• 한국염색가공학회지
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• 제34권2호
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• pp.109-116
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• 2022

Tire codes are made of materials such as hemp, cotton, rayon, nylon, steel, polyester, glass, and aramid are fiber reinforcement materials that go inside rubber to increase durability, driveability, and stability of vehicle tires. The reinforcement of the tire cord may construct a composite material using tires such as automobiles, trucks, aircraft, bicycles, and fibrous materials such as electric belts and hoses as reinforcement materials. Therefore, it is essential to ensure that the adhesive force between the rubber and the reinforced fiber exhibits the desired physical properties in the rubber composite material made of a rubber matrix with reinforced fibers. This study is a study on the heat treatment conditions for improving the adhesion strength of the tire cord and the reinforced fiber for tires. The core technology of the drying process is a uniform drying technology, which has a great influence on the quality of the reinforcement. Therefore, the uniform airflow distribution is determined by the geometry and operating conditions of the dryer. Therefore, this study carried out a numerical analysis of the shape of a drying nozzle for improving the performance of hot air drying in a dryer used for drying the coated reinforced fibers. In addition, the flow characteristics were examined through numerical analysis of the study on the change in the shape of the chamber affecting drying.

• Carbon letters
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• 제18권
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• pp.1-10
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• 2016

Carbon blacks (CBs) have been widely used as reinforcing materials in advanced rubber composites. The mechanical properties of CB-reinforced rubber composites are mostly controlled by the extent of interfacial adhesion between the CBs and the rubber. Surface treatments are generally performed on CBs to introduce chemical functional groups on its surface. In this study, we review the effects of various surface treatment methods for CBs. In addition, the preparation and properties of CB-reinforced rubber composites are discussed.

• Bulletin of the Korean Chemical Society
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• 제29권11호
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• pp.2264-2266
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• 2008

• Interaction and multiscale mechanics
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• 제4권3호
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• pp.239-245
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• 2011

The dynamic mechanical behavior of silicone rubber reinforced with multi-walled carbon nanotubes (MWCNTs) has been investigated in this study. The MWCNT-reinforced nanocomposites are tested in compression mode through dynamic mechanical analysis (DMA). Multiple effects including MWCNT loading, testing frequency, dynamic strain amplitude, and pre-strain level are taken into consideration. Results show that, by adding 5 wt% of MWCNTs, the dynamic stiffness and damping coefficient of the silicone rubber are significantly enhanced. It is further observed that the dynamic mechanical properties of the nanocomposites are sensitive to dynamic strain amplitude but only slightly affected by pre-strains.

• Elastomers and Composites
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• 제37권2호
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• pp.115-123
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• 2002

고압애자용 실리콘 고무를 제조하기 위해 사용되는 polydimethylsiloxane(PDMS)의 vinyl기 함량과 실리카의 종류가 전기특성 및 물성에 미치는 영향을 연구하였다. 실리콘 폴리머의 비닐함량이 증가함에 따라 가교밀도와 경도가 높아졌으며 이로 인해 인장강도, 체적저항 및 트래킹 특성이 증가하였다. 건식실리카로 보강된 실리콘 고무가 습식실리카로 보강된 실리콘 고무보다 전기적 특성 및 물성이 우수하였으며 이는 실리카에 존재하는 수분의 함량에 영향을 받는 것을 알 수 있었다.

• 대한기계학회논문집A
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• 제25권6호
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• pp.1023-1030
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• 2001

The tensile properties of short nylon6 fiber reinforced NR and SBR have been investigated as functions of diameter ratio(DR), interphase condition, fiber aspect ratio(AR), and fiber content. The short-fiber(DR=3 and AR=2) reinforced SBR did not show the dilution effect for all interphase conditions. And the short-fiber(DR=3 and AR=2) reinforced NR did not show the dilution effect except for the no-coating. The better interphase condition, the lower dilution effect at same DR. The tensile moduli are significantly improved due to fiber content and diameter ratio at same interphase condition. The pull-out force increased with the DR. The better interphase condition, the higher pull-out force at same DR. It is found that the DR and AR have an important effect on tensile properties.

• 한국지반공학회논문집
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• 제28권9호
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• pp.47-55
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• 2012

본 연구에서는 폐어망 보강형식에 따른 폐타이어-저회 혼합토의 전단특성을 고찰하였다. 실험에 사용된 혼합토는 폐타이어(분말입경 2mm~10mm)와 저회를 동일한 무게비로 구성하였으며, 준비된 혼합토에 폐어망 보강 시 층수와 겹수를 달리하여 보강함으로써 5종류의 시편(무보강 혼합토, 1층 혹은 2층 보강 혼합토, 2겹 1층 혹은 2층 보강 혼합토)이 만들어졌다. 직접전단시험을 수행한 결과 폐어망 보강 혼합토의 역학적 특성은 폐어망 보강 층수와 보강 겹수에 크게 의존하는 것을 알 수 있다. 폐어망 보강 층수와 보강 겹수가 증가함에 따라 혼합토의 전단강도와 내부마찰각은 증가한다. 이것은 보강된 폐어망과 혼합토 입자간의 마찰 및 억물림 효과에 기인하는 것으로 판단된다.

• 한국해양공학회지
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• 제14권4호
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• pp.49-55
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• 2000

This study has been investigated to apply fiber reinforced composites instead of asbestos as a friction material. the reinforced used was E-glass fiber and binder resin was phenol having good mechanical properties and heat resistance. And it has been also investigated the effect of molding conditions and some additives such and carbon black, alumina and rubber powder in E-glass fiber/phenol resin composite on the friction on the friction and wear characteristics. As a result, it was found that the molding conditions of E-glass fiber/phenol resin composites for friction materials had to be different from those of phenol resin and was found that the wear rate of E-glass fiber/phenol resin composites added alumina powder was higher than of composites added carbon black in the same wear distance. And it was found that friction coefficient of E-glass/phenol resin composites added carbon black was decreased and that of the composites added the powder of natural rubber and ABS rubber were increased compared to the composites.

• 한국농공학회논문집
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• 제53권5호
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• pp.17-23
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• 2011

Steel clapping plate is used to connecting rubber body in rubber dam. However, once the steel clapping plate corrodes, it may cause faults, such as the same problems experienced by typical reinforcing steel. This study evaluated the applicability of glass fiber reinforced polymer composite(GFRP) clapping plate as a substitute for steel clapping plate. Absorption and load test were conducted to evaluate the decrease in durability of GFRP clapping plate exposed to deterioration environments. In the durability test results, the absorption rate of GFRP clapping plate was appeared as 0.6~1.0% in 50 day of immersion time. Also, the fracture load decreased with accelerated degradation environment exposure. Moreover, the absorption rate in GFRP clapping plate increased as degradation progressed, reducing the fracture load.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 추계학술대회논문집A
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• pp.402-406
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• 2000

Strain energy function of the isoprene rubber was accurately determined by the experiments of uniaxial tension, planar tension, biaxial tension and volumetric compression. Deformation behavior of alternatively laminated structure of elastomer and reinforced aluminium layers, was analysed by Finite Element method. As a result, Ogden strain energy function obtained from the experiments describes the hyperelastic characteristics of the rubber very well. The compressibility of the rubber reduces axial stiffness of the structure. The axial stiffness of alternatively laminated structure being larger than shear stiffness. Which enables the structure to be shear-deformed easily.