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천진실,김환국 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
As developed the automobile industries, the complex and high performance electric equipment have been embedded into the various parts of automobile, such as the safety sensor, automatic driving module. The antistatic technique should be considered to prevent the malfunction of electric equipment in automobile. To remove the electrostatic in the automobile, the antistatic tire cord can be used as a path for the electrical flow. In this study, the PET cord yarn was coated with the various concentrations of carbon black to improve the electrical conductivity of tire. The electrical path on the surface of carbon black-coated PET cord yarn were investigated by using the SEM. The digital multi meter were used to investigate the antistatic performance of carbon black-coated PET cord yarn. The interfacial bonding properties between the PET cord yarn and the rubber matrix were investigated by the H-pull test with respect to the various concentrations of carbon black in dip-coating solution.
천진실,조형찬,권혜인 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
The surface adhesion between the carbon fiber and the polymer matrix have been issued to enhance the mechanical properties of carbon fiber-reinforced thermoplastic composite (CFRTP). The silicone coupling agent generally adopted to improve the interfacial adhesion between the reinforcing fiber and the polymer matrix. However, the epoxy-terminated silicon coupling agent is applied on the surface of commercial carbon fiber because of the carbon fiber applied with the epoxy resin. The de-sizing technique should be considered to apply the silicone coupling agent on the carbon fiber for CFRTP fabrication. In this study, the CFRTP fabricated with using the plain woven carbon fabric, and the PA6 and PP. To investigate the effect of de-sizing and the sizing materials on the mechanical properties of CFRTP, the inter-laminar shear strength, impact resistance, tensile properties were characterized to obtain the optimum combination between the polymer matrix and sizing materials.
전자빔에 의해 경화된 유리섬유/Diepoxidized Polycardanol 복합재료의 인장, 동역학 및 마모 특성
천진실,조동환,Cheon, Jinsil,Cho, Donghwan 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.3
In the present study, the effect of electron beam irradiation on the tensile, dynamic mechanical, and abrasion properties of glass-fiber-reinforced diepoxidized polycardanol (DEPC) composites was explored. Triarylsulfonium hexafluoroantimonate, an antimonate-type photoinitiator (2 wt%) was added to diepoxidized cardanol (DEC) prior to composite curing by electron beam. The glass fabrics pre-impregnated with DEPC were consolidated by direct irradiation of electron beam at 400, 500, and 600 kGy at ambient temperature and pressure. The composite properties strongly depend on the applied electron beam intensity. The result indicates that electron beam curing of glass fiber/DEPC composites at 600 kGy resulted in the highest tensile modulus, tensile strength, dynamic storage modulus, abrasion resistance, and lowest damping among the applied electron beam absorption doses.