{"id":2570,"date":"2015-04-28T23:05:30","date_gmt":"2015-04-28T20:05:30","guid":{"rendered":"http:\/\/www.esfaplastik.com\/?p=2570"},"modified":"2015-04-29T17:39:03","modified_gmt":"2015-04-29T14:39:03","slug":"hdpe-yuksek-yogunluklu-polietilen","status":"publish","type":"post","link":"https:\/\/esfaplastik.com\/index.php\/hdpe-yuksek-yogunluklu-polietilen\/","title":{"rendered":"HDPE Y\u00fcksek Yo\u011funluklu Polietilen"},"content":{"rendered":"<p><a href=\"https:\/\/esfaplastik.com\/index.php\/hdpe-yuksek-yogunluklu-polietilen\/\" title=\"HDPE Y\u00fcksek Yo\u011funluklu Polietilen\" target=\"_blank\">HDPE<\/a>, petrolden elde edilen, y\u00fcksek yo\u011funluklu polietilen malzemedir. \u0130smi \u0130ngilizce kar\u015f\u0131l\u0131\u011f\u0131 olan &#8220;High Density Polyetylene&#8221; kelimelerinin k\u0131saltmas\u0131ndan gelmektedir. Sanayi ve imalat sekt\u00f6r\u00fcnde genelde bu isim kullan\u0131lmaktad\u0131r. Yakla\u015f\u0131k olarak, 1.75 kg. petrolden , 1 kg. HDPE hammadde elde edilir.<\/p>\n<p><strong>Elde Edilmesi<\/strong><\/p>\n<p><a href=\"https:\/\/esfaplastik.com\/index.php\/hdpe-yuksek-yogunluklu-polietilen\/\" title=\"HDPE Y\u00fcksek Yo\u011funluklu Polietilen\" target=\"_blank\">HDPE<\/a> g\u00fcn\u00fcm\u00fczde birka\u00e7 y\u00f6ntemle elde edilebilmektedir.<\/p>\n<p>Radikal polimerizasyon y\u00f6nteminde, y\u00fcksek bas\u0131n\u00e7 uygulan\u0131r.<br \/>\nKoordinasyon polimerizasyonunda, al\u00e7ak bas\u0131n\u00e7 ve 50-75 \u00b0C s\u0131cakl\u0131kta katalitik sentez yap\u0131l\u0131r.<br \/>\nKataliz\u00f6r olarak heptanda \u00e7\u00f6z\u00fcnm\u00fc\u015f, titan tetraklorid ve al\u00fcminyum alkil kullan\u0131l\u0131r. Polimerizasyon \u0131s\u0131s\u0131 so\u011futularak giderilir. Ele ge\u00e7en polimer formu toz veya gran\u00fcld\u00fcr. S\u0131v\u0131 ortamdan s\u00fcz\u00fclerek al\u0131nd\u0131ktan sonra kurutularak ambalajlan\u0131r.<\/p>\n<p>HDPE sentezinde di\u011fer yol olan, &#8220;metal oksit kataliz\u00f6rl\u00fc polimerizasyon&#8221;da etilen gaz\u0131 parafinde \u00e7\u00f6z\u00fcl\u00fcr, 60-200 \u00b0C s\u0131cakl\u0131kta, 35 atm. bas\u0131n\u00e7 alt\u0131nda, belirli bir s\u00fcrede i\u015flem tamamlan\u0131r. So\u011futma ve \u00e7\u00f6z\u00fcc\u00fc buharla\u015ft\u0131r\u0131lmas\u0131ndan sonra \u00fcr\u00fcn elde edilir.<\/p>\n<p>&#8220;Do\u011frusal (lineer] polietilen&#8221; de denilen HDPE %90 oran\u0131nda kristal haldedir. Ana zincir en az 200 karbon atomludur. ASTM standartlar\u0131nda Tip III ve Tip IV olarak tan\u0131mlanan HDPE&#8217;in ba\u011f\u0131l yo\u011funlu\u011fu 0.940 ve daha yukar\u0131 olarak verilmi\u015ftir. (HDPE, PETK\u0130M kapasitesi 96.000 ton\/y\u0131ld\u0131r).