{"id":6181,"date":"2023-07-18T03:15:35","date_gmt":"2023-07-18T03:15:35","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6181"},"modified":"2026-04-28T10:42:18","modified_gmt":"2026-04-28T10:42:18","slug":"how-to-choose-a-dispersant","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/hu\/how-to-choose-a-dispersant\/","title":{"rendered":"Hogyan v\u00e1lasszunk diszperg\u00e1l\u00f3szert?"},"content":{"rendered":"<h1>Hogyan v\u00e1lasszunk diszperg\u00e1l\u00f3szert?<\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> For wetting, leveling, defoaming, and dispersing topics, formulators usually compare performance and side effects together because over-correcting one surface issue can easily create another.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<h2><strong>I. A diszperg\u00e1l\u00e1shoz haszn\u00e1lt f\u0151 gyanta kiv\u00e1laszt\u00e1sa<\/strong><\/h2>\n<p>A gyanta, k\u00fcl\u00f6n\u00f6sen az \u0151rl\u00e9shez haszn\u00e1lt gyanta, kulcsszerepet j\u00e1tszik a sz\u00ednpaszta elk\u00e9sz\u00edt\u00e9s\u00e9ben, \u00e9s a f\u0151 gyanta szerepe a k\u00f6vetkez\u0151:<br \/>\n(1) A pigment eloszlat\u00e1sa \u00e9s r\u00f6gz\u00edt\u00e9se.<br \/>\n(2) A diszperg\u00e1lt \u00e9s sz\u00e9tv\u00e1lasztott pigmentr\u00e9szecsk\u00e9k stabiliz\u00e1l\u00e1sa.<br \/>\nA f\u0151 gyanta fenti funkci\u00f3i n\u00e9h\u00e1ny k\u00eds\u00e9rleten kereszt\u00fcl l\u00e1that\u00f3k, p\u00e9ld\u00e1ul a hossz\u00fa olaj alkidgyanta, poliamidgyanta, amin\u00f3gyanta, aldehidek \u00e9s ketonok gyanta, alacsony molekulat\u00f6meg\u0171 hidroxil akrilgyanta j\u00f3 nedves\u00edt\u0151 k\u00e9pess\u00e9get mutat a pigmenthez, m\u00edg az alacsony hidroxil akrilgyanta, termoplasztikus akrilgyanta, nagy molekulat\u00f6meg\u0171 poli\u00e9sztergyanta, nagy molekulat\u00f6meg\u0171 tel\u00edtett poli\u00e9sztergyanta, vinil kopolimeriz\u00e1ci\u00f3s gyanta \u00e9s poliolefin gyanta rossz nedves\u00edt\u0151 k\u00e9pess\u00e9get mutat a pigmenthez. pigmentek rossz nedves\u00edt\u0151 k\u00e9pess\u00e9g\u0171ek. Ugyanaz a pigment k\u00fcl\u00f6nb\u00f6z\u0151 sz\u00ednf\u00e1zisokat mutat k\u00fcl\u00f6nb\u00f6z\u0151 gyantarendszerekben. Szinte minden korom, szerves pigment \u00e9s \u00e1tl\u00e1tsz\u00f3 vasoxid megv\u00e1ltoztatja sz\u00ednf\u00e1zis\u00e1t, k\u00fcl\u00f6n\u00f6sen a sz\u00f3r\u00f3 sz\u00ednf\u00e1zist, k\u00fcl\u00f6nb\u00f6z\u0151 gyantarendszerek eset\u00e9n. Ez\u00e9rt a megfelel\u0151 diszperg\u00e1l\u00f3szer kiv\u00e1laszt\u00e1sa a meghat\u00e1rozott f\u0151 gyantarendszerben nem csak a