一般热塑性塑料的性能,应用及鉴别（Properties, applications and identification of general thermoplastics）.docVIP

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一般热塑性塑料的性能,应用及鉴别（Properties, applications and identification of general thermoplastics）.doc

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一般热塑性塑料的性能,应用及鉴别（Properties, applications and identification of general thermoplastics）

一般热塑性塑料的性能,应用及鉴别（Properties, applications and identification of general thermoplastics） This paper contributed by lunhuifenrao. Doc document may at the WAP end of the browsing experience poor. Suggest you select TXT, or download the source file to the machine view. The performance, application and general identification of thermoplastic plastics A basic concept Plastic is a synthetic resin as the main raw material, with or without the addition of other synthetic materials and synthetic polymer materials. According to the heating behavior can be divided into thermosetting plastics and thermoplastic plastics. Thermoplastic polymer science: heated crop transition and soft, molecule is still linear or branched structures, such as PE, PVC, PS. Thermosetting plastics: after heating the polymer physical and chemical changes, a molecular network structure and curing, such as phenolic plastics (PF), epoxy resin (EP). Two, general thermoplastic properties and Applications (PP, PE, PS, PC, ABS, POM, PA) Name of material advantages and disadvantages of application The general structure of parts, chemical containers, pipes, sheets, textile materials, electrical parts, auto parts. Polypropylene (PP) 1. hardness toughness, high bending strength, anti fatigue, 1. at 0 DEG C easy to brittle stress cracking resistance of 2. poor weather resistance, aging 2. light and 3. at high temperature still maintain the mechanical properties of 4. electroplating, rust resistant and 1. low density, keep soft at 70 DEG C and 2. acid 3. organic solvent dielectric is 4. of low cost, convenient processing, rapid combustion of 2, 1 and 1. transparent adhesive printing difficult 2. selfextinguishing difference High density polyethylene (HOPE) The general structure of parts, machine cover, cover, handle, toolbox, daily necessities, turnover box. 1, after burning alcohol flavor Acrylic PMMA Material name Advantage 1. than the average tensile strength of Nylon high fatigue resistance, creep resistance, go