Objects tacky

Unfortunately, films formed by 25 d are still quite tacky which make them unsuitable for these applications. Visualization of air flow over objects such as aircraft requires materials which provide a smooth, abrasive resistant surface. With this in mind, the cationic chain end of 19 (see Scheme 1) was reacted with tetrahydrofuran resulting in polythionylphosphazene-h-polytetrahydrofuran block copolymer (30 and 31) [46] ... 

Influence of Thickness of Oil Layer on Adhesion. Atmospheric dust generally contains not only solid particles, but also oily contaminants, which settle on surfaces and make the surfaces oily. Also, the surfaces of some objects such as motor vehicles may become oily in the operating process. It has been found that 17% of the adherent particles on the surfaces of motor vehicles operating in Moscow do have such a layer of oil. Roughly the same results were obtained in an analysis reported in [234] on the contaminants appearing on exterior surfaces of railroad rolling stock. On a locomotive, for example, 23% of the adherent particles were in contact with oily surfaces, and on the railroad cars the figure was 19%. The presence of oily contaminants on surfaces tends to increase particle adhesion because of tackiness this is illustrated by data shown in Table VIII.8 [11]. 

Petroleum jelly has been added to organic materials (e.g. leather) to impart flexibility (Leechman, 1931 Yusupova, 1979). The more fluid portions of the jelly are likely to migrate out of the object. Petroleum jelly is very tacky aud will hold dirt readily. 

In order to fix particles to plastic objects, one uses a solvent imparting the property of tackiness to the surface [252]. 

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