pigment diszperg\u00e1l\u00e1s\u00e1ra \u00e9s stabiliz\u00e1l\u00e1s\u00e1ra szolg\u00e1l, hanem a pigment be\u00e1ll\u00edt\u00e1s\u00e1ra is, hogy el\u00e9rj\u00fck a k\u00edv\u00e1nt sz\u00ednt, p\u00e9ld\u00e1ul a s\u00f6t\u00e9ts\u00e9get, az \u00e1tl\u00e1tsz\u00f3s\u00e1got, a 45\u00b0-os sz\u00ednf\u00e9nyt stb. Ez\u00e9rt a diszperg\u00e1l\u00f3szer \u00e9s a gyanta k\u00f6z\u00f6tti \u00e9sszer\u0171 illeszked\u00e9s mag\u00e1ban foglalja a k\u00f6vetkez\u0151ket<br \/>\n\u2460Compatibility (mintateszt, ellen\u0151rizze a kompatibilit\u00e1st az old\u00f3szer elt\u00e1vol\u00edt\u00e1sa ut\u00e1n)<br \/>\n\u2461 A diszperg\u00e1l\u00f3szer viszkozit\u00e1scs\u00f6kkent\u0151 viselked\u00e9se a gyantarendszerben a pigment meghat\u00e1roz\u00e1s\u00e1hoz (rot\u00e1ci\u00f3s viszkozim\u00e9teres vizsg\u00e1lat).<br \/>\n\u2462A diszperg\u00e1l\u00f3szer sz\u00ednterjed\u00e9si viselked\u00e9se a gyantarendszerben a meghat\u00e1rozott pigmenthez (kapar\u00e1s \u00e9s sz\u00edn\u00f6sszehasonl\u00edt\u00e1s).<br \/>\n\u2463T\u00e1rol\u00e1si stabilit\u00e1s (\u00e1raml\u00e1si lemez m\u00f3dszer)<br \/>\nHa a gyantarendszer megv\u00e1ltozik, a diszperg\u00e1l\u00f3szer fenti teljes\u00edtm\u00e9nye ennek megfelel\u0151en v\u00e1ltozik. Az ilyen v\u00e1ltoz\u00e1sokat alkalmaz\u00e1si tesztekkel kell meghat\u00e1rozni.<br \/>\n\u00c1ltal\u00e1ban nem k\u00f6nny\u0171 \u00f6sszefoglalni egy egyszer\u0171 alkalmaz\u00e1si elvet. A gyantarendszer plusz a pigmentt\u00e9nyez\u0151 eset\u00e9ben a diszperg\u00e1l\u00f3szer kiv\u00e1laszt\u00e1sa t\u00fal sok param\u00e9terr\u00e9 v\u00e1lik. Ez\u00e9rt nemcsak a gazdagyanta \u00e9s a diszperg\u00e1l\u00f3szer kombin\u00e1ci\u00f3j\u00e1t, hanem a pigment \u00e9s a t\u00f6lt\u0151anyag jelleg\u00e9t is figyelembe kell venni.<\/p>\n<h2><strong>M\u00e1sodszor, a pigment t\u00f6lt\u0151anyag kiv\u00e1laszt\u00e1s\u00e1hoz<\/strong><\/h2>\n<p>Sz\u00e9nfekete \u00e9s szerves pigmentek<br \/>\nMint kor\u00e1bban eml\u00edtett\u00fck, az ipari pigmenteknek sokf\u00e9le t\u00edpusa \u00e9s fajt\u00e1ja l\u00e9tezik. A pigmentipar szerves \u00e9s szervetlen pigmentekre osztja \u0151ket. A fest\u00e9kiparban az \u00e1tl\u00e1tsz\u00f3 vasoxidot \u00e9s a kormot gyakran a szerves pigmentekkel egy\u00fctt nehezen diszperg\u00e1lhat\u00f3 pigmenteknek tekintik.<br \/>\nTov\u00e1bbi k\u00fcl\u00f6nbs\u00e9get tett\u00fcnk a nehezen diszperg\u00e1lhat\u00f3 pigmentek k\u00f6z\u00f6tt a hidrog\u00e9nk\u00f6t\u00e9sek er\u0151ss\u00e9g\u00e9nek vizsg\u00e1lat\u00e1val.