PP Wire Insulation Runs Faster Than Ever.A new polypropylene polypropylene (pŏl'ēprō`pəlēn), plastic noted for its light weight, being less dense than water; it is a polymer of propylene. It resists moisture, oils, and solvents. wire-insulation compound reportedly can be extruded much faster than competitive products and still avoid centering problems that typically restrict line speeds when coating PP insulation on thin-gauge copper wire. Petrothene PP 4173-WF from Equistar Chemicals, LP, Houston, is said to extrude extrude /ex·trude/ (ek-strldbomacd´) 1. to force out, or to occupy a position distal to that normally occupied. 2. in dentistry, to occupy a position occlusal to that normally occupied. at lower head pressure than competitive products, while providing low shrink-back. The 2.5 MFR MFR, n See myofascial release. compound contains an antioxidant antioxidant, substance that prevents or slows the breakdown of another substance by oxygen. Synthetic and natural antioxidants are used to slow the deterioration of gasoline and rubber, and such antioxidants as vitamin C (ascorbic acid), butylated hydroxytoluene that reportedly ensures processing stability and excellent long-term aging. |
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