TGIC m'malo mwa Chemistries mu zokutira ufa-Hydroxyalkylamide (HAA)
Hydroxyalkylamide(HAA) TGIC Replacement Chemistries
Popeza tsogolo la TGIC silikudziwika, opanga akufunafuna ina yofanana nayo. Mankhwala a HAA monga Primid XL-552, opangidwa ndi odziwika ndi Rohm ndi Haas, adayambitsidwa. Choyipa chachikulu pa zowumitsa zotere ndikuti, popeza njira yawo yochizira ndi kakondo, makanema omwe amafika makulidwe opitilira 2 mpaka 2.5 mils (ma microns 50 mpaka 63) amatha kuwonetsa kutulutsa mpweya, kupindika, komanso kusayenda bwino ndi kusanja. Izi ndizowona makamaka ngati mankhwalawa amagwiritsidwa ntchito ndi ma polyesters wamba a carboxy opangidwira kuphatikiza TGIC.
Mibadwo yatsopano ya ma polyesters a carboxy, opangidwa kapena opangidwa ndi EMS, Hoechst Celanese, ndi Ruco, kuti agwiritsidwe ntchito ndi Primid XL-552, amachepetsa mavuto ambiriwa, komabe. imapangidwa bwino pogwiritsa ntchito miyeso yochepera stoichiometric ya zowumitsa. Zotsatira zomwezo zitha kupezedwa powonjezera kachulukidwe kakang'ono ka isophorone diisocyanate (IPDI) ku stoichiometric Primid system, yomwe imagwira bwino ntchito.ralamapeza zina mwa HAA. Kuphatikiza apo, zomwe zasonkhanitsidwa pambuyo powonetsa m'badwo watsopano wa carboxy polyester/HAA komanso kachitidwe kakale ka carboxyl polyester TGIC kupita ku Florida kuwala kwa dzuwa kwa zaka ziwiri zikuwonetsa kuti ma chemistrieswa ali ndi nyengo mofanana. Ndipo kuyesa kwa Florida komwe tidachita kukuwonetsa kuti mitundu yosiyanasiyana yamitundu ya Primid imawonetsa kusinthasintha kwapang'onopang'ono kwa makina wamba a TGIC omwe ali ndi ma pigmentation ofanana ndi zodzaza.
Zina zowonjezera zamtundu wa surfactant zitha kulola kuti makanema amange mpaka 3 mils (75 microns) osawonetsa kutulutsa mpweya kapena zovuta zina zazikulu zapamtunda. Mankhwala a diphenoxy akuphatikizidwa ndi benzoin mu carboxy polyester HAA chemistries kuti mafilimu awoneke bwino komanso kuchepa kwachikasu.
Makina ena amtundu watsopano wa carboxy polyester / HAA amatha kuchiritsidwa kwathunthu kapena mokwanira pa kutentha kotsika mpaka 138C kwa mphindi 20, bola ngati ma ratios a stoichiometric resin to harder agwiritsidwa ntchito. Ufa wopangidwa kuchokera kumakinawa ukhoza kukhala ngati zokutira pazitsulo zopanda zitsulo.
Hydroxyalkylamide (HAA)