{"id":118777,"date":"2022-09-14T15:29:14","date_gmt":"2022-09-14T07:29:14","guid":{"rendered":"https:\/\/www.alpapowder.com\/118777\/"},"modified":"2022-09-14T15:29:14","modified_gmt":"2022-09-14T07:29:14","slug":"plastik-guclendirme-ve-modifikasyon-icin-kullanilan-talk-ne-kadar-beyazsa-o-kadar-iyi-mi","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/118777\/","title":{"rendered":"Plastik g\u00fc\u00e7lendirme ve modifikasyon i\u00e7in kullan\u0131lan talk ne kadar beyazsa o kadar iyi mi?"},"content":{"rendered":"

\"\"<\/p>\n

Plastik takviye ve modifikasyon, \u00f6zellikle otomotiv ve beyaz e\u015fya end\u00fcstrilerinde polipropilen modifikasyonu i\u00e7in talk\u0131n \u00f6nemli bir uygulama alan\u0131d\u0131r ve beyazl\u0131k, talk \u00fcr\u00fcnlerinin \u00f6nemli bir g\u00f6stergesidir. Peki, plastikler i\u00e7in talk pudras\u0131 ne kadar beyazsa o kadar iyi mi?<\/p>\n

Plastik end\u00fcstrisinde kullan\u0131lan talk\u0131n beyazl\u0131\u011f\u0131 genellikle CIE Lab (L*a*b*) ile ifade edilir. Kuru beyazl\u0131k \u00f6l\u00e7\u00fcm\u00fcne ek olarak \u0131slak beyazl\u0131k da \u00f6l\u00e7\u00fcl\u00fcr. Kuru beyazl\u0131k, genel anlamda beyazl\u0131\u011f\u0131n tan\u0131m\u0131d\u0131r. Islak beyazl\u0131k, uygun miktarda DMP (dimetil ftalat) veya DOP (dioktil ftalat) eklendikten sonra talk tozunun beyazl\u0131\u011f\u0131d\u0131r.<\/p>\n

Talk\u0131n beyazl\u0131\u011f\u0131n\u0131 belirleyen fakt\u00f6rler sadece hammaddenin kendisi de\u011fil, ayn\u0131 zamanda partik\u00fcl boyutu, nem ve safs\u0131zl\u0131klard\u0131r. Demir s\u00fclf\u00fcr, grafit vb. gibi koyu renkli safs\u0131zl\u0131klar i\u00e7eriyorsa, \u00fcr\u00fcn ne kadar ince olursa beyazl\u0131k o kadar d\u00fc\u015f\u00fck olur.<\/p>\n

Do\u011fada talk\u0131n bir\u00e7ok rengi vard\u0131r. A\u00e7\u0131k renkli talk, ezildikten sonra beyazd\u0131r, ancak re\u00e7ine ile kar\u0131\u015ft\u0131r\u0131ld\u0131ktan sonra, matrisin rengi, a\u015fa\u011f\u0131 yukar\u0131 talk\u0131n ger\u00e7ek rengini g\u00f6sterecektir. Bu dezavantaj talk\u0131n \u00e7ok y\u00f6nl\u00fcl\u00fc\u011f\u00fcn\u00fc, \u00f6zellikle plastiklerde koyu renkli talk kullan\u0131m\u0131n\u0131 s\u0131n\u0131rlar. Kuru beyazl\u0131k ile kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, \u0131slak beyazl\u0131k talk\u0131n plastik matrisin rengini de\u011fi\u015ftirme derecesini daha sezgisel olarak yans\u0131tabilir. Ya\u015f beyazl\u0131kta b*(b) de\u011feri ne kadar d\u00fc\u015f\u00fckse, plastik matrisin renk de\u011fi\u015fimi o kadar k\u00fc\u00e7\u00fck olur.<\/p>\n

