Poly sleeves

Fig. 11. Crimp terminal contigurations (a) straight battel, 90° tongue, where wine without insulation is crimped in the battel, (b) Open battel having insulation-piercing lances, (c) Nylon or poly(vinyl chloride) preinsulated terminal accommodating and supporting wine insulation. Wine without end insulation is insetted in the terminal and is crimped. The terminal sleeve is not broken but conforms to the shape of the crimp indent, (d) Quick disconnect...

Nylon and poly(vinyl chloride) sleevings ate used for preinsulated terminals. Ceramics (qv) ate employed in some high voltage power connectors. Hard mbbet shells insulate connectors that serve underground power distribution cables. 

The Material of the Example. Poly(ether ester) (PEE) materials are thermoplastic elastomers. Fibers made from this class of multiblock copolymers are commercially available as Sympatex . Axle sleeves for automotive applications or gaskets are traded as Arnitel or Hytrel . Polyether blocks form the soft phase (matrix). The polyester forms the hard domains which provide physical cross-linking of the chains. This nanostructure is the reason for the rubbery nature of the material. 

Poly(phenylene sulfide) (PPS Ryton) is a solvent-resistant plastic that is useful in high-temperature service (structure 4.71). PPS is used for pumps, sleeve bearing, cookware, quartz halogen lamp parts, and electrical appliance housings. 

Fig. 16.2. Schematic of a capillary column, in which the MIP particles were held by closing the ends of the capillary with poly(acrylamide) plugs. The MIP containing part of the capillary was connected to an open, buffer-filled capillary via a teflon sleeve. Reprinted from Ref. [62] Copyright (1997), with permission from Marcel Dekker, Inc.

In a 4-oz bottle equipped with a cap lined with Mylar are placed 25 gm of distilled water. 0.0050 gm of potassium persulfate, 0.51 gm of poly(vinyl alcohol) [Elvanol 52-22, a Du Pont product, 86-89% hydrolyzed poly(vinyl acetate) of medium molecular weight with a viscosity of a 4% aqueous solution at 20°C of 20-25 cP], and 5.00 gm of vinyl acetate. Prior to capping the bottle, oxygen-free nitrogen is bubbled through the contents. The bottle is closed, placed in a steel protective sleeve, and placed on a suitable rack which permits end-over-end rotation of several such bottles in a constant temperature bath at 70 - 0.1°C. 

On-Chip Electrospray, Fig. 4 On-chip ESI-MS device employing a fused silica transfer capillary. The electric contact was established through a stainless steel capillary connected to the silica capillary using a poly(tetrafluor-oethylene) sleeve. Another fused silica capillary... 

Poly(vinyl chloride), PVC-U. Applications extruded profiles, sealing joints, jackets, furniture, claddings, roller shutters, fences, barriers, fittings, injection-molded articles, sheets, films, plates, bottles, coated fabrics, layers, toys, bumpers, buoys, car parts, cards, holders, sleeves, pipes, boxes, inks, lacquers, adhesives, foams. 

Sivaramakrishnan a/. (1989) described BST matrix implants consisting of either BST/ethyl cellulose or BST/poly(lactic acid) (Hi2700) contained within microporous polyethylene sleeves (average pore size 30-70 m). The in vitro dissolution studies showed significant initial release from uncoated tablets (70% cumulative release in the first 4 days to a total of 80% in 8 days) the coated tablets had sustained release over 14 days with 35% cumulative release over that time. 

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