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  • Title/Summary/Keyword: Bonding Adhesives

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Latest Joining Technology of Metal and Plastic (금속과 플라스틱의 최신접합기술)

  • Kim, Youngsik;Kil, Sangcheol
    • Journal of Welding and Joining
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    • v.34 no.3
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    • pp.31-39
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    • 2016
  • The joining technology of the metal and engineering plastic is rising lately as the important issue in concerning with the method of reducing the weight and air pollution of the transportation structure such as automotive and vehicles. The metal/ plastic joining technology has been developed in 2 types of adhesively bonding and direct joining without adhesives. Moreover, in the direct joining method, there are 2 kinds of mechanical joining and welding. This review paper presents the present world wide status and tendency of the development of metal/plastic joining technology. This article intends to offer the materials for development and raising of the domestic metal/plastic joining technology.

COMPARISON OF SHEAR BOND STRENGTHS OF FOUR DENTINAL ADHESIVES (네가지 상아질 접착제의 전단 결합 강도 비교)

  • Cho, Kyeong-Mee;Hur, Bock;Lee, Hee-Joo
    • Restorative Dentistry and Endodontics
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    • v.21 no.1
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    • pp.280-288
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    • 1996
  • The purpose of this study was to assess comparatively the shear bond strength on dentin of four dentin bonding agents used in conjunction with light-curing composite resins. Clearfil New Bond, Scotchbond Multipurpose Dentin Adhesive, All-Bond 2 and X-R Bond were applicated on labial dentin surfaces just below dentin - enamel juction of bovine incisor teeth. After shear bond strength testing with the universal testing machine, the bonding interface of the specimens were observed under light stereomicroscope. Following results were obtained. 1. The shear bond strength was high in the order of B,C,D,A and group B Scotchbond Multipurpose Dentine Adhesive revealed greater bond strength than Clearfil New Bond and X-R Bond. (p<.001) 2. When using ANOVA and Duncan's multiple range test, there were statistical differences among the four groups, except between group Band C,group D and A. 3. There was no relationship between mode of failure and shear bond strength.

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Low resistance and low temperature bonding between Silver and Indium

  • Cho, Sung-Il;Yu, Jin;Kim, Young-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.275-278
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    • 2002
  • Conductive adhesives are commonly used for the interconnections of fine pitch, small packages like mobile applications. Since conductive particles connect mechanically with contact pads to give somewhat higher contact resistance, a metallurgical interconnection, which provides both fine pitch and low resistance, was studied using silver ball and indium which can be made at low temperatures. The connection resistance of the In-Ag metallurgical interconnection was lower than that of the Ni/Au-Ag mechanical interconnection and the former showed little dependency on the bonding load in contrast to the latter.

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Micro-shear bond strength of resin-bonding systems to cervical enamel.

  • Shimada, Y.;Kikushima, D.;Iwamoto, N.;Shimura, R.;Ide, T.;Nakaoki, Y.;Tagami, J.
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.560.1-560
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    • 2001
  • To evaluate the micro-shear bond strength of current adhesive systems to cervical and mid-coronal enamel. Materials and Two commercially available resin adhesives were investigated; a self-etching primer system(Clearfil SE Bond, Kyraray) and a one-bottle adhesive system(Single Bond, 3M) intended for use with the total-etch wet-bonding technique were employed. Two regions of enamel, cervical and mid-coronal regions, were chosen from the buccal surface of extracted molars and were then bonded with each adhesive system and submitted to the micro-shear bond test.(중략)

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Bending and free vibration analysis of a smart functionally graded plate

  • Bian, Z.G.;Ying, J.;Chen, W.Q.;Ding, H.J.
    • Structural Engineering and Mechanics
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    • v.23 no.1
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    • pp.97-113
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    • 2006
  • A simply supported hybrid plate consisting of top and bottom functionally graded elastic layers and an intermediate actuating or sensing homogeneous piezoelectric layer is investigated by an elasticity (piezoelasticity) method, which is based on state space formulations. The general spring layer model is adopted to consider the effect of bonding adhesives between the piezoelectric layer and the two functionally graded ones. The two functionally graded layers are inhomogeneous along the thickness direction, which are approached by laminate models. The effect of interlaminar bonding imperfections on the static bending and free vibration of the smart plate is discussed in the numerical examples.

