Transparent adhesives

Ibid, A Thermoplastic Transparent Adhesive for Bonding Polycarbonate to Glass , Report No AMMRC CR-71-10, Contract DAAG46-71-... 

Representative samples of the lacquered, metallized, or coated materials are taken and by means of a sharp knife a cross-hatched pattern of squares of dimensions 1 mm by 1 mm is cut into the surface. A strip of transparent adhesive tape of good quality is pressed firmly over the test area, then pulled away in a single continuous movement. Finally the test area is examined and whether squares have been removed (and in what number) noted. 

Husemann [6] prepared UV-transparent adhesives consisting of acrylic acid, acrylamide, and 2-ethylhexyl acrylate that were effective as pressure-sensitive adhesives. 

Proper choice of filler allows to modify shrinkage of UV curable transparent adhesives.The shrinkage of UV curable adhesive was reduced by factor 2-3 by incorporation of quartz which has better UV light transparency than conventionally... 

Characters.—Pale yellow ductile oleo-resin, of the consistence of thin honey peculiar agreeable odour, slightly bitter, feebly acrid taste by exposure to air it dries very slowly into a transparent adhesive varnish solidifies when mixed with a sixth of its weight of magnesia. 

Nanofillers have also been used to improve the optical properties of adhesives. Magnesium oxide nanofillers in cyclic olefin or polymethylmethacrylate resin formulations have resulted in improved temperature-stable optically transparent adhesives. Filler sizes well below the wavelength of visible light (400-700 nm) were reported to greatly reduce scattered light of filled polymers and to provide optical stability and stable refractive indices over a range of temperatures. ... 

Present solid-state (photovoltaic) mul-tijunction photovoltaics exist in one of two modes, either splitting (in which the solar spectrum is optically separated before incidence on the cells) or stacked devices. The latter mode has been developed as either monoKthic (integrated) or mechanically (discrete cells layered with transparent adhesive) stacked cells. Most monoKthic stacked multijunction photovoltaics under development use III-V semiconductors in at least one of the layers and take advantage of the variations in band gap and close lattice match achieved with other related III-V alloys. For example, GalnP has been used as a wide gap top cell, or GaSb and GalnAsP as small gap lower cells, for III-V top-layer multijunction cells other cells use silicon or CIS cells as a lower layer [12-15]. 

Other minor uses include bonding polyester laminates to polyester or to metal, and as adhesives for optical equipment. CR-39 allyl diglycol carbonate is an example of the latter. This material, in the cured condition, exhibits improved abrasion and chemical resistance over other transparent adhesive resins and displays the good heat resistance and dimensional stability associated with thermosetting systems. These properties are retained on prolonged exposure to severe environmental conditions. CR-39, which stands for Columbia Resin 39, is an allyl resin, a special type of unsaturated polyester. ... 

Murata, N., Nishi, S. and Sighesu, H., UV-curable transparent adhesives for fabricating precision optical components, J. Adhesion, 1996,59, 39-50. 

The miscibility of polymers can be qualitatively predicted by the stability of their solution in a common solvent. Theoretically, miscibility is considered at a molecular level. From the practical point of view, miscible polymers are those which answer certain requirements, for example they possess transparency, adhesion between components, etc. In fact, most such materials are microheterogeneous. 

Shear Adhesion (Creep). The most significant example of creep is a tape gliding down under shearing load. Therefore, most commonly creep is characterized by the time a tape holds under defined shear load (Fig. 13). This often is called holding power or shear adhesion. Further examples of creep are the telescoping of rolls of stretchable pressure-sensitive tapes and the greasy spots occurring on a paper sheet mended by a transparent adhesive tape. 

Manufecturers Comments Family of adhesives (U1, U3, U4) various Manufecturers Comments Transparent adhesive for bonding acrylic ... 

Manufacturers Comments Fast cure. Choice of activator, no-mix. Manufacturers Comments UV curing. Optically transparent adhesive ... 

XXL General Purpose Transparent Adhesive Natural mbber 100... 

New UV/EB adhesives for transparent adhesion to rigid piastic substrates... 

New UV/EB adhesives specially designed for Transparent Adhesion to Rigid Plastic Substrates. 

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