Canvas resin

Fig. 38. Effect of resin type in Neoprene latex 750 adhesives on canvas-to-canvas peel strength. Bonds aged 7 days at room temperature [14].

Seventy years ago, nearly all resources for the production of commodities and many technical products were materials derived from natural textiles. Textiles, ropes, canvas, and paper were made of local natural fibers, such as flax and hemp. Some of them are still used today. In 1908, the first composite materials were applied for the fabrication of big quantities of sheets, tubes, and pipes in electrotechnical usage (paper or cotton as reinforcement in sheets made of phenol- or melamine-formaldehyde resins). In 1896, for example, airplane seats and fuel tanks were made of natural fibers with a small content of polymeric binders [1]. 

Plyophen [Reichhold], TM for a water-soluble impregnating resin. Penetrates deeply and quickly into wood, canvas, asbestos, paper, and other laminating and molding stocks. Can be diluted as much as 8-10 parts water to 1 part resin for spraying glass fiber or rock wool. 

We would have no Bible, no Greek epics and tragedies, and no Roman history without parchment and papyrus. There would be no paintings of Leonardo, Raphael, and Rembrandt without canvas and polymerizing oils. And were would be no music of Corelli, Beethoven, and Tchaikovsky without string instruments, all of which consist entirely of natural organic polymers such as wood, resins, and lacquers. 

Typical ATR crystal materials are listed in Table 4.6. Samples must be in actual intimate physical contact with the ATR crystal. The first ATR systems were designed to analyze solids that could be pressed against the surface of the crystal polymers, films, moldable resins, textiles, canvas paintings, and the like. Little or no sample preparation is required. For example, the IR spectrum of a valuable painting could... 

Neoprene latex/butylated phenolic resin/MgO Canvas to painted steel 0.34 (50) [36] 52.5 (30) [Oe]"... 

Thermoplastic-based blends are widely used in military applications for various reasons. One of the reasons is the need to have the best technology to win a battle. During World War I when aerial combat first took place, canvas and dope (shellac) covering for airplane wings and fuselages was used, and that is one of the earliest uses of composite materials. By the time the war ended, BaekeUte (invented in 1907) was in commercial production. A canvas and phenolic resin composite was being widely used for airplane and marine components when World War n started. 

Hedley, G. A. (1975). The effect of beeswax/resin impregnation on the tensile properties of canvas. In 4th triennial meeting, Venice, 13—18 October 1975preprints, 75/11/7. International Council of Museums Committee for Consawation. 

Epoxy resins have been used in canvas picture conservation. An unfortunate use as a varnish caused problems in identification and removal (Keck and Feller, 1964). Epoxy resin adhesives have been used for sticking threads across tears in canvases and also as a filler (Berger and Russell, 1993). The formulations need to be of sufficiently high viscosity to prevent absorption into the canvas, but must be flexible enough to respond to movement in the fabric. 

Formica for- mi-ko, for- A trademark of the Formica Corporation for high-pressure, decorative laminates of melamine-formaldehyde, phenolic and other thermosetting resins with paper, linen, canvas, glass cloth, etc., often misused by the public in a generic manner. 

Resins. Because of colloidal incompatibility, the metal oxide/r-butyl phenolic resin complex which in solvent adhesives provides improved adhesion largely and hot strength is ineffective in latex systems. Of the types of resins which are commonly used in Neoprene latex adhesives, only the terpene phenolics such as Durez 12603 (Occidental) and SP-560 (Schenectady) do not cause an appreciable loss in hot strength as the resin content is increased. Others such as coumarone indene resins, liquid terpene resins and rosin esters are valuable from a standpoint of increasing adhesion and open time, but decrease cohesive strength at elevated temperatures. This is illustrated in Fig. 8, where canvas-to-canvas peel strength at 70°C (158°F) is plotted against resin level with several different classes of resins in Neoprene Latex 750. Only the terpene phenolic systems provided adhesive failure, even at the 50 phr... 

For example, polyamides are typically applied as one part hot melts but are also available in alcohol base solution. Blending of polyamides with other polymers is frequently used to obtain tack and other required properties. For example, blending of amorphous polypropylene enhances peel adhesion to acrylic and canvas, and blending of phenolic resin produces high peel adhesion to plasticized polyvinyl chloride (PVC), porous materials, and metals. 

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