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HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]
Large plastic tub being used as an ice chest. Many tubs are made of formed thermoplastics such as PET polyester, polystyrene, or polypropylene. Processes of creating tubs are either thermoforming or injection moulding. Tubs can also be formed of paperboard, molded pulp, and aluminum. Some tubs have special microwave features such as susceptors [1]
Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene.Also known as high-modulus polyethylene (HMPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. [1]
ASA is compatible with some other plastics, namely polyvinyl chloride and polycarbonate. ASA-PVC compounds are in use. [4] ASA can be processed by extrusion and coextrusion, thermoforming, injection molding, extrusion blow molding, and structural foam molding. [4] ASA is mildly hygroscopic; drying may be necessary before processing. [4]
Thick-gauge thermoforming includes parts as diverse as vehicle door and dash panels, refrigerator liners, utility vehicle beds and plastic pallets. Most thermoforming companies recycle their scrap and waste plastic, either by compressing in a baling machine or by feeding into a granulator (grinder) and producing ground flake, for sale to ...
POM is a strong and hard plastic, about as strong as plastics can be, and therefore competes with e.g. epoxy resins and polycarbonates. The price of POM is about the same as that of epoxy. There are two main differences between POM and epoxy resins: epoxy is a two-component resin that can be cast, and adheres to everything it touches,
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