The nylon family of plastics are identified by the number of carbon atoms in the monomers. Where two monomers are involved, the polymer will carry two umbers (e.g.nylon 66). Crystalline nylons have hi

ABS plastic is an easily machined, tough, low cost rigid thermoplastic plastic with high impact strength, ideal for turning, drilling, milling,sawing, die-cutting, shearing.

Polystyrene is one of the most widely used plastics, and is an aromatic polymer made from the monomer styrene, a liquid hydrocarbon that is manufactured from petroleum by the chemical industry. In che

Polyvinyl chloride if produced by polymerization of the monomer vinyl chloride (VCM), as shown. About 80% of production involves suspension polymerizations. Emulsion polymerization accounts for about

Polypropylene(PP) (Fig.1.10) is a thermoplastic prlymer used in a wide variety of a pplications including packaging and labeling, textiles (e.g.,ropes, thermal underwear and carpets, stationery plasti

Polyethylene is a thermoplastic polymer consisting of long hydrocarbon chains. The term polyethylene describes a huge family of resins obtained by polymerizing ethylene gas(Fig1.9) CH2=CH2, and it is

123 Thermoplastics and Thermosetting Polymers热塑性塑料与热固性塑料 A thermoplastic polymer is in a solid (glassy) state at room temperature, but flows if heated above its glass transition temperature of about

​Most plastics contain other organic or inorganic compounds blended in. The amount of additives ranges from zero percentage for polymers used to wrap foods to more than 50% for certain electronic appl

Weld lines, also called knit lines, are formed when two melt fronts converge and join forming a thin fine line in the part. This can be seen in untextured parts and in highly polished surfaces. The