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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]
WPCs may be produced from either virgin or recycled thermoplastics including high-density polyethylene (HDPE), low-density polyethylene (LDPE), polyvinyl chloride (PVC), polypropylene (PP), acrylonitrile butadiene styrene (ABS), polystyrene (PS), and polylactic acid (PLA). PE-based WPCs are by far the most common.
The high molecular weight makes it a very tough material, but results in less efficient packing of the chains into the crystal structure as evidenced by densities of less than high-density polyethylene (for example, 0.930–0.935 g/cm 3). UHMWPE can be made through any catalyst technology, although Ziegler catalysts are most common.
It has some of the properties of a low-density polyethylene but increased gloss (useful for film), softness and flexibility. The material is generally considered non-toxic. The EVA copolymer which is based on a medium proportion of VA (approximately 4 to 30%) is referred to as thermoplastic ethylene-vinyl acetate copolymer and is a ...
The high-density polyethylene used in the construction of rigid, poly caged IBC totes is a durable thermoplastic chosen for its compatibility with many chemicals and materials often employed throughout industries, commercial applications, agriculture as well as consumer-based uses, as caged IBCs are often repurposed for aquaponic gardening.
To that, a layer of foam will be laminated. For indoor panels the standard thickness of foam is 2”, but which type 2” foam is laminated to the backer is the most important part of the pad (see foam). After these steps have been completed a 16 oz. vinyl cover is stapled over the face and onto the back of the pad.
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