<br \/>\nK\u00eds\u00e9rleteinkben egy\u00e9rtelm\u0171en ilyen sz\u00f3r\u00f3d\u00e1si eredm\u00e9nyeket l\u00e1tunk.<br \/>\nHa egy diszperg\u00e1l\u00f3szer egy r\u00f6gz\u00edtett gyanta rendszerben j\u00f3l m\u0171k\u00f6dik a korommal, akkor gyakran stabiliz\u00e1lja a ftalocianin pigmenteket is, \u00e9s elker\u00fclhetetlen\u00fcl gyenge diszperg\u00e1l\u00f3 tulajdons\u00e1gokat mutat m\u00e1s szerves pigmentekkel, p\u00e9ld\u00e1ul a DPP-v\u00f6r\u00f6ssel. M\u00e1sr\u00e9szt, ha egy diszperg\u00e1l\u00f3szer nagyon j\u00f3l diszperg\u00e1lja \u00e9s stabiliz\u00e1lja a DPP-v\u00f6r\u00f6set, a szerves iboly\u00e1t \u00e9s m\u00e1s pigmenteket, akkor \u00e1ltal\u00e1ban korom diszperg\u00e1l\u00e1s\u00e1ra haszn\u00e1lj\u00e1k, hogy a nem kedvelt barn\u00e1sv\u00f6r\u00f6s f\u00e1zist kapj\u00e1k, \u00e9s a ftalocianin pigmentek viszkozit\u00e1scs\u00f6kkent\u0151 k\u00e9pess\u00e9ge nem elegend\u0151. Ez a fajta jelens\u00e9g szinte minden diszperg\u00e1l\u00f3 gyant\u00e1ra \u00e9s diszperg\u00e1l\u00f3szerre vonatkozik. Nagyon kev\u00e9s olyan diszperg\u00e1l\u00f3szer van, amely egyszerre rendk\u00edv\u00fcl j\u00f3 teljes\u00edtm\u00e9nyt tud felmutatni a nehezen diszperg\u00e1lhat\u00f3 pigmentek fenti k\u00e9t kateg\u00f3ri\u00e1ja eset\u00e9ben. Mindig az a helyzet, hogy az egyik csoport nagyon j\u00f3, a m\u00e1sik csoport pedig kiss\u00e9 gyenge.<br \/>\nEnnek f\u0151 oka a pigment hidrog\u00e9nk\u00f6t\u00e9ses szerkezet\u00e9nek sz\u00e1ma \u00e9s er\u0151ss\u00e9ge.<br \/>\nA sz\u00e9nfekete, a ftalocianin k\u00e9k \u00e9s m\u00e1s pigmentek, a pigmentek k\u00f6z\u00f6tti f\u0151 k\u00f6lcs\u00f6nhat\u00e1si er\u0151t nem a hidrog\u00e9nk\u00f6t\u00e9s uralja, hanem m\u00e1s er\u0151k, p\u00e9ld\u00e1ul a sz\u00e9nfekete r\u00e9tegmolekul\u00e1k k\u00f6z\u00f6tti csatol\u00e1si hat\u00e1s, a ftalocianin szerkezet\u00e9nek csatol\u00e1si hat\u00e1sa, a halog\u00e9nek szerepe. A fel\u00fcletkezel\u00e9s\u00fckben hordozott pol\u00e1ris csoportok pedig f\u00fcggetlenek mag\u00e1nak a pigmentnek a szerkezet\u00e9hez k\u00e9pest.<br \/>\nA DPP \u00e1ltal k\u00e9pviselt szerves v\u00f6r\u00f6s \u00e9s lila pigmentek er\u0151s hidrog\u00e9nk\u00f6t\u00e9ssel rendelkeznek mag\u00e1nak a pigmentnek a kialak\u00edt\u00e1s\u00e1ban, ami jav\u00edtja a pigment teljes\u00edtm\u00e9ny\u00e9t, \u00e9s k\u00f6zvetlen\u00fcl befoly\u00e1solja a diszperg\u00e1l\u00f3szer hat\u00e1s\u00e1t a pigmentre, \u00e9s a hat\u00e1rfel\u00fcleten l\u00e9v\u0151 pol\u00e1ris csoportok r\u00e9szt vesznek mag\u00e1nak a pigmentnek a hidrog\u00e9nk\u00f6t\u00e9s\u00e9ben. Ezt a pigment ut\u00f3lagos feldolgoz\u00e1sa is meger\u0151s\u00edti.