Thickeners yog hom tshiab ntawm cov khoom siv polymer uas tau tsim sai heev hauv xyoo tas los no. Lawv feem ntau yog siv los ua kom cov viscosity los yog sib xws ntawm cov khoom, thiab yog tus cwj pwm los ntawm kev siv me me, cov nyhuv thickening tseem ceeb, thiab siv tau yooj yim. Lawv tau siv dav hauv kev lag luam, luam ntawv thiab dyeing, tshuaj pleev ib ce, khoom noj khoom haus additives, roj extraction, papermaking, thiab tawv ua lag luam.
Industrial thickeners pib nyob rau hauv lub xyoo pua 20th. Xyoo 1953, Coodrich tau tshaj tawm thawj cov khoom siv hluavtaws ua kom zoo nkauj -polyacrylic acid thickeners- rau lub khw. Xyoo 1960, sodium polyacrylate tau pib siv rau hauv kev lag luam khoom noj txawv teb chaws. Tam sim no, W / O hom polyacrylic acid latex, raws li ib qho aqueous theem thickener, yog dav siv nyob rau hauv textile printing pastes, dyeing thiab xov, thiab industrial coatings.
Nyob rau hauv nruab nrab - xyoo 1970, kuv lub teb chaws pib tshawb fawb txog hluavtaws thickeners. Nyob rau hauv xyoo tas los no, ntau cov khoom siv hluavtaws tau ua tiav hauv tsev, feem ntau yog anionic hluavtaws thickeners, xws li hluavtaws thickener KG-201 tsim los ntawm University of Science thiab Technology ntawm Tuam Tshoj thiab hluavtaws thickener PF tsim los ntawm Shenyang Chemical Research Institute. Hla-txuas polyacrylic acid latex yog dav siv los ua cov thickener rau txheej thiab luam ntawv. Txawm li cas los xij, hom anionic thickener no tseem muaj qee qhov tsis zoo, xws li tsawg dua qhov zoo tshaj plaws electrolyte tsis kam, thixotropic zog ntawm pigments, thiab xim tawm los thaum luam ntawv. Hauv xyoo 1980, polyurethane associative thickeners tau tsim. Tam sim no, tsuas yog ob peb lub tuam txhab nto moo thoob ntiaj teb xws li ICI, DuPont, Sun Chemical, thiab KYK tsim cov khoom no, thiab lawv cov thev naus laus zis ntau lawm tau tswj hwm nruj, ua rau tus nqi monopolistic. Kev tshawb fawb txog dej polyurethane thickeners hauv kuv lub teb chaws pib lig. Nyob rau hauv xyoo tas los no, cov tuam txhab lag luam hauv tsev tau xyaum cov khoom lag luam txawv teb chaws thiab tsim qee yam, tab sis cov txiaj ntsig tau ua tsis zoo, thiab cov khoom lag luam tsis tau raug serialized, txwv lawv daim ntawv thov rau cov khoom qis.
