• 한국인쇄학회지
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• 제29권3호
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• pp.41-53
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• 2011

For manufacturing the tape for repairing archival documents, we tested ten carrier candidates for selecting best material. The tensile strength, transmissivity, stability of deterioration, and processability were determined. Physical-chemical characteristics and stability of deterioration was best to the Hanji. Tensile strength and transmissivity was best in tracing paper, but was low in oil paper, white sketch paper, lyon coat paper. Synthetic carrier to tensile strength showed higher than paper carrier and to the transmissivity showed 2-8 times higher than paper carriers. The tracing paper to the transmissivity was 10 times higher than others. To determine characteristic of conservation to the selected carriers, stability of deterioration was examined at conditions of $90^{\circ}C$ for 15 days. Oil paper and white sketch paper turned strongly yellowish. Cellulopane, Felt, and Cpp film showed stable stability of deterioration, but deformation like wrinkles. PET film and Syntheletic film showed excellent conservation characteristics without any change of exterior. Test of adhesive uniform between carriers and adhesive processability was performed. PET film > Syntheletic film > Tracing Paper in order were determined. Ununiformal adhesive characteristics appeared to Hangi. Accordingly, we thought that Hanji as carrier material might be unsuitable because of low adhesive processability.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2003년도 춘계전력전자학술대회 논문집(2)
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• pp.536-539
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• 2003

In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

• Korean Chemical Engineering Research
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• 제46권1호
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• pp.76-81
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• 2008

아크릴계 점착제를 합성한 후 이관능성 혹은 육관능성 우레탄-아크릴레이트 올리고머를 혼합하여 자외선 경화형 점착제를 제조하였다. 올리고머 종류 및 함량을 변화시켜 그에 따른 접착력 변화와 재박리 특성을 조사하였다. 자외선 경화전에는 올리고머의 함량의 증가에 따라 박리력이 증가하였으나 자외선 경화 후에는 감소하는 경향을 보였다. 저장 탄성률(G')이 낮을수록 박리력은 증가하지만 점착제 내부의 상용성과 손실계수(tan ${\delta}$) 값에 따라 점착제의 박리정도와 접착력에 영향을 주는 것을 확인할 수 있었다.

• 접착 및 계면
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• 제19권4호
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• pp.167-172
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• 2018

본 연구에서는 폴리우레탄 핫멜트 접착제를 합성 후, 유도가열에 감응하는 금속 입자를 첨가하여 유도가열 melt형 접착제를 제조하고, 금속입자의 종류 및 크기, 유도가열 조건에 따른 열적 거동 및 접착특성을 연구하였다. 다양한 금속입자 중에서 iron 및 nickel 적용 시, 유도가열 효율이 가장 우수하였으며, 금속 입자의 크기가 작을수록 유도가열 효율이 향상되었다. 또한 접착제의 유도가열 출력 세기가 높고, 접착제 두께가 얇을수록 접착강도가 향상되었다.

• Ocean and Polar Research
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• 제45권1호
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• pp.1-9
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• 2023

Marine microalgae have different collection methods depending on their habitat. In the case of adhesive microalgae, it is difficult to separate organisms from the substrate surface, and contamination is likely to occur during the sampling process. In this study, we analyzed the collection efficiency of adhesive microalgae using three artificial fiber materials (nylon, blend fabric, and viscose rayon). Each fiber showed different fiber diameter and pore characteristics (nylon 26.09 ㎛, blend fabric 56.6 ㎛, viscose rayon 101.3 ㎛). In addition, attached organisms were collected on the surface of artificial substrates at Bukseong Port in Incheon using each tested fiber material. After that, we investigated the population and species composition. The highest number of cells was found in nylon, which was 8 times higher than in the least collected viscose rayon material. In addition, we identified 24 microalgal species from the substrate, demonstrating that the species composition differed from that of surface water. The number of collected microalgae species varied depending on the fiber materials, with nylon containing all the adhesive microalgae. In contrast, only a few microalgae were observed in other fibers. These results suggest that, of the tested fibers, nylon material may be suitable for collecting adhesive microalgae. As a result, this study may be useful for future research on adhesive microalgae.