<br \/>\nEnnek megfelel\u0151en nem k\u00f6nny\u0171 optim\u00e1lis eredm\u00e9nyt el\u00e9rni k\u00e9t k\u00fcl\u00f6nb\u00f6z\u0151 t\u00edpus\u00fa, elt\u00e9r\u0151 bels\u0151 hat\u00e1s\u00fa pigmenttel egyidej\u0171leg, egyetlen diszperg\u00e1l\u00f3szerkezetet haszn\u00e1lva. Ezen elm\u00e9let alapj\u00e1n az is lehets\u00e9ges, hogy egy pigment a szerkezete alapj\u00e1n meghat\u00e1rozza, hogy melyik oldalhoz tartozik. P\u00e9ld\u00e1ul egy izoindolinon pigmentnek a sz\u00e9nfekete-ftalocianin csoportba kell tartoznia. A toluidinv\u00f6r\u00f6snek az ut\u00f3bbi fel\u00e9 kell hajlania.<br \/>\nA diszperg\u00e1l\u00f3szerek gyakorlati kiv\u00e1laszt\u00e1sa sor\u00e1n a nehezen diszperg\u00e1lhat\u00f3 pigmentek els\u0151 csoportja eset\u00e9ben a legjobb eredm\u00e9nyeket a k\u00f6nnyen kompatibilis gyantarendszerekkel lehet el\u00e9rni. Ha azonban a gyanta kompatibilit\u00e1s rossz, pl. h\u0151re l\u00e1gyul\u00f3 akrilok, akkor \u00faj poliakril\u00e1t diszperg\u00e1l\u00f3szerre kell v\u00e1ltani. Az er\u0151sen hidrog\u00e9nk\u00f6t\u00e9s\u0171 pigmentek m\u00e1sodik kateg\u00f3ri\u00e1ja, az er\u0151sen pol\u00e1ros PU, poli\u00e9szter \u00e9s poliakril\u00e1t eset\u00e9ben j\u00f3 eredm\u00e9nyek \u00e9rhet\u0151k el. Csak a rossz kompatibilit\u00e1s\u00fa rendszerben, a nagy polarit\u00e1s\u00fa PU \u00e9s poli\u00e9szter korl\u00e1tozott. Ebben az esetben m\u00f3dos\u00edtott poliakril\u00e1t diszperg\u00e1l\u00f3szerre kell v\u00e1ltani.<br \/>\n\u25cf A korom feket\u00e9je<br \/>\nA korom feket\u00e9je rendk\u00edv\u00fcl fontos t\u00e9ma a diszperg\u00e1l\u00f3szerek t\u00e1rgyal\u00e1sakor, \u00e9s leggyakrabban a korom feket\u00e9je ker\u00fcl sz\u00f3ba.<br \/>\nAz eddigi gyakorlat azt mutatja, hogy a m\u0171szeres \u00e9rz\u00e9kel\u00e9s nem olyan pontos, mint a szemrev\u00e9telez\u00e9s; k\u00fcl\u00f6nb\u00f6z\u0151 f\u00e9nyviszonyok mellett a feketes\u00e9g v\u00e1ltozik; k\u00fcl\u00f6nb\u00f6z\u0151 sz\u00f6gek mellett a feketes\u00e9g v\u00e1ltozik; a k\u00fcl\u00f6nb\u00f6z\u0151 diszperg\u00e1l\u00f3szerek k\u00fcl\u00f6nb\u00f6z\u0151 sz\u00e9nfeket\u00e9ket v\u00e1lasztanak, hogy k\u00fcl\u00f6nb\u00f6z\u0151 feketes\u00e9get adjanak; a nagy feketes\u00e9g\u0171 sz\u00e9nfekete masterbatch nem felt\u00e9tlen\u00fcl jav\u00edtja a sz\u00ednez\u0151er\u0151t.