{"id":134269,"date":"2024-09-11T15:39:31","date_gmt":"2024-09-11T07:39:31","guid":{"rendered":"https:\/\/www.alpapowder.com\/134269\/"},"modified":"2024-09-11T15:39:32","modified_gmt":"2024-09-11T07:39:32","slug":"talk-pudrasinin-4-derecesini-biliyor-musunuz","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/134269\/","title":{"rendered":"Talk pudras\u0131n\u0131n 4 derecesini biliyor musunuz?"},"content":{"rendered":"

\"\"<\/p>\n

Talk pudras\u0131, plastik dolgu maddesi olarak sadece re\u00e7ine kullan\u0131m\u0131n\u0131 kurtarmakla kalmaz, ayn\u0131 zamanda \u00fcr\u00fcn\u00fcn fiziksel \u00f6zelliklerini \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirebilir ve g\u00fc\u00e7lendirici bir rol oynayabilir. Yeterli inceli\u011fe sahip talk pudras\u0131, \u00fcr\u00fcn\u00fcn sertli\u011fini, darbe dayan\u0131m\u0131n\u0131, s\u00fcr\u00fcnme direncini, sertli\u011fini, y\u00fczey \u00e7izilme direncini, \u0131s\u0131 direncini ve \u0131s\u0131 deformasyon s\u0131cakl\u0131\u011f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirebilir.<\/p>\n

Talk se\u00e7erken, talk\u0131n en az\u0131ndan “d\u00f6rt derecesi” dikkate al\u0131nmal\u0131d\u0131r: safl\u0131k, beyazl\u0131k, pulluluk ve incelik. Genel olarak, talk \u00fcr\u00fcnlerinin kalitesini de\u011ferlendirmek i\u00e7in en az\u0131ndan yukar\u0131daki d\u00f6rt fakt\u00f6r dikkate al\u0131nmal\u0131d\u0131r.<\/p>\n

Safl\u0131k
\nSafl\u0131k, \u00fcr\u00fcn\u00fcn talk i\u00e7eri\u011fini ifade eder. Talk, do\u011fada ve end\u00fcstriyel \u00fcretimde safs\u0131zl\u0131klar i\u00e7erir ve end\u00fcstride %100 saf talk \u00fcr\u00fcnlerinin bulunmas\u0131 imkans\u0131zd\u0131r. \u015e\u00fcphesiz, talk pudras\u0131n\u0131n safl\u0131\u011f\u0131 ne kadar y\u00fcksekse, g\u00fc\u00e7lendirici etkisi o kadar iyi olur. Talk pudras\u0131ndaki baz\u0131 safs\u0131zl\u0131klar sadece talk pudras\u0131n\u0131n safl\u0131\u011f\u0131n\u0131 azaltmakla kalmaz, ayn\u0131 zamanda nihai \u00fcr\u00fcn\u00fcn performans\u0131 \u00fczerinde de \u00f6nemli bir etkiye sahiptir.<\/p>\n

Beyazl\u0131k
\nTalk end\u00fcstrisinde iki t\u00fcr beyazl\u0131k vard\u0131r: dar beyazl\u0131k ve geni\u015f beyazl\u0131k. Dar beyazl\u0131k, mavi \u0131\u015f\u0131k beyazl\u0131\u011f\u0131 R457, Y, L*, Ganz beyazl\u0131\u011f\u0131 ve Hunter beyazl\u0131\u011f\u0131 ile ifade edilebilen genel bir beyazl\u0131k tan\u0131m\u0131d\u0131r. Geni\u015f beyazl\u0131k kuru beyazl\u0131k, \u0131slak beyazl\u0131k ve tonu i\u00e7erir. Islak beyazl\u0131k olarak adland\u0131r\u0131lan \u015fey, talk pudras\u0131na uygun miktarda DMP (dimetil ftalat) eklendikten sonra \u00f6l\u00e7\u00fclen beyazl\u0131kt\u0131r.<\/p>\n