<\/p>\n<p><strong>\u00d6zellikleri<\/strong><br \/>\nHDPE, g\u00f6r\u00fcn\u00fcm olarak <a href=\"https:\/\/esfaplastik.com\/index.php\/pe-polietilen\/ldpe-alcak-yogunluklu-polietilen\/\" title=\"LDPE  Al\u00e7ak Yo\u011funluklu Polietilen\" target=\"_blank\">LDPE<\/a>&#8216;e benzese de ondan \u00e7ok daha sert, molek\u00fcl k\u00fctlesi 150000-400000 dolaylar\u0131nda bir polimerdir. Suya, kimyasal maddelere direnci iyidir. I\u015f\u0131k ve a\u00e7\u0131k hava ko\u015fullar\u0131na LDPE&#8217;de oldu\u011fu gibi dayan\u0131kl\u0131 de\u011fildir. \u00d6zel dolgularla bu diren\u00e7 art\u0131r\u0131labilir. Mekanik \u00f6zellikler \u00e7ok iyi olup, \u00f6zellikle darbe ve \u00e7ekme dayan\u0131mlar\u0131 y\u00fcksektir. Baz\u0131 dolgu maddeleriyle de \u00f6zellikler daha da iyile\u015ftirilir. Normalde \u00e7ekme dayan\u0131m\u0131 225-350 kgf\/cm2 civar\u0131ndad\u0131r. S\u0131cakl\u0131k dayan\u0131m\u0131 100 \u00b0C&#8217;nin \u00fczerindedir. Ayr\u0131ca kendi kendini ya\u011flama \u00f6zelli\u011fi vard\u0131r.<\/p>\n<p>Enjeksiyon, ekstr\u00fczyon, toz kaplama, film \u00e7ekme, d\u00f6ner kal\u0131plama, gibi bir\u00e7ok bi\u00e7imlendirme y\u00f6ntemine uygun bir malzemedir. Enjeksiyon kal\u0131p s\u0131cakl\u0131\u011f\u0131n\u0131n 50-70 \u00b0C&#8217;de tutulmas\u0131 cihazdan \u00e7\u0131kan \u00fcr\u00fcn kalitesini y\u00fckseltir. HDPE elektriksel uygulamalara da \u00e7ok elveri\u015flidir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HDPE, petrolden elde edilen, y\u00fcksek yo\u011funluklu polietilen malzemedir. \u0130smi \u0130ngilizce kar\u015f\u0131l\u0131\u011f\u0131 olan &#8220;High Density Polyetylene&#8221; kelimelerinin k\u0131saltmas\u0131ndan gelmektedir. Sanayi ve imalat sekt\u00f6r\u00fcnde genelde bu isim kullan\u0131lmaktad\u0131r. Yakla\u015f\u0131k olarak, 1.75 kg. petrolden , 1 kg. HDPE hammadde elde edilir. Elde Edilmesi HDPE g\u00fcn\u00fcm\u00fczde birka\u00e7 y\u00f6ntemle elde edilebilmektedir. Radikal polimerizasyon y\u00f6nteminde, y\u00fcksek bas\u0131n\u00e7 uygulan\u0131r. Koordinasyon polimerizasyonunda, al\u00e7ak [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":2323,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"description\" content=\"HDPE, petrolden elde edilen, y\u00fcksek yo\u011funluklu polietilen malzemedir. \u0130smi \u0130ngilizce kar\u015f\u0131l\u0131\u011f\u0131 olan &quot;High Density Polyetylene&quot; kelimelerinin k\u0131saltmas\u0131ndan gelmektedir.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/esfaplastik.com\/index.php\/hdpe-yuksek-yogunluklu-polietilen\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HDPE Y\u00fcksek Yo\u011funluklu Polietilen - 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