Ama-nucleating agents asobala angahlukaniswa abe izinhlobo ezimbili: ama-organic compounds nama-inorganic compounds.
Ama-ejenti Awe-Inorganic Nucleatingikakhulukazi ama-oxide ensimbi, njenge-talc, i-silica, i-titanium dioxide, i-benzoic acid nokunye.Lolu hlobo lwe-nucleating agent ludinga usayizi wezinhlayiyana ezingaphansi kwama-40m futhi wuhlobo lokuqala lwe-nucleating agent esetshenziswayo.Ngenxa yokuthi azincibiliki ekuncibilikeni kwe-polymer, ngokwemvelo zakha imibungu eyikristalu ngesikhathi sokuncibilika kabusha.Kodwa-ke, ngenxa yombala wayo, akufanelekile ukuthuthukisa ukucaca nokucwebezela kwendawo yomkhiqizo oqediwe ngemva kokusebenzisa.Nakuba abakhiqizi abambalwa besasetshenziswa, kodwa kungumkhiqizo wezinga eliphansi, ukuthambekela kwesilinganiso sawo kuncipha unyaka nonyaka, futhi kuzoqedwa ekugcineni.
OkuyinhlokoAma-ejenti a-Organic Nucleatingkukhona okunamafutha e-carboxylic acid, insipho yensimbi enamakha, i-organophosphate kanye nokuphuma kokuphuma kwe-sorbitol benzylidene.I-Sorbitol ne-organophosphate ama-nucleating agents asetshenziswa kakhulu emakethe.
Zombili zinomphumela wokuguqulwa osobala ongcono, kodwa ngayinye inezinzuzo zayo kanye nokubi
I-Sorbitol Nucleating Agentingancibilika ekuncibilikeniPP, bese kwakheka uhlelo lwe-homogeneous, ngakho-ke umphumela we-nucleation muhle, kanye ne-fusion ngePPkuhle.Ukucaca kungcono kune-organophosphates.Ububi ukuthi ukunambitheka kwe-aldehyde yomzali kulula ukukhishwa ngesikhathi sokucubungula.
I-Organophosphate Nucleating Agentinezici zokumelana nokushisa okuhle, ayinaphunga.Kodwa umphumela wayo we-nucleating nokungafihli lutho kungaphansiI-Sorbitol Nucleating Agent, kodwa ngentengo ephezulu kanye nokuhlakazeka okubi phakathiPP.
I-nucleating mechanism yezinhlobo ezahlukene zama-nucleating agents okukhulunywe ngenhla iyahambisana.Kodwa-ke, ngenxa yokwehluka kwezinye izakhiwo zama-nucleating agents, kukhona futhi umehluko ekuthuthukiseni izakhiwo ze-nucleatingPPohlelweni lokucubungula.Isibonelo, i-sorbitol nucleating agent ayikwazi nje ukuthuthukisa kakhulu ukucaca kanye nokucwebezela kwendawo.PP, kodwa futhi uthuthukise ezinye izici ezingokomzimba nezokusebenza zePP: ngcono ukuqina, izinga lokushisa lokuguquguquka okushisayo kanye nokuzinza kwe-dimensionalPP.Ngakho-ke, i- dibenzylidene sorbitol ithandwa kakhuluI-Transparent Nucleating Agentemakethe.
Isikhathi sokuthumela: Nov-18-2020