Ayn\u0131 hammaddeler i\u00e7in, par\u00e7ac\u0131k boyutu ne kadar ince olursa, beyazl\u0131k o kadar y\u00fcksek olur. Nem i\u00e7eri\u011fi ne kadar y\u00fcksek olursa, beyazl\u0131k o kadar d\u00fc\u015f\u00fck olur. Beyazl\u0131\u011f\u0131n \u00fcr\u00fcn\u00fcn fiziksel \u00f6zellikleri \u00fczerinde bir etkisi olmasa da, a\u00e7\u0131k renkli \u00fcr\u00fcnler i\u00e7in rengin safl\u0131\u011f\u0131n\u0131 korumak \u00e7ok \u00f6nemlidir.<\/p>\n

Pullar
\nTalk pudras\u0131n\u0131n plastik \u00fcr\u00fcnler \u00fczerindeki \u00f6nemli g\u00fc\u00e7lendirici etkisi, esas olarak benzersiz mikro pullu yap\u0131s\u0131ndan kaynaklanmaktad\u0131r. Talk pudras\u0131n\u0131n pullu yap\u0131s\u0131 ne kadar eksiksizse, g\u00fc\u00e7lendirici etkisi de o kadar belirgin olur. \u00dcr\u00fcn\u00fcn pullulu\u011funu etkileyen iki ana fakt\u00f6r \u015funlard\u0131r: talk pudras\u0131n\u0131n safl\u0131\u011f\u0131 ve tozun i\u015fleme teknolojisi.<\/p>\n

Talk pudras\u0131ndaki safs\u0131zl\u0131klar pullu bir yap\u0131ya sahip de\u011fildir. Talk pudras\u0131 ne kadar safsa, o kadar az safs\u0131zl\u0131k ve pullu yap\u0131 o kadar iyi olur. \u00dcr\u00fcn\u00fcn mikronize edilmesi s\u00fcrecinde, farkl\u0131 y\u00f6ntemler kullan\u0131ld\u0131\u011f\u0131nda \u00fcr\u00fcn\u00fcn pullu yap\u0131s\u0131 farkl\u0131 \u015fekilde korunur. Uygun olmayan y\u00f6ntemler ve \u00e7al\u0131\u015fma ko\u015fullar\u0131 pullu yap\u0131s\u0131n\u0131 bile yok edebilir.<\/p>\n

\u0130ncelik
\nMikronizasyon, talk \u00fcr\u00fcnlerinin geli\u015ftirme e\u011filimidir. \u00dcr\u00fcn ne kadar ince olursa, g\u00fc\u00e7lendirici etkisi o kadar iyi olur. Ayn\u0131 zamanda, par\u00e7ac\u0131klar\u0131n y\u00fczey enerjisi artar, aglomere olmas\u0131 kolay, da\u011f\u0131lmas\u0131 zor ve pahal\u0131d\u0131r. Bu nedenle, kendi teknik seviyemize ve ger\u00e7ek ihtiya\u00e7lar\u0131m\u0131za g\u00f6re uygun inceli\u011fe sahip \u00fcr\u00fcnleri se\u00e7memiz gerekir, ne kadar ince o kadar iyi de\u011fil.<\/p>\n

Bir talk \u00fcr\u00fcn\u00fcn\u00fcn par\u00e7ac\u0131k boyutunun de\u011ferlendirilmesi yaln\u0131zca ortalama inceli\u011fe dayand\u0131r\u0131lamaz. Bir \u00fcr\u00fcn\u00fcn kalitesini de\u011ferlendirmek i\u00e7in en az iki g\u00f6sterge vard\u0131r: D50 ve D100 (veya D98).<\/p>\n

\u00dcr\u00fcnler giderek daha ince hale geldik\u00e7e, insanlar\u0131n ezme i\u015fleminden sonra ince talk\u0131n mikroskobik \u015fekli ve par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 i\u00e7in daha y\u00fcksek gereksinimleri vard\u0131r. Par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131n\u0131 de\u011ferlendirmek i\u00e7in kullan\u0131lan ana g\u00f6sterge D50’den D97, D98 ve \u015fimdi de D100’e kaym\u0131\u015ft\u0131r. Ayn\u0131 zamanda, par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131n\u0131n tekrarlanabilirli\u011fi daha kat\u0131d\u0131r. Bir \u00fcr\u00fcn\u00fc de\u011ferlendirirken, ortalama par\u00e7ac\u0131k boyutu yaln\u0131zca gereksinimleri kar\u015f\u0131lamakla kalmamal\u0131, daha da \u00f6nemlisi, par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 m\u00fcmk\u00fcn oldu\u011funca dar olmal\u0131 ve m\u00fcmk\u00fcn oldu\u011funca az b\u00fcy\u00fck par\u00e7ac\u0131k i\u00e7ermelidir.<\/p>\n