<br \/>\nMindez k\u00f6nnyen megmagyar\u00e1zhat\u00f3. A korom \u00e1tl\u00e1tsz\u00f3 lamell\u00e1s szerkezete + a korom f\u00e9nyelnyel\u0151 k\u00e9pess\u00e9ge miatt. Az \u00e1tl\u00e1tsz\u00f3 lamell\u00e1s szerkezet a<\/p>\n<p>3. Tit\u00e1ndioxid<br \/>\nEleinte mindenki azt hitte, hogy a tit\u00e1n-dioxid olyan k\u00f6nnyen diszperg\u00e1lhat\u00f3, hogy diszperg\u00e1l\u00f3szerekkel vagy diszperg\u00e1l\u00f3szerek n\u00e9lk\u00fcl is haszn\u00e1lhat\u00f3. Azonban m\u00e1s nehezen diszperg\u00e1lhat\u00f3 pigmentekkel val\u00f3 kever\u00e9skor a tit\u00e1n-dioxid lebeg\u0151 sz\u00edn\u0171 lesz; a magas szint\u0171 tiszta feh\u00e9r el\u0151\u00e1ll\u00edt\u00e1sakor a tit\u00e1n-dioxid hom\u00e1lyos lesz; a k\u00fcl\u00f6nleges k\u00f6vetelm\u00e9nyeket t\u00e1maszt\u00f3 term\u00e9kekben a tit\u00e1n-dioxidnak kiv\u00e1l\u00f3 fed\u0151k\u00e9pess\u00e9ggel \u00e9s feh\u00e9rs\u00e9ggel kell rendelkeznie, \u00e9s nem szabad magas h\u0151m\u00e9rs\u00e9kleten s\u00e1rgulnia; sok k\u00f6z\u00f6ns\u00e9ges ipari alkalomra nem sz\u00edvesen haszn\u00e1lnak dr\u00e1ga, magas szint\u0171 tit\u00e1n-dioxidot, vagy ak\u00e1r helyettes\u00edt\u0151 pigmentk\u00e9nt haszn\u00e1lj\u00e1k a tit\u00e1n-dioxidot; a fenti probl\u00e9m\u00e1k felkeltett\u00e9k a seg\u00e9danyag-ipart, hogy figyelmet ford\u00edtson a tit\u00e1n-dioxid diszperg\u00e1l\u00e1s\u00e1ra.<br \/>\n4. \u00c1tl\u00e1tsz\u00f3 vas-oxid<br \/>\nAz \u00e1tl\u00e1tsz\u00f3 vas-oxid r\u00e9szecskem\u00e9rete nanom\u00e9teres szinten van, \u00e9s fel\u00fclete amfoter, \u00fagy t\u0171nik, hogy k\u00f6nnyen diszperg\u00e1lhat\u00f3, ha a pigment koncentr\u00e1ci\u00f3ja alacsony, \u00e9s a sz\u00ednpaszta viszkozit\u00e1sa nagyon alacsony, de az \u00e1tl\u00e1that\u00f3s\u00e1g nem k\u00f6nny\u0171 a legjobb; \u00e9s amint kiss\u00e9 meghaladja a pigment kritikus koncentr\u00e1ci\u00f3j\u00e1t, a sz\u00ednpaszta azonnal bes\u0171r\u0171s\u00f6dik olyan m\u00e9rt\u00e9kben, hogy nem lehet keverni, ami a homokmalom hat\u00e9konys\u00e1g\u00e1nak cs\u00f6kken\u00e9s\u00e9t eredm\u00e9nyezi.<br \/>\nA vas-oxid \u00e1tl\u00e1tsz\u00f3s\u00e1ga, hasonl\u00f3an a korom feket\u00e9j\u00e9hez, \u00fagy t\u0171nik, mindig tov\u00e1bb javul. K\u00eds\u00e9rleteink azt mutatt\u00e1k, hogy egy \u00e1ltalunk m\u00e1r j\u00f3 \u00e1tl\u00e1tsz\u00f3s\u00e1g\u00fanak \u00edt\u00e9lt minta 45\u00b0-os n\u00e9zetben m\u00e9g mindig er\u0151sen hom\u00e1lyos lehet;<br \/>\nSz\u00f3val, mit \u00e9rdemes haszn\u00e1lni? Ez a k\u00e9rd\u00e9s egy m\u00e1sik megfoghatatlan dilemma.<br \/>\nAz adal\u00e9kanyaggy\u00e1rt\u00f3 c\u00e9gek szint\u00e9n saj\u00e1t programokat k\u00edn\u00e1lnak. Ez a k\u00f6zz\u00e9tett aj\u00e1nl\u00e1sokb\u00f3l is kider\u00fcl.