Engineering resins polyesters

Table 10.9. Forming methods for blends of engineering resins Polyester, POM and PPE based blends...

The two polymers appear to be well balanced, and future competitive pressure will almost assuredly come not from each other, but rather from other polyamides and, even more likely, from other polymers, such as low cost polyolefins and polyesters or high performance engineering resins. 

Polyester Resins. The general formula of engineering thermoplastic polyester resin may be given as foUows ... 

Both terephthalic acid (TPA) and dimethyl terephthalate (DMT) are used exclusively for the manufacture of polyesters for textile fibers (e.g,. Dacron ), films, soft-drink bottles, and engineering resins for automotive applications. The glycol used for most TPA-based polyesters is ethylene glycol. The polyester is then known as polyethylene terephthalate, or PET. 

AMOCO, Extending the use of polyesters in engineering resins, Brochure GTSR-A, Amoco Chemical Company, Chicago, IL, 1 May, 1994, p. 14. 

Engineers like to design machines that take plastics and inject them into molds, extrude them into filament, sheets, rods, and film, or blow-mold them into shapes. They want these plastics to have a terrific balance of mechanical, electrical, and chemical properties. That s why they have attached their name to engineering resins, a set of plastics unlike thermosets that they can remelt and further process mechanically. Nylon, polycarbonates, and polyesters are the three most popular engineering resins. 

Polyester fibers. The process for producing polyesters was covered lightly in the sections on engineering resins. Read it carefully, and it will make sense, despite the formidable nomenclature and diagrams. Its really not that hard. 

Engineering resins are polymers designed to excel in. certain physical characteristics. For the most part they are thermoplastics, but they can be thermosets as well. Examples are Nylon 6, Nylon 66, polycarbonates, and polyesters. Phenolics can be considered engineering resins. 

While carbon fiber (thickness on the order of 1000 nm) composites offer very strong materials, carbon nanotubes make even stronger composites. These carbon nanotubes have aspect ratios of over 1000 (ratio of length to diameter). Further, because some carbon nanotubes are electrically conductive, composites containing them can be made to be conductive. A number of carbon nanotube matrixes have been made including using a number of engineering resins, such as polyesters, nylons, polycarbonates, and PPE. 

Aromatic polyesters -as engineering resins [ENGINEERING PLASTICS] (Vol 9)... 

Fig. 1. US total sales and captive use of selected thermoplastic resins by major market for 2001. Major market volumes are derived from plastic resins sales and captive use data as compiled by VERIS Consulting, LLC and reported by the American Plastics Council s Plastic Industry Producers Statistics Group. Selected thermoplastics are low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, nylon, polyvinyl chloride, thermoplastic polyester, engineering resins, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, other styrenics, polystyrene, and styrene butadiene latexes. (Data from ref. 25.)...

Polymers are long-chain molecules composed of repeated smaller units called monomers. The term polymer spans an enormous spectrum of substances that find widespread use in virtually all aspects of modern society. Polymers range from high-volume commodity types (polyethylene, polystyrene, etc. ), to synthetic fibers (polyesters, polyamides, etc.), to engineering resins (polycarbonates, polyacetals, etc.), and beyond. 

Sabre. [Dow Plastics] PC/polyester resin engineering resin. 

VaknKB. [GE Plastics GE Plastics Ltd.] PET or PBT polyester resins, some glass or mineral i fotced engineering resins for connectors, switches, potentiometers, health care prods., busi-... 

Modification of Engineering Resins Specific interaction of the phosphonium ionomer from Exxpro elastomer with selected engineering resins such as Polycarbonates(PC), Polyesters(PET), Polyacrylates(PAE), Polyamides(PA), Polyphenylene Oxide(PPO), and Acetals(PAc) can be utilized to compatibilize, impact modify or nucleate the above resin in blends with similar polymers. Typical examples are ... 

PET is a thermoplastic polymer resin of the polyester family. PET is used in synthetic fibers beverage, food and other liquid containers thermoforming applications and engineering resins often in combination with glass fiber. 

Traditionally, the cadmium-based pigments have been widely used in engineering resins such as the polyamides 6 and 6/6, PC, thermoplastic polyesters and their blends and alloys. 

MAJOR APPLICATIONS Automotive, business machine, and electrical/electronics industries. PPO is mainly used to manufacture blends with high-impact polystyrene (HIPS). PPO/nylon, PPO/PBT, and PPO/polyolefin blends are also available on the mcuket. PPO based materials rank first in terms of total consumption among blends based on engineering resins such as nylon, polycarbonate (PC), polyacetal, and reinforced terephthalate polyesters (PET and PBT).( ... 

Uses Flame retardant, plasticizer for PVC and copolymers, PVC plasti-sols, PVC textile coatings, PVAc, cellulosics, polymethyl methacrylate, PS, PP, engineering resins, unsat. polyester, alloys, clear films and sheets. Buna N rubber, acrylic, phenolics food-contact applies. Features Low smoke generation exc. low temp, props. improves processing due to exc. resin solvating power Reguiatory FDA approved for food contact use Properties Colorless clear liq. essentially odorless sol. in most org. soivs. m.w. 362 sp.gr. 1.090 (20/20 C) dens. 9.1 Ib/gal vise. 18 mPas vapor pressure 0.2 mm Hg (150 C) b.p. 462 F (10 mm, dec.) pour pt. -65.2 F flash pt. (COC) 435 F fire pt. (COC) 460 F ref. index 1.508-1.511 8.5% P Phosflex 390 [Akzo Nobel Hatwick Std. Distrib.]... 

Uses Flame retardant, plasticizer for NBR elastomers, PVC (sheeting, coatings for apparel, upholstery, wall coverings, wire insulation, plasti-sols), PVAc adhesives, cellulosics, phenolic, PP, PS, acrylic, engineering resins, unsat. polyesters, alloys... 

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