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Plastic is not sold as a pure unadulterated substance, but is instead mixed with various chemicals and other materials, which are collectively known as additives. These are added during the compounding stage and include substances such as stabilizers , plasticizers and dyes , which are intended to improve the lifespan, workability or appearance ...
It is a colorless, volatile liquid although commercial samples can be yellow due to impurities. It has a pungent odor of garlic or onions. [4] Its molecular structure consists of a vinyl group (−CH=CH 2) linked to a nitrile (−C≡N). It is an important monomer for the manufacture of useful plastics such as polyacrylonitrile.
Acrylic resin is a common ingredient in latex paint (UK: "emulsion paint"). Latex paints with a greater proportion of acrylic resin offer better stain protection, greater water resistance, better adhesion, greater resistance to cracking and blistering, and resistance to alkali cleaners compared to those with vinyl. [2]
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 ...
When pure, the dielectric constant is in the range 2.2 to 2.4 depending on the density [21] and the loss tangent is very low, making it a good dielectric for building capacitors. For the same reason it is commonly used as the insulation material for high-frequency coaxial and twisted pair cables.
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]
Scientists potentially uncovered a glueball particle, an enigmatic entity believed to be made entirely of the strong nuclear force's gluons.
The presence of chloride groups gives the polymer very different properties from the structurally related material polyethylene. [17] At 1.4 g/cm 3, PVC's density is also higher than structurally related plastics such as polyethylene (0.88–0.96 g/cm 3) and polymethylmethacrylate (1.18 g/cm 3).