A Kayak made out of clear plastic so you can see through it into the water.
They are lightier and cheaper than regular sunglasses because they are made from polycarbonates.
William F. Christopher has written: 'Polycarbonates' -- subject(s): Polycarbonates 'Management for the 1980's' -- subject(s): Industrial management 'Holistic management' -- subject(s): OverDrive, Business, Management, Nonfiction, Science 'The 16-point strategy for productivity and total quality' -- subject(s): Industrial management, Industrial productivity, Quality control 'Productivity Measurement Handbook'
S. K. Ray has written: 'Three-dimensional measurements of fatigue crack closure' -- subject(s): Polycarbonates, Materials, Fatigue, Fracture mechanics
Electrician's hard hats are usually made of plastic. Depending on the work environment, hard hats can be made of durable polystyrene or polycarbonates, or even more durably from fiberglass over metal. Electrician's gear is designed to be electrically non-conductive.
Electrician's hard hats are usually made of plastic. Depending on the work environment, hard hats can be made of durable polystyrene or polycarbonates, or even more durably from fiberglass over metal. Electrician's gear is designed to be electrically non-conductive.
It really hasn't changed that much. From solid wood, many instruments are now made partially in laminants. Peg tuners became friction tuners and now many use geared tuners. And the strings are typically made of polycarbonates rather than gut.
Alkenes are commonly used in the production of plastics, such as polyethylene and polypropylene. They are also used in the synthesis of various organic compounds through different chemical reactions like polymerization and hydrohalogenation. Additionally, alkenes can be used as starting materials in the manufacture of detergents, solvents, and synthetic rubbers.
Polycarbonate/Acrylonitrile Butadiene Styrene (PC/ABS) - A blend of PC and ABS that creates a stronger plastic. Used in car interior and exterior parts, and mobile phone bodies.
Ralph Montella is not a widely recognized author, and there is limited information available about any works he may have written. It's possible he has written and self-published books, articles, or other content, but without more specific details, it is difficult to provide a comprehensive answer.
This is a big question and a major technical issue for materials scientists and engineers. The short answer is: there are no truly scratch-proof plastics. Plastic is intrinsically soft material, because it is carbon/petroleum-based. Most minerals (rocks, glass, etc) will easily scratch plastic because they are made of metal oxides, which are intrinsically hard materials consisting only of metal-oxygen bonds. When it comes to scratch resistance, a harder material can always scratch a softer material. So no matter what plastic you have, there will always be a harder material out there that can scratch it, such as diamond, alumina, or zirconia. Some plastics are more scratch-resistant than others, however. Examples of scratch-resistant plastics include polycarbonates, CR-39, polyurethanes, and PTFE. Any plastic can be made more scratch-resistant by applying a scratch-resistant coating, which can be composed of any number of highly engineered silicone resins, epoxies, acrylates, etc which can be thermally or UV-cured. There are hundreds of brand names for scratch-resistant coatings that advertise varying levels of abrasion resistance; many use a steel wool test to define just how scratch resistant the cured coating is. Hope this is along the lines of what you wanted to know.
poly polyacrylamide polyacrylamides polyacrylonitrile polyacrylonitriles polyalcohol polyalcohols polyamide polyamides polyamine polyamines polyandries polyandrous polyandry polyantha polyanthas polyanthi polyanthus polyanthuses polyatomic polybrid polybrids polybutadiene polybutadienes polycarbonate polycarbonates polycentric polycentrism polycentrisms polychaete polychaetes polychotomies polychotomous polychotomy polychromatic polychromatophilia polychromatophilias polychromatophilic polychrome polychromed polychromes polychromies polychroming polychromy polycistronic polyclinic polyclinics polyclonal polycondensation polycondensations polycot polycots polycrystal polycrystalline polycrystals polycyclic polycystic polycythemia polycythemias polycythemic polydactyl polydactylies polydactyly polydipsia polydipsias polydipsic polydisperse polydispersities polydispersity polyelectrolyte polyelectrolytes polyembryonic polyembryonies polyembryony polyene polyenes polyenic polyester polyesterification polyesterifications polyesters polyestrous polyethylene polyethylenes polygala polygalas polygamic polygamies polygamist polygamists polygamize polygamized polygamizes polygamizing polygamous polygamy polygene polygenes polygeneses polygenesis polygenetic polygenic polyglot polyglotism polyglotisms polyglots polyglottism polyglottisms polygon polygonal polygonally polygonies polygons polygonum polygonums polygony polygraph polygrapher polygraphers polygraphic polygraphist polygraphists polygraphs polygynies polygynous polygyny polyhedra polyhedral polyhedron polyhedrons polyhedroses polyhedrosis polyhistor polyhistoric polyhistors polyhydroxy polylysine polylysines polymath polymathic polymathies polymaths polymathy polymer polymerase polymerases polymeric polymerisation polymerisations polymerise polymerised polymerises polymerising polymerism polymerisms polymerization polymerizations polymerize polymerized polymerizes polymerizing polymers polymorph