IiPlastiki kwiiFowuli zoKugquma
Iiplasitiki zisetyenziselwa ukulawula inkqubo yokwenziwa kwefilimu yeengubo ezisekelwe kwizixhobo zokwenza ifilimu ezomileyo. Ukwakhiwa kwefilimu okufanelekileyo kubalulekile ukuze kuhlangatyezwane neemfuno kwiipropati ezithile zokugquma ezifana nembonakalo yefilimu eyomileyo, i-substrate adhesion, i-elasticity, ngokudibanisa nenqanaba eliphezulu lobunzima ngexesha elifanayo.
Iiplastiki zisebenza ngokunciphisa ukushisa kwefilimu kunye ne-elasticize yokugqoka; iiplasticizers zisebenza ngokuzifakela phakathi kwamatyathanga eepolymers, ziwahlukanise (ukwandisa "umthamo wamahhala"), kwaye ngaloo ndlela inciphisa kakhulu iqondo lokushisa lokutshintsha kweglasi kwipolymer kwaye iyenze ibe thambileyo.
Iimolekyuli ezikwizinto zokwenza ifilimu ye-polymeric, njenge-nitrocellulose (NC), ngokuqhelekileyo ibonisa ukuhamba kwekhonkco eliphantsi, elichazwe yintsebenziswano eqinile ye-molecular (echazwe yi-van der Waals forces) yamakhonkco e-polymer. Indima ye-plasticizer kukunciphisa okanye ukuthintela ngokupheleleyo ukubunjwa kwebhondi enjalo. Kwimeko yeepolima zokwenziwa oku kunokufezekiswa ngokubandakanya amacandelo elastiki okanye iimonomers ezithintela ngokungqongqo ukusebenzisana kwemolekyuli; le nkqubo yokuguqulwa kweekhemikhali yaziwa ngokuba "yiplastiki yangaphakathi". Yendaloral iimveliso okanye iipolymers ezinzima zokucutshungulwa kakubi, ukhetho lusetyenziso lwangaphandle lweplastiki kwi-coating formulation
Iiplastiki zisebenzisana ngokwasemzimbeni kunye ne-polymer binder molekyuli, ngaphandle kokusabela kweekhemikhali kwaye zenze inkqubo ye-homogeneous. Ukusebenzisana kusekelwe kwisakhiwo esithile seplastiki, ngokuqhelekileyo iqulethe i-polar kunye ne-non-polar moieties, kwaye iphumela ekunciphiseni ukushisa kweglasi (Tg). Ukuze kuqinisekiswe ukusebenza kakuhle, i-plasticizer kufuneka ikwazi ukungena kwi-resin kwiimeko zokwenza ifilimu.
Iiplastizer zeClassic zizinto ezinobunzima obuphantsi bemolekyuli, njenge-phthalate esters. Nangona kunjalo, kutsha nje iimveliso zasimahla zephthalate zikhethwa njengoko ukusetyenziswa kwe-phthalate esters kuthintelwe ngenxa yeenkxalabo zokhuseleko lwemveliso.