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The PLASTIC ATLAS 2019 is jointly published by Heinrich Böll Foundation, Berlin, Germany, and Break Free From Plastic Executive editors: Lili Fuhr, Heinrich Böll Foundation Matthew Franklin, Break Free From Plastic Managing editor: Kai Schächtele Art direction and infographics: Janine Sack, Sabine Hecher, Lena Appenzeller Project management ...
The rest was pre-consumer waste from resin production and manufacturing of plastic products (e.g. materials rejected due to unsuitable color, hardness, or processing characteristics). [ 2 ] The Ocean Conservancy reported that China, Indonesia, Philippines, Thailand, and Vietnam dump more plastic into the sea than all other countries combined ...
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]
Medium-density polyethylene (MDPE) is a type of polyethylene defined by a density range of 0.926–0.940 g/cm 3. [1] It is less dense than HDPE, which is more common.. MDPE can be produced by chromium/silica catalysts, Ziegler-Natta catalysts or metallocene catalysts.
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]
When extruded into a filament, ABS plastic is a common material used in 3D printers, [26] as it is cheap, strong, has high stability and can be post-processed in various ways (sanding, painting, gluing, filling and chemical smoothing). When being used in a 3D printer, ABS is known to warp due to shrinkage that occurs while cooling during the ...
Polyetherimide (PEI; branded as Ultem [1]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK.When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
By mixing these different elements the diversity of high-performance plastics is created with their different characteristics. [ 2 ] In practice a maximum temperature resistance (about 260 °C) can be obtained with fluoropolymers (polymers, in which the hydrogen atoms of the hydrocarbons have been replaced by fluorine atoms). [ 7 ]