{"id":3535,"date":"2019-12-19T14:04:12","date_gmt":"2019-12-19T11:04:12","guid":{"rendered":"https:\/\/blog.polyurethan.ru\/?p=3535"},"modified":"2021-01-28T11:25:19","modified_gmt":"2021-01-28T08:25:19","slug":"about-polyurethane-introduction","status":"publish","type":"post","link":"https:\/\/blog.polyurethan.ru\/es\/2019\/12\/19\/about-polyurethane-introduction\/","title":{"rendered":"Un poco sobre poliuretano | Parte 1. Introductoria"},"content":{"rendered":"\n<p>Una vez\nm\u00e1s, al encontrarme con una publicaci\u00f3n poco competente en el foro, decid\u00ed\nescribir un poco sobre el poliuretano. Si alguien no lo sab\u00eda, soy subdirector\nde nuevas tecnolog\u00edas en Polyurethane LLC, Novosibirsk, mis responsabilidades\nincluyen innovaciones en el campo de equipos y tecnolog\u00edas para la producci\u00f3n,\nas\u00ed como nuevos tipos de materias primas y materiales relacionados.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/2019-02-05-309-e1576828201252-1024x1024.jpg\" alt=\"\" class=\"wp-image-3538\" width=\"256\" height=\"256\" srcset=\"https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/2019-02-05-309-e1576828201252-1024x1024.jpg?v=1617730410 1024w, https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/2019-02-05-309-e1576828201252-150x150.jpg?v=1617730410 150w, https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/2019-02-05-309-e1576828201252-300x300.jpg?v=1617730410 300w, https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/2019-02-05-309-e1576828201252-768x768.jpg?v=1617730410 768w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Primera parte, introductoria.<\/h2>\n\n\n\n<p>Qui\u00e9n y\ncu\u00e1ndo invent\u00f3 el poliuretano no escribe solo vago, porque no repetir\u00e9. Pero\nsobre lo que generalmente no escriben es que los elast\u00f3meros de los que est\u00e1n\nhechas las piezas de suspensi\u00f3n son una pieza muy peque\u00f1a del uso de\npoliuretanos.<\/p>\n\n\n\n<p>Con un alto\ngrado de probabilidad, el lector de este art\u00edculo se sienta en poliuretano\n(espuma de silla, cuero artificial), sostiene poliuretano (un mouse de tacto\nsuave) en la mano y tiene poliuretano en los pies (suela, plantillas y cuero\nartificial). Si hay buenos muebles cerca, est\u00e1 pegado con poliuretano, la mesa\nest\u00e1 barnizada con poliuretano, en la sala de producci\u00f3n el piso se vierte con\nun monolito de poliuretano, las paredes de la casa est\u00e1n aisladas con\npoliuretano y casi el 100% de las ventanas de pl\u00e1stico y los marcos de las puertas\nest\u00e1n instalados en espuma de poliuretano.<\/p>\n\n\n\n<p>Los cables\npueden aislarse con poliuretano, los muebles y los elementos decorativos de la\npared tambi\u00e9n est\u00e1n hechos de poliuretano. En un autom\u00f3vil personal, incluso un\nenemigo de poliuretano, se escribir\u00e1n de 10 a 20 kilogramos de poliuretano:\ndesde la espuma del asiento hasta el revestimiento interior, desde los\nparachoques del amortiguador hasta el volante y la perilla de la palanca de\ncambios. Y a\u00fan no he mencionado esto sobre juntas de filtro de poliuretano,\nselladores de poliuretano de caja de cambios y docenas de otros elementos.<\/p>\n\n\n\n<p>Por lo\ntanto, cuando un blogger escribe, &#8220;el poliuretano es rojo y violeta, el\nrojo es peor&#8221;, esto obviamente no tiene sentido. Poliuretano es el nombre\nqu\u00edmico general para un grupo de pol\u00edmeros en el que solo la presencia de\ngrupos isocianato en las cadenas &nbsp;es\ncom\u00fan. Es como &#8220;metal&#8221;, un nombre muy com\u00fan, que esconde mercurio\nl\u00edquido y cromo duro, acero de aleaci\u00f3n fuerte y silumin fr\u00e1gil.<\/p>\n\n\n\n<p>De hecho,\nlos poliuretanos, incluso a nivel qu\u00edmico, tienen millones de diferencias,\ndesde diversas variaciones de grupos isocianato e hidroxilo hasta la naturaleza\ncopolim\u00e9rica de las &#8220;unidades de cadena&#8221; con policaprolactanos,\npolicarbonatos, y Dios sabe qu\u00e9 m\u00e1s. Adem\u00e1s, un n\u00famero incontable de\nvariaciones en la longitud de las cadenas, su organizaci\u00f3n, estructura\ntridimensional, reticulaci\u00f3n, etc.<\/p>\n\n\n\n<p>Naturalmente,\ntoda esta variedad tiene diferentes propiedades f\u00edsicas y mec\u00e1nicas, es decir,\ncon la voluntad, el deseo, la paciencia y las finanzas, podemos\n&#8220;programar&#8221; las propiedades del material: hacerlo m\u00e1s duro, m\u00e1s\nresistente, soportar m\u00e1s cargas c\u00edclicas, temperaturas m\u00e1s bajas, etc. . Dentro\nde l\u00edmites razonables, por supuesto: no hay magia, y no hay un\n&#8220;poliuretano ideal&#8221; adecuado para todas las ocasiones: por ejemplo,\nal aumentar la dureza, perdemos autom\u00e1ticamente el alargamiento a la rotura,\naumentando la resistencia a las bajas temperaturas, perdemos resistencia a la\ndeformaci\u00f3n permanente.