Antibacterial and remineralization effects of orthodontic bonding agents containing bioactive glass

  • Kim, You-Min;Kim, Dong-Hyun;Song, Chang Weon;Yoon, Seog-Young;Kim, Se-Yeon;Na, Hee Sam;Chung, Jin;Kim, Yong-Il;Kwon, Yong Hoon
    • The korean journal of orthodontics
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    • v.48 no.3
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    • pp.163-171
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    • 2018
  • Objective: The aim of this study was to evaluate the mechanical and biological properties of orthodontic bonding agents containing silver- or zinc-doped bioactive glass (BAG) and determine the antibacterial and remineralization effects of these agents. Methods: BAG was synthesized using the alkali-mediated solgel method. Orthodontic bonding agents containing BAG were prepared by mixing BAG with flowable resin. TransbondTM XT (TXT) and CharmfilTM Flow (CF) were used as controls. Ion release, cytotoxicity, antibacterial properties, the shear bond strength, and the adhesive remnant index were evaluated. To assess the remineralization properties of BAG, micro-computed tomography was performed after pH cycling. Results: The BAG-containing bonding agents showed no noticeable cytotoxicity and suppressed bacterial growth. When these bonding agents were used, demineralization after pH cycling began approximately 200 to 300μm away from the bracket. On the other hand, when CF and TXT were used, all surfaces that were not covered by the adhesive were demineralized after pH cycling. Conclusions: Our findings suggest that orthodontic bonding agents containing silver- or zinc-doped BAG have stronger antibacterial and remineralization effects compared with conventional orthodontic adhesives; thus, they are suitable for use in orthodontic practice.

Effect of Adhesive Shape on the Strength of Aluminum/Polycarbonate Joint (접착부 형상이 알루미늄/폴리카보네이트 접합재의 강도에 미치는 영향)

  • Seo, Do-Won;Kim, Hyo-Jin;Choi, Jun-Yong;Hoa, Vu cong;Lim, Jae-Kyoo
    • Proceedings of the KSME Conference
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    • 2003.11a
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    • pp.1039-1044
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    • 2003
  • Adhesive-bonded joints are widely used in the industry. Recently aircraft applications of adhesive bonding joints have been increased extensively in automobile and air industry. Because adhesives which are available for structural applications have been developed a lot and understanding of adhesive bonding has been improved so much. In this study, as the fundamental research of design of adhesive bonding joints, this study considers specimen shape are affect strength and durability of Al/Polymer lap joints. In this research, cross head speed difference were concerned to evaluate their effects on the adhesive strength. Cross head speed makes a change 0.05mm/min, 0.5mm/min, 5mm/min. The result is load-displacement diagram showed brittleness fracture tendency. Fracture tendency that is shown enough on stress distribution of trigonal single lap joint and trigonal edged single lap joint occur the inside of adhesive.

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Surface Preparation and Activation Only by Abrasion and Its Effect on Adhesion Strength

  • Ali Gursel;Salih Yildiz
    • Journal of Adhesion and Interface
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    • v.23 no.4
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    • pp.101-107
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    • 2022
  • Adhesive joints have many advantages such as weight savings, corrosion and fatigue resistance and now developed even withstand of high impact and dynamic loads. However, an adhesion has cumbersome and complicated surface preparation processes. The surface preparation step is critical in adhesive joint manufacturing in order to obtain the prescribed strength for adhesive joints. In this study, it was attempted to simplify and reduce the number of surface preparation steps, and abrasion and rapid adhesive application (ARAA) process is developed for an alternative solution. The abrasion processes are performed only for creating surface roughness in standard procedures (SP), although the abrasion processes cause surface activation itself. The results showed that there is no need the long procedures in laboratory or chemical agents for adhesion. After the abrasion process, the attracted and highly reactive fresh surface layer obtained, and its effect on bonding success is observed and analyzed in this research, in light of the essential physic and adhesion theories. Al 6061 aluminum adherends and epoxy-based adhesives were chosen for bonding processes, which is mostly used in light vehicle parts. The adherends were cleaned, treated and activated only with abrasion, and after the adhesive application the specimens were tested under quasi-static loading. The satisfied ARAA results were compared with that of the specimens fabricated by the standard procedure (SP) of adhesion processes of high impact loads.

TENSILE STRENGTH OF ORTHODONTIC DIRECT BONING ADHESIVES (교정용 접착제의 인장강도)

  • Kwon, Oh-Won
    • The korean journal of orthodontics
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    • v.12 no.1
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    • pp.15-20
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    • 1982
  • The requirement of ideal orthodontic direct bonding adhesive should include longevity of bond, ability to withstand a variety of forces, resistance to the degrading effects of the oral environment, and ability to be easily removed without affecting the integrity of the enamel. The purpose of this study was to evaluate the adhesive properties of recently developed 3 orthodontic directbonding adhesives by testing the tensile strength. 75 premolars extracted for orthodontic treatment were used. The tensile strength was tested by Tensilon/UTM-1-10000C after 24 hours from bonding. Following results were obtained; The mean tensile strength of each product was higher than the maximum force (29kg/cm2) exerted on a bracket during orthodontic treatment. The tensile strength of Mono-Lok was statistically higher than Concise and Dyna-Bond, although there was no difference between the tensile strength of Concise and Dyna-Bond statistically. Of the filure, the combination type of failure (68%), where part of the adhesive remained on the tooth and part on the bracket was the most common type. The second type of failure (22.7%) occurred at the toothadhesive interface and the last type of failure (9.3%) occurred at the adhesive-bracket interface.

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