{"id":60,"date":"2026-06-04T08:51:43","date_gmt":"2026-06-04T08:51:43","guid":{"rendered":"https:\/\/dispersingagent.net\/?p=60"},"modified":"2026-06-04T08:52:22","modified_gmt":"2026-06-04T08:52:22","slug":"wakilin-rarrabawa-bambanci-tsakanin-ingantacciyar-tushen-ni%c6%99a-da-wadda-ke-yi-maka-%c6%99iyayya-a-kowane-mataki","status":"publish","type":"post","link":"https:\/\/dispersingagent.net\/ha\/dispersing-agent-the-difference-between-a-good-millbase-and-one-that-fights-you-every-step\/","title":{"rendered":"Mai Rushewa: Bambanci Tsakanin Millbase Mai Kyau da Wanda Ke Yaki da Kai a Kowane Mataki"},"content":{"rendered":"<p dir=\"auto\">Bayan fiye da shekaru ashirin da biyar ina gudanar da gwaje-gwajen rarrabawa da warware matsalolin samarwa, na koyi cewa ingancin rufin \u0199arshe sau da yawa ana yanke hukunci ne a cikin mintuna talatin na farko na tushen injin. Idan launuka da cika ba su bazu yadda ya kamata tun daga farko ba, za ka iya ciyar da sauran ranar kana fama da tashin kauri, rashin ingantaccen ha\u0253akar launi, ko taruwa a cikin gwangwani. A nan ne wakilan rarrabawa ke bayar da muhimmancinsu. Ba kawai suna sa launuka su yi ruwa da sauri ba \u2014 suna kuma hana barbashi su ha\u0257u, don haka tsarin gaba \u0257aya zai kasance mai daidaito a duk lokacin samarwa, ajiya, da shafawa.<\/p>\n<p dir=\"auto\"><!--more--><\/p>\n<p dir=\"auto\">Wani wakilin rarrabawa yana aiki ta hanyar mannewa saman pigment kuma yana \u0199ir\u0199irar shinge da ke hana sake ha\u0257uwa. A cikin tsarin ruwa, wannan sau da yawa ana samun \u0199in juna na lantarki daga \u0199ungiyoyin da ke \u0257auke da caji (kamar carboxylates a kan polyacrylates). A cikin tsarin mai narkewa ko na yawan \u0199wayoyin abu, shingen tsari daga dogayen sarkokin polymer yawanci yafi muhimmanci. Wasu sabbin dispersants na polymeric na zamani suna ha\u0257a dukkan wa\u0257annan hanyoyin biyu. Sakamakon haka shi ne \u0199ananan laka a lokacin \u0257aukar pigment mai yawa, saurin ni\u0199a, \u0199arfin launi mafi kyau, da \u0199arancin sauka a tsawon lokaci.<\/p>\n<p dir=\"auto\">Har yanzu ina tuna wani aikin fentin gine-gine na ruwa inda bambancin ya kasance mai ban mamaki. Muna yada TiO\u2082 rutile na al'ada (20 % PVC) da pigmentin organic ja a cikin tsarin emulsion na acrylic. Ba tare da wani dispersant ba, laushin millbase ya tashi sama da 8000 mPa\u00b7s cikin mintuna goma na yadawa da sauri, gwajin Hegman bai ta\u0253a \u0199asa da 4 ba, kuma bayan kwanaki uku pigment \u0257in ja ya fara yin iyo da taruwa. \u0198arfin launi ya kasance kusan 15 % \u0199asa da abin da ake nufi, kuma sheki a 60\u00b0 a kan fim \u0257in da ya bushe ya kasance raka'a 42 kawai.<\/p>\n<p dir=\"auto\">Sannan muka gudanar da wannan tsari \u0257aya tare da wakilai masu yadawa guda uku daban-daban a matakin aiki na 1.2 % bisa nauyin pigment:<\/p>\n<ul dir=\"auto\">\n<li>An samu ammonium polyacrylate na gargajiya mai kauri na 3200 mPa\u00b7s bayan an yada shi, Hegman 6.5, da launi mai \u0257orewa bayan kwanaki 30 na ajiya (Delta E &lt; 0.8). Sheki ya \u0199aru zuwa matakai 58.<\/li>\n<li>Maganin rabewar polyurethane mai nauyin kwayoyin zarra mafi girma ya rage laka zuwa 2100 mPa\u00b7s, ya kai Hegman 7, kuma ya samar da \u0199arfin launi mafi kyau (+12 % \u0199arfin launi idan aka kwatanta da na kulawa). Bayan kwanaki 30 Delta E ya kasance 0.4 kawai, kuma sheki ya tsaya a matakin 61.<\/li>\n<li>Maganin rarrabewa na phosphate ya yi kyau wajen laushi (2400 mPa\u00b7s) amma ya nuna \u0257an rashin jituwa da mai ha\u0257a acrylic \u2014 mun ga \u0199ananan ramuka a gwaje-gwajen ja-da-\u0199asa da raguwar sheki da raka'a hu\u0257u.<\/li>\n<\/ul>\n<p dir=\"auto\">Sigar polyurethane ta yi nasara a wannan aikin saboda ta ba da mafi kyawun daidaito tsakanin \u0199ananan laka, yaduwa cikin sauri, da \u0257orewa na dogon lokaci ba tare da illa ga fim \u0257in ba. A \u0199arshe mun yi amfani da shi a 0.9 % mai aiki bayan daidaita lan\u0199wasar \u0199ima. Masana'antar ta kuma lura cewa za su iya \u0199ara \u0257aukar TiO\u2082 zuwa 8 % ba tare da matsalolin laushi ba, wanda ya inganta \u0253oye-\u0253oye kuma ya rage jimillar farashin ha\u0257in sinadarai.