Ii-agent ze-nucleating eziqhelekileyo ezicacileyo zinokwahlulwa zibe ziindidi ezimbini: i-organic compounds kunye ne-inorganic compounds.
Ii-Ajenti zeNyukliya eziNgekhoyoubukhulu becala zii-oxides zesinyithi, njenge-talc, i-silica, i-titanium dioxide, i-benzoic acid njalo njalo.Olu hlobo lwe-agent ye-nucleating ludinga ubukhulu beqhekeza elingaphantsi kwe-40m kwaye luhlobo lokuqala lwe-nucleating agent esetyenziswayo.Ngenxa yokuba azinyibiliki kwi-polymer enyibilikayo, ngokwemvelo zenza iimbumba zekristale ngexesha lokunyibilika kwakhona.Nangona kunjalo, ngenxa yombala wayo, ayifanelekanga ukuphucula ukucaca kunye negloss yomhlaba wemveliso egqityiweyo emva kokusetyenziswa.Nangona abavelisi abambalwa besasetyenziswa, kodwa yimveliso yomgangatho ophantsi, intsingiselo yedosi yayo iyancipha unyaka nonyaka, kwaye iya kupheliswa ekugqibeleni.
EyonaIiarhente zeNyukliya zeNyukliyaNgamafutha e-carboxylic acid, isepha yentsimbi enevumba elimnandi, i-organophosphate kunye ne-sorbitol benzylidene derivatives.ISorbitol kunye ne-organophosphate zezona zixhobo zisetyenziswa kakhulu kwimarike.
Zombini zinesiphumo esingcono sokuguqulwa ekuhleni, kodwa nganye ineengenelo zayo kunye nokungalunganga
I-Sorbitol Nucleating Agentinokunyibilika kwindawo enyibilikisiweyoPP, emva koko yenze inkqubo ye-homogeneous, ngoko umphumo we-nucleation ulungile, kunye nokudibanisa kunyePPKulungile.Ukucaca kungcono kune-organophosphates.Ububi kukuba incasa ye-aldehyde yomzali kulula ukuyikhupha ngexesha lokucubungula.
I-Oganophosphate Nucleating Agentineempawu zokumelana nobushushu, ayinavumba.Kodwa isiphumo sayo se-nucleating kunye nokungafihlisi kungaphantsiI-Sorbitol Nucleating Agent, kodwa ngexabiso eliphezulu kunye nokusasazwa kakubi ngaphakathiPP.
I-nucleating mechanism yeentlobo ezahlukeneyo ze-nucleating agents ezikhankanywe ngasentla zihambelana.Nangona kunjalo, ngenxa yezinye iiyantlukwano kwiipropathi ze-nucleating agents, kukho ukungafani kokuphucula iimpawu zePPkwinkqubo yokucubungula.Ngokomzekelo, i-agent ye-sorbitol nucleating ayinakuphucula kakhulu kuphela ukucaca kunye neglosi yomphezulu.PP, kodwa nokuphucula ezinye iimpawu zomzimba kunye noomatshini bePP: ukuphucula ukuqina, ubushushu be-thermal deformation kunye nokuzinza kwe-dimensionalPP.Ke ngoko, i-dienzylidene sorbitol yeyona idumileyoIarhente yeNyukliya eNgaphandlekwimarike.
Ixesha lokuposa: Nov-18-2020