polymorphic polymorphically polymorphism polymorphisms polymorphonuclear polymorphonuclears polymorphous polymorphously polymorphs polymyxin polymyxins polyneuritides polyneuritis polyneuritises polynomial polynomials polynuclear polynucleotide polynucleotides polynya polynyas polynyi polyolefin polyolefins polyoma polyomas polyonymous polyp polyparies polypary polypeptide polypeptides polypeptidic polypetalous polyphagia polyphagias polyphagies polyphagous polyphagy polyphase polyphasic polyphenol polyphenolic polyphenols polyphiloprogenitive polyphone polyphones polyphonic polyphonically polyphonies polyphonous polyphonously polyphony polyphyletic polyphyletically polypi polypide polypides polyploid polyploidies polyploids polyploidy polypnea polypneas polypod polypodies polypods polypody polypoid polypore polypores polypous polypropylene polypropylenes polyps polyptych polyptychs polypus polypuses polyrhythm polyrhythmic polyrhythmically polyrhythms polyribonucleotide polyribonucleotides polyribosomal polyribosome polyribosomes polys polysaccharide polysaccharides polysemies polysemous polysemy polysome polysomes polysorbate polysorbates polystichous polystyrene polystyrenes polysulfide polysulfides polysyllabic polysyllabically polysyllable polysyllables polysynaptic polysynaptically polysyndeton polysyndetons polytechnic polytechnics polytene polytenies polyteny polytheism polytheisms polytheist polytheistic polytheistical polytheists polythene polythenes polytonal polytonalities polytonality polytonally polytype polytypes polytypic polyunsaturated polyurethane polyurethanes polyuria polyurias polyuric polyvalence polyvalences polyvalent polyvinyl polywater polywaters polyzoan polyzoans polyzoic
Masterbatch (MB) is a solid or liquid additive for plastic used for coloring plastics (color masterbatch) or imparting other properties to plastics (additive masterbatch). Masterbatch is a concentrated mixture of pigments and/or additives encapsulated during a heat process into a carrier resin which is then cooled and cut into a granular shape. Masterbatch allows the processor to colour raw polymer economically during the plastics manufacturing process. The alternatives to using masterbatches are buying a fully compounded material (which may be more expensive and less open to e.g. color variability of the product), or compounding from raw materials on site (which is prone to issues with achieving full dispersion of the colorants and additives, and prone to preparing more material than what is used for the production run). In comparison with pure pigments, masterbatches require more storage space and their lead times are longer. Another disadvantage is additional exposure of heat ("heat history") to both the carrier and the additive; this may be important e.g. for marginally thermally stable pigments.[1] As masterbatches are already premixed compositions, their use alleviates the issues with the additive or colorant clumping or insufficient dispersion. The concentration of the additive in the masterbatch is much higher than in the end-use polymer, but the additive is already properly dispersed in the host resin. In a way their use is similar to uses of ferroalloys for adding alloying elements to steels. The use of masterbatches allows the factory to keep stock of fewer grades of the polymer, and to buy cheaper natural polymer in bulk. The masterbatches can be fairly highly concentrated (in comparison with the target composition), with high "let-down ratios"; e.g. one 25 kg bag can be used for a tonne of natural polymer. The relatively dilute nature of masterbatches (in comparison with the raw additives) allows higher accuracy in dosing small amounts of expensive components. The compact nature of the grains of solid masterbatches eliminates problems with dust, otherwise inherent for fine-grained solid additives. Solid masterbatches are also solvent-free, therefore they tend to have longer shelf life as the solvent won't evaporate over time. The masterbatch usually contains 40-65% of the additive, but the range can be as wide as 15-80% in extreme cases.[1] The carrier material of the masterbatch can be based on a wax (universal carrier) or on a specific polymer, identical or compatible with the natural polymer used (polymer-specific). E.g. EVA or LDPE can be used as carriers for polyolefins and nylon, polystyrene can be used for ABS, SAN, and sometimes polycarbonates. When a carrier different than the base plastic is used, the carrier material may modify the resulting plastic's properties; where this could be important, the carrier resin has to be specified. The usual ratio of masterbatch to the base resin is 1 to 5 percent. Several masterbatches (color and various additives) can be used together.[1] The carrier can also double as a plasticizer (common for liquid masterbatches) or a processing aid. The machines are usually fed with premixed granules of the host polymer and the masterbatch. The final mixing then gets done in the screw and extrusion part of the machine. This is sometimes prone to adverse effects, e.g. separation of the masterbatch and the base material in the machine's hopper. The masterbatch can be also added directly to the machine's screw, as a free-flowing solid or in case of a liquid masterbatch by e.g. a peristaltic pump. Such use of liquid masterbatches allows highly accurate dosing and quick change of color between machine runs.[2][3] Masterbatches can be used in most processes, except rotational molding and Plastisol and other liquid resin systems. (fromWikipedia) For More info, pls visit httitanium.com.