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Effects of Fiber Surface-Treatment and Sizing on the Dynamic Mechanical and Interfacial Properties of Carbon/Nylon 6 Composites
Donghwan Cho, Suk Hyang Yun, Junkyung Kim, Soonho Lim, Min Park, 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2004, Vol.5 No.1 1 1-5 (5 pages)
fiber production. Therefore, 0% means ‘untreated’, 20% ‘one-fifth level’ of commercial ST, and 400% ‘four-fold level’ of commercial ST. The IM7 fibers were used as received without further surface-treatment and sizing. ‘As- received’ carbon fabrics were commercially surface-treated but unsized. Pellet-type nylon 6 (Grade MC100L), supplied from Kanebo Gohsen, Ltd, Japan, was used as matrix... -
Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
g/mL at 25°C. Epoxy resin DER 331, from Dow Company was chosen as the matrix mate- rial and the resin curing agent used was ethylenediamine from Sigma-Aldrich. 2.2. Surface treatment of carbon fbers Treatment of the CFs was initiated by removing the commer- cial sizing by immersing them in Methyl-ethyl-ketone, for 12 h at 80°C with mechanical agitation (CF-Raw). This process was performed in... Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5?2 μm/8?15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT... -
Effect of exfoliated graphite nanoplatelets on the fracture surface morphology and the electrical resistivity of phenylethynyl-terminated polyimide
Donghwan Cho, Hiroyuki Fukushima, Lawrence T. Drzal 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.2 10 121-125 (5 pages)
the fracture surface morphology and the electrical resistivity of phenylethynyl-terminated polyimide Donghwan Cho 1,♠, Hiroyuki Fukushima 2 and Lawrence T. Drzal 2 1Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 730-701, Korea 2Composite Materials and Structures Center, Michigan State University, East Lansing, MI 48824-1226, USA Received 19 January... -
Comparison of Anthropometric Measurements of Oriental and Caucasian Females for Sizing Systems
허갑섬, Hu. Kap-Sum 한국의류학회 한국의류학회지 7 Pages
한국의류학회 한국의류학회지 1985, Vol.9 No.3 1-7 (7 pages)
인체계측치 중에서 각각 32항목을 선출하여 비교된 것은 높이항목과 길이항목(height-related measurements; height and length), 나비항특(surface measurements; breadth and depth) , 둘레항목(measurement of circumference)이다. 32항목을 평균치의 t-test로 동양인과 서양인을 비교한 결과, 모든 항목에서 P<.001 수준에서 유의한 차를 보였다. 그 중에서 머리둘레, 목둘레, 손목둘레, 팔굼치둘레, 손바닥둘레의 항목에서는 동양인이 서양인에 비해서 큰 값을 나타냈다. 그 외에 27개 항목은 동양인이 전부 높거나, 길거나, 또는... -
Clinics : Transjugular occlusion of patent ductus arteriosus using an Amplatz canine ductal occluder in a Cocker spaniel dog
Ran Choi , Changbaig Hyun 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 5 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2010, 제 50권 제 1호 8 49-53 (5 pages)
a grade V/VI continuous heart murmur over the maximal point of left basal area was heard, lasting throughout systole and diastole. The 12-lead surface ECG presented a tall R wave (3.6 mV in lead II) indicating left ventricular enlargement and splintered QRS complex. Diagnostic imaging studies presented prominent descending aorta, left auricle, and main pulmonary artery (MPA) on the dorsoventral... -
Acute Pulmonary Responses in Vivo to Silica Complexed with H+, Zn2+, or Fe3+
JiheeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 8 183-189 (7 pages)
determine whether the surface comp1exation of iron infuence acute pu1monary responses induced by silica. For this study， three varieties of cation comp1exed silica were used: si1ica-H+’ _Zn2+， and _Fe3+， since the first two are not active in the transport of electrons and generate 1itt1e free radica1s relative to the dust with the surface iron. Rats (270 to 280 g) were intratracheally (IT)... This investigation is to determine whether the surface complexation of iron influence acute pulmonary responses induced by silica. For this study, three varieties of cation complexed silica were used: silica-H, -Zn2, and -Fe3, since the first two are not active in the transport of electrons and generate little free radicals relative to the dust with the surface iron. Rats (270 to 280 g) were intratracheally (IT) instilled with saline, silica-H, -Zn2, or...