<\/p>\n<p dir=\"auto\">Wannan gwaji ya koya mini darussa masu amfani da dama. Da farko, adadin magani ya fi muhimmanci fiye da yadda mafi yawan mutane ke tsammani. Idan ka yi \u0199asa da kima, za ka samu tarwatsewa daga baya; idan ka yi yawa, za ka iya \u0199ara kauri sake ko raunana juriya ga ruwa. Kullum ina amfani da matakai daga 0.5 % zuwa 2.5 % na sinadarin da ke aiki a kan pigment, sannan ina lura da lan\u0199wasawar ni\u0199a da kuma daidaiton ajiya.<\/p>\n<p dir=\"auto\">Na biyu, dole ne sinadarai su dace da tsarin. Polyacrylates suna da arha kuma suna da tasiri a yawancin fentin ado na ruwa, amma suna iya yin saurin tasiri ga electrolytes da sauyin pH. Masu rushewar polymeric (na polyurethane ko polyether) suna da tsada amma suna ba da ingantaccen aiki tare da pigments na organic masu wahala da kuma a tsarin da ke bu\u0199atar haske mai \u0199arfi ko \u0199arfi na waje. A cikin alkyds ko epoxies masu \u0257auke da sinadaran narkewa, har yanzu nakan fi amfani da nau'ikan fatty-acid ko acrylic da aka gyara.<\/p>\n<p dir=\"auto\">Na uku, ainihin gwaji ba shi ne aikin farko kawai ba. Kullum ina duba kauri bayan awanni 24 da kuma bayan mako guda, sannan in gudanar da gwajin gogewa don kar\u0253ar launi, sannan in yi ajiya cikin sauri (50 \u00b0C na makonni biyu) don ganin ko akwai taruwar \u0199wayoyi ko ambaliya. Yawancin samfuran dakin gwaje-gwaje da ake ganin sun yi kyau suna faduwa a wannan mataki.<\/p>\n<p dir=\"auto\">Daga \u0199warewa, mafi girman ribobi suna bayyana ne lokacin da kake \u0199ara yawan lodi na pigment ko kuma kana aiki da pigment masu wahalar yaduwa kamar wasu phthalocyanines ko ba\u0199ar carbon. A cikin wani aikin tawada, sauya zuwa dispersant polymeric da aka tsara musamman ya ba mu damar \u0199ara yawan carbon black daga 12 % zuwa 18 % yayin da muka ri\u0199e viscosity \u0199asa da 1500 mPa\u00b7s. Wannan canji guda ya inganta jetness kuma ya rage yawan zagayen a cikin injin ni\u0199a \u0199wayoyi daga hu\u0257u zuwa biyu.<\/p>\n<p dir=\"auto\">Tabbas, wakilan rarrabawa ba maganin komai ba ne. Ba za su gyara ingancin pigment mara kyau, kuskuren kayan ni\u0199a, ko rashin isasshen shear ba. Hakanan suna \u0199ara farashi kuma wani lokaci na iya shafar wasu halaye \u2014 kumfa, juriya ga ruwa, ko ha\u0257in fentin juna idan aka za\u0253i nau'in da bai dace ba.<\/p>\n<p dir=\"auto\">A \u0199arshe, za\u0253in ingantaccen wakilin rarrabawa har yanzu \u0257aya ne daga cikin muhimman shawarwarin da kake yanke a cikin tsarin ha\u0253aka. Idan ya yi aiki yadda ya kamata, za ka samu samarwa cikin sauri, fakitoci masu daidaito, ingantaccen launi, da \u0199arancin korafe-korafen abokan ciniki. Idan bai yi aiki ba, za ka yi fama da tushen injin kowace rana. Masana'antun da ke \u0257aukar za\u0253in dispersant a matsayin aikin tsara sinadarai mai muhimmanci \u2014 suna gudanar da gwaje-gwaje na kwatantawa yadda ya kamata kuma suna auna abin da ya faru a zahiri bayan ajiya da amfani \u2014 su ne wa\u0257anda suka daina bin matsaloli suka fara cimma burinsu akai-akai.<\/p>","protected":false},"excerpt":{"rendered":"<p>After more than twenty-five years running dispersion trials and troubleshooting production batches, I\u2019ve learned that the quality of the final coating often gets decided in the first thirty minutes of the millbase. If the pigments and fillers don\u2019t disperse properly right from the start, you can spend the rest of the day chasing viscosity spikes, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-60","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/posts\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/comments?post=60"}],"version-history":[{"count":2,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/posts\/60\/revisions"}],"predecessor-version":[{"id":64,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/posts\/60\/revisions\/64"}],"wp:attachment":[{"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/media?parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/categories?post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dispersingagent.net\/ha\/wp-json\/wp\/v2\/tags?post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}