Self-sticking

Office supplies and office communication have been revolutionized by the introduction of the 3M product Post-it Notes in 1980. The temporary adhesive of these self-sticking notes actually was initially rejected as a glue by its inventor, 3M chemist Spencer Silver, because of its impermanence. However, 3M researcher Art Fry found a niche for the adhesive—as an adhesive for a temporary bookmark for his choir hymnal. Key to the performance of these removable, repositional adhesive products is the application of the adhesive to the backing of a note sheet via tiny microspheres rather than a continuous film. With an average particle diameter of 25-45 fim, the microsphere adhesives form a discontinuous layer that assists in retaining the ability to re-apply the note to new surfaces. Traditional adhesive tape contains particles of smaller dimension (typically 0.1 to 2.0 pm) that coalesce to form a continuous film that limits removal. ... 

Fry made up some samples that he shared with colleagues at 3M, Demand grew,and several new uses evolved. It appeared that a new product was in the making. It took several years, but the self-stick, repositional sheets of paper we now know as Post-it notes eventually became a popular and essentia product in every home, school, and office. 

Label all drawers. Self-sticking labels are sufficient for most labs. How-... 

The major application area for all pressure-sensitive adhesives is in tapes. Self-stick labels provide a second large area, while a range of miscellaneous applications make up the balance of pressure-sensitive adhesive use. 

Several self-sticking notepads (two different colors and/or sizes are recommended, one for events and one for conditions) or index cards and masking or cellophane tape are required, as are a bare wall, table, and bulletin board or blackboard, preferably in a private working location that will be undisturbed and used exclusively by the investigator(s) until the work is complete. 

Pressure-sensitive adhesives form physical bonds with other materials upon brief contact and with light pressure. Examples include self-stick stamps, packaging tape, double-sided tapes, paper labels, and the ubiquitous Post-iE notes. Bond formation results from the polymeric material being able to flow under light pressure, thereby establishing good contact area with the substrate. The debonding step involves deformation of the polymeric material under stress (see Section 12.8.3), followed by separation from the substrate. The adhesives most often involve triblock copolymers such as poly(styrene-h/ock-isoprene-h/ock-styrene) or poly(styrene-Wodc-butadiene-h/ock-styrene), SBR elastomers, natural rubber, or acrylic copolymers (92). 

Self-sticking polyester and vinyl Self-sticking signs can be used indoors and outdoors and are extremely easy to mount. They offer an average outdoor durability of up to five years and have a fair chemical and abrasion resistance. 

From these reactions, it can be seen that the insolubility property of PbS04 is very important, because it makes PbS04 self-sticking on the electrode surface for the battery reactions. 

Individual containers or racks of containers (e.g., trays of scintillation vials) are to be marked with radiation warning labels. These are commercially available as self-stick labels or tape. Chapter 13 contains more information about radioactive materials. 

Most adhesives are counterparts of the coating systans we have already discussed (Table 13.5). A plasticized rubbery polymer has low volatility, high viscosity, and low surface tension, and makes a good adhesive. Cellophane tapes and self-stick postage stamps are typical applications of such a pressure-sensitive adhesive. The material r ains permanently liquid but forms a strong bond between the surface and the cellophane backing when slight pressure is applied to cause flow. When the surface is paper, presumably both specific and mechanical adhesion may be involved. Water... 

Repairs to the coating are made with either hot-melt polyethylene sticks or polyethylene sheet patches with mastic profiling compounds for small damaged areas. Large repair areas are best treated as for field weld joint coating, where either heat-shrink crosslinked polyethylene sleeves or cold-applied self-adhesive laminate tapes are employed. 

The needle stick log will help both employees and employers track all needle sticks to help identify problem areas. The log must be maintained to protect the confidentiality of the injured employee. In addition, employers must have a written Exposure Control Plan that is updated annually. During the annual review, inquiries must be made about new or prospective safer options. If new safer devices are available, they should be adopted for use in the agency. The new guidelines will help reduce needle stick injuries among health care workers and others who handle medical sharps. Safety engineered devices such as self-sheathing needles and needleless systems can be used. 

Zhang, T., Wang, H., and Hu, Y. Z., Atomic Stick-Slip Friction Between Commensurate Self-Assembled Monolayers," Tribology Letters, Vol. 14, No. 2,2003, pp. 69-76. 

Fig. 10.6 (A) Stick representation of the packing of 3 in the crystal, showing the formation of directional tubular conduction pathways (B) schematic representation ofthe hierarchically organized system 3 (top) self-organization in solution and (bottom) sol-gel transcription of encoded molecular features into a hybrid heteropolysiloxane matrix [18].

Ruorinated thermoplastics are only used for high-performance applications related to their high heat, low temperature, chemical inertness, high purity, non-stick and self-lubricating properties. High-purity grades are appreciated by the semiconductor, pharmaceutical and other similar sectors. 

ROCKET A self-propelled hrework with stick, or other mechanism, e.g. hns, for stabilisation of flight. 

Walker AV, Tighe TB, Cabarcos OM, Haynie BC, Allara DL, Winograd N (2007) Dynamics of interaction of magnesium atoms on methoxy-terminated self-assembled monolayers an example of a reactive metal with a low sticking probability. J Phys Chem C 111 765-772... 

I have to stick up for what I believe, to be positive, if I am to retain my self-esteem. ... 

Of course, if we ever can select our favourite beliefs off some menu we shall have to be practical about it. I might want to forget I had cancer but not to forget showing up for treatment. I must avoid beliefs that collide with each other or with reality in such a way that I have to confront my own confusion and recognize my beliefs as unreliable, coming to doubt the beliefs I selected off the menu. Just as lawyers advise us to stick close to the truth because the truth is consistent and easier to remember, self-deceivers will be wise to pick sparingly from that menu. 

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