Ukulungiswa kwe-viscosity ephantsi kunye nokuguquguquka okuphezulu kwe-epoxy acrylate kunye nokusetyenziswa kwayo kwiingubo ezinyangekayo ze-UV

Abaphandi bafumanisa ukuba ukuguqulwa kwe-epoxy acrylate (EA) kunye ne-carboxyl-termediate intermediate kwandisa ukuguquguquka kwefilimu kwaye kunciphisa i-viscosity ye-resin. Uphononongo lukwangqina ukuba izixhobo ezisetyenziswayo azibizi kakhulu kwaye zifumaneka lula.

I-Epoxy acrylate (EA) okwangoku yeyona oligomer isetyenziswa kakhulu kwi-UV ngenxa yexesha elifutshane lokunyanga, ubulukhuni bokugquma okuphezulu, ipropathi egqwesileyo yomatshini, kunye nokuzinza kwe-thermal. Ukujongana neengxaki ze-brittleness ephezulu, ukuguquguquka okungahambi kakuhle, kunye ne-viscosity ephezulu ye-EA, i-oligomer ye-UV enyangekayo ye-epoxy acrylate ene-viscosity ephantsi kunye nokuguquguquka okuphezulu yalungiswa kwaye yasetyenziswa kwiingubo ezinyangekayo ze-UV. I-carboxyl inqanyulwe i-intermediate efunyenwe ngokuphendula kwe-anhydride kunye ne-diol yayisetyenziselwa ukuguqula i-EA ukuphucula ukuguquguquka kwefilimu ephilileyo, kwaye ukuguquguquka kwahlengahlengiswa ngobude be-carbon chain of diols.

Ngenxa yeepropathi zazo ezibalaseleyo, iiresin ze-epoxy zisetyenziswa kakhulu kwishishini lokugquma ngaphezu kwalo naluphi na olunye udidi lwe-binder. Kwincwadi yabo entsha yereferensi "I-Epoxy Resins", ababhali uDornbusch, uKristu kunye noRasing bachaza iziseko zekhemistri yeqela le-epoxy kwaye basebenzise iifomyula ezithile zokuchaza ukusetyenziswa kwe-epoxy kunye ne-phenoxy resins kwiingubo zoshishino - kubandakanywa ukukhuselwa kwe-corrosion, ukugqoka phantsi, ukugubungela i-powder kunye ne-internal can coatings.

I-resin viscosity yancitshiswa ngokutshintsha ngokuyinxenye i-E51 kunye nebinary glycidyl ether. Xa kuthelekiswa ne-EA engaguqukiyo, i-viscosity ye-resin elungiselelwe kulolu cwaningo iyancipha ukusuka kwi-29800 ukuya kwi-13920 mPa s (25 ° C), kwaye ukuguquguquka kwefilimu ephilisiwe kwanda ukusuka kwi-12 ukuya kwi-1 mm. Xa kuthelekiswa ne-EA eguquliweyo ekhoyo ngokurhweba, izinto ezisetyenzisiweyo kolu phononongo zinexabiso eliphantsi kwaye kulula ukuzifumana ngeqondo lokushisa eliphantsi kwe-130 ° C, usebenzisa inkqubo yokudibanisa elula, kwaye akukho zinyibilikisi eziphilayo.

Le reserach ipapashwe kwiJenali yeTekhnoloji yeCoatings kunye noPhando, uMqulu wama-21, ngoNovemba ka-2023.