Liyini izinga lokushisa lokuguquka kwengilazi (Tg) lama-polymer powder aphinde ahlakazeke?

Izinga lokushisa lokushintsha kwengilazi (Tg) lama-polymer powder aphinde ahlakazeke lingahluka kuye ngokwakheka kwe-polymer ethile kanye nokwakheka kwayo. Ama-polymer powder aphinde ahlakazeke ngokuvamile akhiqizwa ngama-polymer ahlukahlukene, okuhlanganisa i-ethylene-vinyl acetate (EVA), i-vinyl acetate-ethylene (VAE), i-polyvinyl alcohol (PVA), ama-acrylic, nabanye. I-polymer ngayinye ine-Tg yayo ehlukile, okuyizinga lokushisa lapho i-polymer ishintsha khona isuka esimweni sengilazi noma esiqinile iye esimweni serabha noma esiqinile.

I-Tg yama-polymer powders aphinde ahlakazeke ithonywa yizici ezifana nalezi:

1. Ukwakheka kwe-Polymer: Ama-polymer ahlukene anamanani ahlukene e-Tg. Isibonelo, i-EVA ngokuvamile inobubanzi be-Tg obusukela ku--40°C kuya ku--20°C, kuyilapho i-VAE ingaba nobubanzi be-Tg obusukela ku--15°C kuya ku-5°C.
2. Izithasiselo: Ukufakwa kwezithasiselo, njenge-plasticizers noma ama-tackifiers, kungathinta i-Tg yezimpushana ze-polymer eziphinde zihlakazeke. Lezi zithasiselo zingase zehlise i-Tg futhi zithuthukise ukuguquguquka noma izakhiwo zokunamathela.
3. Usayizi Wezinhlayiyana Nokwakheka Kwazo: Usayizi wezinhlayiyana kanye nesimo sazo sama-powder e-polymer aphinde ahlakazeke kungathinta ne-Tg yazo. Izinhlayiya ezincane zingabonisa izakhiwo ezihlukene zokushisa uma kuqhathaniswa nezinhlayiya ezinkulu.
4. Inqubo Yokukhiqiza: Inqubo yokukhiqiza esetshenziselwa ukukhiqiza izimpushana ze-polymer eziphinde zihlakazeke, okuhlanganisa izindlela zokomisa nezinyathelo zangemva kokwelashwa, ingathinta i-Tg yomkhiqizo wokugcina.

Ngenxa yalezi zici, akukho inani elilodwa le-Tg lazo zonke izimpushana ze-polymer eziphinde zihlakazeke. Esikhundleni salokho, abakhiqizi bavame ukunikeza imininingwane kanye namaphepha edatha yobuchwepheshe afaka ulwazi mayelana nokwakheka kwe-polymer, ububanzi be-Tg, kanye nezinye izakhiwo ezifanele zemikhiqizo yabo. Abasebenzisi bezimpushana ze-polymer eziphinde zihlakazeke kufanele babheke la madokhumenti ukuthola amanani athile e-Tg kanye nolunye ulwazi olubalulekile oluhlobene nezinhlelo zabo zokusebenza.