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681.

Preparation and characterization of carbon fiber-reinforced thermosetting composites: a review

Fan-Long Jin, Soo-Jin Park 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 1 67-77 (11 pages)

Fan-Long Jin, Soo-Jin Park 저
...
- 4,000원
Carbon fibers (CFs) have a unique combination of properties which allow them to be widely used as reinforcing materials in advanced polymer composites. The mechanical properties of CF-reinforced polymer composites are governed mainly by the quality of interfacial adhesion between the CFs and the polymer matrix. Surface treatments of CFs are generally carried out to introduce chemical functional groups on the fiber surfaces, which provide the ability to control the surface characteristics of CFs....
682.

Effect of surface treatment of graphene nanoplatelets for improvement of thermal and electrical properties of epoxy composites

Minjae Kim, Yeongseon Kim, Sung Hyeon Baeck and Sang Eun Shim 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.1 5 34-40 (7 pages)

Minjae Kim, Yeongseon Kim, Sung Hyeon Baeck and Sang Eun Shim 저
...
- 3,000원
In this study, in order to improve the thermal and electrical properties of epoxy/graphene nanoplatelets (GNPs), surface modifications of GNPs are conducted using silane coupling agents. Three silane coupling agents, i.e. 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane (ETMOS), 3-glycidoxypropyltriethoxysilane (GPTS), and 3-glycidoxypropyltrimethoxysilane (GPTMS), were used. Among theses, GPTMS exhibits the best modification performance for fabricating GNP-incorporated epoxy composites. The effect...
683.

Influence of hot-pressing pressure on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon composite

Thakur Sudesh Kumar Raunija and Sharad Chandra Sharma 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.1 4 25-33 (9 pages)

Thakur Sudesh Kumar Raunija and Sharad Chandra Sharma 저
...
- 3,000원
the physical and mechanical properties of the resulting composite. The ‘hybrid carbon-fiberreinforced mesophase-pitch-derived carbon-matrix’ composite was fabricated by hot pressing. During hot pressing, pressure was varied from 5 to 20 MPa, and reinforcement wt% from 30 to 70. Densification of all the compacts was carried at low impregnation pressure with phenolic resin. The effect of the impregnation cycles was determined using measurements of microstructure and density. The results showed...
684.

An overview of new oxidation methods for polyacrylonitrile?based carbon fibers

Hye Kyoung Shin, Mira Park, Hak-Yong Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.1 2 11-18 (8 pages)

Hye Kyoung Shin, Mira Park, Hak-Yong Kim and Soo-Jin Park 저
...
- 3,000원
The process of oxidizing polyacrylonitrile (PAN)-based carbon fibers converts them into an infusible and non-flammable state prior to carbonization. This represents one of the most important stages in determining the mechanical properties of the final carbon fibers, but the most commonly used methods, such as thermal treatment (200°C to 300°C), tend to waste a great deal of process time, money, and energy. There is therefore a need to develop more advanced oxidation methods for PAN precursor...
685.

Effects of comonomer with carboxylic group on stabilization of high molecular weight polyacrylonitrile nanofibrous copolymers

Danyun Lei, Kesavan Devarayan1, Xiang-Dan Li, Woong-Ki Choi, Min-Kang Seo and Byoung-Suhk Kim 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 9 290-294 (5 pages)

Danyun Lei, Kesavan Devarayan1, Xiang-Dan Li, Woong-Ki Choi, Min-Kang Seo and Byoung-Suhk Kim 저
...
- 1,500원
New precursors, poly(acrylonitrile-co-crotonic acid) (poly(AN-CA)) and poly(acrylonitrile-co-itaconic acid-co-crotonic acid) (poly(AN-IA-CA)) copolymers, for the preparation of carbon fibers, were explored in this study. The effects of comonomers with acidic groups, such as crotonic acid (CA) and/or itaconic acid (IA), on the stabilization of nanofibrous polyacrylonitrile (PAN) copolymers were studied. The extent of stabilization, evaluated by Fourier transform infrared spectroscopy, revealed...
686.

Thermal properties in strong hydrogen bonding systems composed of poly(vinyl alcohol), polyethyleneimine, and graphene oxide

Sua Choi, Duck Kun Hwang and Heon Sang Lee 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 8 282-289 (8 pages)

Sua Choi, Duck Kun Hwang and Heon Sang Lee 저
...
- 3,000원
Blends of poly(vinyl alcohol) (PVA), polyethyleneimine (PEI), and graphene oxide (GO) were prepared by solution casting method. Calorimetric thermal properties of the blends were investigated. The Tgs of PVA/PEI blends were higher than the Tgs of either of the component polymers at low concentrations of PEI. These abnormal increases of Tgs may be due to the negative entropy of mixing which is associated with strong hydrogen bonding between PVA and PEI. The degree of depression of s was not...
687.

Properties of multi-walled carbon nanotube reinforced epoxy composites fabricated by using sonication and shear mixing

Min Ye Koo, Hon Chung Shin, Won-Seok Kim and Gyo Woo Lee 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 4 255-261 (7 pages)

Min Ye Koo, Hon Chung Shin, Won-Seok Kim and Gyo Woo Lee 저
...
- 3,000원
thermal, and electrical properties of the fabricated specimens were measured and evaluated. From the images and the results of the measurements of tensile strengths, the specimens having 0.6 wt% nanotube content showed better dispersion and higher strength than those of the other specimens. The Young’s moduli of the specimens increased as the nanotube filler content was increased in the matrix. As the concentrations of nanotubes filler were increased in the composite specimens, their storage a...
688.

Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal

Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 2 238-246 (9 pages)

Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 저
...
- 3,000원
People have been concerned about mercury emissions for decades because of the extreme toxicity, persistence, and bioaccumulation of methyl Hg transformed from emitted Hg. This paper presents an overview of research related to mercury control technology and identifies areas requiring additional research and development. It critically reviews measured mercury emissions progress in the development of promising control technologies. This review provides useful information to scientists and engineers...
689.

Carbon-allotropes: synthesis methods, applications and future perspectives

P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)

P. S. Karthik, A. L. Himaja and Surya Prakash Singh 저
...
- 4,800원
The element carbon has been used as a source of energy for the past few hundred years, and now in this era of technology, carbon has played a significant and very prominent role in almost all fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of...
690.

Fabrication of isotropic bulk graphite using artificial graphite scrap

Sang-Min Lee, Dong-Su Kang, Woo-Seok Kim, Jea-Seung Roh 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.2 12 142-145 (4 pages)

Sang-Min Lee, Dong-Su Kang, Woo-Seok Kim, Jea-Seung Roh 저
...
- 1,500원
Isotropic synthetic graphite scrap and phenolic resin were mixed, and the mixed powder was formed at 300 MPa to produce a green body. New bulk graphite was produced by carbonizing the green body at 700°C, and the bulk graphite thus produced was impregnated with resin and re-carbonized at 700°C. The bulk density of the bulk graphite was 1.29 g/cm3, and the porosity of the open pores was 29.8%. After one impregnation, the density increased to 1.44 g/cm3 while the porosity decreased to 25.2%....

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