\u00dcr\u00fcn, \u00fcretim prati\u011finde \u00e7ok zor olan her parti i\u00e7in ayn\u0131 par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131n\u0131 elde etmeye \u00e7al\u0131\u015fmal\u0131d\u0131r. \u00dcst d\u00fczey talk \u00fcr\u00fcnlerinde, \u00f6zellikle kaba partik\u00fcl say\u0131s\u0131 olmak \u00fczere partik\u00fcl boyutu da\u011f\u0131l\u0131m\u0131n\u0131 kontrol etmek, hem y\u00fcksek verimli, y\u00fcksek hassasiyetli ve g\u00fcvenilir derecelendirme ekipman\u0131 hem de zengin i\u015fletme deneyimi ve ekipman bak\u0131m yetenekleri gerektiren \u00e7ok kritik bir teknolojidir. \u00c7in’de nispeten olgun partik\u00fcl boyutu kontrol teknolojisinde ustala\u015fm\u0131\u015f sadece 6-7 \u015firket vard\u0131r.<\/p>\n

Partik\u00fcl boyutu da\u011f\u0131l\u0131m\u0131, lazer y\u00f6ntemi ve sedimantasyon y\u00f6ntemi dahil olmak \u00fczere bir partik\u00fcl boyutu da\u011f\u0131l\u0131m cihaz\u0131 ile \u00f6l\u00e7\u00fclebilir. Ancak, \u00fcretim uygulamas\u0131nda, kaba partik\u00fcl miktar\u0131n\u0131 tespit etmek i\u00e7in \u00e7o\u011funlukla tarama y\u00f6ntemi kullan\u0131l\u0131r.<\/p>\n

Talk pudras\u0131n\u0131n kendi pullu yap\u0131s\u0131 nedeniyle b\u00fcy\u00fck bir \u00f6zg\u00fcl y\u00fczey alan\u0131na ve k\u00fc\u00e7\u00fck bir hacim yo\u011funlu\u011funa sahip oldu\u011funu belirtmekte fayda var. 325 mesh talk pudras\u0131n\u0131n hacim yo\u011funlu\u011fu 0,8-0,9 g\/cm3 iken, 1250 mesh talk pudras\u0131 0,25-0,3 g\/cm3’e d\u00fc\u015fm\u00fc\u015f ve 4000 mesh ise sadece yakla\u015f\u0131k 0,12 g\/cm3’t\u00fcr. Bu durum kullan\u0131m s\u0131ras\u0131nda ciddi toz kirlili\u011fine, kar\u0131\u015ft\u0131rma zorlu\u011funa, artan maliyetlere ve azalan verimlere neden olur. Ayr\u0131ca uzun mesafeli tedarikin navlun maliyeti olduk\u00e7a y\u00fcksektir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Yeterli inceli\u011fe sahip talk pudras\u0131, \u00fcr\u00fcn\u00fcn sertli\u011fini, darbe dayan\u0131m\u0131n\u0131, s\u00fcr\u00fcnme direncini, sertli\u011fini, y\u00fczey \u00e7izilme direncini, \u0131s\u0131 direncini ve \u0131s\u0131 deformasyon s\u0131cakl\u0131\u011f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rabilir.<\/p>\n","protected":false},"author":7,"featured_media":134236,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-134269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-endustri-haberleri-tr"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/134269"}],"collection":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/comments?post=134269"}],"version-history":[{"count":1,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/134269\/revisions"}],"predecessor-version":[{"id":134270,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/134269\/revisions\/134270"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/134236"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=134269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=134269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=134269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}