Plastic foams polycarbonate

Lexan . [GE Plastics GE Plastics Ltd.] Polycarbonate resin thermoplastic resin with high impact strei th, close molding tolerances, low mold shrinkage, dimensional stability, weatherabil-ity and corrosion resistance, uv stability for inj. and blow molding, extrusion, film, and foam q lics. 

Usage of phosphoms-based flame retardants for 1994 in the United States has been projected to be 150 million (168). The largest volume use maybe in plasticized vinyl. Other use areas for phosphoms flame retardants are flexible urethane foams, polyester resins and other thermoset resins, adhesives, textiles, polycarbonate—ABS blends, and some other thermoplastics. Development efforts are well advanced to find appHcations for phosphoms flame retardants, especially ammonium polyphosphate combinations, in polyolefins, and red phosphoms in nylons. Interest is strong in finding phosphoms-based alternatives to those halogen-containing systems which have encountered environmental opposition, especially in Europe. 

Moreover, y-P.V.19 is also found in a variety of other media, such as powder coatings and cast resins. This includes systems based on unsaturated polyester resins whose hardening is not affected by the pigment. The list of application media includes plastics which are processed at very high temperature (such as polycarbonates), in which the pigment is thermally stable up to 320°C. PUR foams and... 

Focusing collectors are usually cast acrylic Fresnel lenses, or mirrors of aluminized polyester film in frames of aluminum. These reflectors are either enclosed in a bubble of poly(vinyl fluoride) film, or under polycarbonate glazing, which may be covered with a fluorocarbon film to reduce the reflectivity. The absorbers for active systems are copper or aluminum since the temperatures are too high (325—370°C) for plastics. The frames, however, can be molded ABS, high density polyethylene or polyurethane, either solid or structural foam. Polybutylene or chlorinated PVC can be used for piping hot water, and tanks can be made of either reinforced polyester or blow- or rotational-molded, high density polyethylene (12—15). 

As of 1992, the first specialty platable plastic, acrylonitrile—butadiene—styrene (ABS) terpolymer (see Acrylonitrile polymers, abs resins), is used in over 90% of POP applications. Other platable plastics include poly(phenylene ether) (see Polyethers), nylon (see Polyamides), polysulfone (see Polymers containing sulfur), polypropylene, polycarbonate, phenolics (see Pphenolic resins), polycarbonate—ABS alloys, polyesters (qv), foamed polystyrene (see Styrene plastics), and other foamed plastics (qv). 

Burning may be considered another means of oxidation. Non-burning plastics are a must in commercial constructions according to building codes and are often required for automotive, electronic, and electrical applications. From the numerous thermoplastics, only the halogen-containing polymers, polyamides, polycarbonate, poly(phenylene oxide), polysulfone, and polyimides are self-extinguishing. Even these, such as poly (vinyl chloride), may become flammable when plasticized with a flammable plasticizer. Fire control can be the key to volume use of plastics. Polyester panels, urethane foam, and PVC tarpaulins account for nearly 90% of all fire retardants consumed. Consumption in 1967... 

To improve the properties of PLA, plasticizers, special additives such as chain-extenders, polymer blends, and composites are commonly investigated. Martin and Averous (10) have studied the effects of various plasticizers on the properties of PLA. Pilla et al. (11-12) have investigated the effects of chain-extenders on the foaming properties of PLA. In addition, a vast number of studies have been conducted to enhance the properties of PLA by blending it with various polymers such as polyethylene oxide (PEO), polypropylene oxide (PPO), polyvinyl acetate, polyolefins, polystyrene, HIPS (high impact polystyrene), polyacetals, polycarbonate, and acrylonitrile butadiene styrene (ABS) (13-26). 

In 1982 the leader in structural plastics used for structural foams parts was modified polyphenylene oxide (NORYL ), accounting for almost three-quarters of all material usage. Polycarbonate held a strong second materials position, followed by ABS, with polystyrene next (5). 

Degradation prodncts from macrolitter have different properties at sea, different effects and different futnies from the original products. Eventually, they form microparticles, usually made of plastic, which constitute a veiy important aspect of the problem of marine litter. They comprise an assembly of objects of varying size, shape, color, density and chemical composition [HID 12]. With densities ranging from 0.8 to 1.4 g cm", the plastics in the sea and on the surface are mainly polyethylene (density 0.92-0.97 g cm ), polypropylenes (0.85-0.94 g cm ) and polystyrenes (from less than 0.05 in the case of foamed polystyrene to 1.00 g cm ) [LES 11]. The denser plastics such as poly (vinyl chloride) (PVC) and polycarbonates, if they do not aggregate with the organic material, tend to sink. 

Structural Foam A Purchasing and Design Guide, Bruce C. Wendle Plastics in Architecture A Guide to Acrylic and Polycarbonate, Ralph... 

Renault apart, the concept of the complete plastic front or rear end was slow to develop in volume cars. Lotus used PUR foam-filled ABS in the mid-1970s, while British Leyland used PUR and various thermoplastics in a range of small-volume sports cars. Their Triumph TR7 in 1976 was designed with bumpers in injection moulded PC, although the rear bumper was converted to glass reinforced nylon 12 when the fuel sensitivity of polycarbonate became apparent. What was to prove the main trend for the future... 

LCA for the end-of-Ufe was used for seven plastic components that are commonly used in automotive applications. The parts included the bumper cover made from polypropylene (PP), windshield washer fluid container made from polyethylene (PE), air-intake manifold made from 30% glass-filled nylon, air duct made from 20% talk-filled PP, seat cushion made from polyurethane foam, head lamp lenses made from polycarbonate, and mirror housing made from acrylonitrile butadiene styrene (Jenseit et al. 2003). 

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