D\u00fcnyadaki talk\u0131n \u00e7o\u011fu beyaz de\u011fildir. Beyaz talk esas olarak nispeten s\u0131n\u0131rl\u0131 olan \u00c7in, Afganistan ve Hindistan’dan gelmektedir. Plastik end\u00fcstrisinde artan beyaz talk talebi ile fiyat son 20 y\u0131lda y\u00fckselmeye devam etti. Beyaz talk k\u0131tl\u0131\u011f\u0131 gelecekte uzun vadeli bir e\u011filimdir. Asl\u0131nda, bir\u00e7ok uygulamada beyaz talk gerekli de\u011fildir. \u00d6rne\u011fin, koyu plasti\u011fin iyile\u015ftirilmesinde ve de\u011fi\u015ftirilmesinde, beyaz talk ve koyu talk kullanman\u0131n g\u00fc\u00e7lendirme etkisi ayn\u0131d\u0131r.<\/p>\n

Testler, talk\u0131n \u0131slak beyazl\u0131\u011f\u0131ndaki her %1’lik art\u0131\u015f i\u00e7in, nihai \u00fcr\u00fcn\u00fcn beyazl\u0131\u011f\u0131n\u0131n sadece %0.2 ila %0.3 aras\u0131nda artt\u0131\u011f\u0131n\u0131 g\u00f6stermektedir. Talk\u0131n beyazl\u0131\u011f\u0131n\u0131n tek tarafl\u0131 aray\u0131\u015f\u0131 anlams\u0131zd\u0131r. Ge\u00e7mi\u015fte beyaz talk\u0131n fiyat\u0131 \u00e7ok d\u00fc\u015f\u00fck oldu\u011fu i\u00e7in bir\u00e7ok kullan\u0131c\u0131 beyaz talk kullanman\u0131n maliyetindeki art\u0131\u015f\u0131 pek d\u00fc\u015f\u00fcnmezdi. Arz\u0131n azalmas\u0131 ve fiyat\u0131n artmas\u0131yla birlikte kullan\u0131m al\u0131\u015fkanl\u0131klar\u0131n\u0131n de\u011fi\u015ftirilmesi ve kaynaklar\u0131n kapsaml\u0131 kullan\u0131m\u0131n\u0131n iyile\u015ftirilmesi gerekmektedir.<\/p>\n

Geli\u015ftirme ve modifikasyon i\u00e7in kullan\u0131lan talk tozunun, \u00f6zellikle g\u00f6r\u00fcn\u00fcm a\u00e7\u0131s\u0131ndan daha y\u00fcksek gereksinimleri olan a\u00e7\u0131k renkli \u00fcr\u00fcnler i\u00e7in, siyah noktalar\u0131n say\u0131s\u0131n\u0131 da kontrol etmesi gerekir. Bu siyah noktalar, do\u011fal demir s\u00fclf\u00fcr cevherinin, grafit gibi koyu renkli minerallerin veya madencilikten kaynaklanan koyu renkli safs\u0131zl\u0131klar\u0131n \u00f6\u011f\u00fct\u00fclmesiyle olu\u015fur. Az miktarda siyah nokta beyazl\u0131k \u00fczerinde temelde hi\u00e7bir etkiye sahip de\u011fildir, ancak a\u00e7\u0131k renkli plastik \u00fcr\u00fcnlerin y\u00fczeyinde g\u00f6r\u00fcn\u00fcm\u00fc etkileyen g\u00f6r\u00fcn\u00fcr siyah nokta kusurlar\u0131 olu\u015facakt\u0131r. \u00c7ok say\u0131da siyah nokta beyazl\u0131\u011f\u0131 olumsuz etkiler. Toz inceli\u011finin artmas\u0131yla safs\u0131zl\u0131klar daha da k\u0131r\u0131lacak ve bu da toz beyazl\u0131\u011f\u0131nda bir azalmaya neden olacakt\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"

Plastik takviye ve modifikasyon, \u00f6zellikle otomotiv ve beyaz e\u015fya end\u00fcstrilerinde polipropilen modifikasyonu i\u00e7in talk\u0131n \u00f6nemli bir uygulama alan\u0131d\u0131r ve beyazl\u0131k, talk \u00fcr\u00fcnlerinin \u00f6nemli bir g\u00f6stergesidir.<\/p>\n","protected":false},"author":7,"featured_media":118754,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-118777","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\/118777","targetHints":{"allow":["GET"]}}],"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=118777"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/118777\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/118754"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=118777"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=118777"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=118777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}