Thermoplastics metals

Thermoplastics metal wires Chemical resistance Antistatic Electrical resistance EMF shielding Flexibility Wear resistance Energy absorption Thermal stability... 

PVC, polyolefin thermoplastics. Metal salts are added to plastics for one or more of the following reasons ... 

SLS was developed and patented by C. Deckard at the University of Texas, Austin in the mid-1980s [99]. As shown in Fig. 80, a thermoplastic, metal, or ceramic powder is spread in a layer of typical 0.1-0.3 mm thickness by a roller or wiper over the surface of a building platform. 

The described thermoplastic/metal hybrid materials have a high potential for being employed in the production of complex electronic components with very high demands on the electrical conductivity. 

Typical Use Automotive body parts - metals SMC plastics. Typical Use Autcxnotive thermosetting thermoplastics, metals. ... 

Typical Use Automotive thermosetting thermoplastics, metals. Typical Use Metals, concrete, masonry, GRP wood. ... 

Ja.cketingMa.teria.ls. Besides the metallic protective coverings (based on aluminum, copper and copper alloys, lead, steel, and zinc), the most popular jacketing materials are based on polymeric materials that can be either thermoplastic (with limited high temperature use) or thermosetting. 

EPDM-Derived Ionomers. Another type of ionomer containing sulfonate, as opposed to carboxyl anions, has been obtained by sulfonating ethylene—propjlene—diene (EPDM) mbbers (59,60). Due to the strength of the cross-link, these polymers are not inherently melt-processible, but the addition of other metal salts such as zinc stearate introduces thermoplastic behavior (61,62). These interesting polymers are classified as thermoplastic elastomers (see ELASTOLffiRS,SYNTHETIC-THERMOPLASTICELASTOLffiRS). 

With the growth in thermoplastic materials replacing more traditional materials such as glass, wood, paper, and metal, the growth rate for... 

Reinforced Thermoplastic Sheet. This process uses precombined sheets of thermoplastic resin and glass fiber reinforcement, cut into blanks to fit the weight and size requirements of the part to be molded. The blanks, preheated to a specified temperature, are loaded into the metal mold and the material flows under mol ding pressure to fiU the mold. The mold is kept closed under pressure until the temperature of the part has been reduced, the resin solidified, and demolding is possible. Cycle time, as with thermosetting resins, depends on the thickness of the part and the heat distortion temperature of the resin. Mol ding pressures are similar to SMC, 10—21 MPa (1500—3000 psi), depending on the size and complexity of the part. 

Rotational molding is used to form large shells of thermoplastic resin and chopped strands for such appHcations as agricultural tanks and fertilizer hoppers. The resin and chopped glass are placed in the metal mold that is then rotated in an oven where the thermoplastic resin melts and deposits the fiber on the metal surface. When cooled, the mold is opened and the part is removed. 

The diversity of release products and the wide range of release problems make classification difficult. One approach is by product form, with subdivisions such as emulsions, films, powders, reactive or iaert sprays, reactive coatings, and so on. Another approach is by appHcation, eg, metal casting, mbber processiag, thermoplastic iajection mol ding, and food preparation and packagiag. 

High Density Polyethylene. High density polyethylene (HDPE), 0.94—0.97 g/cm, is a thermoplastic prepared commercially by two catalytic methods. In one, coordination catalysts are prepared from an aluminum alkyl and titanium tetrachloride in heptane. The other method uses metal oxide catalysts supported on a carrier (see Catalysis). 

Thermoplastic Resins," in EngineeredMaterials Handbook Engineering Plasties, Vol. 2, ASM International, Metals Park, Ohio, 1988, pp. 98—221. 

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