<\/p>\n\n\n\n<p>Pero puede\nencontrar un compromiso: el poliuretano &#8220;adecuado&#8221; para una tarea\nespec\u00edfica. Por lo tanto, personas especiales en departamentos especiales de\nfabricantes de componentes para poliuretanos piensan cuidadosamente d\u00f3nde usar\nel producto obtenido en su laboratorio, y los fabricantes normales de productos\nde poliuretano discuten peri\u00f3dicamente su lista de deseos.<\/p>\n\n\n\n<p>Como\nresultado, <\/p>\n\n\n\n<p>el\nfabricante de zapatos recibe poliuretano barato con baja resistencia a la\ntracci\u00f3n, pero alta resistencia a cargas y fricciones alternas<\/p>\n\n\n\n<p>el artista de maquillaje de pel\u00edculas de terror recibe un poliuretano inofensivo, r\u00e1pidamente colocado en una capa delgada el escultor obtiene un poliuretano suave y f\u00e1cil de procesar, pero fr\u00e1gil. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/DSC_1127-e1576897273721-1024x589.jpg\" alt=\"\" class=\"wp-image-3571\" width=\"512\" height=\"295\" srcset=\"https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/DSC_1127-e1576897273721-1024x589.jpg?v=1617730409 1024w, https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/DSC_1127-e1576897273721-300x172.jpg?v=1617730409 300w, https:\/\/blog.polyurethan.ru\/wp-content\/uploads\/2019\/12\/DSC_1127-e1576897273721-768x442.jpg?v=1617730409 768w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure><\/div>\n\n\n\n<p>Y los\nentusiastas&nbsp; inexpertos toman\npoliuretano, dise\u00f1ado para productos sexuales o aislamiento de cables, y\narrojan bloques silenciosos, con un resultado comprensible. El bloqueo\nsilencioso resultante es inofensivo en contacto con las membranas mucosas o\ntiene una alta resistencia a la ruptura el\u00e9ctrica, pero no resuelve muy bien las\ncarreteras en mal estado.<\/p>\n\n\n\n<p>Y ahora, un\npoco no sobre el poliuretano, sino tambi\u00e9n con respecto a las guerras de los\nexpertos en sof\u00e1s. El caucho es un concepto igualmente heterog\u00e9neo. Tambi\u00e9n es\nmuy diferente: de los juguetes de gel antiestr\u00e9s (s\u00ed, esto es caucho, es decir,\nuna mezcla vulcanizada a base de caucho natural o artificial) hasta una ebonita\nde una pipa para fumar (la ebonita tambi\u00e9n es goma). Adem\u00e1s, una nube de\naditivos se introduce regularmente en casi cualquier caucho, incluidos los\ninertes m\u00e1s baratos, por lo que incluso una marca de una planta (especialmente\nchina o rusa) puede dar resultados diferentes independientemente del\nprocesador.<\/p>\n\n\n\n<p>Sin\nembargo, hay personas que afirman que &#8220;el caucho es mejor que el\npoliuretano&#8221;. Se\u00f1ores, me he encontrado con piezas de autom\u00f3viles de goma,\nque est\u00e1n divididas por una u\u00f1a y agrietadas por un pu\u00f1o. Y, por otro lado, hay\ngomas con tasas muy altas de resistencia y deformaci\u00f3n residual, que son casi\nresistentes a los \u00e1cidos fuertes y a toda la materia org\u00e1nica. Pero estos s\u00faper\ncauchos pierden una de las principales cualidades: el bajo costo y a\u00fan son\ninferiores a algunas marcas de poliuretano.<\/p>\n\n\n\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link has-background has-luminous-vivid-orange-background-color\" href=\"https:\/\/blog.polyurethan.ru\/2019\/12\/21\/about-polyurethane-elastomers\/\">  <strong>Leer m\u00e1s: Un poco sobre poliuretano Parte 2<\/strong> <\/a><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Una vez m\u00e1s, al encontrarme con una publicaci\u00f3n poco competente en el foro, decid\u00ed escribir un poco sobre el poliuretano. Si alguien no lo sab\u00eda, soy subdirector de nuevas tecnolog\u00edas en Polyurethane LLC, Novosibirsk&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":2678,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-3535","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-about-polyurethane-and-other-materials"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"es","enabled_languages":["ru","en","es"],"languages":{"ru":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":true}}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polyurethane blog<\/title>\n<meta name=\"description\" content=\"Una vez m\u00e1s, al encontrarme con una publicaci\u00f3n poco competente en el foro, decid\u00ed escribir un poco sobre el poliuretano. 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