Letlalo la PU{{0}ka metsie sebelisa H2O e le mokhoa o ka sehloohong oa ho hasana nakong ea ho kopana, ho nkela Dimethylformamide (DMF) le toluene sebaka. Ts'ebetso ena ea aqueous polymerization e fihlela masala a DMF a lefela, e netefatsa hore substrate e feta ka thata meeli ea EU REACH SVHC ntle le ho senya matla a ho ebola a leoatle-island microfiber matrix.
Polymerization and Chemical Structure (DMF vs. H₂O)
Sehlapolli se tloaelehileng{{0}se thehiloeng polyurethane e itšetlehile ka lihlapolli tse chefo tse halogenated ho qhibiliha PU resin pele e koahela polyethylene terephthalate (PET) fiber base. Nakong ea ho folisa mocheso ka likhato tse 150, li-solvents tsena lia fetoha mouoane, 'me li ntša likhahla tse phahameng tsa Volatile Organic Compounds (VOCs) le ho tšoasa DMF e setseng ka har'a li-micropores tsa thepa.
Ka lehlakoreng le leng, boenjiniere asolvent free synthetic letlaloe itshetlehile ka metsi-dispersed aliphatic polyurethane. Mokhoa oa ho phekola o etsa mouoane o hloekileng oa metsi, o tlosa mosi o chefo ha o ntse o theha marang-rang a khokahanyo-ea polymer. Matrix e latelang e lekanya phapang ea lik'hemik'hale le mochini bakeng sa theko ea Mokhahlelo oa 1 o hlahlobangeco{{0}lebenkele la letlalo la faux le bonolophetoho.
| Teko ea Parameter | Solvent{{0}E ipapisitse le PU Letlalo | Letlalo la PU{{0}ka metsi | Teko Protocol |
| Bohareng ba Phahamiso | DMF / Toluene / MEK | H₂O (Metsi a Hloekileng) | Tlhahlobo ea Lik'hemik'hale |
| Masala a DMF | 500 - 1500 ppm | 0 ppm (ha e{1}}bonahala) | EN 16778 |
| Kakaretso ea Phallo ea VOC | >300 dikg/g | Ka tlase ho kapa ho lekana le 10 mg/kg | VDA 277 |
| Hydrolysis Resistance | 1 - 2 Libeke | >Libeke tse 5 (70 degree, 95% RH) | SATRA TM344 |
| Matla a ho Ebola | Ka tlase ho kapa ho lekana le 20 N/3cm | E kholo ho feta kapa e lekana le 30 N/3cm | ISO 2411 |
Theko le Tsebiso ea QA:Na u fetola tsela ea hau ea tlhahiso ho ea ho noto-li-substrate tsa DMF? WINIW International Co., Limited e fana ka traceability e felletseng ea lik'hemik'hale le data ea 'mele e netefalitsoeng ea ISO 9001.
Kopa Physical Swatches & Lab TDS Tlaleho ka kotloloho ho tsoa karolong ea rona ea PU Leather.
Bophelo bo Botle ba Mosebetsing le Tumellano ea Lefatše ea Tikoloho
Tlhahiso e ngata ea lisebelisuoa tse theohileng{{0}e pepesetsa basebetsi ba lifeme kotsing e matla ea ho phefumoloha le ho ba le chefo ea letlalo. Ka ho amohela ka tieo coagulation ea metsi, WINIW International Co., Limited e tlosa ka botlalo ho pepeseha ha basebetsi ho litšila tse kotsi tsa moea (HAPs) moleng oa ho roala.
Bakeng sa li-CPO, phetoho ena ea lik'hemik'hale e tlosa litšitiso tsa taolo. E netefalitsoengsolvent free synthetic letlaloe feta litemoso tsa California Proposition 65 le EU REACH Annex XVII lithibelo. Lits'ebetsong tsa likoloi, ho ba sieo ha lihlapolli tse setseng ho netefatsa hore thepa e feta monko oa VDA 277 (e ka tlase kapa e lekanang le Kereiti ea 3.0), e thibelang lik'hemik'hale ho{4}}ho tsoa ka gase le moholi oa moea (DIN 75201) mochesong o phahameng oa koloi.
Lipotso Tse Botsoang Khafetsa
P: Phapano ke efe lipakeng tsa-borne PU le solvent-based PU?
A: PU-e tsamaisoang ke metsi e sebelisa metsi e le mokhoa oa ho hasana, ho fumana masalla a 0 ppm DMF le a Ka tlase ho kapa ho lekana le 10 mg/kg VOCs. Solvent-based PU e hloka lik'hemik'hale tse chefo joalo ka Dimethylformamide le toluene bakeng sa ho kopana, ho siea masalla a kotsi a qabeletsoeng ka har'a polima matrix.
P: Na WBPU e lumellana le matla a ho ebola a letlalo la setso la maiketsetso?
A: Yes. Aqueous aliphatic polyurethane forms a highly cross-linked network within the sea-island PET matrix. This ensures the material consistently maintains an ISO 2411 peeling strength of ≥30 N/3cm and endures >100,000 Martindale abrasion rubs.
P: Na WBPU ea hlokahala bakeng sa tumellano ea REACH Europe?
A: Leha e laotsoe haholo, PU e tloaelehileng hangata e hloleha ho fokotsa meeli ea EU REACH ka lebaka la litaba tse phahameng tsa DMFa. Ho sebelisa WBPU ho tiisa-maemo a sa bonahaleng a Lintho tsohle tse thibetsoeng tsa Matšoenyeho a Phahameng ka ho Fetisisa (SVHCs), e leng ho potlakisang ka kotloloho tumello ea thepa ea Europe bakeng sa li-OEM tsa lefats'e.