<br \/>\nA gyantarendszerek k\u00fcl\u00f6nbs\u00e9geib\u0151l ad\u00f3d\u00f3 szelektivit\u00e1ssal egy\u00fctt t\u00f6bb aj\u00e1nlott megold\u00e1s is l\u00e9tezik.<br \/>\n5. Matting Powder<br \/>\nMaga a matt\u00edt\u00f3por nem neh\u00e9z eloszlatni. A gy\u00e1rt\u00e1skor el\u0151mikroniz\u00e1lj\u00e1k. Egyesek fel\u00fcleti viaszkezel\u00e9ssel vannak ell\u00e1tva, m\u00e1sok nem, pol\u00e1ris hidroxilcsoportokkal. A matt\u00edt\u00f3porok diszperg\u00e1l\u00e1s\u00e1nak probl\u00e9m\u00e1ja azonban az alkalmaz\u00e1s k\u00f6vetelm\u00e9nyeib\u0151l ad\u00f3dik.<br \/>\nEgyesek megk\u00f6vetelik, hogy a matt bevonatok egyetlen k\u00e9sz\u00edtm\u00e9ny seg\u00edts\u00e9g\u00e9vel k\u00fcl\u00f6nb\u00f6z\u0151 alkalmaz\u00e1si m\u00f3dszerekhez igaz\u00edthat\u00f3k legyenek, pl. az egyenletes f\u00e9nyess\u00e9g \u00e9rdek\u00e9ben ecsetel\u00e9ssel t\u00f6rt\u00e9n\u0151 permetez\u00e9s;<br \/>\nEgyesek megk\u00f6vetelik, hogy a matrac egyenletess\u00e9ge ne s\u00e9r\u00fclj\u00f6n magas h\u0151m\u00e9rs\u00e9klet \u00e9s magas p\u00e1ratartalom mellett;<br \/>\nVannak k\u00f6vetelm\u00e9nyek az alacsony viszkozit\u00e1s\u00fa k\u00f6r\u00fclm\u00e9nyekre, a matt\u00edt\u00f3 por a legkisebb telep\u00fcl\u00e9ssel rendelkezik;<br \/>\nEgyesek a legnagyobb \u00e1tl\u00e1that\u00f3s\u00e1got ig\u00e9nylik;<br \/>\nN\u00e9h\u00e1nyan kiv\u00e1l\u00f3 s\u00farl\u00f3d\u00e1si ellen\u00e1ll\u00e1st ig\u00e9nyelnek, \u00e9s a kem\u00e9ny kvarcpor bevezet\u00e9se, \u00edgy egy\u00fctt kell diszperg\u00e1lni, \u00e9s \u00edgy tov\u00e1bb.<br \/>\nEz a diszperg\u00e1l\u00f3szerek k\u00f6vetkezetes v\u00e1ltoz\u00e1s\u00e1hoz vezetett. A hagyom\u00e1nyos nedves\u00edt\u0151- \u00e9s diszperg\u00e1l\u00f3szerekt\u0151l kezdve a speci\u00e1lis polimer PU diszperg\u00e1l\u00f3szerekig, a foszf\u00e1t\u00e9szterekig, a foszf\u00e1t\u00e9szterek amins\u00f3iig \u00e9s m\u00e1s speci\u00e1lis polimerekig mindet haszn\u00e1lt\u00e1k a matt\u00edt\u00f3 porok diszperg\u00e1l\u00e1s\u00e1ra. Melyik a legjobb? Mint kor\u00e1bban eml\u00edtett\u00fck, ez att\u00f3l f\u00fcgg, hogy milyen ig\u00e9nyei vannak. Nem v\u00e1rhatja el, hogy egy diszperg\u00e1l\u00f3szer egyszerre oldja meg az \u00f6sszes fenti k\u00f6vetelm\u00e9nyt.<br \/>\nA nedves\u00edt\u0151szer elvileg jav\u00edtja a v\u00e9gs\u0151 rendszer \u00e1raml\u00e1si k\u00e9pess\u00e9g\u00e9t; a nagy relat\u00edv molekulat\u00f6meg\u0171 diszperg\u00e1l\u00f3szer megakad\u00e1lyozza a le\u00fcleped\u00e9st \u00e9s szab\u00e1lyozza a matt\u00edt\u00f3por mozg\u00e1s\u00e1t a nedves filmben, \u00edgy az k\u00f6nnyebben orient\u00e1lhat\u00f3, hogy egyenletes matt\u00edt\u00e1st eredm\u00e9nyezzen.