Lik'hemik'hale tse ncha tsa TGIC ka ho roala phofo-Hydroxyalkylamide(HAA)
Hydroxyalkylamide(HAA) TGIC Replacement chemistries
Kaha bokamoso ba TGIC bo sa tsitsa, bahlahisi ba ntse ba batla e tšoanang le eona. Litlhare tsa HAA tse kang Primid XL-552, tse ntlafalitsoeng le tse rekiloeng ke Rohm le Haas, li se li hlahisitsoe. Tšabo e ka sehloohong ho li-harderer tse joalo ke hore, kaha mokhoa oa bona oa ho phekola ke karabelo ea condensation, lifilimi tse hahang ka botenya bo fetang limilimithara tse 2 ho isa ho tse 2.5 (50 ho isa ho li-microns tse 63) li ka bonts'a ho tsoa mali, ho phunya, le phallo e mpe le ho lekana. Sena ke 'nete haholo ha litlhare tsena li sebelisoa le polyester e tloaelehileng ea carboxy e etselitsoeng motsoako oa TGIC.
Meloko e mecha ea polyester ea carboxy, e ntlafalitsoeng kapa e ntseng e ntlafatsoa ke EMS, Hoechst Celanese, le Ruco, bakeng sa tšebeliso le Primid XL-552, e fokotsa boholo ba mathata ana, leha ho le joalo. e ntlafatsoa ka ho sebelisa chelete e ka tlase ho stoichiometric ea harderer. Liphetho tse tšoanang li ka finyelloa ka ho kenyelletsa palo e nyane ea isophorone diisocyanate (IPDI) e koetsoeng ho sistimi e felletseng ea stoichiometric Primid, e sebetsang hantle.rale fana ka tse ling tsa HAA. Ho feta moo, lintlha tse bokelletsoeng ka mor'a ho pepesa moloko o mocha oa carboxy polyester/HAA le mokhoa oa setso le o tsoetseng pele oa carboxyl polyester TGIC ho Florida ka lilemo tse 2 o bontša hore lik'hemik'hale tsena tsa leholimo li tšoana hantle. 'Me tlhahlobo ea Florida eo re e entseng e bonts'a hore mefuta e fapaneng ea litsamaiso tsa Primid tsa mebala li bonts'a ho fokotseha ho fokolang ha khanya ho feta lits'ebetso tse tloaelehileng tsa TGIC tse nang le mebala e ts'oanang le li-filler content.
Li-additives tse ling tsa mofuta oa surfactant li ka lumella lifilimi ho haha ho fihla ho 3 mils (75 microns) ntle le ho bonts'a ho tsoa kapa mathata a mang a maholo a holim'a metsi. Metsoako ea diphenoxy e ntse e kopanngoa le benzoin lik'hemik'hale tsa carboxy polyester HAA bakeng sa ponahalo e ntle ea filimi le ho fokotseha ha mosehla.
Lisebelisoa tse ling tsa moloko o mocha oa carboxy polyester / HAA li khona ho phekoloa ka botlalo kapa ka ho lekaneng mocheso o ka tlaase ho 138C ka metsotso e 20, ha feela ho sebelisoa li-ratios tse feletseng tsa stoichiometric resin ho harderer. Li-powder tse entsoeng ho tsoa litsing tsena li na le menyetla ea ho roala li-nonmetallic substrates.
Hydroxyalkylamide(HAA)