• Title/Summary/Keyword: Polymeric material

Search Result 426, Processing Time 0.037 seconds

Performance Test and Design of Distribution FRP Pole (배전용 FRP 전주 설계 및 성능시험)

  • 한동희;조한구;박기호;송일근;이웅선
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2001.07a
    • /
    • pp.295-298
    • /
    • 2001
  • This paper presents mechanical properties and weatherability of FRP pole used for a distribution line about high strength and good insulation properties. The experiment strength obtained in cantilever beam test are comparable to ES standards. The environmental factors, such as elevated temperatures, high humidity, and corrosive fluids, and ultraviolet(UV) rays, influence on the performance of Polymeric matrix composite.

  • PDF

Development of Polymer Crossarms (폴리머 절연완철 개발)

  • 조호령;이철호;조영신;김상욱
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2001.07a
    • /
    • pp.307-310
    • /
    • 2001
  • This paper reports the developing and manufacturing process of polymeric crossarms in place of conventional crossarms made of steel used for overhead lines. The use of insulated crossarms has been mandatory in order to achieve the required line compaction in the pole. The developed polymer crossarm is characterised by significantly less weight, easier handling, much longer insulation length which leading to reduce the flashover outage from bird nest.

  • PDF

Preparation and characterization of Poly (ethylene terephthalate) (PET) (가지 달린 poly (ethylene terephthalate) (PET)의 제조와 물성에 관한 연구)

  • Kim, Soochan;Park, Sungshin;Sooyun Jung;Kim, Jungsoo;Seungsoon Im
    • Proceedings of the Korean Fiber Society Conference
    • /
    • 2003.10b
    • /
    • pp.203-204
    • /
    • 2003
  • Generally, polymeric foam has many advantages, such as light-weight, good impact absorptivity and adiabatic properties. Poly (ethylene terephthalate) PET has good recyclability and no toxicity. Hence, if we make foam of PET, it could be used for various applications such as heat insulating material, recyclable packing material, and food vessel. Thus these properties are attractive interests to manufacturers. (omitted)

  • PDF

SYNTHESIS, CHARACTERIZATION AND APPLICATION OF WATER-SOLUBLE AND WATER-SWELLING POLYMERS BASED ON VINYL ETHERS

  • Kudaibergenov, Sarkyt-E
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 1998.06a
    • /
    • pp.467-470
    • /
    • 1998
  • The scientiic and technological aspects of water-soluble and water-swelling polymers to be synthesized from the domestic raw materials of Kazakhstan are described. The application area of polymeric reagents in medicine, biotechnology, agriculture, enhanced oil recovery, ecology is also considered.

  • PDF

Development of Lithium Conductive Polymer Electrolyte for Smart Windows (스마트 윈도우용 리들 전도성 전해질 개발)

  • 박태성;백희원;진교원;김영호;조봉희
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 1997.11a
    • /
    • pp.262-265
    • /
    • 1997
  • Various polymeric electrolytes were prepared from PEG, PEO and PMMA with LiClO$_4$ to develop lithium conductive electrolytes for smart windows. The complementary electrochromic devices were fabricated with these electrolytes involving cathodically coloring WO$_3$ and anodically coloring V$_2$O$\sub$5/ thin films. The performance of electrochromic device with PMMA/LiCLO$_4$ electrolyte was found to be excellent

  • PDF

Performance Evaluation and Housing Design for Direct Current Surge Arrester in Railway Rolling Stock (직류 전차 탑재형 피뢰기의 하우징 설계 및 성능평가)

  • 조한구;김석수;한세원;이운용
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2000.07a
    • /
    • pp.128-131
    • /
    • 2000
  • The main objective of this paper is to design and test a new type of polymer ZnO surge arrester for DC power system of railroad vehicles. The rated voltage is 1500V direct current. The main research works are focused on structure design by finite element method, rating voltage, temporary over voltage and studies of characteristics of polymeric surge arrester.