<br \/>\n6. F\u00e9mes csill\u00e1mpigmentek, p\u00e9ld\u00e1ul alum\u00edniumpor \u00e9s gy\u00f6ngyh\u00e1zf\u00e9ny\u0171 por.<br \/>\nEgy gyakori megold\u00e1s a nedves\u00edt\u0151szer.<br \/>\nA gyant\u00e1val kompatibilis polimer diszperg\u00e1l\u00f3szerekkel is diszperg\u00e1lhat\u00f3k. Mozg\u00e1suk is szab\u00e1lyozhat\u00f3. Vannak p\u00e9ld\u00e1k sikeres recept\u00far\u00e1kra ezekre.<br \/>\n7. Nanoszint\u0171 tit\u00e1n-dioxid \u00e9s m\u00e1s nanodiszperzi\u00f3k<br \/>\nEbben az esetben a polimer PU-k biztos\u00edtj\u00e1k a legjobb stabiliz\u00e1l\u00f3 hat\u00e1st, ha kompatibilisek. Ellenkez\u0151 esetben akril alap\u00fa diszperg\u00e1l\u00f3szerre van sz\u00fcks\u00e9g.<br \/>\n8. A f\u0151 diszperg\u00e1l\u00f3szer meghat\u00e1roz\u00e1sa<br \/>\n\u00c1ltal\u00e1ban egy meghat\u00e1rozott gyanta- \u00e9s old\u00f3szer-rendszerben a MANTOS ezt a m\u00f3dszert aj\u00e1nlja a megfelel\u0151 f\u0151 diszperg\u00e1l\u00f3szer kiv\u00e1laszt\u00e1s\u00e1ra:<br \/>\nEl\u0151sz\u00f6r is, n\u00e9gy pigment diszperg\u00e1l\u00e1sa: er\u0151sen pigment\u00e1lt korom, tit\u00e1n-dioxid, DPP-v\u00f6r\u00f6s \u00e9s k\u00f6z\u00f6ns\u00e9ges vasoxid-v\u00f6r\u00f6s.<br \/>\n\u2460 \u00c9rt\u00e9kelje, hogy a diszperg\u00e1l\u00f3szer okoz-e neh\u00e9zs\u00e9geket e n\u00e9gy szab\u00e1lyos mesterkever\u00e9k el\u0151\u00e1ll\u00edt\u00e1sa sor\u00e1n, pl. elegend\u0151-e a viszkozit\u00e1scs\u00f6kkent\u0151 viselked\u00e9s.<br \/>\n\u2461 \u00c9rt\u00e9kelje a sz\u00ednterjed\u00e9s er\u0151ss\u00e9g\u00e9t.<br \/>\n(iii) \u00c9rt\u00e9kelje a t\u00e1rol\u00e1si stabilit\u00e1st (\u00e1raml\u00e1si lemez \u00e9s termikus t\u00e1rol\u00e1s).<br \/>\nHa egy diszperg\u00e1l\u00f3szer j\u00f3 diszperg\u00e1l\u00f3 k\u00e9pess\u00e9get mutat a fenti n\u00e9gy pigment eset\u00e9ben ebben az adott rendszerben, akkor alapvet\u0151en alkalmas a k\u00fcl\u00f6nb\u00f6z\u0151 m\u00e1s pigmentek eset\u00e9ben is. Ezut\u00e1n kiv\u00e1laszthat\u00f3 a rendszer f\u0151 diszperg\u00e1l\u00f3szer\u00e9nek. Term\u00e9szetesen a speci\u00e1lis pigmentek, p\u00e9ld\u00e1ul az \u00e1tl\u00e1tsz\u00f3 vasoxid-pigmentek eset\u00e9ben m\u00e9g mindig lehet kiv\u00e9telt tenni.<br \/>\nEz a m\u00f3dszer k\u00e9t k\u00fcl\u00f6nb\u00f6z\u0151 diszperg\u00e1l\u00f3szer kombin\u00e1lt teljes\u00edtm\u00e9ny\u00e9nek \u00e9rt\u00e9kel\u00e9s\u00e9re is haszn\u00e1lhat\u00f3, hogy megtal\u00e1ljuk a megfelel\u0151 pigmentt\u00edpust az alkalmaz\u00e1shoz.