High-density polyethylene foam resins

High-Density Polyethylene Foams These foams are defined by the specific gravity (ca. 0.96 g/cc) and melt index of the basic resin. They have been used extensively in the U.S. and Europe, particularly for materials-handling applications, such as boxes, crates, and pallets because, imtil recently, they were much cheaper than polypropylene (13). 

Polyethylene. There are three basic types of polyethylene loams of importance (I) extruded loams from low density polyethylene ILDPE) f2) foam products from high density polyethylene (HDPE) and ( ) cross-linked polyethylene foams. Other polyolehn foams have an insignificant volume as compared to polyethylene foams and most or their uses are as resin extenders. 

This technique has been used to measure the specific heat of polyamide 6, polypropylene, polymethylene methacrylate, rigid polyvinyl chloride and cellular polyurethane foam, high-density polyethylene, low-density polyethylene and polystyrene [48], epoxy resins [73], polypropylene [74], polymethyl methacrylate [75], high-density polyethylene, low-density polyethylene, polypropylene and polystyrene [77], and polytetrafluoroethylene [76],... 

Products made from CPEs do not fog at higher use temperatures, as do PVCs, and can be made completely flame retardant. However, they exhibit a chemical instability that is similar to PVC s. They may be used as primary compounding materials or be blended with a PVC, high- or low-density polyethylenes, and other resins to add their benefits. Extruded sheet, supported by foams, is used in certain automobile dashboards and upholstery and door liners. 

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