  • PDF

A Composite of Metal and Polymer Films: Thin Nickel Film Coated on a Polypropylene Film after Atmospheric Plasma Induced Surface Modification

  • Song, Ho-Shik;Choi, Jin-Moon;Kim, Tae-Wan
    • Transactions on Electrical and Electronic Materials
    • /
    • v.12 no.3
    • /
    • pp.110-114
    • /
    • 2011
  • Polymeric films of high chemical stability and mechanical strength covered with a thin metallic film have been extensively used in various fields as electric and electronic materials. In this study, we have chosen polypropylene (PP) as the polymer due to its outstanding chemical resistance and good creep resistance. We coated thin nickel film on PP films by the electroless plating process. The surfaces of PP films were pre-treated and modified to increase the adhesion strength of metal layer on PP films, prior to the plating process, by an environment-friendly process with atmospheric plasma generated using dielectric barrier discharges in air. The surface morphologies of the PP films were observed before and after the surface modification process using a scanning electron microscope (SEM). The static contact angles were measured with deionized water droplets. The cross-sectional images of the PP films coated with thin metal film were taken with SEM to see the combined state between metallic and PP films. The adhesion strength of the metallic thin films on the PP films was confirmed by the thermal shock test and the cross-cutting and peel test. In conclusion, we made a composite material of metallic and polymeric films of high adhesion strength.

Large-area Uniform Deposition of Amorphous Hydrogenated Carbon Films using a Plasma CVD Method (플라즈마 CVD 법을 이용한 대면적 균일한 비정질 탄소 막 증착)

  • Yun, Sang-Min;Yang, Sung-Chae
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.22 no.5
    • /
    • pp.411-414
    • /
    • 2009
  • It has been investigated for the film uniformity and deposition rate of a-C:H films on glass substrate and polymeric materials in the presence of the modulated crossed magnetic field. We used Plasma CVD, i.e, using a crossed electromagnetic field, for uniform depositing thin film. The optimum discharge condition has been discussed for the gas pressure, the magnetic flux density and the distance between substrate and electrodes, As a result, it is found that the optimum discharge conditions are $CH_4$ concentration $CH_4$=10 %, modulated magnetic flux density B=48 Gauss, pressure P=100 mTorr, discharge power supply voltage V=l kV under these experimental conditions. By using these experimental condition, it is possible to prepare the most uniform film extends over about 160 mm of the film width. In this study, we deposited a-C:H thin film on glass substrate, and have a plan that using this condition, study depositing a-C:H thin film on polymeric substrate in next studies.

A simple quasi-3D sinusoidal shear deformation theory with stretching effect for carbon nanotube-reinforced composite beams resting on elastic foundation

  • Hadji, Lazreg;Zouatnia, Nafissa;Meziane, Mohamed Ait Amar;Kassoul, Amar
    • Earthquakes and Structures
    • /
    • v.13 no.5
    • /
    • pp.509-518
    • /
    • 2017
  • The objective of the present paper is to investigate the bending behavior with stretching effect of carbon nanotube-reinforced composite (CNTRC) beams. The beams resting on the Pasternak elastic foundation, including a shear layer and Winkler spring, are considered. The single-walled carbon nanotubes (SWCNTs) are aligned and distributed in polymeric matrix with different patterns of reinforcement. The material properties of the CNTRC beams are estimated by using the rule of mixture. The significant feature of this model is that, in addition to including the shear deformation effect and stretching effect it deals with only 4 unknowns without including a shear correction factor. The single-walled carbon nanotubes (SWCNTs) are aligned and distributed in polymeric matrix with different patterns of reinforcement. The material properties of the CNTRC beams are assessed by employing the rule of mixture. The equilibrium equations have been obtained using the principle of virtual displacements. The mathematical models provided in this paper are numerically validated by comparison with some available results. New results of bending analyses of CNTRC beams based on the present theory with stretching effect is presented and discussed in details. the effects of different parameters of the beam on the bending responses of CNTRC beam are discussed.

Developmental Trend of Polyimide Membranes for Gas Separation (Polyimide계 기체분리막의 개발 동향)

  • Oh, Dae-Youn;Nam, Sang-Yong
    • Membrane Journal
    • /
    • v.21 no.4
    • /
    • pp.307-320
    • /
    • 2011
  • Polymeric gas separation membrane is the fastest growing field in membrane separation process. Polymeric gas separation membrane process is competitive compare to cryogenic process and pressure swing adsorption process. Aromatic polymer materials such as polysulfones, polypheneylene oxides, polycarbonates and polyimides have been used for gas separation. Recently, glassy polymer likes polyimide in aromatic polymers has been developed for achievement of high selectivity and permeability coefficients. The accurate understanding on a type and structure of polymer material is very important, because the factor that polymer material affect gas separation property. In the study, trend and the development direction on synthesis and permeation properties of polyimide is confirmed.