<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>How buyers usually evaluate coating and ink additives<\/h2>\n<p>Additive selection is usually most effective when the team defines the defect first and then screens compatibility, dosage range, and process stage. That is often much more reliable than choosing only by chemistry family or by a single dramatic lab result.<\/p>\n<ul>\n<li><strong>Start from the defect, not the additive name:<\/strong> wetting loss, crater, microfoam, and instability often need different solutions even inside the same formula.<\/li>\n<li><strong>Check compatibility at the intended dosage:<\/strong> the strongest additive can still be the wrong commercial choice if it narrows the process window too much.<\/li>\n<li><strong>Review the stage of use:<\/strong> some products are most useful during grind, while others matter more during let-down, filling, or final application.<\/li>\n<li><strong>Balance cure or film quality with defect control:<\/strong> the right additive fixes the problem without sacrificing adhesion, gloss, or appearance.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> A balanced defoamer reference for waterborne coatings and many general foam-control screens.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> A stronger process-defoaming option when persistent foam survives harsher conditions.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071<\/a>:<\/strong> Useful when organosilicone wetting support is needed in a broad application screen.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why does an additive that looks powerful in a beaker sometimes fail in production?<\/strong><br \/>Because shear, temperature, substrate, and the full formula can all change the way the additive performs under real process conditions.<\/p>\n<p><strong>Should the most aggressive additive always be preferred?<\/strong><br \/>Not usually. The best additive is the one that solves the real defect while preserving the broadest safe operating window.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>I. Selection of main resin for dispersion Resin, especially the resin for grinding, plays a key role in the preparation of colour paste, and the role of the main resin<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-6181","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to choose a dispersant? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"I. 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