• Applied Microscopy
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• 제51권
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• pp.3.1-3.6
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• 2021

We examined the morphology of fertilized egg and ultrastructures of fertilized egg envelopes of dwarf rainbowfish (Melanotaenia praecox) belong to Melanotaeniidae using light and electron microscopes. The fertilized eggs were spherical with adhesive filament, transparent, demersal, and had a narrow perivitelline space and small oil droplets. The size of fertilized egg was 1.02 ± 0.18 mm (n = 30), and there were two kinds of adhesive filament on the fertilized eggs. The long and thick (diameter 12.22 ± 0.52 ㎛, n = 20) adhesive filaments were only at the area of animal pole, and short and thin (diameter 1.99 ± 0.23 ㎛, n = 20) adhesive filaments were around the long filaments. A micropyle was conical shaped with adhesive filament and located near the animal pole of egg. The outer surface of fertilized egg was rough side. Also, the total thickness of the fertilized egg envelope was about 7.46 ± 0.41 ㎛ (n = 20), the fertilized egg envelope consisted of two layers, an inner lamellae layer and an outer layer with high electron-density. And the inner layer was 8 layers. Collectively, these morphological characteristics and adhesive property of fertilized egg with adhesive filaments, and ultrastructures of micropyle, outer surface, and section of fertilized egg envelope are showed species specificity.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.299-304
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• 2003

In this research, eight waterproofing membranes were selected from commercial market and the tensile adhesive characteristics of the waterproofing system (WPS) on concrete bridge deck were investigated in view of various factor in asphalt pavement. Tensile adhesive strength (TAS) test of different asphalt pavement types showed that TAS of WPS under SMA (Stone Mastic Asphalt) pavement was greater than that under dense asphalt pavement. Tensile adhesive strength (TAS) of sheet membranes was improved as the compaction temperature of asphalt concrete increase, but TAS of liquid membranes were not. TAS of sheet membranes after wheel tracking test were in the order of the sites under wheel path (UWP), before wheel tracking (BWT) and nearby wheel path (NWP), Since TAS of the same WPS of UWP was higher than TAS of BWT, wheel loading had function of pressing WPS resulting in higher adhesive strength, But liquid membranes were variable on types, The feature of detached interface after T AS test showed that sheet types were all detached in between deck concrete and WPS, and liquid types were detached in between asphalt pavement and WPS,

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(III)
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• pp.395-400
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• 2003

Adhesive joining technique is considered as one of hot issues in developing advanced composite structures. The designer should be familiar with important guidelines of fundamental principles and ideas underlying the design and application of adhesive joints for a correct joint design. This study deals with the following characteristics of adhesive joining techniques: (1) design parameters the affect the performance of joining, (2) fundamental principles and design methods of joining, (3) adhesive selection, (4) surface pre-treatment of the adherand, and (6) test methods. The results would be used to predict the performance of adhesive joints subjected to a thermal aging.

• Structural Engineering and Mechanics
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• 제18권3호
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• pp.315-330
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• 2004

A four-point bending RC beam strengthened with FRP plate is investigated based on the theory of elasticity. Taking the adhesive layer into account but ignoring some secondary parameters, the analytical solutions of the normal stress and shear stress on concrete-adhesive interface are obtained and discussed. Besides, the pure bending region of the beam is analyzed and the ultimate load of the beam is predicted. The results obtained in the present paper agree very well with both the results of FEM and the experimental findings.

• 산업경영시스템학회지
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• 제23권54호
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• pp.137-144
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• 2000

The chloroprene adhesive for ladies' shoe-making applied by the cementing method in KS G 3116 has been evaluated.. For the quality test of adhesive for pump whole cut vamp using chloroprene adhesive, general property and adhesion strength were measured and duration for environmental exposure was tested. Also, a list of experiments for field application was prepared. In case of adhesion-strength measurement,, the KS G 3116 method of peel strength at end of toe was found to be reasonable by measurement through a whole length, toe to heel seat on feather edge.