Ukulungiswa kwe-viscosity ephansi kanye nokuguquguquka okuphezulu kwe-epoxy acrylate kanye nokusetshenziswa kwayo ezimbotsheni ezilaphekayo ze-UV

Abacwaningi bathola ukuthi ukuguqulwa kwe-epoxy acrylate (EA) nge-carboxyl-terinated intermediate kukhulisa ukuguquguquka kwefilimu futhi kunciphisa i-viscosity ye-resin. Ucwaningo luphinde lufakazele ukuthi izinto zokusetshenziswa ezisetshenziswayo azibizi futhi zitholakala kalula.

I-Epoxy acrylate (EA) njengamanje iyi-oligomer esetshenziswa kakhulu e-UV eyelaphekayo ngenxa yesikhathi sayo esifushane sokwelapha, ubulukhuni bokumboza okuphezulu, impahla eyimishini ehamba phambili, nokuzinza kwe-thermal. Ukuze kubhekwane nezinkinga zokuqina okuphezulu, ukuguquguquka okungekuhle, kanye ne-viscosity ephezulu ye-EA, i-oligomer ye-epoxy acrylate e-UV ene-viscosity ephansi kanye nokuguquguquka okuphezulu yalungiswa futhi yafakwa ezimpahleni ezelaphekayo ze-UV. I-carboxyl enqanyuliwe okumaphakathi etholwe ukusabela kwe-anhydride ne-diol yasetshenziselwa ukuguqula i-EA ukuze kuthuthukiswe ukuguquguquka kwefilimu eselashiwe, futhi ukuguquguquka kwalungiswa ngobude beketango lekhabhoni lama-diols.

Ngenxa yezakhiwo zabo ezivelele, ama-epoxy resins asetshenziswa kakhulu embonini yokumboza cishe kunanoma yisiphi esinye isigaba se-binder. Encwadini yabo entsha yereferensi ethi "Epoxy Resins", abalobi uDornbusch, uKristu kanye noRasing bachaza izinto eziyisisekelo zekhemistri yeqembu le-epoxy futhi basebenzise ukwakheka okuqondile ukuchaza ukusetshenziswa kwe-epoxy ne-phenoxy resins ekugqokeni kwezimboni - okufaka ukuvikelwa kokugqwala, ukugqoka phansi, ukumbozwa kwe-powder kanye ne-internal can coatings.

I-resin viscosity yehliswa ngokufaka ingxenye ye-E51 esikhundleni se-binary glycidyl ether. Uma kuqhathaniswa ne-EA engashintshiwe, i-viscosity ye-resin elungiselelwe kulolu cwaningo iyancipha kusukela ku-29800 kuya ku-13920 mPa s (25 ° C), futhi ukuguquguquka kwefilimu ephulukisiwe kukhuphuka kusuka ku-12 kuya ku-1 mm. Uma kuqhathaniswa ne-EA eguquliwe etholakalayo kwezohwebo, izinto zokusetshenziswa ezisetshenziswe kulolu cwaningo ziyizindleko eziphansi futhi kulula ukuzithola ngezinga lokushisa elingaphansi kuka-130°C, kusetshenziswa inqubo elula yokuhlanganisa, futhi azikho izinyibilikisi eziphilayo.

Lokhu kubuyekezwa kushicilelwe ku-Journal of Coatings Technology and Research, Volume 21, ngoNovemba 2023.