Plastic final

Thermal Reycling of Plastics, Final Report to the American Plastics Council, Energy Environmental Research Center, Grand Eorks, N.D., March 1994. 

Tkis.is the third chapter in a series of three where the products are like pancakes and batter. You can t make pancakes (or vinyl chloride) without maldng batter (or ethylene dichloride) there s not much else you can do with pancake batter (or ethylene dichloride) and you only use pancakes or vinyl chloride to make something else—brealcfast or plastics. Finally, if you ll permit this painfully overbearing analogy to be extended once more, maldng vinyl chloride (or pancakes) from-scratch is a lot easier now than it was 40 years ago. 

Clery, D. (25 March 1994) After years in the dark, electric plastic finally shines. Science, 263, 1700-2. 

There are yet more similarities between protein and dairy products. For example, highly processed protein products (e.g., ground, mixed and canned) also contain disinfection byproducts. Thus, hot dogs, ground beef, bologna, salami, and canned tuna are contaminated with chloroform and sometimes with bromodichloromethane. Benzene, toluene, ethyl benzene, and xylenes, as well as the other detected chlorinated petroleum solvents (e.g., PCE, TCA, and TCE), also occur in protein products because these chemicals were in products used to lubricate or clean machinery that contacted the dairy products, or because these chemicals were in the ambient air of the meatpacking plant. Protein products also contain styrene from contact with plastics. Finally. PCB (a banned industrial chemical) was found to occur in every Market Basket sample of salmon. 

Conrad Industries, Advanced Recycling of Plastics A Parametric Study of the Thermal Depolymerization of Plastics, final report with the American Plastics Council, June (1995). 

Qery, Daniel. After Years in the Dark, Electric Plastic Finally Shines, Science (March 25,1994) 1700-02. 

The properties and characteristics of films in the optical and electro-optical categories are discussed because these types constitute the most important applications of coatings on glass and plastics. Finally, some tables containing pertinent film data are appended. 

Edge gating is the worst possible flow path the plastic flow always takes the path of least resistance and circles the thinner center before starting to fill it. The plastic will finally converge toward the center and, unless there are provisions in the mold (spot vents) to allow escape of the air trapped by the converging plastic streams, there will be a pronounced mark (a hole, void, bum, or weld) at the point where the plastic finally joins. 

Torikai A, Kato H, Fueki K, Suzuki Y, Okizaki A, Nagata M (1993) J AppI Polym Sci 50 2185 Andrady AL, Accelerated environmental exposure. Laboratory testing, and recyclability study of photo/biodegradable plastics . Final Report to USEPA under Contact 68-02-4544 Task 11-60. January 1991. 

A. Laird, Glass Surface Chemistry for Glass Reinforced Plastics, Final Report, Navy Contract W-0679-C (FBM) 1963. 

CH2=CHC = CCH = CH2. a colourless liquid which turns yellow on exposure to the air it has a distinct garlic-like odour b.p. 83-5°C. Manufactured by the controlled, low-temperature polymerization of acetylene in the presence of an aqueous solution of copper(I) and ammonium chlorides. It is very dangerous to handle, as it absorbs oxygen from the air to give an explosive peroxide. When heated in an inert atmosphere, it polymerizes to form first a drying oil and finally a hard, brittle insoluble resin. Reacts with chlorine to give a mixture of chlorinated products used as drying oils and plastics. 

Finally, in yet another variant, the sample liquid stream and the gas flow are brought together at a shaped nozzle into which the liquid flows (parallel-path nebulizer). Again, the intersection of liquid film and gas flow leads to the formation of an aerosol. Obstruction of the sample flow by formation of deposits is not a problem, and the devices are easily constructed from plastics, making them robust and cheap. 

The industrial value of furfuryl alcohol is a consequence of its low viscosity, high reactivity, and the outstanding chemical, mechanical, and thermal properties of its polymers, corrosion resistance, nonburning, low smoke emission, and exceUent char formation. The reactivity profile of furfuryl alcohol and resins is such that final curing can take place at ambient temperature with strong acids or at elevated temperature with latent acids. Major markets for furfuryl alcohol resins include the production of cores and molds for casting metals, corrosion-resistant fiber-reinforced plastics (FRPs), binders for refractories and corrosion-resistant cements and mortars. 

Material Tests. Material tests measure some property of the polymer or plastic as opposed to measuriag the flammabiUty of the final product which contains the plastic. 

Cblorina.ted Pa.ra.ffins, The term chlotinated paraffins covers a variety of compositions. The prime variables are molecular weight of the starting paraffin and the chlorine content of the final product. Typical products contain from 12—24 carbons and from 40—70 wt % chlorine. Liquid chlotinated paraffins are used as plasticizers (qv) and flame retardants ia paint (qv) and PVC formulations. The soHd materials are used as additive flame retardants ia a variety of thermoplastics. In this use, they are combiaed with antimony oxide which acts as a synergist. Thermal stabilizers, such as those used ia PVC (see vinyl polymers), must be used to overcome the inherent thermal iastabiUty. 

The two primary types of plastics, thermosets and thermoplastics, are made almost exclusively from hydrocarbon feedstocks. Thermosetting materials are those that harden during processing (usually during heating, as the name implies) such that in their final state they are substantially infusible and insoluble. Thermoplastics may be softened repeatedly by heat, and hardened again by cooling. 

---