Ukulungiswa kwe-epoxy acrylate ethambileyo nethambileyo kunye nokusetyenziswa kwayo kwiingubo ezinyangekayo ze-UV

Abaphandi bafumanise ukuba ukuguqulwa kwe-epoxy acrylate (EA) nge-carboxyl-terminated intermediate kwandisa ukuguquguquka kwefilimu kwaye kunciphisa i-viscosity ye-resin. Olu phononongo lukwabonisa ukuba izinto ezisetyenzisiweyo azibizi kakhulu kwaye zifumaneka lula.

I-Epoxy acrylate (EA) okwangoku yeyona oligomer isetyenziswa kakhulu enyangwa yi-UV ngenxa yexesha layo elifutshane lokunyanga, ubulukhuni obuphezulu bokugquma, ipropathi entle yoomatshini, kunye nokuzinza kobushushu. Ukujongana neengxaki zokubuthathaka okuphezulu, ukuguquguquka okungekuhle, kunye nokuxinana okuphezulu kwe-EA, i-oligomer ye-epoxy acrylate enyangwa yi-UV ene-viscosity ephantsi kunye nokuguquguquka okuphezulu yalungiswa yaza yasetyenziswa kwiingubo ezinyangwa yi-UV. I-carboxyl terminated intermediate efunyenwe yi-reaction ye-anhydride kunye ne-diol yasetyenziselwa ukuguqula i-EA ukuphucula ukuguquguquka kwefilimu enyangwayo, kwaye ukuguquguquka kwalungiswa ngobude bekhonkco lekhabhoni lee-diol.

Ngenxa yeempawu zazo ezibalaseleyo, ii-epoxy resins zisetyenziswa kakhulu kushishino lokugquma ngaphezu kwalo naluphi na olunye uhlobo lwe-binder. Kwincwadi yabo entsha yesalathiso ethi “Epoxy Resins”, ababhali uDornbusch, uChrist noRasing bachaza iziseko zekhemistri yeqela le-epoxy kwaye basebenzisa iindlela ezithile zokuchaza ukusetyenziswa kwee-epoxy kunye nee-phenoxy resins kwiingubo zoshishino – kuquka ukhuseleko lokugqwala, iingubo zomgangatho, iingubo zomgubo kunye neengubo zangaphakathi zeetini.

I-resin viscosity incitshisiwe ngokutshintsha i-E51 kancinci nge-binary glycidyl ether. Xa kuthelekiswa ne-EA engatshintshwanga, i-resin viscosity elungiselelwe kolu phononongo iyancipha ukusuka kwi-29800 ukuya kwi-13920 mPa s (25°C), kwaye ukuguquguquka kwefilimu ecociweyo kuyanda ukusuka kwi-12 ukuya kwi-1 mm. Xa kuthelekiswa ne-EA eguquliweyo ethengiswayo, izinto ezisetyenzisiweyo kolu phononongo zibiza kancinci kwaye kulula ukuzifumana ngobushushu bokusabela obungaphantsi kwe-130°C, kusetyenziswa inkqubo elula yokwenza, kwaye akukho zinyibilikisi zendalo.

Olu lwazi lupapashwe kwiJournal of Coatings Technology and Research, uMqulu 21, ngoNovemba 2023.