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Polyvinyl chloride (pvc)
| Глоссарий по кабелям и проводным сетям |
A thermoplastic material composed of polymers of vinyl chloride, which may be rigid or elastomeric, depending on specific formulation.
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Thermoplastic, английский
- A plastic material that repeatedly softens when heated and hardens when cooled.
- A classification of resin that can be readily softened and reformed by heating and be rehardened by cooling.
- A material that will soften, flow, or distort appreciably when subject to sufficient heat and pressure, i.e., pvc or pe
- (1) capable of being repeatedly softened by heat and hardened by cooling
- A material which becomes soft and pliable when heated (without change in its other properties) and hard and rigid when cooled again.
- Термопласт, термопластичная пластмасса
- A term used to describe a plastic material that is permanently fusible, i.e. manufactured fibers that will soften at higher temperatures.
- A term used to describe a plastic material that is permanently fusible. the term as applied to manufactured fibers describes their tendency to soften at higher temperatures.
Elastomeric, английский
Said of any material having the properties of an elastomer, as a roofing material which can expand and contract without rupture.
Formulation, английский
- Формулировка
- Состав, композиция; рецептура
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Pothead, английский
- An insulator used in making a sealed joint between an underground cable and an overhead line.
- A device used to provide a weathertight seal at the end of an electrical cable, serving as an insulated egress for the conductor(s). pot life 1. the period of time during which a thermosetting plastic or rubber composition remains suitable for its intended use after mixing with a reaction-initiating agent; working life. 2. the length of time a paint material is useful after its original package is opened, or after catalyst or other ingredients are added; also called usable life, spreadable life. pot metal 1. cast iron of a quality once used for making cooking pots. 2. an alloy of copper and lead, once used for plumbing fixtures. pottery 1. any fired clayware which is produced by a clay worker. 2. the low-fired, porous, colored body ware, in contrast to white or buffcolored earthenware. potting-up 1. the transplanting of a seedling plant into a flower pot. 2. the transplanting of a mature plant from the outdoors to a large pot placed indoors, usually for decorative purposes or to protect the plant from a harsh climate during the winter.
Polymer, английский
- A material formed by the chemical combination of monomers having either the same or different chemical composition.
- A substance formed by the linkage (polymerization) of two or more simple, molecules, called monomers, to form a single larger molecule having the same elements in the same proportions as the original monomers; i.e. each monomer retains its structural identity. a polymer may be liquid or solid; solid polymers may consist of millions of repeated linked units. a polymer made from two or more similar monomers is called a copolymer; a copolymer composed of three different types of monomers is a terpolymer. natural rubber and synthetic rubbers are examples of polymers. polymers are commonly used as viscosity index improvers in multi-grade oils and tackifiers in lubricating greases.
- A compound formed by the reaction of simple molecules having functional groups that permit their combination
- One of a group of high-molecularweight resin-like, organic compounds whose structures usually can be represented by repeated small units. some polymers are elastomers, some are plastics, and some are fibers. polymer-cement concrete concrete produced by a mixture of hydraulic cement, aggregate, water, and a polymer or a monomer. polythene 749 polygonal masonry
- A high molecular weight, chain-like structure from which manufactured fibers are derived; produced by linking together molecular units called monomers.
- A macromolecule formed from a long chain of molecules called monomers; a high-molecular-weight material composed of repeating sub-units. polymers may be organic, inorganic, or organometallic, and synthetic or natural in origin. see biopolymer.
- Macromolecule composed of individual units, monomers, that bind together like building blocks.
- A large molecule composed of repeating structural units.
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