[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.ovesny.cz\/parkesin-neprorazil-bakelit-ano\/#Article","mainEntityOfPage":"https:\/\/www.ovesny.cz\/parkesin-neprorazil-bakelit-ano\/","headline":"Parkesin neprorazil, bakelit ano","name":"Parkesin neprorazil, bakelit ano","description":"V\u00edte, co je parkesin? Sice to zn\u00ed jako n\u011bjak\u00e1 nemoc nervov\u00e9ho \u00fastroj\u00ed, ale je to oby\u010dejn\u00fd plast. Vlastn\u011b by se sp\u00ed\u0161e m\u011blo \u0159\u00edci, \u017ee neoby\u010dejn\u00fd. Byl toti\u017e \u00fapln\u011b prvn\u00edm. Sv\u00e9 zvl\u00e1\u0161tn\u00ed jm\u00e9no dostal po sv\u00e9m vyn\u00e1lezci, kter\u00fdm byl Angli\u010dan Alexander Parkes. V roce 1955 ho vynalezl a o sedm let pozd\u011bji ho p\u0159edstavil na Lond\u00fdnsk\u00e9 […]","datePublished":"2018-01-05","dateModified":"2023-04-30","author":{"@type":"Person","@id":"https:\/\/www.ovesny.cz\/author\/#Person","name":"","url":"https:\/\/www.ovesny.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/33549a3bd69022b5544ec751c6f690d75868252394a5ec007d9ed3f2c30f7874?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/33549a3bd69022b5544ec751c6f690d75868252394a5ec007d9ed3f2c30f7874?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"ovesny.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.ovesny.cz\/wp-content\/uploads\/img_a309285_w1950_t1520243287.png","url":"https:\/\/www.ovesny.cz\/wp-content\/uploads\/img_a309285_w1950_t1520243287.png","height":0,"width":0},"url":"https:\/\/www.ovesny.cz\/parkesin-neprorazil-bakelit-ano\/","wordCount":400,"articleBody":" V\u00edte, co je parkesin? Sice to zn\u00ed jako n\u011bjak\u00e1 nemoc nervov\u00e9ho \u00fastroj\u00ed, ale je to oby\u010dejn\u00fd plast. Vlastn\u011b by se sp\u00ed\u0161e m\u011blo \u0159\u00edci, \u017ee neoby\u010dejn\u00fd. Byl toti\u017e \u00fapln\u011b prvn\u00edm. Sv\u00e9 zvl\u00e1\u0161tn\u00ed jm\u00e9no dostal po sv\u00e9m vyn\u00e1lezci, kter\u00fdm byl Angli\u010dan Alexander Parkes. V roce 1955 ho vynalezl a o sedm let pozd\u011bji ho p\u0159edstavil na Lond\u00fdnsk\u00e9 v\u00fdstav\u011b. \u00b7 Bylo by zaj\u00edmav\u00e9 se dozv\u011bd\u011bt, jestli \u010dekal \u00fasp\u011bch nebo se ob\u00e1val, \u017ee jeho vyn\u00e1lez z\u016fstane nepochopen. \u00b7 Pokud doufal alespo\u0148 v mal\u00fd \u00fasp\u011bch, byl ur\u010dit\u011b velice mile p\u0159ekvapen. \u00b7 Laick\u00e1 i odborn\u00e1 ve\u0159ejnost byla doslova ohromena. Um\u011bl\u00e1 hmota Alexandra Parkese m\u011bla p\u0159esn\u011b ty vlastnosti, kter\u00e9 jsou od takov\u00e9ho materi\u00e1lu o\u010dek\u00e1v\u00e1ny.Parkesin byl tvrd\u00fd jako rohovina a ohebn\u00fd jako k\u016f\u017ee. V\u011bci, kter\u00e9 se z n\u011bho mohly vyr\u00e1b\u011bt, mohly b\u00fdt – tvarov\u00e1ny – lisov\u00e1ny – odl\u00e9v\u00e1ny. Parkesin sice nakonec d\u00edru do sv\u011bta neud\u011blal, ale ur\u010dit\u011b to byl prvn\u00ed krok na cest\u011b za plasty.  Dnes se bakelitov\u00e9 v\u011bci sb\u00edraj\u00ed O p\u016fl stolet\u00ed pozd\u011bji p\u0159i\u0161el dal\u0161\u00ed mu\u017e a tak\u00e9 se pokusil nahradit n\u011bkter\u00e9 materi\u00e1ly plastem. Byl to Belgi\u010dan Leo Baekeland. N\u00e1zev jeho v\u00fdrobku u\u017e bude ur\u010dit\u011b zn\u00e1m\u011bj\u0161\u00ed. \u00b7 Jeho bakelit m\u011bl b\u00fdt levn\u00fdm a lehk\u00fdm materi\u00e1lem na v\u00fdrobu spot\u0159ebn\u00edho zbo\u017e\u00ed. Belgick\u00fd chemik Baekeland tak dlouho experimentoval s fenolem a formaldehydem, a\u017e se mu poda\u0159ilo vzbudit reakci, ze kter\u00e9 vy\u0161el tuh\u00fd kondenz\u00e1t.  Na\u0161t\u011bst\u00ed si uv\u011bdomil, \u017ee by mohl b\u00fdt jeho vyn\u00e1lez opravdu p\u0159evratn\u00fdm a s\u00e1m zalo\u017eil spole\u010dnost Bakelite GmbH. Jeho v\u00fdrobek m\u011bl opravdu dlouhou dobu v\u00fdsadn\u00ed postaven\u00ed mezi t\u011bmi ostatn\u00edmi. A p\u0159e\u017eil do dne\u0161n\u00edch dob. V sou\u010dasnosti ho m\u016f\u017eeme naj\u00edt snad v\u0161ude, kde je pot\u0159eba, aby v\u011bci vydr\u017eely i vysok\u00e9 teploty. – V\u00fdrobky z bakelitu jsou ohnivzdorn\u00e9 a chemicky odoln\u00e9. – To byla a je hlavn\u00ed deviza tohoto v\u00fdrobku, kter\u00fd dostal jm\u00e9no sv\u00e9ho stvo\u0159itele. Dnes se staly star\u00e9 bakelitov\u00e9 v\u011bci p\u0159edm\u011btem sb\u011bratelsk\u00fdch v\u00e1\u0161n\u00ed.                                                                                                                                                                                                                                                                                                                                                                                         3.7\/5 - (6 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Parkesin neprorazil, bakelit ano","item":"https:\/\/www.ovesny.cz\/parkesin-neprorazil-bakelit-ano\/#breadcrumbitem"}]}]