way for recycling resources and resolving the environmental pollutions during recycling of waste PCBs. © 2009 Elsevier B.V. All rights reserved.