نتایج جستجو برای: based adhesives
تعداد نتایج: 2939802 فیلتر نتایج به سال:
Four polymerizable α-phosphonooxy phosphonic acids 7a, 7b, 9 and 16 were synthesized in seven steps. They were characterized by 1H, 13C and 31P NMR spectroscopy and by high-resolution mass spectroscopy. The copolymerization of acidic monomers 7a, 7b, 9 and 16 with 2-hydroxyethyl methacrylate was studied using a differential scanning calorimeter. Due to the presence of two acidic groups, those m...
Surgical tissue adhesives continue to evolve as an important technology for the facial plastic and reconstructive surgeon. Twelve years ago there was little routine use of these substances; however, in the past 5 years there have been significant advances. It is becoming increasingly important for the facial plastic and reconstructive surgeon to be familiar with the indications and shortcomings...
Synthetic fibrillar adhesives inspired by nature, most commonly by the gecko lizard, have been shown to strongly and repeatedly attach to smooth surfaces. These adhesives, mostly of monolithic construction, perform on par with their natural analogues on smooth surfaces but exhibit far inferior adhesive performance on rough surfaces. In this paper, we report on the adhesive performance of functi...
BACKGROUND Tissue adhesives may be useful for sealing bowel anastomoses by preventing anastomotic leakage. Prior to clinical implementation, an in-depth analysis of the clinical and immunohistopathological effects of tissue adhesives on the target tissue and of the mechanical strength of the adhesive bond in an in vivo model is needed. MATERIALS AND METHODS In 84 rats, two bowel segments were...
This paper reflects on the state of the art of self-etch adhesives anno 2010. After presenting the general characteristics of self-etch adhesives, the major shortcomings of the most simple-to-use one-step (self-etch) adhesives are addressed. Special attention is devoted to the AD-concept and the benefit of chemical interfacial interaction with regard to bond durability. Finally, issues like the...
Factors contributing to the incompatibility between new adhesive systems and various composite resin restorations Dr. F. Maleknejad* - Dr. H. Moosavi** *- Associate Professor of Operative Dentistry Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences. **- Assistant Professor of Operative Dentistry Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences. ...
A three-dimensional analysis of cracks in adhesively bonded laminates, with debonding around the crack, is presented. The three-dimensional finite element method is based on a hybrid-stress procedure. Effects of the following parametricvariations are studied: (i) relative thicknesses of adhesives, (ii) relative material properties of adhesives and adherends, (iii) ratio of flaw length, to lamin...
VALÁŠEK PETR, MÜLLER MIROSLAV. 2016. Possibilities of Adhesives Filling With Micro-particle Fillers – Lap-shear Tensile Strength. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(1): 195–201. An adhesive bonding can be ranged among technologies of materials bonding which are used in all industrial branches. It plays its important role also in an area of the constructio...
The development of natural-based adhesives is a key aspect in reducing the consumption fossil resources, adapting to legislation on use formaldehyde and ensuring sustainability wood panel industry. This study focuses five alternatives for tannin-based (tannin-paraformaldehyde, tannin-glyoxal, tannin-hexamine, tannin non-isocyanate polyurethane (NIPU) with ammonium hydroxide NIPU HDMA bio-adhesi...
Cyanoacrylates were commercially introduced in 1950 by Tennesee Eastman Company. Cyanoacrylate adhesives are monomeric adhesives. They are generally quick-setting materials which cure to clear, hard glassy resins, useful as sealants, coatings, and particularly adhesives for bonding together a variety of substrates [1]. Polymers of alkyl 2-cyanoacrylates are also known as superglues. In addition...
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