Ukwethulwa kweqembu lesibili le-acrylate, i-ethylene glycol diacrylate (No. 15), ku-2-hydroxyethyl acrylate (No. 11) ayizange ilethe ushintsho olukhulu kuphunga.Owokuqala ukhombisa iphunga lamakhowe, kanti lo wakamuva ukhombisa iphunga lamakhowe nobulembu.Nokho, ku-1,2-propanediol diacrylate (No. 16) ngemva kokwethulwa kweqembu lesibili le-acrylate ku-acrylic acid-1-hydroxyisopropyl ester (No. 10) / acrylic Acid-2-Hydroxypropyl ester (No. 12) , i-geranium nephunga legesi elilula le-monoester lanyamalala ku-diester, futhi iphunga likagalikhi neglue lakhiqizwa ku-diester.
Phakathi kwawo wonke amaketango aqondile ama-n-alkyl acrylates, i-ethyl acrylate (No. 2) ibonise umkhawulo wephunga ophansi kakhulu, owawungu-0.83ng/lair kuphela.Ngokukhula kobude beketango, umngcele wanda kancane, futhi i-n-butyl acrylate (No. 4) ifinyelele ku-2.4ng / lair.Kodwa-ke, lo mthetho awusebenzi ngaso sonke isikhathi, ngoba umkhawulo we-methyl acrylate (No. 1) oneketanga elifushane phakathi kwama-monomers amane uphakeme kakhulu (11 ng/lair).Uma kuqhathaniswa nama-acrylate monomers ahambisanayo agcwele i-ethyl acrylate (No. 2) ne-propyl acrylate (No. 3), i-vinyl acrylate (No. 5) ne-propenyl acrylate (No. 6) equkethe amabhondi ayi-unsaturated abonisa izikhathi ezingu-20 nezingu-3.5 iphunga eliphansi lemibundu. .Lokhu kubonisa ukuthi ukwethulwa kwezibopho eziphindwe kabili ezingasetshenzisiwe ku-carbon chain kuzokwandisa kakhulu umkhawulo wephunga futhi kunciphise umbono wephunga.Nokho, uma ibhondi ephindwe kabili engagcwalisiwe ingekho eqenjini letheminali, umphumela awubonakali.Isibonelo, umkhawulo wephunga we-acrylic acid-3- (z) pentene ester (No. 7) kuphela (1.3 ng/lair).
Phakathi kwawo wonke ama-alkyl acrylate esters, i-2-ethylhexyl acrylate (No. 13) ibonise umkhawulo wephunga ophakeme kakhulu we-20ng/lair, owawuhlobene nokusebenzisana okubuthakathaka phakathi kwe-2-ethylhexyl kanye nokwamukela iphunga ngenxa yomphumela wokuvinjelwa kwe-steric we-2-ethylhexyl.Umkhawulo ophezulu wephunga we-2-ethylhexyl acrylate kanye nokusetshenziswa kwayo ukuthuthukisa ukuthamba nokuguquguquka kwe-acrylic resin dispersion kuyenza ifanelekele ukusetshenziswa njengesithasiselo noma i-comonomer embotsheni yephunga eliphansi kanye nezinto ezinamathelayo.Kodwa-ke, ukuthintana isikhathi eside ne-2-ethylhexyl acrylate kungase kubangele isimila noma umdlavuza, futhi umkhawulo wayo ophezulu wephunga ungase ube yinto engalungile, ngoba ngeke ibonwe ngumzimba womuntu.
Umkhawulo wephunga we-acrylate equkethe i-cyclopentane ne-cyclohexane (No. 17 kanye no-18) awukho ngaphansi kwalowo we-non-cycloalkyl enenombolo efanayo yama-athomu ekhabhoni.Ngesikhathi esifanayo, iphunga elimnandi le-cyclopentane acrylate (No. 17) laliphindwe izikhathi ezingu-30 kune-cyclohexane acrylate (No. 18).
Ku-2-hydroxyethyl acrylate (No. 11) kanye ne-2-hydroxy-n-propyl acrylate (No. 12), ukwethulwa kwe-hydroxyl esakhiweni kwathuthukisa kakhulu umkhawulo wephunga, owawuyi-178 kanye ne-106ng / lair ngokulandelana, okwenza iphunga liphansi kakhulu.Umkhuba ofanayo ungabonakala kumehluko we-odor threshold phakathi kwe-sec butyl acrylate (No. 8) kanye ne-1-hydroxyisopropyl acrylate (No. 10).
Ngokwethulwa kwe-SEC butyl, umkhawulo wephunga we-acrylate wehliswa kakhulu waba ngu-0.073ng/lair kuphela, okhombisa iphunga eliphansi kakhulu phakathi kwawo wonke ama-alkyl acrylates, okungukuthi, iphunga elinamandla kakhulu.
Phakathi kwama-monomer angu-20 anqunyiwe, i-2-methoxyphenyl acrylate (No. 19) ibonise umkhawulo wephunga ophansi kakhulu, owawungu-0.068ng/lair kuphela.Umkhawulo wephunga we-2-methoxyphenyl ester, esetshenziswa kabanzi njengesisekelo embonini yokudla kanye ne-flavour industry, ngu-0.088ng/lair.Lokhu kubonisa ukuthi ama-ester amabili anesakhiwo se-2-methoxyphenyl adlala indima ekwamukeleni iphunga elifanayo.
Patrick Bauer kanye nocwaningo lwabanye kulawa ma-acrylate monomers angu-20 lubonise ukuthi ama-monomers ama-short chain abonisa iphunga elifana nesulfure, igesi elula nesweli, kuyilapho ama-monomer amaketango amade abonisa iphunga elifana namakhowe, ama-geraniums kanye nezaqathi.Wonke ama-acrylate monomers abonise i-threshold yephunga eliphansi, okusho ukuthi, wonke ayenephunga elikhulu.Imikhawulo yephunga ye-SEC butyl acrylate ne-2-methoxyphenyl acrylate ibiphansi kakhulu, ikhombisa iphunga elinamandla.I-2-hydroxyethyl acrylate kanye ne-2-hydroxypropyl acrylate yayinomkhawulo ophezulu wephunga kanye nephunga eliphansi kakhulu.
Isikhathi sokuthumela: Jun-07-2022