Ukusabela okuyisisekelo kwamakhemikhali ngesikhathi sokumiswa kwe-solventless

Ngokuthuthuka okuqhubekayo kobuchwepheshe, i-solventless lamination yamukelwa iningi labakhiqizi bephakheji abaguquguqukayo.

Izinzuzo ze-lamination engenazincibilikisi zishesha, zilula, zinobungani nemvelo, futhi zingabizi kakhulu.

Kubaluleke kakhulu kithi ukwazi ukusabela kwamakhemikhali okuyisisekelo ngesikhathi sokufaka i-lamination ngaphandle kwe-solvent ukuze kukhiqizwe kangcono.

Ingxenye ezimbiliIngcina engenasinyibilikisiyenziwe nge-polyurethane (PU), i-PU yahlanganiswa yi-isocyanate(-NCO) ebizwa kakhulu ngokuthi ingxenye ye-A, kanye ne-polyol(-OH) ebizwa kakhulu ngokuthi ingxenye ye-B. Imininingwane yokusabela sicela ubheke ngezansi;

Ukusabela okuyinhloko kuphakathi kuka-A no-B, ama--NCO asabela ngamakhemikhali ne--OH, ngasikhathi sinye, ngenxa yokuthi amanzi nawo aneqembu elisebenzayo le--OH, amanzi azoba nokusabela kwamakhemikhali nengxenye engu-A ekhulula i-CO2.₂,I-carbon dioxide. Kanye ne-polyurea.

I-CO₂ Kungabangela inkinga yebhamuza kanti i-polyurea ingabangela isivalo sokuvimbela ukushisa. Ngaphandle kwalokho, uma umswakama uphakeme ngokwanele, amanzi azodla ingxenye enkulu ye-A. Umphumela uba ukuthi inhlaka ayikwazi ukuphola ngo-100% futhi amandla okubopha azokwehla.

Ngamafuphi, siphakamisa ukuthi;

Indawo yokugcina inhlaka kufanele igcinwe endaweni epholile, eyomile kude nomswakama

Indawo yokusebenzela kufanele igcine umswakama uphakathi kuka-30% ~ 70%, futhi isebenzise i-AC ukulawula inani lomswakama.

Ngenhla kukhona ukusabela kwamakhemikhali okuyisisekelo phakathi kwezinamathiseli ezimbili zezingxenye, kodwa i-mono-component glue izohluka ngokuphelele, sizokwethula ukusabela kwamakhemikhali kwe-mono component esikhathini esizayo.